HomeMy WebLinkAbout20051670 Ver 1_Complete File_20050901• pF WHTF
p? RQG Michael F. Easley, Governor
/ y William G. Ross Jr., Secretary
> r North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of WatcrQuality
September 8, 2005
DWQ Project # 05-1670
Robert Wiseman, County Manager Avery County
Avery County
Post Office Box 640 M
Newland, NC 28657
D
Subject Property: Three Mile Creek EWP (DSR - 11, TMC 1 & 3) SEP 2 0 2005
DENR - WATER QUALITY
Approval of 401 Water Quality Certification with Additional Colffliti2SIL)STOP.?,,ATE BR;,ItH
Dear Mr. Wiseman:
You have our approval, in accordance with the attached conditions and those listed
below, to place fill within or otherwise impact 3,400 feet of streams for the purpose of
streambank stabilization and woody debris removal / trash removal at the subject
properties, as described within your application received by the N.C. Division of Water
Quality (DWQ) on August 31, 2005. After reviewing your application, we have decided
that the impacts are covered by General Water Quality Certification Number(s) 3367
(3367). The Certification (s) allows you to use Nationwide Permit(s) 37 when issued by
the US Army Corps of Engineers (USACE). In addition, you should obtain or otherwise
comply with any other required federal, state or local permits before you go ahead with
your project including (but not limited to) Erosion and Sediment Control, Non-discharge,
and stormwater regulations. Also, this approval to proceed with your proposed
impacts or to conduct impacts to waters as depicted in your application shall
expire upon expiration of the 404 or CAMA Permit.
This approval is for the purpose that you described in your application. (Nothing in this
approval should be interpreted as giving permission to remove bedload material
from the existing channel, nor allowing for the construction of berms which
would not allow the stream access to it's floodplain.) As "stable" and "pre-storm"
are not interchangeable terms, all work must be to ensure stability, regardless of
channel location. Additionally, channels cannot be returned to it's pre-storm location
unless there is documented instability is submitted and approved as part of the
application package. If you change your project beyond the approval here, you must
notify us and you may be required to send us a new application. If the property is sold,
the new owner must be given a copy of this Certification and approval letter and is
thereby responsible for complying with all conditions. If total fills for this project (now or
in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). This approval
requires you to follow the conditions listed in the attached certification and any
additional conditions listed below.
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: 919-733-1786 /FAX 919-733-6893 / Internet http://h 2o. e n r. state. n c. us/ncwetla nds
IZ0E _R
An Equal Cpportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Avery County:
Page 2 of 6
September 8, 2005
The Additional Conditions of the Certification are:
1. Impacts Approved
The following impacts are hereby approved as long as all of the other specific
and general conditions of this Certification (or Isolated Wetland Permit) are met.
No other impacts are approved including incidental impacts:
Amount
Approved (Units) Plan Location or Reference
Stream 3,400 feet Three Mile Creek
2. Erosion & Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all
specifications governing the proper design, installation and operation and
maintenance of such Best Management Practices in order to protect surface
waters standards:
a. The erosion and sediment control measures for the project must be
designed, installed, operated, and maintained in accordance with the most
recent version of the North Carolina Sediment and Erosion Control Planning
and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and
erosion control measures must be such that they equal, or exceed, the
requirements specified in the most recent version of the North Carolina
Sediment and Erosion Control Manual. The devices shall be maintained on
all construction sites, borrow sites, and waste pile (spoil) projects, including
contractor-owned or leased borrow pits associated with the project.
c. For borrow pit sites, the erosion and sediment control measures must be
designed, installed, operated, and maintained in accordance with the most
recent version of the North Carolina Surface Mining Manual.
d. The reclamation measures and implementation must comply with the
reclamation in accordance with the requirements of the Sedimentation
Pollution Control Act.
3. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian
areas beyond the footprint of the impacts depicted in the Pre-Construction
Notification. All construction activities, including the design, installation, operation,
and maintenance of sediment and erosion control Best Management Practices,
shall be performed so that no violations of state water quality standards, statutes,
or rules occur.
Avery County:
Page3 of6
September S, 2005
4. No Sediment & Erosion Control Measures w/n Wetlands or Waters
Sediment and erosion control measures shall not be placed in wetlands or waters
to the maximum extent practicable. If placement of sediment and erosion control
devices in wetlands and waters is unavoidable, they shall be removed and the
natural grade restored within six months of the date that the Division of Land
Resources has released the project.
5. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification
or applicable Buffer Rules, and any subsequent modifications, the applicant is
required to return the attached certificate of completion to the 401/Wetlands Unit,
North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC,
27699-1650.
6. Construction in this creek and disturbance within a 25-foot trout buffer, where
applicable, should be avoided during the October 15 to April 15 trout spawning
period to avoid adverse effects of sediment on eggs and larvae, where applicable.
However, Wildlife Resources Commission will not object to construction of Natural
Resources Conservation Service "urgent and compelling" sites during the spawning
period provided these projects are, to the extent appropriate and practical,
constructed by: (1) using flow diversion structures such as sand bags, (2) placing
large-sized rock toes and filter cloth backing for stabilization sites before backfilling,
and (3) excavating new channel alignments in dry areas. Construction at the other
non-"urgent and compelling" sites should not occur during the spawning period to
minimize the potential adverse effects of multiple construction activities on trout
resources in this creek.
7. Sediment and erosion control measures must be implemented prior to construction
and maintained on the sites to minimize sediment in downstream areas. Seeding for
a temporary cover of wheat, millet, or similar annual grain or permanent herbaceous
cover should occur on all bare soil within five (5) days of ground disturbing activities
to provide long-term erosion control. The projects should be accomplished in stages
instead of leaving large tracts exposed to further storm events. Erosion control
matting should be used in conjunction with appropriate seeding on disturbed soils in
steep slope and riparian areas. Matting should be secured in place with staples,
stakes, or, wherever possible, live stakes of native trees. Straw mulch and tall
fescue should not be used in riparian areas. In addition, because of an anticipated
difficulty in establishing ground cover during the winter, reseeding should be
conducted, as necessary, in the spring-time with a native annual and perennial seed
mix with a temporary nursery crop of wheat, millet or other grain.
Avery County:
Page4 of6
September S, 2005
8. Only clean, large, angular rock, large woody material, or other natural stream design
materials and techniques should be used for bank stabilization. Rock should not be
placed in the stream channel in a manner that constricts stream flow or that will
impede aquatic life movements during low flow conditions. Filter cloth should be
placed behind large rock that is used for bank stabilization. Properly designed rock
vanes should be constructed wherever appropriate on bank stabilization and
channel realignment stream reaches to improve channel stability and to improve
aquatic habitat. Root wads should be installed low enough in the bank so that a
significant portion (at least one-third) the root wad is inundated during normal flows.
9. The channel should be restored to a more stable condition. However, under no
circumstances should river rock, sand or other materials be dredged from the
stream channel under authorization of this permit except, if necessary, in the
immediate vicinity of the eroding banks for the explicit purpose of anchoring
stabilizing or flow/grade control structures or for reestablishing the natural
and more stable stream channel dimensions. Stream bed materials are unstable
in flowing-water situations and are unsuitable for bank stabilization. In stream
dredging has catastrophic effects on aquatic life and disturbance of the natural form
of the stream channel can cause downstream erosion problems. The natural
dimension, pattern, and profile of the stream upstream and downstream of the
permitted area should not be modified by widening the stream channel or changing
its depth.
10. Stabilization measures should only be applied on or near existing erosion sites,
leaving other stable stream bank areas in a natural condition. Grading and
backfilling should be minimized and tree and shrub growth should be retained where
possible to ensure long term availability of stream bank cover for aquatic life and
.wildlife. Backfill materials should be obtained from upland sites except in cases
where excess stream bed materials are available. Berms should not be permitted
because they block the floodplain, constrict and accelerate flood flows, and often fail
and sometimes impede drainage during large flood events.
11. Repairs to eroded banks should be conducted in a dry work area where possible.
Sandbags or other clean diversion structures should be used where possible to
minimize excavation in flowing water. Channel realignments should be constructed
by excavating the new channel from downstream to upstream before connecting it to
the old channel.
12. Heavy equipment should be operated from the bank whenever possible. All
mechanized equipment operated near surface waters should be inspected and
maintained regularly to prevent contamination of stream waters from fuels,
lubricants, hydraulic fluids or other toxic materials. Equipment used in stream
channel must be clean, new or low hour equipment.
13. Disturbed stream banks and a 25-foot vegetated zone, or the widest width that is
practical under the site conditions, should be restored along the construction sites to
natural riparian conditions with native trees and shrubs (e.g., silky dogwood,
rhododendron, dog hobble, red maple, silky willow, tag alder, black willow,
sycamore) to provide long-term bank stability and stream shading. Note, silky
dogwood, silky willow and black willow can be planted as live stakes collected during
the dormant growing season. Cuttings should be randomly planted on four (4) foot
centers from the waters edge to the top of the bank. Trees should be planted on ten
(10) to twelve (12) foot centers. Stream banks in these areas should also be
Avery County:
Page 5 of 6
September 8, 2005
seeded with a native annual and perennial seed mix with a temporary nursery crop
of wheat, millet or other grain.
14. If pasture along the stream is to be used for grazing, a fence must be constructed
outside of the riparian zone and the stream to prevent livestock from entering these
areas.
15. Diffuse Flow
All constructed stormwater conveyance outlets shall be directed and maintained
as diffuse flow at non-erosive velocities through the protected riparian zones
such that it will not re-concentrate before discharging into a stream. If this is not
possible, it may be necessary to provide stormwater facilities that are considered
to remove nitrogen. This may require additional approval from this Office.
16. Riparian Zone Replanting
Replanting of vegetation within disturbed areas located within 30 feet of the
streambank associated with any land disturbing activity, repair, replacement
and/or maintenance must be done in a manner consistant with the Guidelines
for Riparian Buffer Restoration immediately following construction. (Please
see attached.)
17. Deed Notifications
Deed notifications or similar mechanisms shall be placed on all retained
jurisdictional wetlands, waters and protective woody riparian zones in order to
assure compliance for future wetland, water and buffer impact. These
mechanisms shall be put in place prior to impacting any wetlands, waters and/or
buffers approved for impact under this Certification Approval and Authorization
Certificate. A sample deed notification can be downloaded from the
401/Wetlands Unit web site at http://h2o.enr.state.nc.us/ncwetlands. The text of
the sample deed notification may be modified as appropriate to suit to this
project.
18. Turbidity Standard
The turbidity standard of 10 NTUs (Nephelometric Turbidity Units) shall not be
exceeded as described in 15 A NCAC 2B. .0200. Appropriate sediment and
erosion control practices must be used to meet this standard.
19. No Sediment and Erosion Control Measures in Wetlands
Sediment and erosion control measures shall not be placed in wetlands or waters
to the maximum extent practicable. If placement of sediment and erosion control
devices in wetlands and waters is unavoidable, they shall be removed and the
natural grade restored within six months of the date that the Division of Land
Resources or locally delegated program has released the project.
Avery County:
Page 6 of 6
September 8, 2005
Violations of any condition herein set forth may result in revocation of this Certification
and may result in criminal and/or civil penalties. The authorization to proceed with your
proposed impacts or to conduct impacts to waters as depicted in your application and
as authorized by this Certification, shall expire upon expiration of the 404 or CAMA
Permit.
If you do not accept any of the conditions of this Certification (associated with the
approved wetland or stream impacts), you may ask for an adjudicatory hearing. You
must act within 60 days of the date that you receive this letter. To ask for a hearing,
send a written petition, which conforms to Chapter 150B of the North Carolina General
Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh,
N.C. 27699-6714. This certification and its conditions are final and binding unless you
ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of
the Clean Water Act. If you have any questions, please telephone Cyndi Karoly in the
Central Office in Raleigh at 919-733-9721 or Mr. Kevin Barnett in the DWQ Asheville
Regional Office at 828-296-4657.
Sincerely,
Alan W. Klimek, P.E., Director
Division of Water Quality
AW Klkhb
Enclosures: GC 3367
Certificate of Completion
Guidelines for Riparian Buffer Restoration
cc: Steve Glickauf,
Buck Engineering, PC
8000 Regency Parkway
Suite 200
Cary, NC 27511
USACE Asheville Regulatory Field Office
DWQ 401 Central Office
DLR Asheville Regional Office
File Copy
Central Files
Filename: 05-1670. EWP.ThreeMileCreek.Approval
Triage Check List
Date: 09/02/05
To:
Kevin Barnett, Asheville Regional Office
60-day Processing Time: 9/01/05 to 10/30/05
County: Avery
From: Cyndi Karoly Telephone: (919) 733-9721
The file attached is being forwarded to you for your evaluation.
Please call if you need assistance.
? Stream length impacted
? Stream determination
Wetland determination and distance to blue-line surface waters on USFW topo maps
? Minimization/avoidance issues
? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
Is the application consistent with pre-application meetings?
? Cumulative impact concern
Comments: As per our discussion regarding revision of the triage and delegation processes,
please review the attached file. Note that you are the first reviewer, so this file will need to be
reviewed for administrative as well as technical details. If you elect to place this project on hold,
please ask the applicant to provide your requested information to both the Central Office in
Raleigh as well as the Asheville Regional Office. As we discussed, this is an experimental, interim
procedure as we slowly transition to electronic applications. Please apprise me of any
complications you encounter, whether related to workload, processing times, or lack of a "second
reviewer" as the triage process in Central had previously provided. Also, if you think of ways to
improve this process, especially so that we can plan for the electronic applications, let me know.
Thanks!
Project Name: Avery County EWP
DSR 11, TMC 1 & 3
DWQ #:05-1670
EWP - Avery County, North Carolina
DSR 11- TMC-1 & TMC-3
French Broad River Basin
20051670
Scope of Work
These sites are part of DSR group 11 located in southwest Avery County. This submittal
contains the remaining 2 sites for this group. Nine sites have been previously submitted.
TMC-1 and TMC-3 will require a Preconstruction Notification (permit) to the United
States Army Corps of Engineers. Site specific plans are attached and show site location,
existing conditions, estimated repair quantities and planned repairs. All repair work is
being proposed under the Emergency Watershed Protection Program that Avery County
is administering. Questions about this package should be directed to Buck Engineering's
Doug Smith, at 919-463-5488.
Contents
• Preconstruction Notification (Permit Application)
• Avery County EWP Index Map of DSR Groups
• Table 1. Property owners of sites proposed for repair under EWP.
• Repair plan and cost estimate for site TMC-1
• Repair plan and cost estimate for site TMC-3
• Avery County Plant List and Riparian Seed Mix
• Construction Details
• Erosion and Sediment Control Plan
pk?9goeq
SEP 1 2005
DENR - YJATER QUALITY
WETLANDS AND STORKNATER BRA14CH
Office Use Only: Form Version May 2002
20
USACE Action ID No. DWQ No. 0 5 1 7 0
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 37
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 Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of C' tTV ?? of
Environmental Concern (see the top of page 2 for further details) I*e U
II. Applicant Information SEP 1 2005
. QUALITY
1. Owner/Applicant Information DENR WATERWATER
WETLANDS AND STOFi1JNVATER BRAtiCH
Name: Robert Wiseman (County Manager)
Mailing Address: County Administrative Offices
P.O. Box 640
Newland, NC 28657
Telephone Number: 828-733-8201 Fax Number: 828-737-9395
E-mail Address: Robert.wisemannncmail.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: Doug Smith
Company Affiliation: Buck Eupineering PC
Mailing Address: 8000 Regency Parkway, Suite 200
Cary, NC 27511
Telephone Number: 919-463-5488 Fax Number: 919-463-5490
E-mail Address: (ism ithnbuckengineering.com
Page 1 of 9
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: Avery County EWP, Group 11.
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): See attached Table 1.
4. Location
County: Avery Nearest Town: Newland, NC
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): The location of each site is
attached on the EWP Index Map and provided in each individual site repair plan.
5. Site coordinates, if available (UTM or Lat/Long): Attached in site repair plan.
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): N/A
7. Nearest body of water (stream/river/sound/ocean/lake): Three Mile Creek.
8. River Basin: French Broad River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: A site specific description is in each site plan.
10. Describe the overall project in detail, including the type of equipment to be used: Specific
repair activities for the site are provided in the site repair plans which are attached. Repair
activities proposed for the site include: installing vane structures to protect unstable stream
Page 2 of 9
banks, and removing unstable woody debris. This work will require the use of a trackhoe
with hydraulic thumb and a dump truck to haul and place boulders and remove woody debris.
A bulldozer may be needed for some of the grading work. A logging winch will help debris
removal easier
11. Explain the purpose of the proposed work: This work is being done as part of the
Emergency Watershed Protection program that counties impacted by 2 Hurricanes in the Fall
of 2004 are carrying out. The purpose of the work is to repair damaged stream reaches that
are unstable and continuing to cause loses to personal and public property and to public
resources by degrading water quality and other natural resources.
