20051922 Ver 1_Complete File_20051017

of W TF9
r_
o -c
Mr. Deror Geouque
Assistant County Manager
Watauga County
842 West King Street, Suite 1
Boone, NC, 28607
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
?r'
DEW. WATER ""efo"
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Mr. Qeouque:
Alan W. Klimek, P.E. Director
Division of Water Quality
October 26, 2005
DWQ# 05-1922
Watauga County
Watauga County has our approval to conduct stream channel and bank stabilization and restoration activities,
in accordance with the attached conditions, along a total of 105 linear feet of the Watauga River, located
between 262 The Pond Road and 272 the Pond Road in Foscoe, Watauga County, as described in your
application received by the Division of Water Quality on October 17, 2005. After reviewing your application,
we have determined that this activity is covered by General Water Quality Certification Number 3367, which
can be viewed on our web site at http://h2o.enr.state.nc.us/ncwetlands. This Certification allows you to use
Nationwide Permit Number 37 when it is issued by the U.S. Army Corps of Engineers. In addition, you
should secure any other applicable federal, state or local permits before you proceed with your project,
including '(but not limited to) those required by Sediment and Erosion Control, Non-Discharge, and Water
Supply Watershed regulations. Also, this approval will expire when the accompanying 404 permit expires
unless otherwise specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application for a
new certification. If the property is sold, the new owner must be given a copy of the Certification and
approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this
project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A
NCAC 2H.0506 (h). For this approval to be valid, you must follow the conditions listed in the attached
certification, as well as the additional conditions listed below:
1. The (following impacts are hereby approved as long as all other specific and general conditions of this
Certification are met. No other impacts, including incidental impacts, are approved:
Amount Approved
Plan Location or Reference
Streams 105 linear feet A reach of the Watauga River located
between 262 The Pond Road and 272 The
Pond Road in Foscoe, Watauga County

t Carolina
UMMY
North Carolina Division of Water Quality.
Wetlands Certification Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Phone [phone] FAX [phone]
2321 Crabtree Blvd. Raleigh, NC 27604-2260 Internet httpl/:h2o.enr.state.nc.us/ncwetands
Customer Service Number: 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer - 50% Recycledl10% Post Consumer Paper
Mr. Deron Geouque
Page 2, DWQ# 05-1922
October 26, 2005
2. Appropriate sediment and erosion control measures which equal or exceed those outlined in the most
recent version of the North Carolina Erosion and Sediment Control Planning and Design Manual or the
North Carolina Surface Mining Manual (available from the Division of Land Resources at NCDENR
regional offices or the central office), whichever is more appropriate, shall be designed, installed and
maintained properly to assure compliance with the appropriate turbidity water quality standard (50
NTUs in streams and rivers not designated as trout waters by DWQ; 25 NTUs in all saltwater classes
and all lakes and reservoirs; 10 NTUs in.DWQ Classified trout waters). Such measures must equal or
exceed the requirements specified in the most recent version of the North Carolina Sediment and
Erosion Control Manual. These measures must be maintained on all construction sites, borrow sites,
and waste pile (spoil) sites, including contractor owned and leased borrow pits, which are associated
with the project.
3. 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 measures in wetlands or 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.
4. 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.
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,
unless authorized under Division of Land Resources Erosion and Sediment Control approval. 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.
6. 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.
Mr. Dieron Geouque
Page 3, DWQ# 05-1922
' October 26, 2005
7. The channel must 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. Streambed materials are unstable in flowing-water situations and are unsuitable for
bank stabilization. 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.
8. Stabilization measures should only be applied on or near existing erosion sites, leaving other stable
stream bank areas in a natural condition. iGrading 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 streambed materials are available. Berms are not permitted because they block the
floodplain, constrict and accelerate flood flows, and often fail or impede drainage during large flood
events.
9. 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.
10. If mechanized equipment is utilized, it shall be operated from the bank whenever possible. All
mechanized equipment operated near surface waters shall be inspected and maintained regularly to
prevent contamination of stream waters from fuels, lubricants, hydraulic fluids or other toxic materials.
Any mechanized equipment used in the stream channel shall be clean and in proper working order.
11. As long-term stream stability is a concern with this type of work, it is strongly recommended that woody
vegetation be established along stream banks where possible. Any riparian vegetation planting should
be performed in accordance with the Guidelines for Riparian Buffer Restoration
(htt2//h2o. enr. state.nc.us/wrp/pdf/buffers.pdfj.
12. The permittee shall provide on-site supervision of stability work including, but not limited to bank re-
sloping, in-stream structure placement, and riparian zone re-establishment by an appropriately trained
individual.
13. The Permittee shall monitor the stabilization work done under this Certification on an annual basis for
three (3) years following the completion of the restoration efforts. This field evaluation should note the
condition and stability of the measures installed and the success of any riparian zone plantings. A
written report shall be provided to DWQ's Winston-Salem Regional Office by June 1St of each year.
The report must describe inspection results, include digital photographs, list the date of inspection, and
describe any needed repairs or corrections.
14. The permittee must provide a copy of this Water Quality Certification and attached authorization letter
to each property owner where the approved work will be performed.
Mr. Deron Geouque
Page 4, DWQ# 05-1922
October 26, 2005
15. The turbidity standard of 10 NTU (Nephelometric Turbidity Units) shall not be exceeded in streams
designated as trout waters, as described in 15 A NCAC 2B .0211(k). For streams not designated as trout
waters, the turbidity standard of 50 NTU (Nephelometric Turbidity Units) shall not be exceeded, as
described in 15 A NCAC 2B .0211(k). Appropriate sediment and erosion control practices shall be used
to ensure compliance with this standard.
16. Upon finishing the project, the Applicant shall fill out and return the enclosed "Certificate of
Completion" to notify NCDWQ when all work included in the §401 Certification has been completed.
This certificate should be returned to the 401/Wetlands Unit of the NC Division of Water Quality at the
address listed on the form. Along with the Certificate of Completion, please send photographs showing
all restored stream reaches.
If you do not accept any of the conditions of this certification, 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 Daryl Lamb in the DWQ Winston-Salem Regional Office at 336-
771-4600 or Ian McMillan in the Wetlands/401 Central Office in Raleigh at 919-715-4631.
Sincerely,
A Alan W. Klimek, P.E.
AWK/cdl
Attachments
cc: Steve Chapin, U. S. Army Corps of Engineers, Asheville Regulatory Field Office
Winston-Salem DWQ Regional Office
Central Files
Wetlands/401 File Copy
Mr. Mark D. Cathey, McGill Associates, P. A., P. O. Box 2259, Asheville, NC 28802
Triage heck List
Date: 10/19/05 Project Name: Watauga County EMT
The Ponds SD Watauga River
FILE C 0 P DWQ#: 05-1922
County: Watauga
Daryl Lamb, Winston-Salem Regional Office
To:
¢0-day processing time: 10/17/05 -12/15/05
From: Cyndi Karoly Telephone: [phone]
The file attached is being forwarded to you for your evaluation.
Please call if you need assistance.
[] Stream length impacted
E:i Stream determination
Wetland determination and distance to blue-line surface waters on USFW topo maps
Minimization/avoidance issues
[] Buffer Rules (Meuse, Tar-Pamlico, Catawba, Randleman)
Pond fill
Mitigation Ratios
0 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
Q
M
Q
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!

@McGidl
A S S O C I A T E S
October 14, 2005
Mr. David Baker,
Asheville Regulatory Field Office Chief
Asheville Regulatory Field Office
US Army Corps of Engineers
151 Patton Avenue
Room 208
Asheville, NC 28801-5006
Ms. Cyndi Karoly, Supervisor
401 Oversight and Express Permits Unit;
1650 Mail Service Center
Mail Service Center
Raleigh, NC 27699-1650
20051922

Fl@[ROW19
o C T 1 7 2005
DENR - WATER QUALITY
WETLANDS AND STORMWATER BRANCH
Re: 404/401 Permit Application for the
Emergency Watershed Protection
(EWP) Project -
Lower Watauga Site The Ponds
Subdivision
Watauga County, North Carolina
Dear Mr. Baker and Ms. Karoly:
Attached please find the 404/401 permit application for the Emergency Watershed
Protection (EWP) Project - Lower Watauga Site The Ponds Subdivision in Watauga County.
The information included with this application has been developed in conjunction with the
Natural Resources Conservation Service and the Watauga County Soil and Water Conservation
District. The Lower Watauga Site The Ponds Subdivision is a critical EWP site and is located on
the Watauga River. We have carefully developed this application and have considered all
potential impacts of this work. It is important that the construction for this urgent stream repair
work be conducted as soon as possible. We look forward to quick regulatory action and
approval of this repair plan so this important work can be accomplished.
With the hurricane season for the east coast of the United States upon us again, Watauga
County, and all those areas affected by the devastating hurricanes and tropical storms from 2004,
are reminded that getting the damaged stream areas repaired is an essential objective in trying to
minimize future environmental and property damage impacts from this still damaged site.
'Engineering • Planning • Finance
McGill Associates, P.A. • P.O. Box 2259, Asheville, NC 28802 • 55 Broad Street, Asheville, NC 28801
828-252-0575 • FAX [phone]
e ?
i
Mr. David Baker and
Ms. Cyndi Karoly
October 14, 2005
Page 2 of 2
We have made every effort to effectively address each and every concern related to this
repair work and the need to protect this area's water resources. Frankly, we believe that the
ongoing water quality impact of this damaged and exposed stream bank area represents a great
threat to downstream waters and to the wildlife habitat, not to mention the hazard it represents to
property near the site. We believe that the repair plan developed for this site is comprehensive
and represents well thought-through consideration of the existing water quality problems and
will result in effective management of any "short term" impacts during the construction phase.
We are looking forward to being able to proceed with this work as soon as possible.
Please let myself or Jennifer Ballard, of our office, know of any issues or consideration that
needs to be addressed to secure approval for this planned work. In accordance with the contact
we've made with North Carolina Department of Environment and Natural Resource's regional
401 contact, Mr. Daryl Lamb, we have submitted directly to him his copy of this repair plan and
application. We have also submitted a copy of the repair plan directly to Mr. Ron Linville with
the North Carolina Wildlife Resource Commission and Ms. Denise Moldenhauer of the United
States Fish and Wildlife Service. Also, since North Carolina has "waived" fees for these EWP
401s, we have not included any permit fees. Thank you for your attention to these applications.
Sincerely,
MCGILL ASSOCIATES, P.A.
''40d A ' eloo+
MARK D. CATHEY, P.E.
Enclosure
cc: Mr. Daryl Lamb, DENR w/enclosures
Mr. Deron Geouque, Watauga County w/enclosures
Ms. Denise Moldenhauer, USFW
Mr. Ron Linville, NCWRC
Mr. Derek Goddard, NRCS w/enclosures
Forrest Westall
05308/letters/LW Corp Permit Cover letter.doc
001 [THS ON xxi?sl ZV:90 IM 900Z/90/80

WATAUGA COUNTY CoTxy°NAGEn
Courthouse, Suite 1- 842 iVest King Street - Boone, NC 28607 - [phone]
TDD 1-800-735-2962 - Voice 1-800-735-8262 -FAX [phone]
'August 5, 2005
To Whom It May Concern,
Please accept this letter of authorization for'McGill and Associates Inc. to represent Watauga
County in all permitting related documents for the EWP site known as UW 1.
Thank You.
Sincerely,
Z_J_? _"? Deron Geouque "
Assistant County Manager
Z-d LSOE-t,92 (SZS) j13 e2nejeM - 4x3 d000 ON eLS=80 SO SO 2nd

Office Use Only: Form Version October 2001
USACE Action ID No. DWQ No. 2 0 Q 5 1 9 22
If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than
leaving the space blank.
1. Processing p E 99 00
1. Check all of the approval(s) requested for this project: O C T 1 7 2005
® Section 404 Permit
? Section 10 Permit DENR - WATER QUALITY
® 401 Water Quality Certification WETLANDS AND STORMWATER BRANCH
? Riparian or Watershed Buffer Rules
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 (see section VIII - Mitigation), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Watauga County Deron Geouque, Asst. County Manager
Mailing Address:
842 West King Street, Suite 1
Boone, North Carolina 28607
Telephone Number: 828-265-8000 Fax Number: 828-264-3230
E-mail Address: deron.geougueamcmail.net
2. Agent 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: Mark Cathev
Company Affiliation: McGill Associates
Mailing Address: P. O. Box 2259
Asheville, NC 28802
Telephone Number: 828-252-0575 Fax Number: 828-252-2518
E-mail Address: markc(a,mcgillengineers.com
Page 5 of 12
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 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: Watauga County Emergency Watershed Protection Program
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Lower Watauga Site The Ponds Subdivision
(See attached sheet for PINS)
4. Location
County: Watauga Nearest Town: Banner Elk
Subdivision name (include phase/lot number):
Directions to site (include road numbers, landmarks, etc.): This site is located off The Pond
Road between the residences of Ms. Cynthia Weathers (262 The Pond Road) and Mr.
Frank and Mrs. Eva Szollosy (272 The Pond Road).
5. Site coordinates, if available (UTM or Lat/Long):
(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. Describe the existing land use or condition of the site at the time of this application:
Land use is residential.
7. Property size (acres): See attached sheet for acreages
8. Nearest body of water (stream/river/sound/ocean/lake): Watauga River
9. River Basin: Watauga
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at httn://h2o.enr.state.nc.us/admin/mVs/.)
Page 6 of 12