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.
To our knowledge permits have not been issued for work at these sites in the past.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
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.
Page 3 of 9
Provide a written description of the proposed impacts: Impacts from this work will be
minimized whenever possible. However to accomplish these needed repairs impacts may be
realized from temporary increased turbidity, removal of aggraded bed material and temporary
loss of herbaceous vegetation. Long-term impacts will be an increase in stream bank
stability, stable dimension and profile, and improved vegetative cover.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
( es/no) Distance to
Nearest Stream
feet
Type of Wetland***
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.feina.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0
Total area of wetland impact proposed: 0
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma
Type of Impact*
(linear Length r feet) Impact
Stream Name** Average Width of
Stream Before
Impact Perennial or
Intermittent?
(please secif
Channel grading,
TMC-1 installing boulder 1150' Three Mile Creek 20'-30' Perennial
structures.
Channel grading,
TMC-3 installing ford
stream crossing and 2250' Three Mile Creek 25'-35' Perennial
boulder structures
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapqucst.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 3400'
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Page 4 of 9
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.
N/A
* List each impact- separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
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.):
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
Access to each site will be over the most stable route possible and movement of vehicles over
access routes will be minimized. Wherever possible equipment work will be done from the
stream bank. Operating equipment within the channel will be done when this is the only wad
accomplish needed work. Excavated material will be moved directly to trucks for hauling to
disposal sites when it will not be used on site. When excavated material will be used on site it
will be handled as few times as possible. Work at each site will be accomplished as quickly as
possible and the site will be stabilized with erosion control matting and seeding within 5 days of
site completion. Trees will be planted during the next dormant season. Equipment leaking any
fluids will not be used and if leaks occur during construction the equipment will be replaced or
repaired immediately. Sediment and erosion control measures, including silt fence, stoned
entrances, protected stock pile areas, diversions and check dams, will be employed to minimize
sediment movement off site.
VIII. Mitigation
Page 5 of 9
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.litm1.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
(919) 733-5208 to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Page 6 of 9
Amount of Coastal wetland mitigation requested (acres): N/A
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-5083 to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and snap all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 3
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 7 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss Stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
There will be no change in impervious acreage. Existing project sites are agricultural lands and
will remain in this land use. Proposed repair work will not alter runoff of stormwater from each
site. The end result of this proposed work will be stream banks that are better able to withstand
the erosive forces generated by storm flows.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
N/A, waste water will not be generated by this project
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No N
Is this an after-the-fact permit application?
Yes ? No N
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).
Page 8 of 9
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
I ?/
Plan Review Checklist
EWP-Avery County, North Carolina
DSR
i Mc
I the Natural Resource Conservation Service Agent foi Avery
County, have reviewed the stream repair plans listed below. These plans have been
prepared by Buck Engineering PC to accomplish stream repair under the Emergency
Watershed Protection Program being administered by Avery County. The following table
summarizes my comments on these plans:
DSR Approve Disapprove Approve with Modifications
C /
C
Additional comments:
SGT . Natural Resource Conservation Service Agent
Agent's signam e
To Whom It May Concern:
I, Robert Wiseman, County Manager for Avery County, attest to the fact that Avery County has
entered into a contract with Buck Engineering PC, a North Carolina professional corporation. Buck
Engineering will be providing engineering services and permitting assistance in support of the
Emergency Watershed Protection Program. In this contractual relationship, Buck Engineering will
act as the County's agent for the purpose of accomplishing this work. Specifically, employees of
Buck Engineering may take those actions necessary to obtain environmental permits from the U. S.
Army Corps of Engineers, N. C. Division of Water Quality, and N. C. Division of Land Quality.
i
Robert Wiseman, ca?County Manager for Avery County
Date: (/ U -
Office: Avery County Courthouse, Newland, NC 28657
Table 1. Property owners of s tes proposed for repair under the EWP program In Avery County County. DSR site relatas to the number shown on the Index Map.
1 at R I nnn rrld r11Ar11
DSR NUMBER DSR SITE PIN NAME 1 ADDRESS 2 CITY/STATE ZIPCODE Norh we Type Lencth
11 TMC-1 182200165313 CALLOWAY, C W & LOUISE 1350 THREE MILE HWY NEWLAND, NC 26657 35.98283 81.9712 Channel grading, landscaoina, and intall 3 structures. 750 ft
11 TMC-1 181200967451 FISHER. PHILLIP S 160 HIGHTOP LANE NEWLAND, NC 28657 35.98458 81.97538 Channel relocation, landscacin , and install 6 structures. 450 ft
11 TMC-3 182300118042 3 MILE FARMS, LLC 1517 OLD CREWS RD KNIGHTDALE, NO 27545 35.98965 81.96786 Channel relocation, cradln landscaoina, install stricture and culvert. 650 ft
11 TMCJ 182300118042 3 MILE FARMS LLC 1517 OLD CREWS RD KNIGHTDALE, NC 27545 35.9x643 81.96367 Channel relocation, cradln and landscaoin 750 ft
11 TMG-3 182200083490 AVERY COUNTY PRISON CAMP 245 PRISON CAMP RD NEWLAND, NC 25657 35.98693 81.97241 Gradlna, landscaclna and install2 structures. 1250 ft
11 TMGJ 1812009686C9 MC FEE, ROY & MENTHA ANN 864 PRISON CAMP RD NEWLAND, NC 28557 35.98528 81.97455 Channel realignment, cradinc landscaoina, and instal four structures 700 ft
r
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LEGEND
0 DSR Group 11
Avery County EWP
Index Map of DSR Group 11
Field Crew:
Time/Date:
O DSR sites included in this submittal: TMC-1 & TMC-3
NN 0 1 2 4
^? Miles
t.. ' or
soy5 '• r t ' a,
^.- / -
01,
Jag"
B??? Avery County LEGEND (Group 11) SIte:TMC-1
t Avery County EWP
P-b
Field Crew: rnpo (S t:mmun) 0 100 200 400
Slrcame ,j„ Feel
TlmeNetr •Date dexAl photography: 799e
t }
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Vicinity Map
182 uoi 43!
4 µ
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Mil
)MMENDA TIONS FOR REPAIR
?
(Group 11) S ite: TMC-1 (Reach 2) 40
Avery Coun ty EWP
o so ?o0 200
Feet
DSR No. TMC-1
Site Assessed By: KSM, CLY
Date Assessed: 6/16/2005
Length of Approximately 2500 feet
Assessment:
Location: Adjacent to Three Mile Highway (HWY
194)
County: Avery
Lat.: 35° 59' 03" / Long.: 81 ° 58' 30"
Waterbody:
X Debris removal Channel realignment
X Bank sloping X In-stream structures
X Bank stabilization X Riparian planting
Three Mile Creek (0.98 mil)
X Seeding
X Adjust channel dimension
Summary Evaluation of Conditions:
This site has been divided into two distinct reaches. Reach 1 begins immediately downstream from Garmon Ln. and
extends approximately 1200' downstream where it ends in the vicinity of an old barn. This reach has experienced
moderate-severe bank erosion and debris deposition throughout.. Approximately 250' downstream from Garmon Lane
a small dam was breached and much of impoundment has been eroded. Moving downstream approximately 200',
deposition has accumulated in the channel, and a headcut is propagating upstream through the channel bed.
Aproximately 250' downstream from this point more deposition has occurred followed by another headcut. Reach 2
begins approximately 500' upstream from the High Top Rd culvert and ends at this culvert. This reach experienced
severe bank erosion and it is threatening to undercut a driveway to the Fisher residence.
Recommendations for Repair:
Prior to performing any clearing, grubbing or debris removal activities, inventory, under engineer approval, any
adequate root wad or transplant material. These items should be stockpiled; then installed or transported at the
appropriate time.
In reach 1, armor left channel bank with Class 1 rip rap and grade right bank to stable 2:1 slope in the vicinity of
breached dam. Remove debris from existing channel. Compact, seed, mat, and live stake. Make profile adjustments
in the vicinity of stream deposition as per "Reach 1 Profile Design." Install a double drop cross vane at Sta -14+42.
For Reach 2, armor channel bank with Class 1 rip rap and grade right bank to stable 2:1 slope. Seed, mat, and
livestake. Install bare root and container plantings along stream corridor. Install one rock vane and one cross vane.
All work should be performed in conformance with the "Erosion & Sediment Control Plan" (see attach
Quantities:
Item Unit Quantity
Grading bank preparation) CY 150
Live Stakes EA 1050
Erosion Control Matting SY 975
Temporary Seeding LB 40
Grain Straw Mulch EA bales 25
Silt Fence LF 1000
Permanent Seeding LB 5
Rip Rap, Class 1 Tons 154
Rip Rap, Class A Tons 41
Filter Fabric SY 66
Boulders 2x3x4 in size Tons 151
Reach I Profile Design
1010
1005
1000
995
c
0
990
Q
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985
980
975
97C
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1000 1100 1200 1300 1400 1500 1600 1700 1800
Station
1900
07, U?fxl
?f
E N G I N E E R I N G
CLIENT PROJECT TAi C- `
SUBJECT (fros5 S« k'• 'y
PAGE
PROJECT NO.
Prepared By
Approved By
Date
Date
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BOTTOM BOTTOM BOTTOM
WIDTH OF WIDTH OF WIDTH OF
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BACKWATER
POOL
I
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NO GAPS I
?G 1
FLOW----,- .TO 8% SLOPE
STREAM BED ;
ELEVATION a -
BACKFILL (ON-SITE ALLUVIUM!)
#57 STONE FILTER FABRIC
CLASS A STONE
CLASS 1 STONE PROFILE VIEW
w
6
y # 57 STONE
J
J
BACKFILL (ON-SITE ALLUVIUM) 1
STREAMBED
CLASS A STONE
FILTER FABRIC-
HEADER ROCK
FOOTER ROCK
CLASS 1 STONE
1 ?1-2
117 MINIMUM
SECTION A - A
BETWEEN BOULDERS FLOODPLAIN SILL
?- NOTES FOR ALL VANE STRUCTURES:
POOLS (EXCAVATED) PER 1. BOULDERS MUST BE AT LEAST V x Tx Z.
DIRECTION OF ENGINEER 2. INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MUDDLE OF THE HEADER
DEPTH AVERAGE BANKFULL DEPTH x 1.5 TO 2.0 ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK
AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREAM BANK
PLAN VIEW 4. STARTAT BANKFULLAND PLACE FOOTER ROCKS FIRSTAND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
8. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT.
?+ C 7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS A STONE TO FILL GAPS ON UPSTR SIDE OF CLASS 1 STONE.
TI e. FI44 Q p km 7 :11 -4,:, -?/it
?4.? I r t J? .5• L~' 1? ?,? 8. AFT H ONSfTEOALNE HAS LUVIU MTONTHE ELEVATIOOF TH1E TOPOTHSIDE OF THE E HEADER ROCICCTURE
8000 R® Parkway SWt. 200
Cary, North Carolina 275 27511
Phone: 919-463-5488
Fax: 919-4835490
DOUBLE DROP ROCK CROSS VANE
(T-mc I
V 1
ENGINEERING
CLIENT
SUBJECT
_ PROJECT
616 ^, 1h.- I PAGE OF
PROJECT NO.
- Prepared By Date
Approved By Date
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ROCK CROSS VANE TYPE 1
TYPE 1 CROSS VANE FOR GRAVEL/COBBLE BED RIVERS
WITH DRAINAGE AREAS GREATER THAN 12m?
FLOW ---s
TOE OF BANK
SECTION A - A
BANKFULLSTAGE HEADER ROCK
STREAM BANK
FLOW ? 4Y TO 77 VANE ARA' SLOPE B
STREAM BED
ELEVATION
FOOTER ROCK
PROFILE VIEW B - B
VANE ARM
PLAN VIEW VANE ARM LENGTH A FT
INVERT WIDTH q FT
VANE ARM SLOPE _l %
VANE ANGLE -J.0o
NOTES FOR ALL VANE STRUCTURES:
1. BOULDERS MUST BE AT LEAST W X V X T.
Z INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE HEADER
ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK, AND
THEN UPSTREAM TO A MINIMUM OF SIX FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. CONSTRUCT FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
5. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS A
STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
6. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE STRUCTURE
MATH ON-SITE ALLUVIUM TO THE ELEVATION OF ONE HALF THE HEADER ROCK
A 8000 Regency Parkway Suite 200
+.k Cary, North Carolina 27511
Phone: 9194535488
Fa)c 919463-5490
FILTER FABIC
PROFILE VIEW C - C
ROCK CROSS VANE TYPE 1
CROSS VANE INVERTIGRADE POINT
ROCK VANE
w
N
z
a
15
BOTTOM
WIDTH
OF
CHANNEL ,
r?O-`?` FLOW
gg' o
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NO GAPS
BETWEEN
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BOTTOM W
PLAN VIEW
TOP OF STREAMBANK-?,_
FLOW -?
STREAMBED
ELEVATION
i
BACKFILL (ON-SITE ALLUVIUM) ? .
CLASS A STONE
CLASS 1 STONE-/
SCOUR POOL (EXCAVATED) PER
DIRECTION OF ENGINEER
BACKFILL (ON-SITE
NOTES FOR ALL VANE STRUCTURES:
1. BOULDERS MUST BE AT LEAST 4'x 3'x7.
2. INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE
HEADER ROCKS AND EXTEND DOVMWARD TO THE DEPTH OF THE BOTTOM
FOOTER ROCK, AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON
UPSTREAM SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. START AT BANK AND PLACE FOOTER ROCKS FIRST AND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
8. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT.
7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS
A STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE.
8. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE
STRUCTURE WITH ONSITEALLUVIUM TO THE ELEVATION OF THE TOP OF
THE HEADER ROCK
9. START SLOPE AT 2/3 T01 TIMES THE BANKFULL STAGE
8000 Regency Parkway Suite 200
Cary, North Carolina 27511
4 Phone: 919-403-5488
Fax: 919-483-5480
CLASS A STONE
Z('
8 /6
PROFILE VIEW
FILTER FABRIC
1-7
L10' MINIMUM-
SECTION A-A
HEADER ROCK
\-- FOOTER ROCK
SCOURPOOL
(EXCAVATED)
HEADER ROCK
FOOTER ROCK
CLASS 1 STONE
ROCK VANE (PLAC 1)
ILNGINEERING
PAGE OF
CLIENT PROJECT PROJECT NO.
SUBJECT Prepared By Date
Approved By Date
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ENGINEERING
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PROJECT TALC t, ` ( Rc-,A 1)
PAGE OF
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SUBJECT S?n,._4,.-i+ Prepared By Date
Approved By Date
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Approved By Date
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-1011 ""Ill
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,A k-
very County >- LEGEND (Group 11) SIte:TMC-3
BUCK Avery County EWP
' ? ???#• O U9R Snc 1----- ? Porccb -
Field Cr.- v`./? 1 T,p,(5'fmmw) 0 150 300 900
Seam. -• Feet
Time/Date: • Dab d axNl photography: 1998
DSR No. TMC-3 Location: Adjacent to Prison Camp Road.
Site Assessed By: KSM, JBG County: Avery
Date Assessed: 5/25/2005
Lat.: 35° 59' 32" / Long.: 81 ° 58' 06"
Length of Approximately 4300 feet Three Mile Creek (1.63 mil)
Assessment: Waterbody:
_ Debris removal Channel realignment X Seeding
X Bank sloping X In-stream structures X Adjust channel dimension
X Bank stabilization X Riparian planting
Summary Evaluation of Conditions:
This site begins upstream with an unnamed tributary (UT) of Three Mile Creek. The damaged reach begins
approximately 700' upstream of Prison Camp Road on the UT. The UT experienced severe bank erosion, and just
upstream of the Prison Camp Rd. culvert major deposition occurred. The UT continues dowstream and joins Three
Mile Creek about 200' downstream from the culvert. This section has severely eroded banks, which destroyed a
culvert on the 3 Mile Farms, LLC property. This culvert provided access to the south side of the property. Just
downstream from the old culvert, major deposition has settled in the stream near a horse arena on the 3 Mile Farms
property. Continuing downstream through the Youth Camp and Three Mile Highway (2700'), several areas have
moderate to severe bank erosion and widening of the channel.
Recommendations for Repair:
Prior to performing any clearing, grubbing or debris removal activities, inventory, under engineer approval, any
adequate root wad or transplant material. These items should be stockpiled; then installed or transported at the
appropriate time.
This site is divided into four reaches (See Recommendations for Repair Figures). Reach 1 is located at the most
upstream extent, just upstream of Prison Camp Road. Repairs to this reach will involve cross sectional adjustments
(See Cross Section Design X1). Once grading is complete, seed and live stake stream banks.