10. Describe the purpose of the proposed work: Stream bank repair and stabilization.
When possible excavation equipment (excavator) will access deposition areas from the
stream bank and not encroach into the stream channel. The work described in this
Stream Repair and Bank Stabilization Plan (Repair Plan) is urgent and compelling
work under the National Resource Conservation Service (NRCS) Emergency
Watershed Protection (EWP) program to protect existing property and structures.
11. List the type of equipment to be used to construct the project: Excavators, dozers and
dump trucks.
12. Describe the land use in the vicinity of this project: Residential.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application:
None anticipated
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
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 7 of 12

1. Wetland Impacts
Wetland Impact
Site Number
(indi ate 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***
n/a

List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, 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.)
List the total acreage (estimated) of existing wetlands on the property: n/a
Total area of wetland impact proposed: n/a
2. Stream Impacts, including all intermittent and perennial streams
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?
lease specify)
I Fill and
excavation 105' Watauga River 30' Perennial

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 intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
wwNv.mapguest.com, etc.).
Page 8 of 12

Cumulative impacts (linear distance in feet) to all streams on site: 105 if
3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any
other Water of the U.S.
Open Water Impact
Site Number
indi ate 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.
4. 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.
bank on the
storm conditions and stabilizing the stream banks will provide the appropriate protection
aazainst future high water storm events. Access for this repair work is off The Ponds Road.
When at all possible, equipment will be kept out of the stream channel and stream
crossings will be minimized. Temporary and permanent herbaceous vegetation shall be
planted on all bare soils within 15 days of ground disturbing activities.
Page 9 of 12
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or 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
httv://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) with the NCWRP's written agreement. Check the box indicating that
you would like to pay into the NCWRP. Please note that payment into the NCWRP must be
reviewed and approved before it can be used to satisfy mitigation requirements. Applicants
will be notified early in the review process by the 401/Wetlands Unit if payment into the
NCWRP is available as an option. For additional information regarding the application
process for the NCWRP, check the NCWRP website at htti):Uh2o.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:
Page 10 of 12
i. ...?. ? ,... ... .: ..:sue ....:.. .? s-?-> ..f,. ... ..-?.-_ ...:..-.+ _ .._.... ? -
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
IX. Environmental Documentation (DWQ Only)
Does the project involve an expenditure of public funds or the use of public (federal/state/local)
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 [phone] 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 (DWQ Only)
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
(Neuse), 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* (s ? act feet) Multiplier Required
1 3
2 1.5
Total
Page 11 of 12
* 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.
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 (DWQ Only)
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.
n/a
XIL Sewage Disposal (DWQ Only)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
n/a
XIII. Violations (DWQ Only)
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).
Due to Federal regulations regarding the use of EWP, funding construction of all EWP
work must be completed by December 15, 2005.
'I o%y/r) S
Applicant/Agent's Signature D to
(Agent's signature is valid only i an authorization letter from the applicant is provided.)
Page 12 of 12
Property Owners for the Upper Watauga Site The Ponds Subdivision(Starting Upstream)
Pro a Owner Pin # Acreage Owner Address
Cynthia Weathers 1888066567 0.13 262-B The Ponds Road, Banner Elk, NC 28604
Eva & Frank Szollos 1888067518 0.12 115 N Spring Trail, Altamonte SP, FL 32714
Ann Imler 1888068639 0.164 25188 Marion Ave, Apt. F-208, Punta Gorad, FL 33950
STREAM REPAIRS & BANK STABILIZATION PLAN FOR
Lower Watauga Site
The Ponds Subdivision
Watauga County, North Carolina

1
1 ?1 f
'T F ryR Y- J
L? _ plf . l ^ '`

r? eli1 ?
5
?``
f'
??+
"
y?f3 ?
`'k f?. ,4

? as ?
?
?
?.. t yy
'?
IN
,•
` ?t
n r '?
?. *, -
l',• ?`9.'
??- pxr
'a? i
????""iii...??? FY??? ?r,y. t
1? Tf?? 1

?
i
!
.16
V? W7
? i

00-
1L"
r
;
G _

a®0?944589?818/p0
CA Prepared for
SEAL WATAUGA COUNTY
24993
q October 2005
N//JJ Q
?i ?/f^A .Ji:•'.: -,PVC" ,
Prepared by:
In conjunction with:
McGill Soil & Environmental Consultants, PA
ASSOCIATES !3

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
' 1. PROJECT PURPOSE & DESCRIPTION
The purpose of this project is to stabilize and/or repair eroded and unstable stream banks
' along the Watauga River that were impacted by flood flows from Hurricanes Frances and
Ivan in September of 2004. The severely eroded stream banks consist of exposed soil on
moderate to steep slopes, which, if transported during another high flow event, could
' block downstream culverts and bridges as well as cause increased erosion and
sedimentation in vulnerable High Quality waters. As desired by the landowners and
charged to us by Watauga County, NC, the proposed design is intended to reconstruct the
damaged bank as "close as possible" to the original pre-disturbance conditions. The
continued sedimentation occurring from this damaged site is an ongoing impact to the
downstream waters and its careful, quick repair is critical to protecting stream resources.
The work described in this Stream Repairs and Bank Stabilization Plan (Repair Plan) is
urgent and compelling work under the National Resource Conservation Service (MRCS)
' Emergency Watershed Protection (EWP) program to protect existing property and
structures. NRCS is the funding agency and Watauga County / Watauga Soil and Water
Conservation District (SWCD) is the sponsor and responsible party for the project. ?JVork
' on the site consists of repair and stabilization efforts only, and is not considered natural
channel restoration or enhancement work. However, some methods and approaches
utilized in the proposed repair are routinely applied in natural channel design efforts due
to their ability to protect channel banks from shear stresses and the resultant erosion.
' All work in or near surface waters will be supervised by trained personnel from both
McGill Associates and Soil & Environmental Consultants (S&EC). This site is one of
two damaged sites selected for repair within Watauga County.
2. SITE DESCRIPTION

0
n

Lower Watauga Site The Ponds Subdivision - Watauga River (B, Tr, HOW Waters) -
The repair site is approximately 105 feet in length and is located along the Watauga River
in Watauga County, NC. This area is located off The Pond Road between the residences
of Ms. Cynthia Weathers (262 The Pond Road) and Mr. Frank and Mrs. Eva Szollosy
(272 The Pond Road). Please refer to repair plans for photographs, mapping, imagery,
and details of existing site conditions.
Approximately 105 feet of the left channel bank (left and right are referenced while
looking downstream) was severely damaged through bank erosion and soil loss. The
repair is located on property owned by Ms. Cynthia Weathers and Mr. Frank and Mrs.
Eva Szollosy.
The stream bank along the repair reach is near vertical in some locations. A significant
portion of the material required to repair the area is available via deposits on site, but a
significant portion of the required borrow material will have to be hauled to the site.
2
II
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Access to the site is not an issue since it is located off The Pond Road. The material
drop-off access point is between Ms. Cynthia Weathers and Mr. Frank and Mrs. Eva
Szollosy's residences. The in-stream access point will be from the end of The Pond
Road, next to the residence of Ms. Ann haler. Utilities must be located and marked by
contractor prior to construction. The disturbed area for the proposed repair and
stabilization is 0.05 acres, and is exempt from an Erosion Control Permit from Land
' Quality. The Lower Watauga The Ponds Subdivision site work described in this plan
will need to be permitted by the U.S. Army Corps of Engineers (Section 404 permit) and
the NC Department of Environment and Natural Resources, Division of Water Quality
' (Section 401 Water Quality Certification).
3. TECHNICAL REPAIR DESCRIPTION
4j In October 2005, members of our design team visited the repair site to gain an
understanding of current site conditions and perform a general site characterization.
i While on site, we observed characteristics of the site and surrounding area, verified
surface and channel flow conditions, and observed existing property boundaries, select
futilities, site accessibility, and existing water conveyance structures. During this process,
we observed the exposed eroded bank along the repair reach (which was caused by the
hurricanes) to typify the failed bank slope, materials, vegetation, and general site
conditions.
While on site, we also observed existing channel banks immediately upstream and
downstream of the repair area as well as the existing channel bank on the opposite side of
the watercourse. We collected select site data,to locate the extent of the damage and
characterize the existing conditions along the repair reach. We photographed the project
site and prepared field notes for use in the preparation of our design.
Using the data collected during our field visit, we developed a rough site sketch defining
existing conditions with annotated hand notes, descriptions, and repair recommendations.
"
for the
"These notes were later refined for use in the development of our repair "concept
site roughly defining the location, size, and type of modifications and features proposed
for construction at the site.
Using the above data, we developed the Proposed Repair Plan including a plan view,
' typical repaired bank cross-sections, construction details for typical site features,
technical construction specifications, and planting recommendations for the
recommended repair.
'
4. DESIGN CONSIDERATIONS
A range of possible repair alternatives for the Lower Watauga Site The Ponds
Subdivision were considered. These repair alternatives included: 1) Repair-in-Place

Lower Watauga The Ponds Subdivision -
L
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Only, 2) Repair-in-Place augmented with In-Stream Structures, 3) Stream Restoration -
"Natural Channel Design."
As our understanding of this site has increased, and in an effort to streamline the
' approach to repairs, we further developed these repair alternatives. In our design
development, we strived to utilize techniques which would be simple and understandable
to a "typical" general contractor (reducing the need for specialty contractors) and which
could be easily modified or refined in the field by the designer (or contractor) based on
site conditions encountered during construction. It was also our intent that repair and
stabilization methods would be constructed with commonly used and readily available
' construction materials.
The recommended repair has been designed with robust methods to withstand typical
' channel discharges and erosive channel forces. One commonly observed approach to
such bank repairs includes a complete lining of repaired banks with large boulders or
riprap. It is our opinion that such an approach would be undesirable for three main
i
n
reasons. 1.) These repairs do not take into account the primary reason for the damage
the first place, that of excessive shear stresses on the bank and tend to serve as a "band-
k
i,
roc
aid" approach to bank repairs. 2.) Such repairs utilize excessive volumes o
resulting in considerably high repair costs. 3.) The placement of large volumes of rock
for continuous lengths in effect "armors" the banks and fails to provide the desired
(reconstructed) habitat that previously occurred naturally within the system (boulder,
f
' cobble, gravel substrate materials) bed and banks. Such habitat is key to a variety o
aquatic species.
' Our selected repair alternative for the site includes repairing the failed bank back to its
pre-disturbance location (through fill placement) and augmenting the repair with toe
stabilization. The proposed repair plan calls for the utilization of off-site borrow
' materials (where necessary), including riverbed borrow consisting of sand, gravel,
cobble, and small boulders, for the reconstruction of the lower bank zone. Elevations
above the lower bank zone will be constructed utilizing varying fill materials including
both riverbed borrow and other suitable borrow sources.
' Based on the observed (and measured) condition of the failed bank and the amount of
disturbance that has occurred, the bank repair alone (without supplemental toe
stabilization) would likely be insufficient to withstand future flood flows. The
installation of toe stabilization is necessary along the reach in areas of excessive scour to
tie-in to existing stabile banks.
This approach to bank repairs will improve the overall potential for the success of the
repair. The installation of toe stabilization will protect the channel bank with a
significantly smaller rock volume (when compared to bank lining) thereby reducing
overall repair costs. One additional benefit to this type of repair is the replacement of a
natural (less structural) repair that is more appropriate for the reach and generally more
aesthetically desirable.

I

n
u

J

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan
Watauga County
5. PROPOSED REPAIR PLAN
October 2005
McGill Associates, P.A.
During our evaluation of the site, infrared imagery (2004) was used to estimate the pre-
disturbance location of the "channel bank." This location was then used to develop a
repaired bank location as shown in our Repair Plan. A typical cross-section for the repair
was then developed to depict proposed repair characteristics including but not limited to
slope and slope break, stabilization methods, and planting recommendations.
NOTES.
1. Our repair plan is designed to repair and stabilize the bank along the subject
reach and is not considered natural channel restoration or enhancement work. In
addition, while consideration was given to select characteristics of the channel, it
should be recognized that a complete morphological evaluation of the repair
reach was not performed nor does this report (or repair) represent such an
evaluation. However, some methods and approaches utilized in the proposed
repair are routinely applied in natural channel design efforts due to their ability
to protect channel banks from shear stresses and the resultant erosion.
2. It should be noted that this "channel bank" location and the resultant "channel
width" is not to be considered the bankfull channel edge or bankfull width (as is
routinely described in Natural Channel Design Methodology), nor should it be
considered the "edge of water ", as this location will differ for various reasons. It
is however, a rough interpretation (estimate) of the pre-existing channel bank
location based on the best available, pre-damage site and mapping data,
discussions with landowners, observation of undisturbed channel segments
immediately upstream and/or downstream of the site, and experience on similar
projects.
3. Due to previous alterations of the channel, channel banks, widths, and slopes
have been modified considerably. In turn, the identification of the "natural"
condition (dimension, pattern, and profile) of the channel is often difficult or
indeterminate.
As shown on the attached repair plan and design details, we recommend that the repaired
slope be reconstructed and backfilled with excavated channel material (or deposited
material recovered from the floodplain), available on-site or off site earth fill, and in
some cases imported stone aggregate. The location of the toe of the repaired slope will
be field determined to allow for the development of a typical repair application along the
reach. Our Repair Plan calls for the incorporation of a single repair option. See the
proposed repair cross-section depicted in the Repair Plan.
5
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Bank Repair
For the bank repair, our design has divided the repaired bank into three bank
zones, Upper, Mid-, and Lower for the purposes of slope, stabilization measures,
and planting recommendations. The Lower Bank Zone will tie into the Mid-Bank
Zone as depicted on the Repair Plan.
Grading & Stabilization
We recommend that the Lower Bank Zone be graded (or constructed) with the
previously described materials at a slope not in excess of 1H:1.5V to the
approximate elevations described in the repair cross-section. As this zone is
within the "active channel", we recommend that it have toe stabilization and
backfilled with coarse (bed) material. This zone should be over seeded with the
appropriate temporary and permanent grasses for the season above the toe
stabilization.
The Mid-Bank Zone should be similarly graded (or constructed) with the
previously described materials at a slope not in excess of 1H:1.5V td the
approximate elevations described in the repair cross-section. As this zone is out
of the "active channel" we recommend that it be lined with excelsior (wood fiber)
erosion control matting (or equivalent), planted with select shrubs (bare root or
containerized specimen) of the species and density described in the planting
details. This zone should also be similarly over seeded with erosion control
grasses.
NOTES.
1. The repair cross-section shown is used to describe the typical repair
cross-section.
2. The existing top of bank and the vertical and horizontal distances depicted
in the repair cross-section are typical, however, there will be some
variation and should therefore be verified and adjusted as necessary along
the length of the repair reach.
The Upper Bank Zone should be graded (or constructed) with the previously
described materials such that it blends the Mid-Bank Zone with the surrounding
floodplain grade to the approximate elevations described in the repair cross-
section. As this zone is out of the "active channel", we recommend that it be
lined with excelsior (wood fiber) erosion control matting (or equivalent), and
planted with select shrubs (bare root or containerized specimen) of the species and
density described in the planting details. This zone should also be similarly over
seeded with erosion control grasses.

L

fl
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Toe Stabilization Measures
Toe stabilization will be constructed using rows of large boulders along the newly
defined toe of the repaired bank. Footer rocks (boulders) and toe rocks (boulders)
will be installed as shown in the details. The landward side of the toe stabilization
will be lined with a non-woven geotextile fabric and backfilled with suitable
material (off-site river bed borrow materials or other available coarse aggregate if
approved by the designer). This material combination will improve stability and
reduce the potential for future scour and piping (and resulting failure).
The designer will determine the exact location and extent of toe stabilization
measures at the time of construction. However, areas typically in need of such
supplemental protection include areas of existing scour (where sub-grade
reconstruction would be difficult), near existing large diameter trees (having
experienced undercutting) which are to be maintained, and at the upstream and
downstream repair limits (where tie-in to undisturbed banks is needed). For
plying purposes, we have estimated that 95 linear feet of the repaired bank will
require toe stabilization measures. A detail of a typical toe stabilization structure
is shown in the Construction Drawings.

Bpnk Plantings
L!

?J

7I
L

i
u

A riparian buffer area will be established along the repaired channel bank as part
of the proposed Repair Plan. The riparian zone will include all three Bank Zones
(Lower, Mid-, and Upper). These areas will be seeded and planted with the
appropriate native riparian vegetation and will provide channel stability and
treatment of surface waters traveling laterally through the buffer.
Species will consist primarily of native shrubs. The repaired bank will be planted
with the appropriate channel bank species in the form of bare-root seedlings (and
containerized plants), and transplants where available. Native shrubs that are
available elsewhere on-site will be removed with as much of the root ball intact
and transplanted adjacent to the restored channel or in the floodplain. The
majority of the planting efforts (with the exception of site transplants) should be
performed in the fall season to increase survivability. Vegetation will be supplied
by locally identified plant sources or purchased from local, reputable nurseries.
Other sources, outside of the local area, may be used depending on the availability
of plant material and as approved by the designer.
Shrub species will be planted at a spacing of 6 ft. by 6 ft. to achieve a desired
planting density of approximately 1,200 shrubs per acre, in order to improve
potential for the desired 5-year survivability. The planting plan will include a
minimum of three of the seven shrubs listed in the planting schedule.
7

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
' Watauga County McGill Associates, P.A.
A representative of S&EC will be on site to observe and direct planting efforts
associated with the buffer restoration. The designer must approve substitution of
shrub species in advance.
Temporary and/or permanent seeding measures (German millet, rye grass, or the
most appropriate erosion control grass as dictated by the season or region) will be
applied to areas disturbed during grading operations to allow for localized
stabilization while riparian species establish themselves.
Construction Drawings for the proposed Stream Repairs and Bank Stabilization Plan
' including the proposed repairs, repair cross-section, structure details, erosion and
sediment control details, and a planting schedule and details are attached. Technical
Specifications are also attached.
6. REGULATORY REQUIREMENTS
401 WATER QUALITY CERTIFICATION (Mandatory Requirement based on exuected
Certification conditions) - The following mandatory conditions apply to all repair sites:
' 1. Erosion & Sediment Control Practices
- 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.
2. 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
1 8
Watauga The Ponds Subdivision -
' Lower
,
Stream Repairs & Bank Stabilization Plan October 2 P.A.
' McGill Associates, A.
atauga County
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.
' 3. 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.
4. 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.
5. 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, unless authorized under Division of Land Resources Erosion
and Sediment Control approval. 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.
6. 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.
' 7. The channel must 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. Streambed materials are unstable
in flowing-water situations and are unsuitable for bank stabilization. Stream
dredging has catastrophic effects on aquatic life and disturbance of the natural

' Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
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.

' 8. 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 streambed materials are available.
Berms are not permitted because they block the floodplain, constrict and
accelerate flood flows, and often fail or impede drainage during large flood
events.
'

' 9. 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.

' 10. 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.

' 11. As long-term stream stability is a concern with this type of work, it is strongly
recommended that woody vegetation be established along stream banks where
possible. Any riparian vegetation planting should be performed in accordance
with the Guidelines for Riparian Buffer Restoration.
' 1-M:nn/-o.enr.s-Late.nc.usiwW/Rujjouiiuub.pui
12. Monitoring - The Permittee shall examine the stabilization work done under
this Certification on an annual basis for three (3) years following the
' completion of the restoration efforts. This field evaluation should note the
condition and stability of the measures installed and how well the repair is
holding up. A written report must be provided to DWQ's Asheville Regional
' Office by June 1St of each year. The report must describe inspection results,
include digital photographs, list the date of inspection, and describe any
' needed repairs or corrections.
13. The Permittee will provide on-site supervision of stability work including, but
not limited to bank re-sloping, in-stream structure placement, and riparian
zone re-establishment by an appropriately trained individual.
14. If pasture along the stream is to be used for grazing, the Permittee must
' inform the appropriate landowners that cattle should be prohibited from
damaging riparian areas and from de-stabilizing the stream banks and channel.
10
i
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
' Watauga County McGill Associates, P.A.
15. Diffuse Flow - All constructed storm water 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.
f 16. Water Quality Certification Notifications - The Permittee must provide a copy
of this issued Water Quality Certification and attached cover letter to each
property owner where the approved work will be performed.
' 17. Turbidity Standard - The turbidity standard (Nephelometric Turbidity Units)
shall not be exceeded as described in 15A NCAC 2B .0200. Appropriate
' sediment and erosion control practices must be used to meet this standard.
Finally, pending receipt of a final 404 Permit and 401 Certification, copies of these issued
documents and the associated conditions and comments provided by commenting
' ,agencies (when available) will be included in all final contractor packages that will be
used for construction of the repairs. All regulatory requirements and the measures
' outlined in this document will be fully discussed with the chosen contractor and the
inspectors for McGill Associates and S&EC before any construction begins. During
actual construction, inspectors will direct contractors to observe and apply good
' construction practices and the requirements described in this document.

11
` ? ?
'
?. i
?
}
? ?
i
' ? ?

?' j

??

?

{ r
i
t
! '
??
.
;.

i
i ',
i
1
a
3
i
f
i
?{'
i I
I
1
TECHNICAL SPECIFICATIONS
FOR
WATAUGA COUNTY EWP
LOWER WATAUGA SITE
THE PONDS SUBDIVISION
STREAM REPAIRS & BANK
STABILIZATION PROJECTS
I
9249 10) (
D. C
mlis°OCTOBER, 2005
Prepared for:
Watauga County, NC

I?
TECHNICAL SPECIFICATIONS TABLE OF CONTENTS
TITLE PAGE
TABLE OF CONTENTS
SECTION 11- GENERAL REQUIREMENTS
1.1 SECTION INCLUDES 1
1.2 SUMMARY OF WORK 1
1.3 WORKFORCE EXPERIENCE 1
1.4 SPECIFIC EQUIPMENT REQUIREMENTS 1
1.5 MEASUREMENT AND PAYMENT 1
SECTION TEMPORARY FACILITIES 1
2.1 SECTION INCLUDES 1
2.2 MEASUREMENT AND PAYMENT 1
2.3 TEMPORARY SANITARY FACILITIES 1
2.4 BARRIERS 1
2.5 TRAFFIC CONTROL 1
2.6 STAGING AREA 1
2.7 COORDINATION WITH OWNER AND OTHER
CONTRACTORS 2
2.8 PROTECTION OF EXISTING FACILITIES,
STRUCTURES, AND SERVICES 2
2.9 PROTECTION OF INSTALLED WORK 2
2.10 PROGRESS CLEANING & WASTE REMOVAL 2
2.11 EROSION CONTROL 2
2.12 FINAL CLEANING 2
SECTION 3 - QUALITY CONTROL 3
3.1 SECTION INCLUDES 3
3.2 MEASUREMENT AND PAYMENT 3
3.3 REFERENCES 3
3.4 CONSTRUCTION OBSERVATION 3
3.5 PLANTING OBSERVATION 3
SECTION 4 - SITE PREPARATION 4
4.1 SECTION INCLUDES 4
4.2 MEASUREMENT AND PAYMENT 4
4.3 UTILITY LOCATION AND PROTECTION 4
4.4 SEDIMENTATION AND EROSION CONTROL 4
4.5 CONSTRUCTION LAYOUT 4
4.6 CLEARING, GRUBBING, AND STRIPPING 4
4.7 DEWATERING 4
SECTION 5 - EXCAVATION 5
5.1 SECTION INCLUDES 5
5.2 MEASUREMENT AND PAYMENT 5
5.3 REFERENCES 5
5.4 PREPARATION 5
5.5 EXCAVATING 5
5.6 PLANTING PREPARATION 5
5.7 TOLERANCES 5
SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6
6.1 SECTION INCLUDES 6
6.2 MEASUREMENT AND PAYMENT 6
6.3 REFERENCES 6
6.4 FILL MATERIALS
6.5 PREPARATION
6.6 BACKFILLING, FILLING, AND SURFACE
PREPARATION
6.7 COMPACTION AND QUALITY CONTROL
6.8 PROTECTION OF FINISHED WORK
6.9 TOLERANCES
SECTION 7 - CHANNEL PROTECTIVE LININGS AND TOE
STABILIZATION
7.1 SECTION INCLUDES
7.2 MEASUREMENT AND PAYMENT
7.3 REFERENCES
7.4 GENERAL
7.5 MATERIALS
7.6 TOE STABILIZATION
7.7 CHANNEL PROTECTIVE LININGS
7.8 SLOPE PROTECTION
SECTION 8 - STREAM BANK PLANTING
8.1 SECTION INCLUDES
8.2 MEASUREMENT AND PAYMENT
8.3 REFERENCES
8.4 GENERAL
8.5 LIVE STAKES
8.6 PLANT SUBSTITUTION
8.7 PLANTING PREPARATION
8.8 STREAM BANK PLANTING
8.9 PLANTING PERIODS
8.10 REMOVAL OF NUISANCE VEGETATION
8.11 WATER FOR PLANTINGS
8.12 SUBMITTALS
SECTION 9 - BUFFER PLANTING
9.1 SECTION INCLUDES
9.2 MEASUREMENT AND PAYMENT
9.3 REFERENCES
9.4 GENERAL
9.5 CONTAINER GROWN PLANTS
9.6 BARE ROOT PLANTS
9.7 PLANT SUBSTITUTION
9.8 PLANTING PREPARATION
9.9 PLANTING PERIODS
9.10 REMOVAL OF NUISANCE VEGETATION
9.11 WATER FOR PLANTINGS
9.12 SUBMITTALS
SECTION 1 0 -PERMANENT SEEDING
10.1 SECTION INCLUDES
10.2 MEASUREMENT AND PAYMENT
10.3 REFERENCES
10.4 GENERAL
10.5 SEEDBED PREPARATION
10.6 SEEDING
10.7 SEEDING DATES
10.8 SOIL AMENDMENTS
6
6
6
6
7
7
7
7
7
7
7
7
8
8
9
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
I1
11
11
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
11