Reach 2 begins approximately 200' downstream from Prison Camp Road. Repairs to this reach will involve cross
sectional adjustments and landscaping. The cross section data (X2) shows adjustment to the cross section channel
geometry. Once grading is complete, seed and live stake stream banks. Install ford stream crossing at location of
damaged culvert.
Reach 3 is located adjacent to the vacant youth camp. Repairs to this reach will involve stream bank grading, boulder
structure installation, seeding, live staking and bare root planting. See "Recommendations for Repair" figure for
location of repairs.
Reach 4 is the most downstream extent of this site, just upstream from Three Mile Highway (NC HWY 194). Repairs
to this reach will involve cross sectional adjustment and boulder structure installation. The cross section data (X3)
shows adjustment to the cross section channel geometry. Once grading is complete, seed and live stake stream
banks. See the "Recommendations for Repairs" figure for placement of the boulder structures.
All work should be performed in conformance with the "Erosion & Sediment Control Plan" (see attach
Quantities:
Item Unit Quantity
Grading bank preparation) CY 550
Live Stakes EA 600
Erosion Control Matting SY 3800
Temporary Seeding LB 168
Grain Straw Mulch EA bales 100
Silt Fence LF 1500
Permanent Seeding LB 13
Rip Rap, Class 1 Tons 73
Rip Rap, Class A Tons 40
Filter Fabric SY 63
Boulders 2x3x4 in size Tons 115
ENGINEERING
CLIENT
PROJECT 7 M G -3
PAGE OF
PROJECT NO.
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SUBJECT 6#-e,-,S Oe- s ) , -, 0(3) Prepared By Date
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- R - F?4 ? i I
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scale: 4 sq./inch
X1 Cross-section Data:
,Feature . Stream
T `e ..
BKF Area
: BKF Width BKF
Depth 'Max BKF
De th
W/D
BH Ratio
ER
BKF Elev.
TOB Elev
16.5 20.34 0.81 1.32 25.15 2.2 1.7 1004.18 1005.74
1006.5
1006
1005.5
0 1005
1004.5
0 1004
M 1003.5
1003
1002.5
1002
Cross Section X1
- • o - - Bankfull
0 - - Floodprone
Proposed Riffle XS
-- 1 Existing XS
Proposed Pool XS
100 110 120 130 140
Station
150 160 170
Pt North East' " Elevation Note, Station ;,
103 5357.597 4989.569 1005.493009 X1-RIFFLE 100
104 5360.674 4960.047 1006.115908 X1 LTB 129.6774
105 5360.936 4958.729 1003.67395 X7 131.0122
106 5360.978 4957.212 1003.244218 X1 LCH W 132.5282
107 5361.487 4955.031 1003.075752 X1 134.7438
108 5361.28 4953.235 1002.863972 X1 TWG 136.5163
109 5361.432 4948.746 1003.140239 X1 141.001
110 5361.887 4945.284 1003.42823 X1 RCH 144.4896
111 5361.293 4938.589 1004.184014 X1 151.1089
112 5362.401 4929.104 1004.017305 X1 160.6541
113 5362.968 4925.664 1004.05512 X1 164.1303
114 5363.448 4924.256 1005.738914 X1 RTB 165.5745
115 5363.807 4917.418 1005.559513 X7 172.4182
Bankfull Line
Station' - ' Elevation`
130.74 1004.18
151.07 1004.18
Prnnnsed Riffin YA
Flood prone Line . -
Station" Elevation
130.02 1005.5
165.37 1005.5
Prnnnsnri PnM YS2
LFP 120.75 1006
LFP 124.75 1005
LTB 139.75 1005
LCH 145 1003.5
TWG 148 1003.25
LCH 151 1003.5
RTB 156.25 1005
RFP 171.25 1005
RFP 173.25 1005.5
Riffle Cross Section Parameters
Bankfull Area (ft2) 16.5
Max Depth (Bkf) (ft) 1.75
Mean Depth (bkf) (ft) 1.1
Bankfull Width (ft) 15
Width/Depth Ratio 13.6
Slope 4-5 (Bank Slope 3
Slope 5-6 (Channel sic 12
Slope 6-7 (Channel sic 12
Slope 7-8 (Bank Slope 3
----------? .......
LFP
LFP
LTB 139 1005
LCH 145 1003
TWG 148 1002.5
LCH 151 1003
RTB 155 1005
RFP
RFP
Pool Cross Section Parameters
Bankfull Area (ft2) 23.5
Max Depth (Bkf) (ft) 2.50
Mean Depth (bkf) (ft) 1.47
Bankfull Width (ft) 16.0
Width/Depth Ratio 10.9
Slope 4-5 (Bank Slope) 3.0
Slope 5-6 (Channel slope) 6.0
Slope 6-7 (Channel slope) 6.0
Slope 7-8 (Bank Slope) 2.0
X2 Cross-section Data:
Feature stream'
BKF Area
' BKF Width' BKF
De th Max BKF,
Depth
W/D
:BH Ratio
.; ER,
-' BKF Elev
TO - Elev
26.8 19.57 1.37 1.94 14.31 1.6 1.6 980.5 981.71
Cross Section X2
984
983
c 982
0
R 981
chi 980
w 979
978
977
o - • Bankfull
0 - - Floodprone
Proposed Riffle XS
Existing XS
Proposed Pool XS
95 105 115 125 135
Station
145 155
Pt# ' ':.North'.' ':7East ' ,' Elevation ` Note = Station
221 4396.508 4645.093 983.019874 X2-RIFFLE 100
222 4398.958 4630.801 981.705901 X2 LTB 114.4819
223 4399.099 4628.799 980.058694 X2 116.4862
224 4399.506 4627.434 979.230923 X2 117.8899
225 4400.106 4625.629 979.006149 X2 LCH W 119.7535
226 4399.811 4624.411 978.85034 X2 120.9283
227 4399.742 4622.435 978.939865 X2 122.8814
228 4398.742 4618.624 978.55738 X2 TWG 126.5464
229 4398.072 4615.618 979.114937 X2 RCH 129.4517
230 4397.757 4610.324 979.49881 X2 134.6709
231 4398.786 4607.681 982.724701 X2 RTB 137.4172
232 4403.505 4586.679 982.969522 X2 158.8314
Bankfull Line.
Station Elevation
115.95 980.5
135.52 980.5
Prnnnsed Riffln XA
Flood rone Line.
.: ;'
Station- Elevation=
106.36 982.44
137.18 982.44
LFP 99 982.85
LFP 107 980.85
LTB 117 980.85
LCH 123 978.85
TWG 126 978.6
LCH 129 978.85
RTB 135 980.85
RFP 150 980.85
RFP 158 982.85
Prnnnsed Pnnl XS
LFP
LFP
LTB 116 980.85
LCH 123 978.1
TWG 126 977.85
LCH 129 978.1
RTB 133 980.85
RFP
RFP
name rarammers Pool Parameters
Bankfull Area (ft2) 24.75 Bankfull Area (ft2) 32.38
Max Depth (Bkf) (ft) 2.25 Max Depth (Bko (ft) 3
Mean Depth (bko (ft) 1.375 Mean Depth (bkf (ft) 1.90
Bankfull Width (ft) 18 Bankfull Width (ft) 17
Slope 4-5 (Mid-channel Slope 3.0 Width/Depth Ratio 8.93
Slope 5-6 (Channel slope) 12.0 Slope 4-5 (Mid-channel Slope) 2.55
Slope 6-7 (Channel slope) 12.0 Slope 5-6 (Channel slope) 12
Slope 7-8 (Bank Slope) 3.0 Slope 6-7 (Channel slope) 12
Slope 7-8 (Bank Slope) 1.45
X3 Cross-section Data:
Feature ` Stream
T p e ..
BKF Area
= BKF Width ' ... BKF .
De th Max BKF:
Depth.
W/D
BH Ratio
ER .
"BKF Elev
TOB Elev
31.6 25.16 1.25 1.63 20.05 2 1.1 991.07 992.69
Cross Section X3
996
995
r 994
993
w
992
991
w 990
989
988
. • •0 . - Bankfull
. • -0 - - Floodprone
Proposed Riffle XS
* Existing XS
Proposed Pool XS
95
105 115 125
135 145 155 165
Station
Pt #..: North 1Z.-East, - Elevation' Note' Station
76 4859.983 4972.203 993.246137 X1 RIFFLE 100
77 4884.991 4957.348 992.691748 X1 LTB 128.7886
78 4886.836 4955.896 990.013613 X1 131.1365
79 4888.138 4954.3 990.04783 X1 LCH W 133.1516
80 4890.875 4952.124 989.440386 X1 TWG 136.648
81 4899.605 4943.478 989.764543 X1 RCH 148.8718
82 4904.354 4939.481 990.316752 X1 155.078
83 4905.411 4939.006 993.179692 X1 RTB 156.1987
84 4920.077 4923.671 995.332843 X1 177.2432
Bankfull Line
Station * `- Elevation.
130.21 991.07
155.37 991.07
Proposed Riffle XS
Flood rove Line- Station -: Elevation=
128.79 992.69
156.01 992.69
LFP 115 993
LFP 120 991.75
LTB 130 991.75
LCH 136 989.75
TWG 140 989.5
LCH 144 989.75
RTB 150 991.75
RFP 155 991.75
RFP 163 993.75
Prooosed Pool XS
LFP
LFP
LTB 128.5 991.75
LCH 137 989
TWG 140 988.75
LCH 143 989
RTB 148.5 991.75
RFP
RFP
reams "Fulneiers roof rarameters
Bankfull Area (ft2) 29 Bankfull Area (ft2) 36.5
Max Depth (Bkf) (ft) 2.25 Max Depth (BkO (ft) 3
Mean Depth (bkf) (ft) 1.45 Mean Depth (bko (ft) 1.8
Bankfull Width (ft) 20 Bankfull Width (ft) 20
Width/Depth Ratio 13.79 Width/Depth Ratio 11
Slope 4-5 (Mid-channel Slope; 3 Slope 4-5 (Mid-channel Slope) 3
Slope 5-6 (Channel slope) 16 Slope 5-6 (Channel slope) 12
Slope 6-7 (Channel slope) 16 Slope 6-7 (Channel slope) 12
Slope 7-8 (Bank Slope) 3 Slope 7-8 (Bank Slope) 2
.
Es C_
ENGINEERING
PAGE OF
CLIENT
SUBJECT
PROJECT T-P tC -3 PROJECT NO.
Prepared By Date
Approved By Date
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ENGINEERING
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SUBJECT
PROJECT NO.
Prepared By Date
Approved By Date
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TIOZ, - 3
i
Photo 7 Reach 2 lookint; downstream at old Photo 8 - Reach 2 looking downstream install new
culvert to be replaced b ford stream crossing. ford stream crossing.
r
Photo 9 - Reach 2 looking downstream, reshape Photo 10 - Reach 2 downstream extent looking
channel, seed and live stake stream banks. downstream, reshape channel, seed and live stake
stream banks.
r
Photo 1 I - Reach 3 next to youth camp looking Photo 12 Rcach 3 next to youth camp looking
upstream, seed and live stake bare portion of stream downstream, regrade stream bank, seed and live
bank, install bare root/ container plantings along stake.
corridor to prevent mowing.
-agar
11
1
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a t
'14. 44%
r
t
.;mss - ?
¢f
-' -
;-
4
. N
13 Reach 3 next to youth camp looking
-Fbo-to-- Photo 14 - Reach 3 next to youth camp looking
downstream, regrade stream banks, seed and live downstream, regrade stream bank, install rock vane,
stake, install bare root/ container plantings to seed and live stake. Install bare root/ container
prevent mowing where applicable. plantings along corridor to prevent mowing where
applicable.
-, .
elqn!
.4'
Photo 15 - Reach 3 next to youth camp looking Photo 16 - Reach 4 upstream extents looking
upstream, seed and live stake bare portion of stream downstream, reshape channel. Seed and live stake
bank, install bare root/ container plantings along stream banks. Install cross vane.
corridor to prevent mowing.
a
.4 02111
w _
r=
Photo 17 - Reach 4 middle portion looking Photo 18 - Reach 4 downstream extents, reshape
upstream, reshape channel. Seed and live stake channel. Seed and live stake stream banks.
stream banks. Install rock vane.
TWZ-3
ROCK VANE
.,7'
1/3
BOTTOM
WIDTH
TOP OF STREAMBANK
CHANNEL HEADER ROCK
Z'S # FLOW FLOW --? 4-/.T 0% LOPE
LU -2 0? l STREAMBED
ti 1
0'T030 ELEVATION
B
ACKFILL (ON-SITE ALLUVIUM)
CLASSASTONE FOOTER ROCK
Z¢ ` CLASS 1 STONE SCOUR POOL
(E
XCAVATED)
PROFILE VIEW
(s
COURPl
NO GAPS - SCOUR POOL (EXCAVATED) PER
BETWEEN DIRECTION OF ENGINEER
BOULDERS
s-BOTTOM WIDTH
PLAN VIEW
NOTES FOR ALL VANE STRUCTURES,
1. BOULDERS MUST BE AT LEAST4'x 3' x Z.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING ATTHE MIDDLE OF THE
HEADER ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM
FOOTER ROCK AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON
UPSTREAM SIDE OF VANE ARM, BETWEEN THE ARM AND STREAh18ANK
4. START AT 13ANKAND PLACE FOOTER ROCKS FIRST AND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
6. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT,
7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS
A STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE.
8. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE
STRUCTURE WITH ON-SITE ALLUVIUM TO THE ELEVATION OF THE TOP OF
THE HEADER ROCK
9. START SLOPE AT 2/3 T01 TIMES THE BANKFULL STAGE
SUCK 8000 Regency Parkway Suite 200
Cary, North Carolina 2751 27571
Phone: 919-483-5488
Fax: 919483-5490
CLASS A STONE--\ 1 I'F - HEADER ROCK
BACKFILL (ON-SITE ALLUVIUhp
FILTER FABRIC
? 1• FOOTERROCK
1_r CLASS 1 STONE
10' MIN11.1U
SECTION A - A
ROCK VANE (TfuC---3)
FLOOW
1
113 TOP WIDTH
C
B GRADE
z ?OINT
O Mpg` ?
A
VANE
:_ 7• -?
SILL
IB
SCOUR POOL
1 ?
VANEANGLE NO GAPS
20' TO 30' BETWEEN
BOULDERS
C
ROCK CROSS VANE TYPE 1
TYPE 1 CROSS VANE FOR GRAVEL/COBSLE BED RIVERS
WITH DRAINAGE AREAS GREATER THAN 12m?
FLOW -"-o.-
TOE OF
SECTION A - A
SILL
I I
PLAN VIEW VANE ARM LENGTH ` G FT
INVERT WIDTH ? FT
VANE ARM SLOPE 7 %
VANEANGLE a4 c
NOTES FOR ALL VANE STR CT IRPS•
1. BOULDERS MUSTSEATLEAST4'x3'XZ.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE HEADER
ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK, AND
THEN UPSTREAM TO A MINIMUM OF SIX FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. CONSTRUCT FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
5. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS A
STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
6. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE STRUCTURE
WITH ON-SITE ALLUVIUM TO THE ELEVATION OF ONE HALF THE HEADER ROCK
n 8000 Regency parkway Suite 200
4i Cary, North Carolina 2751 27511
Phone: 919-483-5488
Fax 919-463-5490
BANKFULL STAGE HEADER ROCK
B ? /- STREAM BANK
FLOW ---? B
t% TO 77 VANE ARL SLOPE
STREAM BED \\
ELEVATION \\\?\i\?\ FOOTER ROCK
PROFILE VIEW B - B
VANE ARM
FILTER
CROSS VANE INVERTIGRADE POINT
ROCK CROSS VANE TYPE 1 Cr1MC-s)
Faslc-1 PROFILE VIEW C - C
PLANTING SPECIFICATIONS
NOTES;
1. PLANT BARE ROOT SHRUBS AND TREES TO THE WIDTH OF THE
BUFFER AS SHOWN ON THE PLANS.
2. ALLOW FOR 6-10 FEET BETWEEN PLANTINGS, DEPENDING ON SIZE.
3. LOOSEN COMPACTED SOIL
TOP OF STREAMBANK 4. PLANT IN HOLES MADE BY A MATTOCK DIBBLE, PLANTING BAR,
OR OTHER APPROVED MEANS.
k 5. PLANT IN HOLES DEEP AND WIDE ENOUGH TO ALLOW THE ROOTS
TO SPREAD OUT AND DOWN WITHOUTJ-ROOTING.
6. KEEP ROOTS MOIST WHILE DISTRIBUTING OR WAITING TO PLANT
BY MEANS OF WET CANVAS, BURLAP, OR STRAW.