10.9 MULCH
SECTION 11 - SEDIMENT & EROSION CONTROL
11.1 SECTION INCLUDES
11.2 MEASUREMENT AND PAYMENT
11.3 REFERENCES
11.4 MATERIALS
11.5 SILT FENCE

13 11.6 TEMPORARY SEEDING
14 SECTION 12 - SITE MAINTENANCE
14 12.1 SECTION INCLUDES
14 12.2 MEASUREMENT AND PAYM
14 12.3 EXECUTION
14
14
111
SECTION 1 - GENERAL REQUIREMENTS
1.1 SECTION INCLUDES
General requirements and information related to the work including,
summary of work.
1.2 SUMMARY OF WORK
The Watauga County Stream Repairs and Bank Stabilization project
consists of the earthwork construction of repaired and stabilized
channel banks, toe stabilization, and/or planting of the repaired channel
banks and surrounding buffer area. Refer to the Construction Drawings
and to these Specifications for project details.
1.3 WORKFORCE EXPERIENCE
The Contractor is required to have the appropriately experienced
personnel on-site to operate equipment and insure that the construction
sequence and installation procedures are followed as determined by the
Engineer. Contractor personnel should be familiar with stream repair
andbank stabilization techniques and the correct method of installing
these repairs.
11
1.4 SPECIFIC EQUIPMENT REQUIREMENTS
The Contractor is required to have at a minimum two excavators with
hydraulic thumbs during the entire course of construction unless
otherwise approved by the Engineer. The hydraulic excavators must be
of suffi4ent size to lift, manipulate, and install boulders larger than 5-
foot by 4-foot by 3-foot (a maximum of 6 tons).
1.5 MEASUREMENT AND PAYMENT
All measurement and payment for services performed shall be as
indicated in the PROJECT AGREEMENT. As such, they are not
defined in these technical Specifications.
END OF SECTION
SECTION 2 - TEMPORARY FACILITIES
2.1 SECTION INCLUDES
Required temporary facilities including site access, temporary sanitary
facilities, barriers, traffic control, construction staging area, Contractor
coordination, protection of existing facilities and installed work,
erosion control measures, and general site cleaning.
2.2 MEASUREMENT AND PAYMENT
See PROJECT AGREEMENT
2.3 TEMPORARY SANITARY FACILITIES
Provide and maintain required sanitary facilities and enclosures. No
permanent sanitary facilities exist at the project site.
2.4 BARRIERS
Provide barriers to prevent unauthorized entry to construction areas, to
allow for Owner and Engineer access to site, and to protect existing
structures and adjacent properties from damage due to construction
operations.
2.5 TRAFFIC CONTROL
Provide traffic control as required to protect the public safety.
Conform to all requirements of State, County, City, or local laws and
requirements for traffic control. Conformance with Contract
Documents does not relieve the Contractor from responsibility for
public safety. Construction operations may be underway on adjoining
portions of the site.
2.6 STAGING AREA
The Owner will designate an area for staging of Contractor's
equipment and construction materials for the duration of construction.
This area shall be maintained so as to provide a sightly appearance and
a safe working environment. No other area shall be used for this
purpose without the approval of the Owner.
Storage of oil or fuel shall be confined to the construction staging area.
Refueling of all vehicles and equipment shall occur only in the staging
area Refueling of non-mobile equipment located outside of the staging
area will be allowed with Owner approval. No refueling shall occur
within fifty feet of the channel or any other surface water or wetland.
The Contractor shall take appropriate measures to ensure safe fueling
procedures are followed.
Contractor shall provide appropriate spill prevention measures. The
Contractor shall provide a spill containment plan for both the staging
area and the construction area. The plan shall include prevention,
containment, and control of fuel or oil spillage from equipment storage,
refueling, maintenance, and operation on-site. The plan shall address
both mobile and non-mobile equipment used during construction.
Emergency spill cleanup equipment for oil and fuel spills shall be
stored on-site. The Contractor shall notify the Owner and all
applicable agencies within 24 hours of any spill.
L Stream Repairs & Bank Stabilization Page 1 Technical Specifications
Watauga County Stream Repairs October 2005

1
J

1
i

2.7 COORDINATION WITH OWNER AND OTHER
CONTRACTORS
Perform coordination with Owner and schedule work to ensure limited
disruption of daily operations. Obtain approval from Owner prior to
the disruption of any access to site utilities, structures, or locations.
Coordinate the disruption of any utility services without regard to
duration. Provide continuous representation/point of contact for
Owner during all site activities. Only access points approved by the
Owner shall be used during construction.
2.8 PROTECTION OF EXISTING FACILITIES, STRUCTURES,
AND SERVICES
The project vicinity, including existing access routes, will continue to
be used, for daily operations by the Owner and by others throughout the
duration of the construction. The Contractor shall protect existing
facilities, structures, and services throughout the duration of
construction and provide special protection where specified in
individual specification sections. Provide temporary and removable
protection for existing structures and services.
Control activity in the immediate vicinity of facilities, structures, and
services to prevent damage. Any facility, structure, or services
disturbed or damaged, either intentionally or unintentionally, shall be
removed and reinstalled or repaired to the Owner's satisfaction.
Repairs to or replacement of facilities, structures, or services shall be
performed at the expense of the Contractor. Repairs and/or
;replacement shall occur without additional cost to the Owner.
2.9 PROTECTION OF INSTALLED WORK
Protect installed work and provide special protection where specified in
individual specification sections. Provide temporary and removable
protection for installed work and products. Control activity in
immediate work area to prevent damage. Any installed work disturbed
or damaged, shall be removed and reinstalled or repaired to the
Engineer's satisfaction. Repairs to or replacement of installed work
shall be performed at the expense of the Contractor. Repairs and
replacement shall occur without additional cost to the Owner.
2.10 PROGRESS CLEANING AND WASTE REMOVAL
Maintain areas free of waste materials, debris, and rubbish. Maintain
site in a clean and orderly condition. Collect and remove waste
materials, debris, and rubbish from site daily and dispose off site.
Remove temporary utilities, equipment, facilities, and materials prior to
Final Application for Payment inspection. Restore existing facilities
used during construction to original condition.
2.11 EROSION CONTROL
Contractor shall be responsible for preventing erosion on the site and
sedimentation off the site. Methods shall be employed as
recommended in the North Carolina Erosion and Sediment Control
Planning and Design Manual, latest edition.
2.12 FINAL CLEANING
Execute final cleaning prior to final project assessment. Clean site and
all installed work. Remove waste and surplus construction materials,
rubbish, and construction facilities from the site.
END OF SECTION
Stream Repairs & Bank Stabilization Page 2 Technical Specifications
Watauga County Stream Repairs October 2005
SECTION 3 - QUALITY CONTROL
3.1 SECTION INCLUDES
Observiation of construction operations and buffer and stream bank
planting.
3.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
3.3 REFERENCES
For products or workmanship specified by association, trade, or other
consensus, comply with requirements of the standard, except when
more rigid requirements are specified or are required by applicable
codes.
Conform to reference standard by date of issue on date of Contract
Documents, except where a specific date is established by code.
Section 6 (Filling, Backfilling, and Compaction) of these
Specifications.
h
Section 8 (Stream Bank Planting) of these Specifications.
Section 9 (Wetland and Buffer Planting) of these Specifications.
3.4 CONSTRUCTION OBSERVATION
The Owner has engaged the Engineer to observe construction
operations as required in these Specifications. Reports (either verbal or
written) shall be submitted concurrently to the Owner and Contractor,
indicating observations and indicating compliance or non-compliance
with Contract Documents.
Observation of construction operations does not relieve Contractor of
obligation to perform work to contract requirements. The Contractor
shall allow observation personnel access to materials and the
construction-site as required.
3.5 PLANTING OBSERVATION
The Owner has engaged the Engineer to observe stream bank and
buffer planting as required in these Specifications. Reports will be
submitted concurrently to the Owner and Contractor, indicating
observations and indicating compliance or non-compliance with
Contract Documents.
Observation of planting operations does not relieve Contractor of
obligation to perform work to contract requirements. The Contractor
shall allow observation personnel access to materials (see stream bank
plantings specified in Section 8) and the construction-site as required.
END OF SECTION
Stream Repairs & Bank Stabilization Page 3 Technical Specifications
Watauga County Stream Repairs October 2005

IJ
1

SECTION 4 - SITE PREPARATION
4.1 SECTION INCLUDES
Site preparation shall consist of utility location and protection, clearing,
grubbing and stripping of the work area, and construction of any
required temporary construction access routes and temporary sediment
and erosion control measures.
4.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
4.3 UTILITY LOCATION AND PROTECTION
The Contractor shall locate all existing utilities and mark them for
identification. Contractor shall provide means for protecting utilities
from any damage during site work. Repair of damaged utilities shall be
at the Contractor's expense. Coordination should be made with Owner
to locate and mark site specific utilities. NC ONE CALL (1-800-632-
4949)
4.4 SEDIMENTATION AND EROSION CONTROL

1

Contractor shall be responsible for preventing erosion on the site and
sedimentation off the site. Methods shall be employed as
recommended in the North Carolina Erosion and Sediment Control
Planning and Design Manual, latest edition.
The Contractor shall control sedimentation runoff with methods
approved by the Engineer during the course of construction of this
Project. Depending on the magnitude of the clearing and grubbing
associated with the project, an Erosion Control Plan may be-required
Temporary erosion and sediment control measures shall be installed as
described in Section 11 (Sediment & Erosion Control). The Contractor
shall conform to all the rules, regulations, laws, and ordinances of the
State of North Carolina, and of all other authorities having jurisdiction.
4.5 CONSTRUCTION LAYOUT
The construction layout may include, but will not necessarily be limited
to, channel disturbance limits, earthwork limits, and appropriate
grading values. The Contractor is responsible for the construction
surveying and layout. The Contractor is required to have a laser level
or other equivalent equipment available on-site during the entire period
of construction.
4.6 CLEARING, GRUBBING, AND STRIPPING
Conform to applicable codes for environmental requirements, disposal
of debris,',and erosion and sedimentation control as described above.
Coordinate clearing work with utility owners and operators as
describedlabove. Establish a schedule for daily removal of debris from
the site. Debris may not be stockpiled on-site. Clear areas required for
access to site and execution of work. Remove trees, stumps, other
wood, metal, or rubble debris within work areas unless otherwise
directed by Engineer.
Remove stumps, main root ball, and all roots with a diameter greater
than 2 inches. Leave area in a clean and neat condition. Grade site
surface daily to control the direction of channelized flow and prevent
free standing surface water.
In areas where bank repairs will be implemented, the existing top six
inches of soil should be removed and stockpiled prior to excavation,
construction, or reconstruction efforts.
4.7 DEWATERING
Comply with all rules, regulations, laws, and ordinances of the State of
North Carolina, and of all other authorities having jurisdiction.
Provide, without additional cost to the Owner, all labor, materials,
equipment, and services necessary to make the work comply with such
requirements. Install all barriers, erosion and sedimentation control
devices, silt fences, and other measures as required to prevent off-site
sedimentation.
Grade and ditch the site as necessary to direct surface runoff away from
open excavations and subgrade surfaces. All water drained from the
Work shall be disposed of in a manner that will not result in undue
interference with other work or damage adjacent properties, other
surfaces, structures, and utilities. All water due to the dewatering
operation shall be legally disposed of in accordance with all applicable
State and federal regulations and other applicable regulations.
Under no circumstances shall fill be placed in excavations containing
standing water without approval of the Engineer.
END OF SECTION
Stream Repairs & Bank Stabilization Page 4 Technical Specifications
Watauga County Stream Repairs October 2005

SECTION 5 - EXCAVATION
All areas where topsoil is distributed shall be disked or harrowed to
5.1 SECTION INCLUDES ensure soil aeration and to increase the surface roughness prior to
' planting.
Provide all necessary equipment and labor to excavate for channel
restoration without damage or interruption of utility service. 5.7 TOLERANCES
5.2 MEASUREMENT AND PAYMENT Top surface of channel protective lining (where applicable): Plus or
minus one inch from required elevations.
See PROJECT CONTRACT
Top surface of fill, backfill, and topsoil: Plus or minus one inch from
5.3 REFERENCES required elevations.
Occupational Safety and Health Administration - Construction END OF SECTION
Standards for Excavations, 29 CFR Part 1926.650-.652.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
5.4 PREPARATION
Locate, identify, and protect utilities from damage as described in
Section 4.3. Notify utility companies and coordinate for and/or install
protection of utilities.
5 EXCAVATING
5
.
Protect all utilities and structures that may be damaged by excavating
work.
In areas where stream and floodplain grading will be implemented, the
existing top six inches of soil should be removed and stored prior to
construction or reconstruction efforts.
Perform Work in accordance with Occupational Safety and Health
Administration (OSHA) - Construction Standards for Excavations, 29
CFR Part 1926.650-.652. Provide trench and excavation protection as
required. Slope banks with machine to stabilize the slope or flatten it
until shorjed. Grade top perimeter of excavation to prevent surface
water from draining into excavation. Where required to protect
utilities, perform excavation by hand.
Remove subsoil, boulders, and rock as directed by the Engineer.
Notify Engineer if subsurface conditions require excavation of larger
subsoil, boulders, and rock, and discontinue Work. Engineer may
direct adjustment in construction elevations. Adjustment of elevations
shall not be a basis for additional payment.
Correct areas over excavated in accordance with Section 6 (Filling,
Backfilling, and Compaction) and as shown in the Construction
Drawings:; Stockpile select excavated material on-site for re-use in
backfill. Stockpile location shall be subject to Owner approval.
5.6 PLANTING PREPARATION
In areas where buffer planting will be implemented, the stockpiled
topsoil and/or off-site topsoil (as required), should be distributed in
pteparation for restoration planting operations as described in
SECTION! 7 (Channel Protective Linings and In-stream Structures) of
these Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of four
(4) inches.,

Technical S
ecifications
Stream Repairs & Bank Stabilization Page p
5
Watauga County Stream Repairs October 2005

i

SECTION 6 - FILLING, BACKFILLING AND COMPACTION
6.1 SECTION INCLUDES
Provide, all necessary equipment and labor to perform filling,
baclffilling, and compaction necessary for construction of repaired
channel banks, and other site work as shown on the Drawings without
damage, or interruption of utility service.
Replacement of removed topsoil shall be as described in SECTION 5.6
(Planting Preparation) of these Specifications.
6.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
Backfill areas to contours and elevations with unfrozen materials. Do
not backfill over porous, frozen, or spongy subgrade surfaces. Employ
a placement method that does not disturb or damage other work.
Make gradual grade changes. Blend slope into level areas. Place
backfill and fill in loose level lifts not to exceed six inches in thickness
before compaction.
Earth fill in repaired channel banks and other structures shall be placed
so as to meet the following additional requirements:

6.3 REFERENCES
ASTM D698 - Test Methods for Moisture-Density Relations of Soils
and Soi11-Aggregate Mixtures, Using 5.5 lb. Rammer and 12-inch Drop.
ASTM DI 556 - Test Method for Density of Soil in Place by the
Sand-Cone Method.
ASTM D2922 - Test Methods for Density of Soil and Soil-Aggregate
in Place by Nuclear Methods (Shallow Depth)..
ASTM D3017 - Test Methods for Water Content of Soil and Rock in
Place by,Nuclear Methods (Shallow Depth).
ASTM D2487 - Classification of Soils for Engineering Purposes.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
6.4 FILL MATERIALS
Soil excavated during construction and stockpiled may be re-used as
fill provided that it can be conditioned and compacted as specified.
Supplement or replace excavated soils with ordinary fill as shown on
the Drawings and as needed to complete work. Fill for Lower Bank
Zone shall consist of off-site channel bed material from an approved
borrow source. Ordinary fill for Mid-Bank and Upper Bank Zones
shall be any soil classified as SM, SC, SP-SM, SP-SC, SC-SM, SP, or
SW under ASTM D2487 unless otherwise directed by the Engineer.
If soil excavated during cut operations is not re-used, it shall be
removed from the site to an appropriate disposal facility at no
additional charge to Owner. The Contractor shall be responsible for
the payment of all fees associated with transportation and disposal of
unusable materials.
Suitable borrow material may be available within the vicinity of the
project site but must be identified by the Contractor and approved by
the Engineer.
6:5 PREPARATION
Compact Subgrade to density requirements for subsequent backfill
materials. Cut out soft areas of subgrade not capable of compaction in
place. Backfill with ordinary fill material and compact to density equal
to or greater than requirements for subsequent fill material..
6.6 BACKFILLING, FILLING, AND SURFACE PREPARATION
a. The distribution of materials throughout each zone shall be
essentially uniform and the fill shall be free from lenses, pockets,
streaks, or layers of material differing substantially in texture or
gradation from the surrounding materials.
b. Backfill areas to contours and elevations with unfrozen materials.
Do not backfill over porous, frozen, or spongy subgrade surfaces.
Employ a placement method that does not disturb or damage other
work. Place backfill and fill in loose level lifts not to exceed six
inches in thickness before compaction. Make gradual grade
changes. Blend slope into level areas.
c. If the surface of any layer becomes too hard and smooth for proper
bond with the succeeding layer, it shall be scarified parallel to the
axis of the fill to a depth of not less than 2 inches before the next
layer is placed.
d. The top surfaces of embankments shall be maintained
approximately level during construction, except that a crown or
cross-slope of not less than 2% shall be maintained to insure
effective drainage, and except as otherwise specified for drain fill
zones.
e. Repaired channel banks shall be constructed so that the slope of
the bonding surfaces between embankment in place and
embankment to be placed is not steeper than 1 foot horizontal to I
foot vertical, unless otherwise specified on the Contract Drawings.
New embankment material shall be benched into existing slope as
shown on the plans. Short bench levels shall be formed to a slope
of 1 H:1 V or flatter, based on existing slope conditions as
determined by the Engineer at the time of construction, unless
otherwise specified on the Contract Drawings. Benching shall be
constructed in such a fashion as to inhibit the formation of
preferential planes of slope failure. The bonding surface of the
embankment in place shall be stripped of all loose material, and
shall be scarified, moistened and recompacted when the new fill is
placed against it as needed to insure a good bond with the new fill
and to obtain the specified moisture content and density in the
junction of the in-place and new fill. Any variation to this method
of tying new fill into the existing filled bank shall be determined
in the field at time of construction by the Engineer.
6.7 COMPACTION AND QUALITY CONTROL
For backfill operations, compaction shall be performed using tracked
equipment as directed by the Engineer. Compaction greater than that
provided by tracked equipment may be deemed necessary by the
Engineer based on-site or soil conditions. Provide compaction as
directed by the Engineer. Lift thickness shall not exceed 6".
Stream Repairs & Bank Stabilization Page 6 Technical Specifications
Watauga County Stream Repairs October 2005
6.8 PROTECTION OF FINISHED WORK
Protect, finished work. Reshape and re-compact fills subjected to
vehicular traffic or damaged by erosion.
6.9 TOLERANCES
Top surface of channel protection lining (where applicable): Plus or
minus one inch from required elevations.
Top surface of fill, backfill, and topsoil: Plus or minus one inch from
required elevations.
Top surface of floodplain (where applicable):. Plus or minus one inch
from required elevations.
END OF SECTION
SECTION 7 - CHANNEL PROTECTIVE LININGS AND TOE
STABILIZATION
7.1 SECTION INCLUDES
Temporary and permanent channel erosion protective linings and toe
stabilization
7.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
7.3 REFERENCES
The following specifications and methods form a part of this
Specification:
ASTM C88 - Standard Test Method for Soundness of Aggregates by
Use of Sodium Sulfate or Magnesium Sulfate
ASTM C127 - Standard Test Method for Specific Gravity and
Absorption of Coarse Aggregate
NCDOT - Standard Specifications for Roads and Structures.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
7.4 GENERAL
A Channel Protective Lining has been selected along channel banks.
Materials to be used in Channel Protective Linings and the toe
stabilization are specified in this section.
Channel erosion protection linings shall be constructed of the materials
specified in this section and as shown on the Drawings. Linings shall
be laid true to the grade shown on the Drawings. Linings shall make a
smooth interface with the surrounding grade. Any portion of the lining
which has its grade or surface disturbed after placement shall be
repaired. Any portion thereof already in place which is found to be
defective or damaged shall be repaired or replaced, as directed by the
Engineer, without additional cost to the Owner.
7.5 MATERIALS
Materials include excelsior and coir fiber matting manufactured
especially for erosion control, Eco-Stakes, wire staples, nonwoven
geotextile, boulders, channel bed material, NCDOT Coarse Aggregate
Size #57, NCDOT Class A Erosion Control Stone, NCDOT Class B
Erosion Control Stone, NCDOT Class 1 Rip Rap (RipRap), and
NCDOT Class 2 Rip Rap (RipRap).
Matting for erosion control in areas other than stream banks with mild
slopes shall be excelsior matting. Excelsior matting shall consist of a
machine produced mat of curled wood excelsior that is a minimum of
47 inches in width. The mat shall weigh 0.975 pounds per square yard
with a tolerance of plus or minus 10 percent. At least 80 percent of the
individual excelsior fibers shall be 6 inches or more in length. The
excelsior fibers shall be evenly distributed over the entire area of the
blanket. One side of the excelsior matting shall be covered with an
extruded plastic mesh. The mesh size for the plastic shall be a
11
maximum of 1' x I square. Matting for erosion control shall not be
Stream Repairs & Bank Stabilization Page 7 Technical Specifications
Watauga County Stream Repairs October 2005

i.J
1

dyed, bleached, or otherwise treated in a manner that will result in
toxicityi to vegetation. Other acceptable material manufactured
especially for erosion control may be used when approved by the
Engineer in writing before being used.
Erosion control matting for stream banks shall be CF 7 coir matting.
Matting shall be 100% coir fiber. Minimum Specifications for coir
matting' as follows:
Weight 20.6 oz/yd2 (700 g/m) ASTM-D3776
Thickness 6.34 mm
Water Velocity 10 ft/s
Grab/Elongation (Dry) 115.81bs/23.9% MD ASTM-D4594
54.llbs/33.5% XD
I Manning's n 0.0294