7. HEEL-IN PLANTS IN MOIST SOIL OR SAWDUST IF NOT PROMPTLY
PLANTED UPON ARRIVAL TO PROJECT SITE.
NOTE
1. WHEN PREPARING THE HOLE FOR A POTTED PLANT OR SHRUB
DIG THE HOLE 8 -12 INCHES LARGER THAN THE DIAMETER OF THE
POT AND THE SAME DEPTH AS THE POT.
2 REMOVE THE PLANT FROM THE POT. LAY THE PLANT ON ITS SIDE
IF NECESSARY TO REMOVE THE POT.
3. IF THE PLANT IS ROOTBOUND (ROOTS GROWING IN A SPIRAL
AROUND THE ROOT BALL), MAKE VERTICAL CUTS WITH A KNIFE
OR SPADE JUST DEEP ENOUGH TO CUT THE NET OF ROOTS.
ALSO MAKE A CRISSCROSS CUT ACROSS THE BOTTOM OF THE BALL
4. PLACE THE PLANT IN THE HOLE.
OF STREAMBANK 5. FILL HALF OF THE HOLE WITH SOIL (SAME SOIL REMOVED FOR BACKFILL).
6. WATER THE SOIL TO REMOVE AIR POCKETS AND FILL THE REST
OF THE HOLE WITH THE REMAINING SOIL
p"( ( 8001 Phone 91 1, 00
9-483-5488
1`L Jl Fwc 9194835490 BARE ROOT/ CONTAINER PLANTING
EROSION CONTROL MATTING
PLACE COIR FIBER MATTING IN 8 INCH DEEP
TRENCH, STAKE, BACKFILL, AND COMPACT
/- TOP OF STREAMBANK
TYPICAL MATTING STAKE
NOTES:
1. BANKS SHOULD BE SEEDED PRIOR TO
PLACEMENT OF MATTING.
2. PLACE COIR FIBER MATTING ACCORDING TO
MANUFACTURER RECOMMENDATIONS.
3. MATTING STAKES SHOULD BE PLACED
IN A DIAMOND SHAPED PATTERN.
THE WOOD STAKE SHALL BE THE NORTH AMERICAN
GREEN ECO-STAKE OR APPROVED EQUAL WITH THE
FOLLOWING DIMENSIONS:
LEG LENGTH 11.00 IN 7.94 CM
HEAD WIDTH 1.25 IN 3.18 CM
HEAD THICKNESS 0.40 IN 1.02 CM
LEG WIDTH 0.60 IN 1.52 CM (TAPERED TO POINT)
LEG THICKNESS 0.40 IN 1.02 CM
TOTAL LENGTH 12.00 IN 30.48 CM
DITCH
D 0 0 0 0 0 0 0 0 0 0 0
TOP OF
STREAMBANK - -
0
- -- -- --
0 --
-- -
0
- --
-- -
0
- --
-- -
0
- --
-- -
0
- --
-- -
0
- --
-- -
0 -- -
0 -- -
0 -- - --
0
0
0
0
0
0
0
0 - --
0 - --
0 - --
0 -
0
0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
PLAN VIEW
Is u l(a m 8000 Regency Parkway Suite 1200
l"lr.` Cary, North Carolina 27 27611
Phone: 919483-5488
Fa)c 919-483-6490
DITCH
TOP OF STREAMBANK
STAKES
COIR FIBER MATTING TO BE
EXTENDED TO TOE OF SLOPE
EROSION CONTROL MATTING
LIVE STAKING
TOP
CROSS SECTION VIEW
8'-8' SPACING
?KH?)IRJCJl1V ?! m con rnan
PLAN VIEW
n 8000 Regency Parkway Suite 200
Cary, North Carolina 27611
Phone: 9194835488
2 1 IV F T:: 221 Fax 919483-8490
TOP OF
STREAMSANK
TOE OF
TOP OF STREAMBANK
PLANT STAKES FROM TOP OF BANK
TO TOE OF BANK IN A DIAMOND SHAPED
STAGGERED PATTERN
PLAN VIEW
SQUARE CUT TOP
BUDS FACING UPWARD
LIVE CUTTING
M;N.12' DIA
7 - 3' LENGTH
ANGLE CUT
30-45DEGREES
LIVE STAKE DETAIL
NOTES:
1. STAKES SHOULD BE CUTAND INSTALLED ON THE SAME DAY.
2 DO NOT INSTALL STAKES THAT HAVE BEEN SPLIT.
3. STAKES MUST BE INSTALLED WITH BUDS POINTING UPWARDS.
4. STAKES SHOULD BE INSTALLED PERPENDICULAR TO BANK
& STAKES SHOULD BE 12 TO 2 INCHES IN DIAMETER AND 2 TO 3 FT LONG.
8. STAKES SHOULD BE INSTALLED LEAVING 115 OF STAKE ABOVE GROUND.
LIVE STAKING
TEMPORARY SILT FENCE
NOTES;
1. USE FILTER FABRIC A MItiMIUM OF 38" IN WDTH AND
FASTEN ADEQUATELY TO THE WIRE AS DIRECTED
BY THE ENGINEER
2. PROVIDE 5 STEEL POST OF THE SELF-FASTENER
ANGLE STEEL TYPE
Q 8000 Regency Parkway Suite 200
Cary, North Carolina 27511
lsux(crz Phone: 919483-5488
L: N 1, 11 1 :1 E fII 1 ; (-: t
Fa)c 919483-5490
FILTER FABRIC -
COMPACTED FILL
III-?? 8" ? ? I I
- 1L
STEEL
4"
EXTENSION OF FABRIC
INTO TRENCH
SILT FENCE
8' MAXIMUM
TREE OR SHRUB PLANTING DETAIL
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Erosion and Sediment Control Plan
Emergency Watershed Protection Program
Avery County
The following erosion and sediment control measures will be incorporated into all stream
repair sites.
1. The Contractor shall minimize vegetation disturbance by only working on the
stream bank and channel that is in need of repair. Existing buffers shall not be
disturbed unless directed by the designer.
2. The Contractor shall only enter the stream channel as shown on the plans or
directed by the designer. These stream accesses shall conform to the design
standards shown in the attached detail drawings. Timber mats may be used as a
substitute for rock per the approval of the designer.
3. The Contractor shall limit all bank and channel disturbance to activities that can
be completed by the end of each working day such that the work would remain in
place during an overnight storm event.
4. All equipment and uninstalled materials shall be removed from the channel at the
end of each working day and secured safely from potential out-of-bank flow
events that may occur prior to performing additional work.
5. Graded stream banks shall be stabilized with temporary and permanent seed and
coir fiber matting at the end of each working day. Seeding and coir fiber
matting specifications are included with this plan.
6. Stockpiles shall remain at least fifteen feet from flowing water and outside of the
top of bank. Silt fence shall be placed at the base of the stockpile between the
stockpile and the channel and must function to receive stockpile runoff before
entering the channel. Silt fence shall conform to design standards shown in the
detail drawings.
7. Temporary vegetation and permanent herbaceous vegetation shall be established
on all disturbed areas not already stabilized with matting, within five days after
construction is completed.
8. Permanent woody vegetations species are listed in the vegetation specifications;
planting details are also included.
Buck Engineering 1 of 8 River Works
TECHNICAL SPECIFICATION
Veactation Planting
General Seeding
Seeding should be done immediately upon completion of final grading. Apply seed prior
to installing matting. Prepare the soil surface so that it is smooth and free from stones,
clods, or debris that will prevent the contact of the matting with the soil. Fertilizer and
lime are generally not necessary on most projects, particularly not on sites that have been
used for agriculture production or cattle grazing. Urban soils may require amendments.
Seed should be broadcast with a centrifugal seeder or by hand, at the full rate along
stream banks and in stockpile areas. In all areas where permanent seeding is used in
addition to the temporary seed, mixing of the seed for broadcasting is acceptable. Seed
and amendments (if needed) should be covered to a depth of 1/2 to 1 inch with soil by
using a hand rake, drag or other tillage equipment.
Seeding may also be done with a hydroseeder. Wood cellulose fiber will not be
acceptable as a substitute for straw mulch. A suitable tracer shall be used to clearly
identify areas hydroseeded. A minimum of 500 lbs. per acre of wood cellulose fiber or a
non-toxic water base dye may be used as a tracer. Seed shall not remain in water
containing fertilizer more than 45 minutes before being used. All products used to
hydroseed shall be non-toxic to aquatic organisms.
Temporary Seeding
For temporary seeding, apply the following vegetation at the listed rates and times.
Temporary Seeding (September to March):
Rye grain 3 lbs per 1,000 sq ft or 1301bs per acre
Temporary Seeding (April to August):
Foxtail Millet 1 lb per 1,000 sq ft or 40 lbs per acre
A combination of the two temporary seed types shall be used during the boundary months
of March, April, August and September to ensure survival. In all disturbed areas where
no permanent seed is being used (i.e. yard or agricultural field) and temporary seed is not
desired at the higher rate, broadcast temporary seed at the lower rate of approximately 1/2
the full lbs/acre stocking rate. When used in conjunction with permanent seed mix, apply
at %2 the full lbs/acre rate.
Permanent Seeding
Permanent seeding will be accomplished using the mix listed below:
Buck Engineering 2 of 8 River Works
Riparian Seed List
Scientific name
Agrostis alba
Carex vulpinoidea
Elymus virginicus
Juncus effisus
Panicum clandestinzan
Polygonum pennsylvanicum
widen frondosa
Coreopsis lancolata
Cassia fasciculata
Verbesina alternfolia
Common Name % of Mix
Redtop 15%
Fox Sedge 10%
Virginia Wild Rye 20%
Soft Rush 5%
Deer Tongue 15%
Smartweed 5%
Beggers Ticks 5%
Lance leafed Coreopsis 15%
Partridge Pea 5%
Wingstem 5%
Seed at full rate of 15 lbs/acre along stream banks and in any stream buffer and wetland
areas.
Riparian Buffers
Trees and Shrubs
Trees and shrubs will be used to provide permanent vegetation for EWP repair sites.
Species used shall be selected from the following list:
Shrub and Small Trees
Scientific name Common name
Salix sericea Silky Willow
Xanthorhiza simplicissima Yellowroot
Physocarpus opulifolius Ninebark
Corms amonum Silky Dogwood
Hanranielis virginiana Witch-hazel
Carpinus caroliniana Ironwood
Corylus americana Hazel-nut
Alnus serrulata Tag Alder
Ostrya virginiana Hornbeam
Spirea tonientosa Hardhack
Rhododendron arborescens Smooth Azalea
Rhododendron maximum Rosebay Rhododendron
Cephalanthus occidentalis Button Bush
Itea virginica Virginia Sweetspire
Calycanthus floridus Sweet Shrub
Leucothoe axillaris var. editorum Dog Hobble
Hydrangea arborescens Mountain Hydrangea
Sambucus canadensis Elderberry
Buck Engineering 3 of 8 River Works
LargeTrees
Scientific name Common name
Aesculus octandra Buckeye
Tsuga canadensis Canadian Hemlock
Platanus occidentalis Sycamore
Acer rubrum Red Maple
Quercus alba White Oak
Quercus rubra Red Oak
Liriodendron tulipifera Tulip Poplar
Tsuga carolinianum Carolina Hemlock
Betula lento Cherry Birch
Trees shall be planted as either bare rooted or containerized material. Trees should be
planted at a rate of 400 stems/acre (roughly 10 feet on center) where EWP repairs have
been accomplished. Planting of this material will be done during the dormant season
(late fall and winter of 2005-2006). Refer to the attached details and specifications for
more information.
Stream banks
Live Staking
Species used for live staking shall be taken from the following species:
Scientific name Common name
Cornus anzomum Silky Dogwood
Salix sericea Silky Willow
Sambucus canadensis Elderberry
Cephalanthus occidentalis Buttonbush
Salix nigra Black Willow
Stake at 2-3 foot spacing on the outside of all meander bends. Stake at 6-7 foot spacing
on the inside of meander bends and all tangent sections. Note this is appropriate for most
rural systems. Urban or flashy systems should be staked at higher rates. Utilize as
diverse a species group as feasible and make sure that black willow constitutes less than
25% of total stakes used.
Containerized Plants:
Containerized shrub material may also be used on the stream banks to increase the
diversity. Applications and spacing should reflect that of live stake material.
Mulching
Mulching shall be used to provide temporary protection of soil surfaces from erosion.
Mulching should be performed within 48 hours of seeding. Grain straw mulch should be
applied on seeded areas at a rate of 75 bales per acre. Apply mulch uniformly.
Buck Engineering 4 of 8 River Works
Erosion Control Matting
Ecostakcs
Provide wooden stake not less than 12 in. (300 mm) in length with a notch cut 1 in. (25
mm) from the top. These stakes shall be used to stake the matting along the slopes.
Wooden 3 ft. stakes spaced approximately 4 ft. apart shall be used to secure the matting
at the toe of slope. The toe stakes shall have a minimum 1-inch by 1-inch cross-section
and shall be designed so that the matting can not slide past the exposed end of the stake.
Refer to the attached details and specifications for EWP work for more information.
Coir Fiber Matting
The erosion control matting shall be a machine-produced mat of 100% coconut fiber with
the following properties:
Matrix 100% Coconut Fiber
Weight 20 oz/SY (678 gm/m2)
Tensile Strength 1348 x 6261b/ft minimum (1650.5 x 766.5 kg/m)
Elongation 34% x 38%
Open Area (measured) 50%
Thickness 0.30 in minimum (7.6 mm)
Flexibility (mg --cm) 65030 x 29590
Recommended Flow 11 feet/second (3.35 m/s)
Size 6.6 x 164 ft (120 SY) or (100 SM)
"C" Factor 0.002
Place the coir fiber matting immediately upon final grading. Provide a smooth soil
surface free from stones, clods, or debris that will prevent the contact of the matting with
the soil. Apply seed prior to installing matting. Begin at the bottom of the slope by
anchoring the matting in a 6-inch (15 cm) deep by 6-inch (15 cm) wide trench. Backfill
and compact the trench after staking. Walking backward down the stream, allow the
matting to unroll slowly; ideally the matting roll will rest against your shin as you walk.
Stake the matting according to recommended stake pattern for specific product and slope.
(See stake pattern guide that comes with the product.) Place matting in full contact with
the soil.
The edges of the parallel matting must be staked with approximately 2 inches (5 cm) of
overlap such that the edge of the downstream matting is under the one just upstream.
When matting must be spliced down the slope, place matting end over end (shingle style)
with approximately 6 inches overlap. Drive stakes through the overlapped area.
Place stakes across the matting at ends, junctions and trenches approximately 1.3 ft apart.
Place stakes along the outer edges, down the center of each strip of matting and along all
lapped edges approximately 2 ft apart. Cut excess matting and anchor at the end of the
slope.
Buck Engineering 5 of 8 River Works
Temporary Stream Access Ramps
Stream access ramps shall be constructed using either rock or timber mats in locations as
shown on the plans or as directed. Grading shall be performed only to the extent needed
to form a stable ramp connecting the stream bank grade to the streambed. The Contractor
shall determine the appropriate number of timber mats and ramp angle according to the
equipment that will be using the ramp. Stream access ramps are temporary and shall be
removed and the areas restored to their original state when they are no longer needed or
permanent measures are installed.
Sediment Fence
Geotextile sediment fences shall be used to trap sediment from areas of limited runoff.
Sediment fences shall be properly anchored to prevent erosion under them. These works
are temporary and shall be removed and the areas restored to their original state when
they are no longer needed or permanent measures are installed. Locations for sediment
filters are shown on the plans. Refer to sediment fence specifications (6.62) in the NC
Erosion and Sediment Control Planning and Design Manual for material and installation
requirements.
Gravel Construction Entrance/Exit
Temporary gravel construction entrances shall be constructed as shown on the plans and
according to specification 6.06 of the NC Erosion and Sediment Control Planning and
Design Manual.
In-stream Structures
In-stream structures include w-weirs, cross vanes, j-hook vanes, log vanes, and wing
deflectors. The quantity of in-stream structures to be constructed shall follow approved
plans, but may be affected by conditions encountered during construction
Boulders used for in-stream structures shall be relatively flat on either side in the same
dimension, preferably the long dimension, and must have relatively smooth ends. No
more than 5% of the boulders shall be smaller than 3'x2'x2'. Boulders larger than
6'x4'x3' shall be permitted. Boulders found on-site and approved for use by the
Developer will be used to the extent feasible.
The Contractor shall construct in-stream structures with equipment capable of moving
and accurately placing boulders of approximate dimensions 6'x4'x3'. If suitable for
backfill, excavated material shall be placed on the upstream side of structures or as
directed. Unless otherwise approved by the Developer, excavation to prepare the
subgrade for the installation of in-stream structures shall be consecutive and continuous.
Once the excavation of a structure has begun, the structure shall be completed by the end
of the workday. All equipment shall be removed from the stream at the end of each
workday. Any accumulation of sediment in the channel shall be cleaned as needed
during construction and at the end of construction. No separate payment will be made for
this clean-up work.
Buck Engineering 6 of 8 River Works
Construction Sequence of Events
Construction shall be performed at the EWP site in accordance with the plans and in
general accordance with the following sequence:
1. Mobilize equipment and materials to the site.
2. Set up construction access pads, staging areas, haul roads, and silt fences.
3. Install stream access ramps.
4. Excavate and grade banks and construct in-stream structures.
5. Seed and mat graded banks and immediately upon reaching final grades.
6. Stabilize all disturbed soil with temporary and permanent seed prior to leaving the
site each day and prior to moving to the next work area.
7. Dispose of excess materials at approved off-site locations.
8. Remove stream access ramps.
9. Remove silt fence and seed and mulch staging areas to restore these areas to pre-
project conditions.
10. Demobilize grading equipment from the site. Remove construction access pads.
11. Plant bank, floodplain and buffer woody vegetation and live stakes during the
dormant season.
Buck Engineering 7 of 8 River Works
Details and Specifications for EWP Work
Planting
• Bare Root/Container Planting
• Brush Mattress
• Tree & Shrub Planting Details
• Live Staking
Erosion Control
• Erosion Control Matting
• Silt Check
• Silt Fence
• Typical Pump Around Operation
• Temporary Gravel Construction Entrance
• Ford Stream Crossing
• Ford Stream Crossing 2
• Temporary Ford Stream Crossing W/ Flume Pipe
Stream Repair Structures
• Typical Structure Placement
• Typical Plan View & Profile
• Constructed Riffle
• Double Drop Rock Cross Vane
• Double Wing Deflector
• "J" Hook Vane
• Log Vane
• Log Vane 2
• Log Step Pool
• Rock Vane
• Rock Cross Vane Type 1
• Rock Cross Vane Type 2
• Root Wads
• Single Wing Deflector
• Step Pool Channel
Buck Engineering 8 of 8 River Works
6/28/05
Subject: Cultural Resources Literature Search and Survey Results for Avery County NRCS Planned
EWP Undertakings
To: Jane Shaw, NRCS District Conservationist
Date of Survey: 6/14 - 15/2005
From : Jim Errante
USDA-NRCS, CRS SC & NC
1835 Assembly St., Rm 950
Columbia SC 29201
Phone: (803)253-3937
The following list of DSR's were reviewed by Jim Errante, NRCS Cultural Resources Specialist (CRS). A
literature search for each planed practice location took place in the Archaeological Map room of the NC Office
of State Archaeology. Each location was reviewed for the potential of NRCS planned activities to effect
cultural resources (CR's). In addition, photographs of the APE's were reviewed and discussions were held
with knowledgeable field office and the engineering staff in order to determine the potential of planned
activities to effect CR's at each EWP practice location. Each practice location received a ranking of a low,
medium or high potential to effect CR's.
All EWP practice locations receiving a medium or high ranking to effect cultural resources were
archeologically surveyed by the NRCS CRS. Archaeological survey procedures included reconnaissance
survey of all visible soils in the area including river bank profiles, and shovel testing. All shovel tested soils
were screened through 1/4 inch hardware mesh. The following Excel file list of EWP locations includes a
statement describing the results of this survey work. The NRCS CRS maintains the field work details of the
archaeological survey at each APE. Any questions concerning the results of these survey results as listed
below should contact the NRCS CRS for further explanation.
DSR #s CR Review Comments
BC 1 Elk Mills Low potential for impact to CR's FO to survey
BC 1 Elk Park Low potential for impact to CR's FO to survey
BC 2 Low potential for impact to CR's FO to survey
CB 1 Low potential for impact to CR's FO to survey
cc 1 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
CC 2 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
CC 3 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
DSR #s CR Review Comments
CC 4 Low potential for impact to CR's FO to survey
CH 1 Low potential for impact to CR's FO to survey
Cross Cr 1 Low potential for impact to CR's FO to survey
Cross Cr 2 Low potential for impact to CR's FO to survey
Curtis Cr 1 Low potential for impact to CR's FO to survey
Dellinger Br 1 Low potential for impact to CR's FO to survey
ER 1 Low potential for impact to CR's FO to survey
ER 2 Low potential for impact to CR's FO to survey
ER 3 No impact to CR's in area. All CR's are outside of APE. All work planned in-stream. Primarily debris
removal. Surveyed by CRS. Ok to proceed.
ER 5 No previously recorded CR's in area. Very disturbed soils in APE. No CR's. Surveyed by CRS. OK
to proceed.
ER 6 Low potential for impact to CR's FO to survey
ER 7 No previous recorded CR's. Alluvial, silty soils. Surveyed by CRS. Ok to proceed.
FC 1 Small Area, OK for FO to Survey
FC 2 Low potential for impact to CR's FO to survey
GP 1 Low potential for impact to CR's FO to survey
HB 1 Low potential for impact to CR's FO to survey
HP 1 Low potential for impact to CR's FO to survey
K 3 Low potential for impact to CR's FO to survey
K 4 Low potential for impact to CR's FO to survey
KC 1 Low potential for impact to CR's FO to survey
KC 2 Low potential for impact to CR's FO to survey
LEC 1 Low potential for impact to CR's FO to survey
LHC 1 Low potential for impact to CR's FO to survey
LL 1 Low potential for impact to CR's FO to survey
LR 1 No previously recorded CR's area. APE is roadside. Soils are disturbed. No CR's. Surveyed by CR
Specialist. OK to proceed.
LR 2 No previously CR's recorded in APE. This reach is primarily just debris removal or requiring fill. No
CR's in APE. Surveyed by CRS. Ok to proceed.
LR 3 No previously recorded CR's in APE. Only debris removal scheduled. No CR's in APE. Surveyed by
CRS. Ok to proceed.
LR 4 Low potential for impact to CR's FO to survey
LR 5 Low potential for impact to CR's FO to survey
LR 6 Low potential for impact to CR's FO to survey
LS 1 Low potential for impact to CR's FO to survey
LS 2 Low potential for impact to CR's FO to survey
LS 3 Low potential for impact to CR's FO to survey
LS 5 Low potential for impact to CR's FO to survey
LS 6 Low potential for impact to CR's FO to survey
LS 7 Low potential for impact to CR's FO to survey
LS 8 Low potential for impact to CR's FO to survey
LS 9 Low potential for impact to CR's FO to survey
LS 10 Low potential for impact to CR's FO to survey
LS 11 Low potential for impact to CR's FO to survey
LS 12 Low potential for impact to CR's FO to survey
MB 1 Low potential for impact to CR's FO to survey
Mrk 123 Low potential for impact to CR's FO to survey
MT 1 Low potential for impact to CR's FO to survey
MT 2 Low potential for impact to CR's FO to survey
MT 3 Low potential for impact to CR's FO to survey
MT 4 Low potential for impact to CR's FO to survey
NT 1 Low potential for impact to CR's FO to survey
NT 2 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
DSR #s CR Review Comments
NT 3 Low potential for impact to CR's FO to survey - primarily debris removal.
NT 4 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 5 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 6 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 7 Low potential for impact to CR's FO to survey (previously surveyed - No CR's)
NT 8 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 9 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 10 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 11 No previously recorded CR's in area. Impacts planned are adjacent to bridge and are disturbed and
heavily scoured. No CR's. Surveyed by CRS. Ok to proceed.
NT 12 No previously recorded CR's in area. No CR's. Surveyed by CRS. Ok to proceed.
NT 13 No previously recorded CR's in area. Survey focused on streambank stabilization areas. No CR's
discovered. Location will primarily involve debris removal. Surveyed by CRS. Ok to proceed.
NT 14 No previously recorded CR's in area. Survey focused on streambank stabilization areas. Significant
nursery agricultural impacts in area. No CR's discovered. Location will primarily involve debris
removal. Surveyed by CRS. Ok to proceed.
NT 15 No previously recorded CR's in area. Survey focused on streambank stabilization areas. Significant
nursery agricultural impacts in area. No CR's discovered. Location will primarily involve debris
removal. Surveyed by CRS. Ok to proceed.
NT 16 No CR's previously recorded in area. Location will primarily involve debris removal. No evidence of
CR's found. Surveyed by CRS. Ok to proceed.
NT 17 Low potential for impact to CR's FO to survey
NT 18 No previously recorded CR's in area. Very low terrace, and very scoured area. Area floods
frequently. No CR's. Surveyed by CRS. Ok to proceed.
NT 19 Low potential for impact to CR's FO to survey
PC 1 Low potential for impact to CR's FO to survey
PM1 Low potential for impact to CR's FO to survey
RB 1 Low potential for impact to CR's FO to survey
RC 1 No previously recorded CR's in area. Very disturbed soils in APE - re-routed stream & scoured area.
No CR's. Surveyed by CRS. OK to proceed.
SB 1 Newland Low potential for impact to CR's FO to survey
SB 1 V.Crucis Low potential for impact to CR's FO to survey
SC 1 Low potential for impact to CR's FO to survey
Sol Low potential for impact to CR's FO to survey
TMC 1 Low potential for impact to CR's FO to survey
TMC 2 Low potential for impact to CR's FO to survey
TMC 3 Low potential for impact to CR's FO to survey
TMC 4 Low potential for impact to CR's FO to survey
TMC 5 Low potential for impact to CR's FO to survey
UNR 4 Low potential for impact to CR's FO to survey
UNT 1 Low potential for impact to CR's FO to survey
UNT 2 Low potential for impact to CR's FO to survey
UNT 3 Low potential for impact to CR's FO to survey
UNT 5 Low potential for impact to CR's FO to survey
UNT 6 Low potential for impact to CR's FO to survey
UNT 7 Low potential for impact to CR's FO to survey
UNT 8 Low potential for impact to CR's FO to survey
DSR #s CR Review Comments
WC 1 Low potential for impact to CR's FO to survey
WF 1 Low potential for impact to CR's FO to survey
WF 2 Low potential for impact to CR's FO to survey (previously surveyed - No CR's)
WO 1 Low potential for impact to CR's FO to survey
WO 2 Low potential for impact to CR's FO to survey
WO 3 Low potential for impact to CR's FO to survey
WP 1 Low potential for impact to CR's FO to survey
WP 2 Low potential for impact to CR's FO to survey
Federally Threatened and Endangered Species Review
Based upon a memo submitted by Brian Cole of the United States Fish and Wildlife
Service (USFWS), dated June 21, 2005, no listed species or their habitats occur on this
site. The USFWS concur with the determination that the activities proposed at this site
will not affect endangered or threatened species or their habitats.
EWP - Avery County, North Carolina
DSR 11- TMC-1 & TMC-3
French Broad River Basin
2 5 1 !:D 7 0
Scope of Work
These sites are part of DSR group 11 located in southwest Avery County. This submittal
contains the remaining 2 sites for this group. Nine sites have been previously submitted.
TMC-1 and TMC-3 will require a Preconstruction Notification (permit) to the United
States Army Corps of Engineers. Site specific plans are attached and show site location,
existing conditions, estimated repair quantities and planned repairs. All repair work is
being proposed under the Emergency Watershed Protection Program that Avery County
is administering. Questions about this package should be directed to Buck Engineering's
Doug Smith, at 919-463-5488.
Contents
• Preconstruction Notification (Permit Application)
• Avery County EWP Index Map of DSR Groups
• Table 1. Property owners of sites proposed for repair under EWP.
• Repair plan and cost estimate for site TMC-1
• Repair plan and cost estimate for site TMC-3
• Avery County Plant List and Riparian Seed Mix
• Construction Details
• Erosion and Sediment Control Plan
k -1-7
SEP 1 2005
DENR - WATER QUALITY
?'ET 111 TOR ATER BRANCH
Office Use Only: Form Vcrsion May 2002
2 7 0
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 37
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 Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further deta Rlk'?R91 RtW D
II. Applicant Information
SEP 1 2005
1. Owner/Applicant Information DENR - WATER QUALITY
Name: Robert Wiseman (County Manager) WERANDS P14D STOWAVATER BRAKH
Mailing Address: County Administrative Offices
P.O. Box 640
Newland. NC 28657
Telephone Number: 828-733-8201 Fax Number: 828-737-9395
E-mail Address: Robert.wiseman(j?ncmail. 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: Doug Smith
Company Affiliation: Buck Engineering PC
Mailing Address: 8000 Regency Parkway, Suite 200
Cary, NC 27511
Telephone Number: 919-463-5488 Fax Number: 919-463-5490
E-mail Address: dsmithnbuclcent!ineering.com
Page I of 9
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: Avery EWP, Group 11.
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): See attached Table 1.
4. Location
County: Avery Nearest Town: Newland, NC
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): The location of each site is
attached on the EWP Index Map and provided in each individual site repair plan.
5. Site coordinates; if available (UTM or Lat/Long):Attached in site repair plan.
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres
7. Nearest body of water (stream/river/sound/ocean/lake): Three Mile Creek.
8. River Basin: French Broad River
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: A site specific description is in each site plan.
10. Describe the overall project in detail, including the type of equipment to be used: Specific
repair activities for the site are provided in the site repair plans which are attached. Repair
activities proposed for the site include: installing vane structures to protect unstable stream
Page 2 of 9
banks, and removing unstable woody debris. This work will require the use of a trackhoe
with hydraulic thumb and a dump trick to haul and place boulders and remove woody debris.
A bulldozer may be needed for some of the grading work. A logging winch will help debris
removal easier
11. Explain the purpose of the proposed work: This work is being done as part of the
Emergency Watershed Protection program that counties impacted by 2 Hurricanes in the Pall
of 2004 are carrying out. The purpose of the work is to repair damaged stream reaches that
are unstable and continuing to cause loses to personal and public property and to public
resources by degrading water quality and other natural resources.
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.
To our knowledge permits have not been issued for work at these sites in the past.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
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.
Page 3 of 9
I . Provide a written description of the proposed impacts: Impacts from this work will be
minimized whenever possible. However to accomplish these needed repairs impacts maybe
realized from temporary increased turbidity, removal of aggraded bed material and temporary
loss of herbaceous vegetation. Long-term impacts will be an increase in stream bank
stability, stable dimension and profile and improved vegetative cover.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
(es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0
Total area of wetland impact proposed: 0
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma *
Type of Impact Length of Impact
(linear feet)
Stream Name** Average Width of
Stream Before
Impact Perennial or
Intermittent?
(please seci
Channel grading,
TMC-1 installing boulder 1150' Three Mile Creek 20'-30' Perennial
structures.
Channel grading,
TMC-3 installing ford
stream crossing and 2250' Three Mile Creek 25'-35' Perennial
boulder structures
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.uses.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 3400'
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Page 4 of 9
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres
Waterbody
Name
(if applicable) Type of Waterbody
(take, pond, estuary, sound,
bay, ocean, etc.
N/A
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: till, excavation, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
Access to each site will be over the most stable route possible and movement of vehicles over
access routes will be minimized. Wherever possible equipment work will be done from the
stream bank. Operating equipment within the channel will be done when this is the only way to
accomplish needed work. Excavated material will be moved directly to trucks for hauling to _
disposal sites when it will not be used on site. When excavated material will be used on site it
will be handled as few times as possible. Work at each site will be accomplished as quickly as
possible and the site will be stabilized with erosion control matting and seeding within 5 days of
site completion. Trees will be planted during the next dormant season. Equipment leaking and
fluids will not be used and if leaks occur during construction the equipment will be replaced or
repaired immediately. Sediment and erosion control measures, including silt fence, stoned
entrances, protected stock pile areas, diversions and check dams, will be employed to minimize
sediment movement off site.
VIII. Mitigation
Page 5 of 9
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
httn://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
(919) 733-5208 to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Page 6 of 9
Amount of Coastal wetland mitigation requested (acres): N/A
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes N No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-5083 to review current thresholds for environmental documentation.
Yes ? No N
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 213 .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No N If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
s uare feet Multiplier Required
Mitigation
1 3
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from near bank of channel; "Lone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 7 of 9
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
There will be no change in impervious acreage. Existing project sites are agricultural lands and
will remain in this land use. Proposed repair work will not alter runoff of stormwater from each
site. The end result of this proposed work will be stream banks that are better able to withstand
the erosive forces generated by storm flows.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
N/A, waste water will not be generated by this project
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
N/A
Page 8 of 9
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
Plan Review Checklist
EWP-Avery County, Forth Carolina
DSR - % ryle / -
Mc
?at
Z?ue, L
I
the Natural Resource Conservation Service Agent for Avery
County, have reviewed the stream repair plans listed below. These plans have been
prepared by Buck Engineering PC to accomplish stream repair under the Emergency
Watershed Protection Program being administered by Avery County. The following table
Additional comments:
f
SGT Natural Resource Conservation Service Agent
Agent's SigRSa=
summanzes my comments on these plans:
To Whom It May Conccrn:
I, Robert Wiseman, County Manager for Avery County, attest to the fact that Avery County has
entered into a contract with Buck Engineering PC, a North Carolina professional corporation. Buck
Engineering will be providing engineering services and permitting assistance in support of the
Emergency Watershed Protection Program. In this contractual relationship, Buck Engineering will
act as the County's agent for the purpose of accomplishing this work. Specifically, employees of
Buck Engineering may take those actions necessary to obtain environmental permits from the U. S.