Max Shear Stress 4.46 lb/fe
Nonwoven Geotextile: Geotextile shall be a nonwoven fabric with a
minimum weight of 12 ounces per square yard (ASTM D3776), a
minimum grab strength in either direction of 180 pounds (ASTM
D4632), a minimum puncture resistance of (ASTM D4833) of 85
pounds, and permeability of (ASTM D4491) greater than 0.2 cm/sec.
Fabric meeting these Specifications shall still be subject to approval or
rejection; by the Engineer. At the time of installation, the fabric will be
rejected if it has defects, rips, holes, flaws, deterioration, or damage
incurred during the manufacture, transportation, or storage.
NCDOT';Coarse Aggregate Size #57: Shall conform to gradation
requirements of Table 1005-1, NCDOT Specifications.
NCDOT Class A Erosion Control Stone: 2 to 6-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards
(No more than 5% of the material famished can be less than the
minimum size specified, nor more than 10% of the material can exceed
the maximum size specified). Concrete rubble shall not be used.
NCDOT Class B Erosion Control Stone: 5 to 12-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards
(No more than 5% of the material furnished can be less than the
minimum size specified, nor more than 10% of the material can exceed
the maximum size specified). Concrete rubble shall not be used.
NCDOT Class 1 Rip Rap (RipRap): 5 to 17-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards.
The stone shall vary in weight from 5 to 200 pounds with 30%
weighing a minimum of 60 pounds each and 10% weighing a minimum
of 15 pounds each. (No more than 5% of the material furnished can be
less than the minimum size specified, nor can more than 10% of the
material exceed the maximum size specified). The rock fragments shall
be angular to subrounded in shape. Concrete rubble shall not be used.
NCDOT Class 2 Rip Rap (RipRap): 9 to 23-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards.
The stone shall vary in weight from 25 to 250 pounds and 60% shall
weigh a minimum of 100 pounds each. (No more than 5% of the
material furnished can be less than the minimum size specified, nor can
more than 10% of the material exceed the maximum size specified).
The rock fragments shall be angular to subrounded in shape. Concrete
rubble shall not be used.
Boulders (Toe Stabilization and Footer Rocks): Boulders of
approximate dimension 5' x 3' x 2' shall be individually picked by
Contractor from the quarry or the on-site stockpile for use in toe
stabilization construction. Boulders as small as 3' x 2' x 2' may be
used; however, they shall not constitute more than 30% of the total
boulders. Boulders shall be relatively flat on either side in the same
dimension, preferably the long dimension and must have smooth ends.
7.6 TOE STABILIZATION
The work covered by this section consists of the construction of rock
toe stabilization.
The length of toe stabilization to be constructed will be affected by
actual conditions that occur during the construction of the project.
Such variations in quantity will not be considered as alterations in the
details of construction or a change of character of the work.
A tracked hydraulic excavator with a thumb of sufficient size to move
specified boulders is required for this item Precise placement of toe
stabilization will be determined during construction by the Engineer
and may not reflect the construction Drawings. Toe stabilization
installed must be inspected and approved by the Engineer. Excavation
for the purpose of installation is incidental and is covered by this line
item
The excavation of the subgrade and installation will be consecutive and
continuous. Once the installation procedure has been initiated, it will
be completed before the end of the workday. Any incidental/accidental
discharge of sediment accumulation as a result of the installation
procedure will be removed or integrated into the designed bedform.
Excavation shall terminate at bedrock if contacted prior to the design
grade. Bedrock will be excavated only if it is determined to be rippable
and necessary by the Engineer.
Install toe stabilization as shown on the Drawings and as directed by
the Engineer. Grade area where toe stabilization is to be constructed.
Surface shall be free of obstructions, debris, and pockets of soft or low
density material. Unless otherwise directed by the Engineer, the stone
shall be placed on the slope and/or angle as indicated on the plans. The
stone shall be graded so that the smaller stones are uniformly
distributed throughout the mass. The Contractor may place the stone
by mechanical methods provided that when the work is completed, it
forms a properly graded, dense, neat layer of stone.
7.7 CHANNEL PROTECTIVE LININGS
Grade the area to be lined. Surface shall be free of obstructions, debris,
and pockets of soft or low density material. The rock weir structures
shall be completed prior to installation of the channel protective
linings.
Cover area with all available on-site stockpiled topsoil to a preferred
minimum depth of 6inches. Final grade with topsoil shall be as shown
on Drawings. Topsoil shall be prepared with fertilizer and lime, and
seeded as described in Section 10 (Permanent Seeding) of these
Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of six
(6) inches.
Stream Repairs & Bank Stabilization Page 8 Technical Specifications
Watauga County Stream Repairs October 2005

7

P

F

Install OF-7 erosion control matting perpendicular to the axis of the
stream. The matting shall be laid smooth and free from tension, stress,
folds, wrinkles and creases. Horizontal overlaps shall be a minimum of
12 inches with the upper matting overlapping the lower matting.
Vertical overlaps in matting shall be a minimum of 12 inches with the
upstream matting overlapping the downstream matting.
The top; (crest) edge of the matting shall ,be anchored in a trench at least
12 inches deep, as shown on the Construction Drawings, to prevent
undercutting of the matting. The trench should be located a minimum
of 12 inches from the top of bank, and shall not alter channel or
floodplnin grade. Matting trench and Eco-Stakes® shall be installed as
shown on Drawings. Matting shall be anchored utilizing Eco-stake®
brand stakes installed not more than 3 feet apart (3' on centers) and
staggered, with a minimum of 3 stakes per square yard of matting over
the entire lined area 24-inch Eco-stakes® shall be used along the toe
of the channel and 12-inch stakes shall be used within the field and top
edge of the matting as detailed on the Construction Drawings. Along
all laps (both vertical and horizontal) in the matting, install a common
row of staples at the seam, installing staples on 1 foot (12 inch) centers.
Along the toe, 24 inch Eco-Stakes® shall be spaced not more than 2
feet All; stakes shall be driven perpendicular to the axis of the stream as
shown op Drawings. Care shall be taken to avoid damage to matting
material,
In the event that the matting is displaced or damaged during
installation, the matting shall be repositioned or replaced. This will be
done at no additional cost to the Owner.
7.8 SLOPE PROTECTION
Grade area to be lined. Surface shall be free of obstructions, debris,
and pockets of soft or low density material.
Cover area with all available on-site stockpiled topsoil to a preferred
minimum depth of 6 inches. Final grade with topsoil shall be as shown
on Drawings. Topsoil shall be prepared with fertilizer and lime, and
seeded as described in Section 10 (Permanent Seeding) of these
Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of six
(6) inches.
Install excelsior matting perpendicular to slope. Matting shall be
unrolled with netting material on top and blanket material in contact
with the soil. (Note: some excelsior matting has netting on both sides.)
The matting shall be laid smooth and free from tension, stress, folds,
wrinkles and creases. Horizontal overlaps shall be a minimum of 12
inches with the upper matting overlapping the lower matting. Vertical
overlaps in matting shall be a minimum of 12 inches.
The top (crest) and bottom (toe) edges of the matting shall be anchored
in trench at least 12 inches deep as shown on Drawings to prevent
undercutting of the matting. Matting trench and wire staples shall be
constructed and installed as shown on Drawings. Wire staples shall be
installed not more than 3 feet apart (3' on centers) and staggered, with a
minimum of 3 stakes per square yard of matting over the entire lined
area. Staples shall be driven perpendicular to the soil surface. Staples
shall be driven flush with soil surface to reduce potential for movement
of the erosion control matting. Staples shall be installed in parallel
rows on 3' centers and in trenches at the top and bottom of the slope as
shown on;Drawings. Along all laps (both vertical and horizontal) in
the matting, install a common row of staples at the seam, installing
staples on, Hoot (12 inch) centers. All standard anchoring staples shall
be 18 inches in length. Staples shall be driven in with a wooden
mallet. Care shall be taken to avoid damage to matting material.
In the event that the matting is displaced or damaged during
installation, the matting shall be repositioned or replaced. This will be
done at no additional cost to the Owner.
END OF SECTION
Stream Repairs & Bank Stabilization Page 9 Technical Specifications
Watauga County Stream Repairs October 2005
SECTION 8 - STREAM BANK PLANTING 8.6 PLANT SUBSTITUTION
1

I I

8.1 SECTION INCLUDES
Provide all necessary equipment and labor to implement stream bank
planting plan.
8.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
8.3 REFERENCES
The following specifications and methods form a part of this
Specification:
NCDOT - Standard Specifications for Roads and Structures.
15 NCAC 2B.200 - Classification of Water Quality Standards
Applicable to Surface Waters & Wetlands of North Carolina
American Standard for Nursery Stock, latest edition
No change in the specified plants (species, variety, size, caliper,
furnish, etc.) will be made without written approval of the Engineer.
All requests by the Contractor for substitutions shall be presented in
writing and shall include a listing of the sources which have been
contacted in an attempt to secure the specified plant material. Requests
for substitutions shall include botanical name, common name, size,
caliper, and furnish description of the proposed substitute. No increase
in compensation will be made to the Contractor as a result of the use of
the approved substitute plants.
8.7 PLANTING PREPARATION
In areas where stream restoration will be implemented, preparation for
restoration planting operations shall be as described in SECTION 7
(Channel Protective Linings) of these Specifications.
Where live stakes shall be planted, through the Channel Protective
Lining, holes shall be made by neatly punching a hole in the matting
with a dibble bar (a heavy metal tool with a blade and a foot petal).
The dimensions of the hole shall not exceed 3" in any direction and
shall not damage the surrounding matting.

G

NCDENR - Erosion and Sediment Control Planning and Design
Manual
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
8.4 GENERAL
All plants shall be as called for by these Specifications and shown on
the Drawings. All plants delivered shall be true to name. Each plant,
or group of the same species, variety, and size of plant, shall be legibly
tagged with the name and size of the plant.
All plants shall be first-class representatives of their species. Stakes
shall be reasonably straight.
All plants shall be free from plant diseases and insect pests. All
shipments of plants shall comply with all nursery inspection and plant
quarantine regulations of the States of origin and destination, as well as
with Federal regulations governing interstate movement of stock. If
stock from other States is used, the stock shall be accompanied by a tag
or certificate stating, in effect, that the stock has been inspected and
certified by an authorized official of the State of origin as apparently
free from injurious plant pests.
All plants shall be subject to inspection at any time by the Engineer.
Any such inspection before or during planting operations, however
shall not be construed as final acceptance of the plants involved.
8.5 LIVE STAKES
8.8 STREAM BANK PLANTING
Where live stakes shall be planted, they shall be installed at a 45 to 60
degree angle in the direction of stream flow. The buds of stakes and
plant cuttings should point upward and abo#t 2 inches of wood should
be exposed above the ground surface. Tamp the surrounding soil
firmly to eliminate air pockets.
Where stream bank planting is directed, areas shall be planted with
shrubs, using 6-foot by 6-foot centers as shown on the Construction
Drawings.
Care should be taken to avoid planting stakes too deep or too shallow,
and to avoid damage to stakes during planting. Planting depth should
be in accordance with listed references and supplier recommendations.
8.9 PLANTING PERIODS
The installation of live stakes, bare root, or container grown plants
shall be performed between October 15 and December 15, 2005.
However, planting can not begin until all streamrepairs have been
completed.
8.10 REMOVAL OF NUISANCE VEGETATION
Removal or control of nuisance vegetation shall be performed for a
period of 90 days as necessary to ensure adequate survival of specified
plant species.
8.11 WATER FOR PLANTINGS
Live stakes, if approved for use by the Engineer, shall consist of freshly
cut live plants of select stock which has been developed by proper
cultural uvatment. Stakes and cuttings shall be 3/8" to 1/2" diameter
and between 12 and 18 inches long. They shall be carefully cut from
mother-stock plantings. Plant materials shall be packaged, transported,
and handled in a manner that will prevent injury, drying out, or
freezing.

The Contractor shall install a rain gage and collect daily gage readings
at the site. Contractor shall provide initial watering on the day of
planting and thereafter at a minimum rate of 1 inch per week (including
rainfall) for a period of 90 days. Water used in the planting or care of
Stream Repairs & Bank Stabilization Page 10 Technical Specifications
Watauga County Stream Repairs October 2005

II
vegetation and plantings shall meet the requirements of Class C fresh
waters as defined in 15 NAC 2B.200. SECTION 9 - BUFFER PLANTING
8.12 SUBMITTALS 9.1 SECTION INCLUDES
Contractor shall submit purchase certificates (or other proof) of all Provide all necessary equipment and labor to implement buffer planting
species planted. plan.
END OF SECTION 9.2 MEASUREMENT AND PAYMENT
' See PROJECT CONTRACT
9.3 REFERENCES
' American Standard for Nursery Stock, latest edition
NCDENR - Erosion and Sediment Control Planning and Design
' Manual
15 NCAC 2B.200 - Classification of Water Quality Standards
Applicable to Surface Waters & Wetlands of North Carolina
' The following specifications and methods form a part of this
q Specification:
' NCDOT - Standard Specifications for Roads and Structures.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply
9.4 GENERAL
' All plants shall be as called for by these Specifications. Bare rooted
plants may be used in lieu of container grown plants provided written
approval for such use has been obtained from the Engineer. Grading of
plants, type and minimum dimensions of containers shall conform to
the Specifications contained in the latest edition of American Standard
for Nursery Stock. Plants shall not be cut back from larger sizes to
meet sizes called for on the Drawings. All plants delivered shall be
true to name. Each plant, or group of the same species, variety, and
' size of plant, shall be legibly tagged with the name and size of the
plant.
All plants shall be first-class representatives of their species. The root
system shall be vigorous and well-developed. The branch systems shall
be of normal development, and free from disfiguring knots, sun scald
injuries, abrasions of the bark, dead or dry wood, broken terminal
growth, or other objectionable disfigurements. Trees shall have
reasonably straight stems, and shall be well branched and symmetrical
in accordance with their natural habits of growth.
' All plants shall be free from plant diseases and insect pests. All
shipments of plants shall comply with all nursery inspection and plant
quarantine regulations of the States of origin and destination, as well as
with Federal regulations governing interstate movement of nursery
' stock. If nursery stock from other States is used, the stock shall be
accompanied by a tag or certificate stating, in effect, that the nursery
stock has been inspected and certified by an authorized official of the
State of origin as apparently free from injurious plant pests.
All plants shall be subject to inspection at any time by the Owner,

Stream Repairs & Bank Stabilization Page 11 Technical Specifications
Watauga County Stream Repairs October 2005

Engineer, or a party to be named by the Owner. Any such inspection
before or during planting operations, however shall not be construed as
' final acceptance of the plants involved.
9.5 CONTAINER GROWN PLANTS
' Container grown plants shall be healthy, vigorous, well-rooted, and
shall have become established in the container in which they are
delivered. These plants shall have been in the established container
long enough for the fibrous roots to have developed so that the root
' mass will retain its shape and hold together when removed from the
container. The container shall be a 1 gallon container or larger,
sufficiently rigid to firmly hold the soil protecting the root during
transporting, handling, and planting, and the soil shall not be allowed
to become frozen.
9.6 BARE ROOT PLANTS

J

n
u

0

G
Bare root plants, if approved for use by the Engineer, shall have a
heavy fibrous root system which has been developed by proper cultural
treatment. They shall be dug, packaged, transported, and handled in a
manner that will prevent injury to or drying out of the trunks, branches,
or roots, or freezing of the roots.
9.7 PLANT SUBSTITUTION
No change in the specified plants (species, variety, size, caliper,
furnish, ;etc.) will be made without written approval of the. Engineer.
All requests by the Contractor for substitutions shall be presented in
writing and shall include a listing of the sources which have been
contacted in an attempt to secure the specified plant material. Requests
for substitutions shall include botanical name, common name, size,
caliper, and fumish description of the proposed substitute. No increase
in compgnsation will be made to the Contractor as a result of the use of
the approved substitute plants.
9.8 PLANTING PREPARATION
In areas where wetland and buffer planting will be implemented,
preparation for planting operations shall be as described in SECTION
5.6 (Planting Preparation) of these Specifications.
Where container grown plants will be planted, holes made in
preparation for tree and shrub species planting shall be as shown on the
Construction Drawings.
Bare root plants and container-grown plants shall be planted in holes
made by peatly punching a hole through slope protection matting and
into existing grade with a dibble bar (a heavy metal tool with a blade
and a foot petal). The dimensions of the hole shall not exceed 3" in any
direction.
9.9 PLANTING PERIODS
The installation of bare root and container grown plants shall be
performed) between October 15 and December 15, 2005. However,
planting can not begin until all stream repairs have been completed.
9.10 REMOVAL OF NUISANCE VEGETATION
Removal or control of nuisance vegetation shall be performed for a
period of 90 days as necessary to ensure adequate survival of specified
plant species.
9.11 WATER FOR PLANTINGS
The Contractor shall install a rain gage and collect daily gage readings
at the site. Contractor shall provide initial watering on the day of
planting and thereafter at a minimum rate of 1 " per week (including
rainfall) for a period of 90 days. Water used in the planting or care of
vegetation and plantings shall meet the requirements of Class C fresh
waters as defined in 15 NAC 213.200.
9.12 SUBMITTALS
Contractor shall submit purchase certificates (or other proof) of all
species planted.
END OF SECTION
Stream Repairs & Bank Stabilization Page 12 Technical Specifications
Watauga County Stream Repairs October 2005

SECTION 10 -PERMANENT SEEDING
' 10.1 SECTION INCLUDES
Permarent seeding for permanent site stabilization.
' 10.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
n

n

I I

I I

10.3 REFERENCES
The following specifications and methods form a part of this
Specification:
NCDE14R - Erosion and Sediment Control Planning and Design
Manual''
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
10.4 GENERAL
Permanent seeding shall be executed in temporary lined areas and all
other areas which are disturbed during construction activities. In areas
where Channel Protective Lining will be installed, seedbed preparation
and seeding shall be performed prior to the placement of erosion
control matting (See SECTION 7 - Channel Protective Linings).
10.5 SEEDBED PREPARATION
Complete grading before topsoiling or preparing seedbeds. Avoid
creating steep slopes. Excess stockpiled topsoil not used in
construction of Channel Protective Lining shall be redistributed across
areas to be seeded. Where topsoil is unavailable, topsoil shall be
imported
The topsoil should be spread to a uniform depth of six inches and
bonded to the subsoil by loosening with a disc, harrow, or chisel plow.
Areas where seeding will occur on exposed finished grade shall be
disked or, harrowed to ensure soil aeration and to increase the surface
toughness prior to planting.
Apply lime and fertilizer evenly across seedbed and work into the top
4-6 inches of soil by discing or other suitable means. Operate
machinery on the contour.
Rework the surface if soil becomes compacted or crusted prior to
seeding. Complete seedbed preparation by breaking up large clods and
raking into a smooth, uniform surface. Fill in or level depressions that
can collect water.
10.6 SEEDING
areas where Channel Protective Lining will be installed, no mulch shall
be used and erosion control matting shall be placed within 24 hours of
seeding. Apply mulch at the rates indicated below.
Areas with Channel Protective Linings:
Species Rate Rbs/acre)
Creeping Red Fescue 80
(Festuca ruba ruba)
Redtop 15
(Agrostis stolonifera L.)
Kentucky bluegrass 15
(Poa pratensis L)
Rye (grain) Grass 15
(Secale cereale)
All other disturbed areas:
SSe cies Rate Rbs/acre)
Creeping Red Fescue 80
(Festuca ruba ruba)
Redtop 15
(Agrostis stolonifera L.)
Kentucky bluegrass 15
(Poa pratensis L)
Rye (grain) Grass 15
(Secale cereale)
Apply permanent seeding to seedbed after preparation is complete. Use
certified seed for permanent seeding whenever possible. Certified seed
is inspected by the North Carolina Crop Improvement Association. It
meets published North Carolina Standards and should bear an official
"Certified Seed" label. Broadcast seed into a freshly loosened seedbed
that has not been settled by rainfall. Mulch must be used on slopes
4H:1 V or steeper and in areas when concentrated water may flow.
Anchor mulch with netting in areas subject to concentrated flow. In
Mulch Rate abs11000 sg. ft. )
Grain Straw 70
Grass Seeding
Tie Dates Possible Rate
Annual Rye Aug. 15 - May 1 60 lbs./ac.
German Millet Mayl - Aug 15 40 lbs./ac.
10.7 SEEDING DATES
Seeding dates given in these Seeding Specifications have the best
probability of success.
. Best Possible
Late winter 15 Feb-15 Mar 1 Dec-15 Mar
Late Fall I Sept-30 Sept 1 Oct-30 Nov
Seeding shall be completed within the "possible" range of dates.
10.8 SOIL AMENDMENTS
Apply lime and fertilizer according to soil tests, or apply 2 tons/acre
(4,000 lb/acre) ground agricultural limestone and 1,000 lb/acre 5-10-10
fertilizer, or as directed by the Engineer.
10.9 MULCH
Apply grain straw, or equivalent cover of another suitable mulching
material as described above. Anchor mulch by roving or netting.
Netting shall be used on slopes steeper than 2H:1 V.
END OF SECTION
Stream Repairs ' & Bank Stabilization
Watauga County Stream Repairs
Page 13
Technical Specifications
October 2005
H

u

0

u
I I

SECTION II - SEDIMENT & EROSION CONTROL
11.1 SECTION INCLUDES
Installation of temporary sediment and erosion control measures to
include installation of silt fence and temporary seeding measures. The
Contractor shall maintain these measures to ensure proper structure
function and vigorous temporary vegetative cover during construction.
11.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
11.3 REFERENCES
The following specifications and methods form a part of this
Specification:
ASTM D4355 - Standard Test Method for Deterioration of Geotextiles
from Exposure to Ultraviolet Light and Water (Xenon-Arc Type
Apparatus)
ASTM 1>4632 - Standard Test Method for Grab Breaking Load and
Elongation of Geotextiles
ASTM D4751 - Standard Test Method for Determining Apparent
Opening,, Size of a Geotextile
NCDENR - Erosion and Sediment Control Planning and Design
Manual
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply-
11.4 MATERIALS
Silt Fence: Silt fence shall have steel posts, woven wire fabric, and
filter fabric. The steel post shall have a minimum length of Y and
minimum width of 13/4". The steel posts shall have projections for
fastening! the wire to the fence. The woven wire fabric shall beat lest
32 inches high, and shall have at least 6 horizontal wires. Vertical
wires shall be spaced a maximum of 12 inches apart. The top and
bottom wares shall be at least 10 gauge. All other wires shall be at least
12%i gauge. The silt fence filter fabric shall meet the following
minimum criteria:
Grab Tensile Strength 100 lbs.
Grab Tensile Elongation 15%
UV Resistance 70%
Apparent Opening Size (AOS) 20 (US Sieve)
11.5 SILT FENCE
The Contractor shall provide all labor, materials, tools and other items
necessary to furnish and install the silt fence as shown on the Drawings
and specified herein. The silt fence shall be placed following the
contours as closely as possible. The ends of the silt fence shall be
turned uphill.
The posts shall not exceed a spacing of 8 feet. The posts shall be
driven into the ground and shall extend above ground as shown on the
Drawings. The filter fabric shall be stapled or wired to each post. The
filter fabric shall extend into the ground as shown in the Drawings.
If possible, the filter fabric shall be cut from a continuous roll to avoid
the use of joints. When joints are necessary, securely fasten the filter
cloth only at a support with overlap to the next post.
Silt fences shall be inspected weekly and after each significant storm (1
inch in 24 hrs.). Any required repairs shall be made immediately.
Sediment shall be removed when it reaches 1 /3 the height of the fence
or 9 inches maximum. Dispose of the sediment in the designated
disposal area.
11.6 TEMPORARY SEEDING
The Contractor shall provide all labor, materials, tools, and other items
necessary to provide temporary seeding in accordance with State and
local Standards.
Areas where no substantial or significant progress is made for more
than 15 days shall be temporarily seeded as shown on the Drawings and
specified herein. All areas must be seeded, mulched, and anchored
unless written approval is granted by the Owner. Incidental grading
shall not constitute substantial or significant progress in construction
activity.
Seeding and mulching shall be done immediately following
construction. All disturbed areas shall be dressed to a depth of 8
inches. The top 3 inches shall be pulverized1to provide a uniform
seedbed.
Agricultural lime shall be applied at a rate of 4,000 pounds per acre
immediately before plowing.
Grass seed shall be applied at the following rate:
Tie Dates Possible Rate
Annual Rye Aug. 15 - May 1 60 lbs./ac.
German Millet Mayl -Aug 15 40 lbs./ac.
5-10-10 fertilizer shall be applied to all disturbed areas at a rate of 1000
pounds per acre, and mulching shall consist of small grain straw
applied a rate of 70 pounds per 1000 square feet (70lbs./ I 000sq.ft.).
Mulch shall be anchored by roving or netting.
END OF SECTION
Stream Repairs & Bank Stabilization Page 14 Technical Specifications
Watauga County Stream Repairs October 2005
SECTION 12 - SITE MAINTENANCE
12.1 SECTION INCLUDES
Site maintenance to ensure vigorous vegetative cover, stable channel
lining, and durability of the work.
12.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
12.3 EXECUTION
Contractor shall revisit the site as to inspect the condition of the project
site. Areas of erosion, settlement, poor vegetative cover, and displaced
coir or excelsior materials or in-stream structures, shall be repaired.
Site visits shall be coordinated with Owner.
Erosion areas shall be filled and reseeded in accordance with Section
10 - Permanent Seeding. Areas of poor vegetative cover shall be
reseeded and refertilized only.
Displaced, damaged, or dead shrub species shall be removed, and
replanted in accordance with Sections 8 & 9 - Stream Bank Planting
and Buffer Planting.
Displaced channel lining materials shall be recovered (if possible) and
replaced or replaced with new channel lining materials to the design
line and grade.
END OF SECTION
Stream Repairs & Bank Stabilization Page 15 Technical Specifications
Watauga County Stream Repairs October 2005