Army Corps of Engineers, N. C. Division of Water Quality, and N. C. Division of Land Quality.
i
Robert Wiseman, County Manager for Avery County
Date: & ?? ' d S'
Office: Avery County Courthouse, Newland, NC 28657
Table 1. Property owners of sites proposed for repair under the EWP program in Avery County County. DSR site relates to the number shown on the Index Map.
DSR NUMBER DSR SITE PIN NAME 1 ADDRESS 2 CITY/STATE ZIPCODE Non wen Type Lenath
11 TMG1 182200166313 CALLOWAY, C W & LOUISE 1350 THREE MILE HWY NEWLAND, NO 28657 35.98283 81.9712 Channel cradina, landscaoino, and intall 3 structures. 750 ft
11 TMC-1 181200967451 FISHER, PHILLIP S 160 HIGHTOP LANE NEWLAND, NC 26657 35.98458 81.97538 Channel relocation, landscacino, and instal 6 structures. 450 ft
11 TMC3 182300118042 3 MILE FARMS, LLC 1517 OLD CREWS RD KNIGHTDALE, NO 27545 35.98965 81.96786 Channel relocation, radio , landscacin , install structure and culvert. 650 ft
11 TMC3 182300118042 3 MILE FARMS, LLC 1517 OLD CREWS RD KNIGHTDALE, INC 27545 35.99643 81.96867 Channel relocation, cradin and landscaoin.. 750 ft
11 TMC3 182200083490 AVERY COUNTY PRISON CAMP 245 PRISON CAMP RD NEWLAND, NO 28657 35.98693 81.97241 Grading, landscaoin and install2 structures. 1250 ft
11 TMC3 181200968609 MC FEE, ROY & MENTHA ANN 864 PRISON CAMP RD NEWLAND, NC 28657 35.98528 81.97455 Channel realignment, grading, landscacin , and instal four structures. 700 ft
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'? LEGEND Avery County EWP
[S U (C i DSR Group 11 Index Map of DSR Group 11
F N( -i I N I Ii IL I N (i
Field Crew: O DSR sites included in this submittal: TMC-1 & TMC-3 " 1 2 4
TimelDate: Miles
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BUCK very County -401, j, LEGEN7
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Hold Crew:
TimalDatc
Vicinity Map
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TMC -3
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182200069436
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1822001401899
BUCKLEGEND
F N (i I N 1± F R I N (i 'A
I 10 50 100 200
Data of aerial photography: 1998 Feet
Date of aerial photography: 1998 I I 0 50 100 20Feet
DSR No. TMC-1
Site Assessed By: KSM, CLY
Date Assessed: 6/16/2005
Length of Approximately 2500 feet
Assessment:
Location: Adjacent to Three Mile Highway (HWY
194)
County: Avery
Lat.: 35° 59'03" / Long.: 81 ° 58' 30"
Waterbody:
Three Mile Creek (0.98 mil)
X Debris removal Channel realignment X Seeding
X Bank sloping X In-stream structures X Adjust channel dimension
X Bank stabilization X Riparian planting
Summary Evaluation of Conditions:
This site has been divided into two distinct reaches. Reach 1 begins immediately downstream from Garmon Ln. and
extends approximately 1200' downstream where it ends in the vicinity of an old barn. This reach has experienced
moderate-severe bank erosion and debris deposition throughout.. Approximately 250' downstream from Garmon Lane
a small dam was breached and much of impoundment has been eroded. Moving downstream approximately 200',
deposition has accumulated in the channel, and a headcut is propagating upstream through the channel bed.
Aproximately 250' downstream from this point more deposition has occurred followed by another headcut. Reach 2
begins approximately 500' upstream from the High Top Rd culvert and ends at this culvert. This reach experienced
severe bank erosion and it is threatening to undercut a driveway to the Fisher residence.
Recommendations for Repair:
Prior to performing any clearing, grubbing or debris removal activities, inventory, under engineer approval, any
adequate root wad or transplant material. These items should be stockpiled; then installed or transported at the
appropriate time.
In reach 1, armor left channel bank with Class 1 rip rap and grade right bank to stable 2:1 slope in the vicinity of
breached dam. Remove debris from existing channel. Compact, seed, mat, and live stake. Make profile adjustments
in the vicinity of stream deposition as per "Reach 1 Profile Design." Install a double drop cross vane at Sta -14+42.
For Reach 2, armor channel bank with Class 1 rip rap and grade right bank to stable 2:1 slope. Seed, mat, and
livestake. Install bare root and container plantings along stream corridor. Install one rock vane and one cross vane.
All work should be performed in conformance with the "Erosion & Sediment Control Plan" (see
Quantities:
Item Unit Quantity
Grading bank preparation) CY 150
Live Stakes EA 1050
Erosion Control Matting SY 975
-Temporary Seeding LB 40
Grain Straw Mulch EA bales 25
Silt Fence LF 1000
Permanent Seeding LB 5
Rip Rap, Class 1 Tons 154
Rip Rap, Class A Tons 41
Filter Fabric SY 66
Boulders 2x3x4 in size Tons 151
Reach 1 Profile Design
1010
1005
1000
995
o .
> 990
w
985
980
975
970
j In?tajl Dpu le Prop
Cron -V n
S .13+
Gadt3.%loe N?i
1000 1100 1200 1300 1400 1500 1600 1700 1800
Station
?-TWG
LTB
RTB
x WSF
1900
E N G I N E E R I N G
PAGE OF _
CLIENT PROJECT PROJECT NO.
SUBJECT ?ro3S Sa?'1-' l?sz? Prepared By Date
Approved By Date
t
-
--
--
- ------- ---- --- - -------
4
I
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, i
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scale: 4 sq./inch.
/C -HEADER ROCK
FLOW --?
4 70 8 / SLOPE
STREAM BED vt
ELEVATION
113 1!3 1/3 <:y -
BACKFILL (ON-SITE ALLUVIUM) FOOTER ROCK
BOTTOM BOTTOM BOTTOM 957 STONE FILTER FABRIC
WIDTH OF WIDTH OF 1MDTH OF CLASS A STONE
CHANNEL CHANNELCHANNEL
CLASS 1 STONE PROFILE VIEW
VARIE -
03 q C r F
# 57 STONE
- - r ;, CLASS 1 STONE
'r l BACKFILL(ONSITEALLUVIUNp ?TREAMBED ?I
BACKWATER
8a: POOL
- - 1 CLASS A STONE
f / \ 1 a FILTER FABRIC
f `?r ?-VYMIN;MuM
SECTIONA - A
SCOUR .
( POOL
NO GAPS I
BEM'EN FLOODPLAIN SILL
BOULDERS NOTES FOR ALL VANE STRUCTURES:
` POOLS (EXCAVATED) PER I. BOULDERS MUST BE AT LEAST 4' x Tx 2'.
DIRECTION OF ENGINEER 2. INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE HEADER
DEPTH - AVERAGE BANKFULL DEPTH x 1.5 TO 2.0 ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK
AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG ATRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREAM BANK
PLAN VIEW 4. START AT 13ANKFULLAND PLACE FCOTER ROCKS FIRST AND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, F0LL0WNG ANGLE AND SLOPE SPECIFICATIONS.
8. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT.
?j- ?+ C f? I l 7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND
CLASS A STONE TO FILL GAPS ON
SIDE OF CLASS 1
(I ` /'?JO p,?i r"? 7 + 1 ?/? •`? a'`? I? (t? ,? ?? `~ •+ 8. AFTER ALL STONE HAS E N PLACED, FIN i THE UPSTREAM SISDE OF THE STRUCTURE
WITH ON-SITE ALLUVIUM TO THE ELEVATION OF THE TOP OF THE HEADER ROCK
? )I"'I 8000 Regency Parkway Suits 200
BED ?,r`?',, Cary, North Carolina 27511
Phone: 919-4635488
Fax: 9194835490
DOUBLE DROP ROCK CROSS VANE
(mc- I
e.
LIED
ENGINI?I;RING ?"'?
PAGE
CLIENT PROJECT :\j-jyj ; PROJECT NO.
SUBJECT Onit lQ Oferp -t ?" Prepared By
Date
Approved By Date
Flo
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scale: 4 sq./inch ??o ..1GrSJ
ROCK CROSS VANE TYPE 1
FLOW TYPE 1 CROSS VANE FOR GRAVEL(COBBLE BED RIVERS
WITH DRAINAGE AREAS GREATER THAN 12mi'
FLOW -?
O
SILL
.. B
C
B GRADE
POINT
VANE
SCOUR POOL
1 j
[NO GAPS
VANEANGLE ErAFEN
20' TO 30' OULDERS
C
SILL
PLAN VIEW VANE ARM LENGTH A FT
INVERT WIDTH q- FT
VANE ARM SLOPE 1- %
VANE ANGLE - ,
NOTES FOR ALL VANE STRUCTURES:
1. BOULDERS MUST BE AT LEAST 4'xTxZ.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE HEADER
ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK, AND
THEN UPSTREAM TO A MINIMUM OF SIX FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. CONSTRUCT FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
5. USE CLASS 1 STONE TO FILL GAPS ON UPSTREA161 SIDE OF BOULDERS, AND CLASS A
STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
6. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE STRUCTURE
WITH ON--SITE ALLUVIUM TO THE ELEVATION OF ONE HALF THE HEADER ROCK
?7 ^
,8000 Regency Parkway Suits 200
Cary, North Carolina 2751 27511
Phone: 919-4635428
Fa)c 9194635490
9.
TOE OF BANK
SECTION A - A
BANKFULLSTAGE HEADER ROCK
STREAM BANK
FLOW ? 41 To 72 VASE A"" SLOPE B
STREAM BED
ELEVATION ??o \ \j
FOOTER ROCK
PROFILE VIEW B - B
VANE ARM
FILTER FABIC
PROFILE VIEW C - C
ROCK CROSS VANE TYPE 1
CROSS VANE INVERT/GRADE POINT
ROCK VANE
w
N
z
m
113
BOTTOM
WIDTH
OF
CHANNEL
FLOW
r pQ
`J
(SCOUR P(
NO GAPS
BETWEEN
BOULDERS
BOTTOM W
PLAN VIEW
SCOUR POOL (EXCAVATED) PER
DIRECTION OF ENGINEER
TOP OF
FLOW -?
STREAMSED
ELEVATION
i
BACKFILL (ONSITEALLUVIUM) `? .
CLASS A STONE
CLASS 1 STONE-/
CLASS A
BACKFILL (ON-SITE ALLUVIUM)
NOTES FOR ALL VANE STRUCTURES:
1. BOULDERS MUST BE AT LEAST 4' x 3'x Z.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE
HEADER ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM
FOOTER ROCK AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON
UPSTREAM SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. STARTAT BANK AND PLACE FOOTER ROCKS FIRST AND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
8. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT.
7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS
A STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
8. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE
STRUCTURE WITH ON-SITE ALLUVIUM TO THE ELEVATION OF THE TOP OF
THE HEADER ROCK
9. START SLOPE AT 213 T01 TIMES THE BANKFULL STAGE.
FILTER
4% TO 1
8?6
PROFILE VIEW
STONE--\\J 1 1' F
?r
L10' MINIM?U
SECTION A - A
HEADER ROCK
'-- FOOTER ROCK
SCOURPOOL
(EXCAVATED)
HEADER ROCK
FOOTER ROCK
CLASS 1 STONE
? 8001 Regency Parkway Suite 00
Phone: 119-83-5488 1
L Tom! 1[= {V Fax: 919-483-5490 ROCK VANE V E (TAAC r
[!M3 u T=:, E?K
ENGIN FIRING
PAGE OF
CLIENT PROJECT PROJECT NO.
SUBJECT Prepared By Date
Approved By Date
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Prepared By Date
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Photo I Upper extents of Rcach 1 looking Photo 2 Reach 1, install rip rap toe protection and
downstream, perform grading, seed, mat and live grade to stable bank angle
stake.
c
Photo 3 Reach I, perform cross sectional and Photo 4 Reach 1, install double drop cross vane.
profile adjustments, seed, mat, live stake to stabilize
stream banks.
r- -
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Photo 5 - Reach 1, perform cross sectional - _ :
. y1?? ??lc'rii •. ,: .
Photo 6 - Rcach 1, perform cross sectional and
adjustments, seed, mat, live stake. profile adjustments.
j ?
7 - Reach 1,
I'hoto I IReach 2, upper extents,
stream bank, seed, mat, live stake.
cross
left Photo 12 - Reach 2, armor left bank, grade right
bank, seed, mat, live stake, and plant bare root
]ants.
7??z .-,/
i
....
Map Inset
11X.5 1\e 11« •'r'Arh"
� � f
IP
ifighw
f
� r
� / s
a
Y „
3' I9 1
4' I J145
AN
very county EGEND (Group 11) Site:TMC-3
BUCK O Avery County EWP
DSR Sire I partch
Field Crew: n wo �... tttj - T.pn (5' fimo,uee) 0 150 300 600
- Feel
TlmelOeb: cT}J • Oata of aerial photography: 1998
L1822�
-
182200069436
18120094083• I
a
a
.;• � � �' •, 18220016400
' 161200958993
181200955933 132200166313
t7
®cgc LEGEND Q ,yy,� �a� ,� c�j_ //{� �./1 N RECOMMENDATIONS FOR REPAIR
r N C I N r l a l ti r, * 4 �, ROOT��K.� �h.M� 'r�i v • oA Va"ti4� (Group 11) Site: TMC-3 (Map 2)
p ((( � Avery County EWP
//i/ ��-pad,►- Sfr>r.ccw. t3a,�,, k - (pct cross
0 100 200 400
Data of aerial photography: 1891 Vat
Feet
DSR No. TMC-3
Site Assessed By: KSM, JBG
Date Assessed: 5/25/2005
Location: Adjacent to Prison Camp Road.
County: Avery
Lat.: 35° 59' 32" / Long.: 81 ° 58' 06"
Length of Approximately 4300 feet
Assessment: Waterbody:
Debris removal Channel realignment
X Bank sloping X In-stream structures
X Bank stabilization X Riparian planting
Three Mile Creek (1.63 mi)
X Seeding
X Adjust channel dimension
Summary Evaluation of Conditions:
This site begins upstream with an unnamed tributary (UT) of Three Mile Creek. The damaged reach begins
approximately 700' upstream of Prison Camp Road on the UT. The UT experienced severe bank erosion, and just
upstream of the Prison Camp Rd. culvert major deposition occurred. The UT continues dowstream and joins Three
Mile Creek about 200' downstream from the culvert. This section has severely eroded banks, which destroyed a
culvert on the 3 Mile Farms, LLC property. This culvert provided access to the south side of the property. Just
downstream from the old culvert, major deposition has settled in the stream near a horse arena on the 3 Mile Farms
property. Continuing downstream through the Youth Camp and Three Mile Highway (2700'), several areas have
moderate to severe bank erosion and widening of the channel.
Recommendations for Repair:
Prior to performing any clearing, grubbing or debris removal activities, inventory, under engineer approval, any
adequate root wad or transplant material. These items should be stockpiled; then installed or transported at the
appropriate time.
This site is divided into four reaches (See Recommendations for Repair Figures). Reach 1 is located at the most
upstream extent, just upstream of Prison Camp Road. Repairs to this reach will involve cross sectional adjustments
(See Cross Section Design X1). Once grading is complete, seed and live stake stream banks.
Reach 2 begins approximately 200' downstream from Prison Camp Road. Repairs to this reach will involve cross
sectional adjustments and landscaping. The cross section data (X2) shows adjustment to the cross section channel
geometry. Once grading is complete, seed and live stake stream banks. Install ford stream crossing at location of
damaged culvert.
Reach 3 is located adjacent to the vacant youth camp. Repairs to this reach will involve stream bank grading, boulder
structure installation, seeding, live staking and bare root planting. See "Recommendations for Repair" figure for
location of repairs.
Reach 4 is the most downstream extent of this site, just upstream from Three Mile Highway (NC HWY 194). Repairs
to this reach will involve cross sectional adjustment and boulder structure installation. The cross section data (X3)
shows adjustment to the cross section channel geometry. Once grading is complete, seed and live stake stream
banks. See the "Recommendations for Repairs" figure for placement of the boulder structures.
All work should be performed in conformance with the "Erosion & Sediment Control Plan" (see attached
Quantities:
Item Unit Quantity
Grading bank preparation) CY 550
Live Stakes EA 600
Erosion Control Matting SY 3800
Temporary Seeding LB 168
Grain Straw Mulch EA bales 100
Silt Fence LF 1500
Permanent Seeding LB 13
Rip Rap, Class 1 Tons 73
Rip Rap, Class A Tons 40
Filter Fabric SY 63
Boulders 2x3x4 in size Tons 115
C
ENGINEERING
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CLIENT PROJECT 7 G -3 PROJECT NO.
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X1 Cross-section Data:
Feature'- Stream:.
BKF-Area -
BKF Width 8KF
Depth Max BKF
Depth ".::
-' W1D
BH Ratio
- ER
BKF Eleu
TOB Elev
16.5 20.34 0.81 1.32 25.15 2.2 1.7 1004.18 1005.74
1006.5
1006
1005.5
0 1005
R 1004.5
1004
M 1003.5
1003
1002.5
1002
Cross Section X1
-0 - • Bankfull
-0 - - Floodprone
Proposed Riffle XS
-6 Existing XS
-Proposed Pool XS
100 110 120 130 140
Station
150 160 170
Pt # '- North' . East" " :'Elevation Note Station
103 5357.597 4989.569 1005.493009 X1-RIFFLE 100
104 5360.674 4960.047 1006.115908 X1 LTB 129.6774
105 5360.936 4958.729 1003.67395 X1 131.0122
106 5360.978 4957.212 1003.244218 X1 LCH W 132.5282
107 5361.487 4955.031 1003.075752 X1 134.7438
108 5361.28 4953.235 1002.863972 X1 TWG 136.5163
109 5361.432 4948.746 1003.140239 X1 141.001
110 5361.887 4945.284 1003.42823 X1 RCH 144.4896
111 5361.293 4938.589 1004.184014 X1 151.1089
112 5362.401 4929.104 1004.017305 X1 160.6541
113 5362.968 4925.664 1004.05512 X1 164.1303
114 5363.448 4924.256 1005.738914 X1 RTB 165.5745
115 5363.807 4917.418 1005.559513 X1 172.4182
Bankfull Line
[Station, ` Elevation
130.74 1004.18
151.07 1004.18
P-n-1 Piffle YC
Flood prone Line-
Station', Elevation
130.02 1005.5
165.37 1005.5
LFP 120.75 1006
LFP 124.75 1005
LTB 139.75 1005
LCH 145 1003.5
TWG 148 1003.25
LCH 151 1003.5
RTB 156.25 1005
RFP 171.25 1005
IRFP 173.25 1005.5
Riffle Cross Section Parameters
Bankfull Area (ft2) 16.5
Max Depth (Bkf) (ft) 1.75
Mean Depth (bkf) (ft) 1.1
Bankfull Width (ft) 15
Widtti/Depth Ratio 13.6
Slope 4-5 (Bank Slope 3
Slope 5-6 (Channel sic 12
Slope 6-7 (Channel slc 12
Slope 7-8 (Bank Slope 3
Proposed Pont XS
LFP
LFP
LTB 139 1005
LCH 145 1003
TWG 148 1002.5
LCH 151 1003
RTB 155 1005
RFP
RFP
Pool Cross Section Parameters
Bankfull Area (ft2) 23.5
Max Depth (Bkf) (ft) 2.50
Mean Depth (bkf) (ft) 1.47
Bankfull Width (ft) 16.0
Width/Depth Ratio 10.9
Slope 4-5 (Bank Slope) 3.0
Slope 5-6 (Channel slope) 6.0
Slope 6-7 (Channel slope) 6.0
Slope 7-8 (Bank Slope) 2.0
X2 Cross-section Data:
Feature Stream `
T e'.
BKF'Area
BKF Width '- BKF
Depth Max BKF.
Depth
W/D
L
BH Ratio
ER
BKF EVev
TOB Elev
26.8 19.57 1.37 1.94 14.31 1.6 1.6 980.5 981.71
Cross Section X2
984
983
c 982
0
981
ei 980
w 979
978
977
0-- Bankfull
o - - Floodprone
Proposed Riffle XS
4, Existing XS
Proposed Pool XS
95 105 115 125 135
Station
145 155
Pt # North'•' East ' ` :`` Elevation Note '` Station'-
221 4396.508 4645.093 983.019874 X2-RIFFLE 100
222 4398.958 4630.801 981.705901 X2 LTB 114.4819
223 4399.099 4628.799 980.058694 X2 116.4862
224 4399.506 4627.434 979.230923 X2 117.8899
225 4400.106 4625.629 979.006149 X2 LCH W 119.7535
226 4399.811 4624.411 978.85034 X2 120.9283
227 4399.742 4622.435 978.939865 X2 122.8814
228 4398.742 4618.624 978.55738 X2 TWG 126.5464
229 4398.072 4615.618 979.114937 X2 RCH 129.4517
230 4397.757 4610.324 979.49881 X2 134.6709
231 4398.786 4607.681 982.724701 X2 RTB 137.4172
232 4403.505 4586.679 982.969522 X2 158.8314
Bankfull Line - '
Station Elevation -`
115.95 980.5
135.52 980.5
Prooosed Rifflo XS
Flood prone Line ."
Station'Elevation`
106.36 982.44
137.18 982.44
LFP 99 982.85
LFP 107 980.85
LTB 117 980.85
LCH 123 978.85
TWG 126 978.6
LCH 129 978.85
RTB 135 980.85
RFP 150 980.85
RFP 158 982.85
Prooosed Pnnl XS
LFP
LFP
LTB 116 980.85
LCH 123 978.1
TWG 126 977.85
LCH 129 978.1
RTB 133 980.85
RFP
RFP
rime rarameters Pool Parameters
Bankfull Area (ft2) 24.75 Bankfull Area (ft2) 32.38
Max Depth (Bkf) (ft) 2.25 Max Depth (Bko (ft) 3
Mean Depth (bko (ft) 1.375 Mean Depth (bkf) (ft) 1.90
Bankfull Width (ft) 18 Bankfull Width (ft) 17
Slope 4-5 (Mid-channel Slope 3.0 Width/Depth Ratio 8.93
Slope 5-6 (Channel slope) 12.0 Slope 4-5 (Mid-channel Slope) 2.55
Slope 6-7 (Channel slope) 12.0 Slope 5-6 (Channel slope) 12
Slope 7-8 (Bank Slope) 3.0 Slope 6-7 (Channel slope) 12
Slope 7-8 (Bank Slope) 1.45
X3 Cross-section Data:
Stream: BKF . PAax BKF:
Feature Type ; BKF Area BKF Width Depth Depth W/D BH Ratio ER BKF Ele
I TOB Elev
31.6 25.16 1.25 1.63 20.05 2 1.1 991.07 992.69
996 Cross Section X3
995
r 994
2 993
?
992 .....................................
- : -0 • •Bankfull
d -0 Floodprone ....................?.........
w 990 Proposed Riffle XS
0 Existing XS
989 Proposed Pool XS
988
95 105 115 125 135 145 155 165
Station
Pt #: ' . North East Elevation- 1:7 Note Station r
76 4859.983 4972.203 993.246137 X1 RIFFLE 100
77 4884.991 4957.348 992.691748 X1 LTB 128.7886
78 4886.836 4955.896 990.013613 X1 131.1365
79 4888.138 4954.3 990.04783 X1 LCH W 133.1516
80 4890.875 4952.124 989.440386 X1 TWG 136.648
81 4899.605 4943.478 989.764543 X1 RCH 148.8718
82 4904.354 4939.481 990.316752 X1 155.078
83 4905.411 4939.006 993.179692 X1 RTB 156.1987
84 4920.077 4923.671 995.332843 X1 177.2432
Bankfull Line
Station :> `- Elevation
130.21 991.07
155.37 991.07
Proposed Riffle XS
Flood prone Line .
Station Elevation
128.79 992.69
156.01 992.69
LFP 115 993
LFP 120 991.75
LTB 130 991.75
LCH 136 989.75
TWG 140 989.5
LCH 144 989.75
RTB 150 991.75
RFP 155 991.75
RFP 163 993.75
Pronnsed Pnol XS
LFP
LFP
LTB 128.5 991.75
LCH 137 989
TWG 140 988.75
LCH 143 989
RTB 148.5 991.75
RFP
RFP
Kimo varameters fool varameters
Bankfull Area (ft2) 29 Bankfull Area (U) 36.5
Max Depth (BkO (ft) 2.25 Max Depth (Bkf) (ft) 3
Mean Depth (bko (ft) 1.45 Mean Depth (bkf) (ft) 1.8
Bankfull Width (ft) 20 Bankfull Width (ft) 20
Width/Depth Ratio 13.79 Width/Depth Ratio 11
Slope 4-5 (Mid-channel Slope; 3 Slope 4-5 (Mid-channel Slope) 3
Slope 5-6 (Channel slope) 16 Slope 5-6 (Channel slope) 12
Slope 6-7 (Channel slope) 16 Slope 6-7 (Channel slope) 12
Slope 7-8 (Bank Slope) 3 Slope 7-8 (Bank Slope) 2
i ?
ENGINEERING 7
CLIENT
SUBJECT
PAGE OF
PROJECT T-I/u C -3 PROJECT NO.
Prepared By Date
Approved By Date
- - -- -- - - -- --- ---, - - -? ; - ; - - --; ----- ;
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PROJECT
SUBJECT
PAGE OF
PROJECT NO.
Prepared By_
77?4C-3 Approved By
Date
Date
--- ?1
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ALL
Photo 1 - Reach I near upstream extent, reshape
channel. Seed and live stake stream banks.
I Lii -, A. 0
Photo ? Rcuch 1, reshahc ch,itmcl.
2 - Rcach 1, reshape channel. Seed and live
stream banks.
, 44
q ?
Photo 5 -Prison Camp Rd. culvert outfall, no Photo G - Reach 2 upstream extend looking
treatment. downstream, reshape channel, seed and live stake
stream banks.
i
7?4? - 3
I I I
Photo 13 Reach 3 next to youth camp looking Photo 14 - Reach 3 next to youth camp looking
downstream, regrade stream banks, seed and live downstream, regrade stream bank, install rock vane,
stake, install bare root/ container plantings to seed and live stake. Install bare root/ container
prevent mowing where applicable. plantings along corridor to prevent mowing where
applicable.
?e
4. ? Y
Photo 15 - Reach 3 next to youth camp looking Photo 16 Reach 4 upstream extents looking
upstream, seed and live stake bare portion of stream downstream, reshape channel. Seed and live stake
bank, install bare root/ container plantings along stream banks. Install cross vane.
Photo 17 - Reach 4 middle portion looking Photo 18 - Reach 4 downstream extents, re
upstream, reshape channel. Seed and live stake channel. Seed and live stake stream banks.
stream banks. Install rock vane.
ROCK VANE
e
113
BOTTOM
WIDTH
TOP OF STREAP.IBANK
/ HEADER ROCK
CHANNEL O
Rte, FLOW FLOW 4%T 0% LOPE
...,
.....
.
w 260 STREAMBED i:;:-.Lt .. -
,
_
- _
j ELEVATION
TO 30
v
13ACKFILL
ON
SITE ALLUVIUM
J `
(
-
)
--
CLASS A STONE
CLASS 1 STONE
FOOTER ROCK
SCOUR POOL
(EXCAVATED)
PROFILE VIEW
SCOUR P(
NO GAPS ?- SCOUR POOL (EXCAVATED) PER
BETWEEN DIRECTION OF ENGINEER
BOULDERS
BOTTOM WIDTH
PLAN VIEW
NOTES FOR ALL VANE STRUCTURES
1. BOULDERS MUST BE AT LEAST WxTxZ.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE
HEADER ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM
FOOTER ROCK AND THEN UPSTREAM TO A MINIMUM OF TEN FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON
UPSTREAM SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK
4. START AT 13ANKAND PLACE FOOTER ROCKS FIRSTAND THEN HEADER (TOP) ROCK
5. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
6. AN EXTRA BOULDER CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT.
7. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS
A STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
8. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE
STRUCTURE WITH ON-SITE ALLUVIUM TO THE ELEVATION OF THE TOP OF
THE HEADER ROCK
9. START SLOPE AT 213 TO 1 TIMES THE BANKFULL STAGE
CLASS A STONE HEADER ROCK
BACKFILL (ON-SITEALLUVIUh??
FILTER FABRIC
? 1 FOOTER ROCK
1_y
10' MINIh1U CLASS 1 STONE
SECTION A - A
["J /"y+d n 8000 Regency Parkway Suite 200
LM)
IL T???n Cary, North Carolina 2751 27511
Phone: 919-483-5488
Fax: 919-4835490
ROCK VANE (Ti"I`'3)
ROCK CROSS VANE TYPE 1
FLOW
TYPE 1 CROSS VANE FOR GRAVELICOBBLE BED RIVERS
WITH DRAINAGE AREAS GREATER THAN 12mi'
113 TOP WIDTH -
FLOW
I C
B GRADE
POINT
Y ? rf
r
UHANNEL BED - CF
TOE OF BANK
WELL GRADED MIX
A
VANE
a ARM
SCOUR POOL
SILL
r _ sru
t r
i
B
B VANEANGLE [BOULDERS
I 20' TO 30' I I C
PLAN VIEW VANEARM LENGTH 2,0 FT
INVERT WIDTH ? FT
VANE ARM SLOPE 7 %
VANE ANGLE 2a o
NOTES FOR ALL VANE TR 1r•.n IRFS•
1. BOULDERS MUST BE AT LEAST 4• x 3• x Z.
2 INSTALL FILTER FABRIC FOR DRAINAGE BEGINNING AT THE MIDDLE OF THE HEADER
ROCKS AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER ROCK, AND
THEN UPSTREAM TO A MINIMUM OF SIX FEET.
3. DIG A TRENCH BELOW THE BED FOR FOOTER ROCKS AND PLACE FILL ON UPSTREAM
SIDE OF VANE ARM, BETWEEN THE ARM AND STREA1612ANIC
4. CONSTRUCT FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.
S. USE CLASS 1 STONE TO FILL GAPS ON UPSTREAM SIDE OF BOULDERS, AND CLASS A
STONE TO FILL GAPS ON UPSTREAM SIDE OF CLASS 1 STONE
e. AFTER ALL STONE HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE STRUCTURE
WITH ON-SITE ALLUVIUM TO THE ELEVATION OF ONE HALF THE HEADER ROCK
SECTION A - A
BANKFULL STAGE HEADER ROCK
STREAM BANK
FLOW ---? B
4% 70 77 VANE ARU SSE
STREAM BED
ELEVATION \Ce.
FOOTER ROCK
PROFILE VIEW B - B
VANE ARM
FILTER FABIC
CROSS VANE INVERT/GRADE POINT
PROFILE VIEW C - C
((] 8000 Regency Parkway Suite 1200
Cary, North Carolina 27 27511 ROCK
Phone: 919483-5488 \
Fax: 819-4835490 J`
CROSS VA ?! E TY P E 1 T-1M c- 3
PLANTING SPECIFICATIONS
NOTES:
1. PLANT BARE ROOT SHRUBS AND TREES TO THE WIDTH OF THE
BUFFER AS SHOWN ON THE PLANS.
2. ALLOW FOR 6-10 FEET BETWEEN PLANTINGS, DEPENDING ON SIZE.
3. LOOSEN COMPACTED SOIL
TOP OF STREAMBANK 4. PLANT IN HOLES MADE BY A MATTOCK DIBBLE, PLANTING BAR,
OR OTHER APPROVED MEANS.
5. PLANT IN HOLES DEEP AND WIDE ENOUGH TO ALLOW THE ROOTS
TO SPREAD OUT AND DOWN WITHOUT J-ROOTIING.
6. KEEP ROOTS MOIST MILE DISTRIBUTING OR WAITING TO PLANT
BY MEANS OF WET CANVAS, BURLAP, OR STRAW.
7. HEEL-IN PLANTS IN MOIST SOIL OR SAWDUST IF NOT PROMPTLY
PLANTED UPON ARRIVAL TO PROJECT SITE
NOTES.
1. WHEN PREPARING THE HOLE FOR A POTTED PLANT OR SHRUB
DIG THE HOLE 8 -12 INCHES LARGER THAN THE DIAMETER OF THE
POT AND THE SAME DEPTH AS THE POT.
2. REMOVE THE PLANT FROM THE POT. LAY THE PLANT ON ITS SIDE
IF NECESSARY TO REMOVE THE POT.
3. IF THE PLANT IS ROOTBOUNO (ROOTS GROWING IN A SPIRAL
AROUND THE ROOT BALL), MAKE VERTICAL CUTS WITH A KNIFE
OR SPADE JUST DEEP ENOUGH TO CUT THE NET OF ROOTS.
ALSO MAKE A CRISS-CROSS CUTACROSS THE BOTTOM OF THE BALL
4. PLACE THE PLANT IN THE HOLE.
TOP OF STREAMBANK 5. FILL HALF OF THE HOLE WITH SOIL (SAME SOIL REMOVED FOR BACKFILL).
6. WATER THE SOIL TO REMOVE AIR POCKETS AND FILL THE REST
OF THE HOLE WITH THE REMAINING SOIL
{ SCOO Regancy Parkway Suits 00
Ph na 819 483-5488 1
Fax. 819463-5480 BARE ROOT/ CONTAINER PLANTING
EROSION CONTROL MATTING
PLACE COIR FIBER MATTING IN 8 INCH DEEP
TRENCH. STAKE, BACKFILL, AND COMPACT
/---- TOP OF STREAMBANK
TOE OF SLOPE
TYPICAL MATTING STAKE
NOTES:
1. BANKS SHOULD BE SEEDED PRIOR TO
PLACEMENT OF MATTING.
2 PLACE COIR FIBER MATTING ACCORDING TO
MANUFACTURER RECOMMENDATIONS.
3. MATTING STAKES SHOULD BE PLACED
IN A DIAMOND SHAPED PATTERN.
THE WOOD STAKE SHALL BE THE NORTH AMERICAN
GREEN ECOSTAKE OR APPROVED EQUAL WITH THE
FOLLOWING DIMENSIONS:
LEG LENGTH 11.00 IN 27.94 CM
HEAD WIDTH 1.25IN 3.18 CM
HEAD THICKNESS 0.40 IN 1.02 CM
LEG WIDTH 0.80 IN 1.52 CM APERED TO POINT)
LEG THICKNESS 0.40 IN 1.02 CM
TOTAL LENGTH 12.00 IN 30.48 CM
DITCH
0 0 0 0 0 0 0 0 0 0 0 0
TOP OF 0 0 0 0 0 O 0 0 0 0 0 -
STR
STREAMBANK
_
_ _ _ __ _
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 d
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
PLAN VIEW
DITCH
TOP OF STREAMBANK
STAKES
COIR FIBER MATTING TO BE
EXTENDED TO TOE OF SLOPE
{?""I ? ,?^',,,.?7 ? 4 6COC Phone 9163-UBSt; 200
. ? ?,, l`L I N, G F? 919-463.6480 EROSION CONTROL MATTING
LIVE STAKING
CROSS SECTION VIEW
8'-8' SPACING
R?[JCJC7VVC1 r acaecwr.
TOP OF
STREAMBANK
TOE OF
SQUARE CUT TOP
BUDS FACING UPWARD
LIVE CUTTING
MIN. 12' DIA 7 - Y LENGTH
ANGLE CUT
30-45 DEGREES
LIVE STAKE DETAIL
PLAN VIEW
?j ^ 8000 Regency Parkway Suits 200
L?.7~.C?1 4, Cary. North Carolina 27611
Phone: 919483 5488
;V N ' E2 I N C ?? Faac 919483.5490
NOTES:
1. STAKES SHOULD BE CUT AND INSTALLED ON THE SAME DAY.
* DO NOT INSTALL STAKES THAT HAVE BEEN SPLIT.
3. STAKES MUST BE INSTALLED WITH BUDS POINTING UPWARDS.
4. STAKES SHOULD BE INSTALLED PERPENDICULAR TO BANK.
5. STAKES SHOULD BE 12 TO 2 INCHES IN DIAMETER AND 2 TO 3 FT LONG.
8. STAKES SHOULD BE INSTALLED LEAVING 115 OF STAKE ABOVE GROUND.
LIVE STAKING
:...a :a
TOP OF STREAMBANK
PLANT STAKES FROM TOP OF BANK
TO TOE OF BANK IN A DIAMOND SHAPED
STAGGERED PATTERN
PLAN VIEW
TEMPORARY SILT FENCE
NOTES:
1. USE FILTER FABRIC A MINIMUM OF 38' IN WIDTH AND
FASTEN ADEQUATELY TO THE WIRE AS DIRECTED
BY THE ENGINEER
Z PROVIDE S STEEL POST OF THE SELF-FASTENER
ANGLE STEEL TYPE
m n 8000 Regency Parkway Suite 200
Cary, North Corollna 27517
m (Z rz Phone: 919-483-5485
L: "ti C; i ;+s 7 f R2 1 Fax 919-483-5490
FILTER FABRIC -
COMPACTED FILL
k
STEEL POST- 2'-0'
4'
EXTENSION OF FABRIC
INTO TRENCH
SILT FENCE
i , - 8' MAXIMUM - , i
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GROUNDCOVER PLANTING DETAIL
TREE OR SHRUB PLANTING DETAIL
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STAKNG DETAIL
FOR TREES 6' TO 17 TALL
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RANDOM PLANT SPACING DETAIL-PLAN VIEW
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TREE & SHRUB PLANTING DETAILS
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PRUNING CUTS
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SHRUB BED PLANTING DETAIL
TREE GUYING DETAIL
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Erosion and Sediment Control Plan
Emergency Watershed Protection Program
Avery County
The following erosion and sediment control measures will be incorporated into all stream
repair sites.
1. The Contractor shall minimize vegetation disturbance by only working on the
stream bank and channel that is in need of repair. Existing buffers shall not be
disturbed unless directed by the designer.
2. The Contractor shall only enter the stream channel as shown on the plans or
directed by the designer. These stream accesses shall conform to the design
standards shown in the attached detail drawings. Timber mats may be used as a
substitute for rock per the approval of the designer.
3. The Contractor shall limit all bank and channel disturbance to activities that can
be completed by the end of each working day such that the work would remain in
place during an overnight storm event.
4. All equipment and uninstalled materials shall be removed from the channel at the
end of each working day and secured safely from potential out-of-bank flow
events that may occur prior to performing additional work.
Graded stream banks shall be stabilized with temporary and permanent seed and
coir fiber matting at the end of each working day. Seeding and coir fiber
matting specifications are included with this plan.
6. Stockpiles shall remain at least fifteen feet from flowing water and outside of the
top of bank. Silt fence shall be placed at the base of the stockpile between the
stockpile and the channel and must function to receive stockpile runoff before
entering the channel. Silt fence shall conform to design standards shown in the
detail drawings.
7. Temporary vegetation and permanent herbaceous vegetation shall be established
on all disturbed areas not already stabilized with matting, within five days after
construction is completed.
8. Permanent woody vegetations species are listed in the vegetation specifications;
planting details are also included.
Buck Engineering 1 of 8 River Works
Riparian Seed List
Scientific name
Agrostis alba
Caret vulpinoidea
Elymus virginicus
Juncus effisus
Panicum clandestinum
Polygonum pennsylvanicum
Bidens frondosa
Coreopsis lancolata
Cassia fascicidata
Verbesina alternifolia
Common Name % of Mix
Redtop 15%
Fox Sedge 10%
Virginia Wild Rye 20%
Soft Rush 5%
Deer Tongue 15%
Smartweed 5%
Beggers Ticks 5%
Lance leafed Coreopsis 15%
Partridge Pea 5%
Wingstem 5%
Seed at full rate of 15 lbs/acre along stream banks and in any stream buffer and wetland
areas.
Riparian Buffers
Trees and Shrubs
Trees and shrubs will be used to provide permanent vegetation for EWP repair sites.
Species used shall be selected from the following list:
Shrub and Small Trees
Scientific name Common name
Salix sericea Silky Willow
Xanthorhiza snnpllclsslma Yellowroot
Physocarpus opulifolius Ninebark
Cornus anionum Silky Dogwood
Hamamelis virginiana Witch-hazel
Carpinus caroliniana Ironwood
Corylits antericana Hazel-nut
Ahius serrulata Tag Alder
Ostrya virginiana Hornbeam
Spirea tomentosa Hardback
Rhododendron arborescens Smooth Azalea
Rhododendron maximum Rosebay Rhododendron
Cephalanthus occidentalis Button Bush
Itea virginica Virginia Sweetspire
Calycanthus,Jloridus Sweet Shrub
Leucothoe axillaris var. editorum Dog Hobble
Hydrangea arborescens Mountain Hydrangea
Sambucus canadensis Elderberry
Buck Engineering 3 of 8 River Works
Erosion Control Mattinf
Ecostakes
Provide wooden stake not less than 12 in. (300 mm) in length with a notch cut 1 in. (25
mm) from the top. These stakes shall be used to stake the matting along the slopes.
Wooden 3 ft. stakes spaced approximately 4 ft. apart shall be used to secure the matting
at the toe of slope. The toe stakes shall have a minimum 1-inch by 1-inch cross-section
and shall be designed so that the matting can not slide past the exposed end of the stake.
Refer to the attached details and specifications for EWP work for more information.
Coir Fiber Matting
The erosion control matting shall be a machine-produced mat of 100% coconut fiber with
the following properties:
Matrix 100% Coconut Fiber
Weight 20 oz/SY (678 gm/m2)
Tensile Strength 1348 x 626 lb/ft minimum (1650.5 x 766.5 kg/m)
Elongation 34% x 38%
Open Area (measured) 50%
Thickness 0.30 in minimum (7.6 mm)
Flexibility (mg --cm) 65030 x 29590
Recommended Flow 11 feet/second (3.35 m/s)
Size 6.6 x 164 ft (120 SY) or (100 SM)
"C" Factor 0.002
Place the coir fiber matting immediately upon final grading. Provide a smooth soil
surface free from stones, clods, or debris that will prevent the contact of the matting with
the soil. Apply seed prior to installing matting. Begin at the bottom of the slope by
anchoring the matting in a 6-inch (15 cm) deep by 6-inch (15 cm) wide trench. Backfill
and compact the trench after staking. Walking backward down the stream, allow the
matting to unroll slowly; ideally the matting roll will rest against your shin as you walk.
Stake the matting according to recommended stake pattern for specific product and slope.
(See stake pattern guide that comes with the product.) Place matting in full contact with
the soil.
The edges of the parallel matting must be staked with approximately 2 inches (5 cm) of
overlap such that the edge of the downstream matting is under the one just upstream.
When matting must be spliced down the slope, place matting end over end (shingle style)
with approximately 6 inches overlap. Drive stakes through the overlapped area.
Place stakes across the matting at ends, junctions and trenches approximately 1.3 ft apart.
Place stakes along the outer edges, down the center of each strip of matting and along all
lapped edges approximately 2 ft apart. Cut excess matting and anchor at the end of the
slope.
Buck Engineering 5 of 8 River Works
Construction Sequence of Events
Construction shall be performed at the EWP site in accordance with the plans and in
general accordance with the following sequence:
1. Mobilize equipment and materials to the site.
2. Set up construction access pads, staging areas, haul roads, and silt fences.
3. Install stream access ramps.
4. Excavate and grade banks and construct in-stream structures.
5. Seed and mat graded banks and immediately upon reaching final grades.
6. Stabilize all disturbed soil with temporary and permanent seed prior to leaving the
site each day and prior to moving to the next work area.
7. Dispose of excess materials at approved off-site locations.
8. Remove stream access ramps.
9. Remove silt fence and seed and mulch staging areas to restore these areas to pre-
project conditions.
10. Demobilize grading equipment from the site. Remove construction access pads.
11. Plant bank, floodplain and buffer woody vegetation and live stakes during the
dormant season.
Buck Engineering 7 of 8 River Works
6/28/05
Subject: Cultural Resources Literature Search and Survey Results for Avery County NRCS Planned
EWP Undertakings
To: Jane Shaw, NRCS District Conservationist
Date of Survey: 6/14 - 15/2005
From : Jim Errante
USDA-NRCS, CRS SC & NC
1835 Assembly St., Rm 950
Columbia SC 29201
Phone: (803)253-3937
The following list of DSR's were reviewed by Jim Errante, NRCS Cultural Resources Specialist (CRS). A
literature search for each planed practice location took place in the Archaeological Map room of the NC Office
of State Archaeology. Each location was reviewed for the potential of NRCS planned activities to effect
cultural resources (CR's). In addition, photographs of the APE's were reviewed and discussions were held
with knowledgeable field office and the engineering staff in order to determine the potential of planned
activities to effect CR's at each EWP practice location. Each practice location received a ranking of a low,
medium or high potential to effect CR's.
All EWP practice locations receiving a medium or high ranking to effect cultural resources were
archeologically surveyed by the NRCS CRS. Archaeological survey procedures included reconnaissance
survey of all visible soils in the area including river bank profiles, and shovel testing. All shovel tested soils
were screened through'/4 inch hardware mesh. The following Excel file list of EWP locations includes a
statement describing the results of this survey work. The NRCS CRS maintains the field work details of the
archaeological survey at each APE. Any questions concerning the results of these survey results as listed
below should contact the NRCS CRS for further explanation.
DSR #s CR Review Comments
BC 1 Elk Mills Low potential for impact to CR's FO to survey
BC 1 Elk Park Low potential for impact to CR's FO to survey
BC 2 Low potential for impact to CR's FO to survey
CB 1 Low potential for impact to CR's FO to survey
cc 1 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
CC 2 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
CC 3 No previous recorded CR's. Very low terrace over stream & disturbed soils in APE. Surveyed by
CRS. Ok to proceed.
DSR #s CR Review Comments
NT 3 Low potential for impact to CR's FO to survey - primarily debris removal.
NT 4 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 5 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 6 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 7 Low potential for impact to CR's FO to survey (previously surveyed - No CR's)
NT 8 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 9 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 10 No CR's previously recorded in area. Location will primarily involve debris removal. Low banks in
area and no evidence of CR's found. Surveyed by CRS. Ok to proceed.
NT 11 No previously recorded CR's in area. Impacts planned are adjacent to bridge and are disturbed and
heavily scoured. No CR's. Surveyed by CRS. Ok to proceed.
NT 12 No previously recorded CR's in area. No CR's. Surveyed by CRS. Ok to proceed.
NT 13 No previously recorded CR's in area. Survey focused on streambank stabilization areas. No CR's
discovered. Location will primarily involve debris removal. Surveyed by CRS. Ok to proceed.
NT 14 No previously recorded CR's in area. Survey focused on streambank stabilization areas. Significant
nursery agricultural impacts in area. No CR's discovered. Location will primarily involve debris
removal. Surveyed by CRS. Ok to proceed.
NT 15 No previously recorded CR's in area. Survey focused on streambank stabilization areas. Significant
nursery agricultural impacts in area. No CR's discovered. Location will primarily involve debris
removal. Surveyed by CRS. Ok to proceed.
NT 16 No CR's previously recorded in area. Location will primarily involve debris removal. No evidence of
CR's found. Surveyed by CRS. Ok to proceed.
NT 17 Low potential for impact to CR's FO to survey
NT 18 No previously recorded CR's in area. Very low terrace, and very scoured area. Area floods
frequently. No CR's. Surveyed by CRS. Ok to proceed.
NT 19 Low potential for impact to CR's FO to survey
PC 1 Low potential for impact to CR's FO to survey
PM1 Low potential for impact to CR's FO to survey
RB 1 Low potential for impact to CR's FO to survey
RC 1 No previously recorded CR's in area. Very disturbed soils in APE - re-routed stream & scoured area.
No CR's. Surveyed by CRS. OK to proceed.
SB 1 Newland Low potential for impact to CR's FO to survey
SB 1 V.Crucis Low potential for impact to CR's FO to survey
SC 1 Low potential for impact to CR's FO to survey
so 1 Low potential for impact to CR's FO to survey
TMC 1 Low potential for impact to CR's FO to survey
TMC 2 Low potential for impact to CR's FO to survey
TMC 3 Low potential for impact to CR's FO to survey
TMC 4 Low potential for impact to CR's FO to survey
TMC 5 Low potential for impact to CR's FO to survey
UNR 4 Low potential for impact to CR's FO to survey
UNT 1 Low potential for impact to CR's FO to survey
UNT 2 Low potential for impact to CR's FO to survey
UNT 3 Low potential for impact to CR's FO to survey
UNT 5 Low potential for impact to CR's FO to survey
UNT 6 Low potential for impact to CR's FO to survey
UNT 7 Low potential for impact to CR's FO to survey
UNT 8 Low potential for impact to CR's FO to survey
Federally Threatened and Endangered Species Review
Based upon a memo submitted by Brian Cole of the United States Fish and Wildlife
Service (USFWS), dated June 21, 2005, no listed species or their habitats occur on this
site. The USFWS concur with the determination that the activities proposed at this site
will not affect endangered or threatened species or their habitats.