I I 1
I 1

I I
I ? I
I
}
t
111
. ? ? I
1 ? ?.
I I
i
AVnNC3S
,I I II ? I{

I
j ( I
. I
I

? t I I
i

{
I ?
i

(NOT TO SCALE)
ENGINEERING DE51GN FIRM:
McGILL A550CIATE5
55 Broad Street
A5heville, NC 28801
[phone]
ENVIRONMENTAL DESIGN FIRM:
501L * ENVIRONMENTAL
CON5ULTANT5, PA
1010 Raven Ridge Road
Raleigh, NC 27G 14
[phone]
s l,ED FOR:
WATAUGA COUNTY, NC
842 West King 5treet
Boone, NC 28607
(828)2G5-8043
CONSTRUCTION DRAWINGS FOR:
LOWER WATAUGA SITE
THE PONDS SUBDIVISION
STREAM REPAIR5 * 5ANK
STABILIZATION PLAN
WATAUGA COUNTY, NC
CONTENTS:
C 1. COVER, CONTENT5, * VICINITY MAP
C2. WORK 51TE ACCE55 PLAN
C3. 51TE PHOTOGRAP115
C4. PROP05ED REPAIR PLAN
C5. CONSTRUCTION 5EQUENCE * PROP05ED BANK REPAIR
CG. ER0510N CONTROL * PLANTING DETAIL5
C7. ER0510N CONTROL DETAIL5

SEAL 'S
24993
,?i,' ••. ?NOINE?Q•' f4-x.
r?id co wr
u?
z
Hz?
C7
"Z
Uzz
a
Uz
O
?a
z
w
w

w?
a ?0
W O U
2
zV?
D 0
0 Z
U Q }
Q?
s II
m
=u17?0 V N
?FFGZ?u?8
ca
co
?a
zQ
w?
z?
0Z
_U
>>
0
SHEET
cl
WORK SITE ACCESS PLAN
.......
.:
..POND
:::
....:::: ::::
r
ACCESS FROM NC 105
.:.
r' ............................
THE POND ROAD j;
P.I.N.: 1888-06-6567
CYNTHIA
WEATHERS
262 /.i

iii
_ 111111000
NOON= womm"
FLOW
?wn
uq
wz?
Fzm
a. s
MZ
Uzz
a?
UOzm
a
?a
??7a
z
w
z"
L w
wM
a ? Q
Z?
W J
O V
z F_
v
Z) re
°aZ-
Q ?z
/ IN-STREAM WORK o
ACCESS POINT Q
F_
Q Q

WATAUGA RIVER
NOTE:
ANY EASEMENTS REQUIRED FOR CONSTRUCTION ACCESS TO
THE REPAIR AREA SHALL BE COORDINATED BY THE COUNTY.
NOTE:
AT THE MATERIAL ACCESS POINT, ONLY 1 - 6" MAPLE ON THE
WEATHERS PROPERTY AND 1 -4n CHERRY ON THE SZOLLOSY PROPERTY
MAY BE REMOVED. ANY OTHER TREES DAMAGED MUST BE REPLACED AT
THE CONTRACTORS EXPENSE. ALL DAMAGED GRASS SURFACES SHALL BE
RESTORED AS CLOSE AS POSSIBLE TO EXISTING CONDITION.
g d II
t
??O?QWCV
?mZ fi ] (y°(y???,0?(V(yy??,?pN
3ON°000
z
wg
?a.
a
Dw
QU
?U
aQ
?w
w?
?:
0?
SHEET
C2
P.I.N.: 1888-06--8639
P.I.N.: 1888-06-7518 ANN
IMLER
Fs /FRANK
OLLOSY
Y
272
NOT TO SCALE

:...
.. .....................
POND':;':;':::':::'::::'::'::::'::'::':::'::':::' :::::::::::::::::::; ::: ?::::::::;•
i\L-rnin nnL.r
LOWER WATAUGA SITE
PHOTO #1- UPSTREAM END OF REPAIR AREA AT TREE
EXTENDING OUT OVER THE STREAM.
BEGIN TOE STABILIZATION.
LOWER WATAUGA SITE
PHOTO #2 - 30' DOWNSTREAM FROM UPSTREAM END OF REPAIR
REACH, UNDERMINED 24" SYCAMORE & 6" BIRCH.
5' TO T TOE STABILIZATION DOWNSTREAM OF SYCAMORE,
V TO 4' TOE STABILIZATION UPSTREAM OF SYCAMORE.
LOWER WATAUGA SITE
PHOTO ski - NEAR MID-POINT OF REPAIR REACH.
30" UNDERMINED SYCAMORE & RUINS OF WALL.
S TO T TOE STABILIZATION, THIS AREA.
U"q
wz„
Z A
Qw"?
C7
"z
uuzz
oz
a
a
uj a
rA zz
M
?-<w,4
z?
L w
c7 °a
z?
wn
ZQ
Z
W ? Q
?0?
I
Z VCC
D 0
0 ? z
¢U' V z
0
U
Q ? 6)
Q ?
? O
g
zm
z??nOO
n
LOWER WATAUGA SITE
PHOTO #4 - UNDERMINED 30" SYCAMORE
NEAR DOWNSTREAM END OF REPAIR REACH.
TOE STABILIZATION, THIS AREA.
SITE PHOTOGRAPHS
LOWER WATAUGA SITE
PHOTO #6 - DOWNSTREAM END OF REPAIR AREA,
INCLUDING ROCK STEPS, EXISTING ROCK WALL TO REMAIN,
AND EXISTING GABIONS TO REMAIN.
8%Q• I ',
2• Qb ti?:•y;
SEAL
2499
'?y9 ??NQINEE?•:A,
w
1- U)
U) =
/Q
V
C5
?0
Q 1-
0
W
3: P
ON
SHEET
C3
LOWER WATAUGA SITE
PHOTO #5 - DOWNSTREAM END OF REAPAIR AREA,
END TOE STABILIZATION 5 UPSTREAM OF ROCK STEPS.

PROPOSED REPAIR PLAN
SCALE: 1"= 10'
? I
P.I.N.: 1888-06-6567

LIVE TREE EXTENDING ACROSS STREAM CYNTHIA WEATHERS
BEGIN TOE STABILIZATION 262 THE POND ROAD
TAPER TO MATCH EXISTING ROCK ELEVATION
EXISTING TOP OF BANK
4 BUILD NEW TOP OF BANK &
BACKFILL BEHIND TOE STABILIZATION
' _. PER DETAIL
ll?ilY°1?t I?!lI?I?I?I?I?I?I
As 24' YCAMORE ak,
6 Bic F
EW ?
c?
0
J\
EXISTING TOE OF SLOPE/EDGE OF WA
iI?I?I?I?I ' I?
r
r f
r ?
MATERIAL ACCESS
TO SITE
1
1
I
M 6' IRCH r
as, so Ian I ?I
I - I -, -, -, -, ?-' - I - I -?- I ?_' ?_' - ?'_ I _?_ I
3' TO 4' TALL INSTALL TOE STABILIZATION '
PER DETAIL, APPROX. 95 L.F.
TOE STABILIZATION
GRAVEL BAR
WATgU - - _? -
? I I
GA RIVER
` III
'II III III III III fly
NOTES:
1. ALL SITE DATA AS COLLECTED DURING SITE VISIT BY
SOIL AND ENVIRONMENTAL CONSULTANTS, P.A. AND
MCGILL ASSOCIATES IN OCTOBER 2005.
2. ALL LOCATIONS, DISTANCES, AND DIMENSIONS ARE APPROXIMATE AND
INTENDED FOR USE IN THE DEVELOPMENT OF A BANK STABILIZATION
AND REPAIR PLAN.
3. LOCATIONS OF EXISTING UTILITIES AND PROPOSED STRUCTURES AS SHOWN
ARE APPROXIMATE ONLY. EXACT LOCATIONS ARE TO BE VERIFIED IN THE
FIELD BY THE CONTRACTOR.
4. CONSTRUCT TOE STABILIZATION AS DIRECTED BY ENGINEER AT THE
TIME OF CONSTRUCTION.
5' TO 7' TALL
TOE STABILIZATION

B
P.I.N.: 1888-06-7518
EVA & FRANK SZOLLOSY
272 THE POND ROAD

s
N
EXISTING GABIONS
TO REMAIN IN SERVICE
DO NOT DISTURB FOUNDATIC
EXISTING ROCK STEPS
TO REMAIN IN SERVICE
EXISTING ROCK WALL
TO REMA
IN SERVICE
JNI
2 ° CAMORE

;
J
L

' m
IN STREAM ACCESS
TO SITE

F
a!?I?0 ?
I? ?I
bl 0
o?
LIMITS OF DISTURBANCE
BOULDER
REMOVE BROKEN WALL
-?
FROM STREAM, TYP.
BOULDERS
BOULDER BOULDER
BOULDER
'??111 + III
N OTE:
PLANTING AREA TO INCLUDE MID-BANK ZONE BETWEEN TOP OF
TOE STABILIZATION AND EXISTING TOP OF BANK (NEW FILL AREA)
ESTIMATED REPAIR LENGTH = 105'
LENGTH OF TOE STABILIZATION= 95'
APPROXIMATE DISTURBED AREA = 0.05 ACRES
BEFORE YOU DIGI
CALL 1800-632-4949
N.C. ONE-CALL CENTER
ITS THE LAWI
III III 111111110110 1,
,?y9 ?FNQINE??.? A,
C
'' Io. 11, 1P?`
u"
wz
Q
Eizm
wx
?za
uUzuz
z I
o<5
jay
?t7a
zQ
00
Za
wh
Z z
W 0
0
O Q
U
z 3:
0
O
Z = U
Q
F Q
Q ? ?
Q3
8
.
og?em??
Z
?a
aUQ
?a
Qw
Q?
?w
w0
?: a
00
a
SHEET
C4
n
n
r
0

L
L
u
CONSTRUCTION SEQUENCE:
1. Obtain NCDENR, USACE, & local "'authority approval for construction. The Contractor
must strictly adhere to the conditions of the U.S. Army C.O.E. & the NCDENR DWQ
as set forth in the 404 & 401 permits.
2. Notify NCDENR (Land Quality Section) if necessary, ten days prior to construction.
3. Locate existing utilities on site. Coordinate access, staging area
and temporary stockpile areas with Owner and Engineer. Engineer to identify and mark
"limits of disturbance" within channel
4. Install temporary sediment & erosion control measures, access roads, channel access,
staging area, and temporary facilities.
NOTE: All installed temporary sediment and erosion control measures will be inspected
weekly or after a major rainfall event (> 0.5 inches) by the Contractor. Upon
inspection, any necessary repairs will be performed by the Contractor.
5. Clear and grub in required areas for stream repair. Remove and stockpile topsoil
in areas to be excavated. Stockpile In areas as Directed by
Owner / Engineer. Surround Stockpile Areas with 2 Rows of Silt Fence.
6. Perform stream bank repairs as shown on plans and directed by engineer.
Install toe stabilization as directed by the engineer at the
time of construction. Contractor shall not cross "limits of disturbance"
without prior approval of the engineer.
7. Stabilize repaired bank zones (lower, mid-, and upper) as shown in details. Apply
temporary erosion control seeding measures to disturbed areas as final grading is
reached. Re-distribute topsoil, augment as necessary to meet planting specifications.
8. Perform tree and shrub planting as specified. Engineer to be notified prior
to planting observation to approve planting bed conditions and plant materials.
Tree and Shrub plantings may be delayed until Fall season with approval of owner & Engineer.
9. Apply permanent seeding measures. Remove temporary sediment & erosion
control measures including construction entrance (if necessary).
10. Coordinate for walk-thru inspection with Owner, Engineer, and Agency
Representatives.
11. Plantings shall be made during Fall season.
ALL SURFACES OF REPAIRED FILL AREA-
TO RECEIVE EXCELSIOR MATTING
INSTALL EXCELSIOR MATTING PER SPECS
AND MANUFACTURERS RECOMMENDATIONS
BACKFILL W/ COARSE (BED) MATERIAL-
AND MIN. 12" VEGETATIVE SUPPORT SOIL
APPROXIMATE --)
REPAIRED BANK &
CHANNEL LOCATION
REMOVE EXISTING DEPOSITS
& UTILIZE AS BACKFILL
MENSION AS SHOWN ON SHEET C4
3' TO 4' FOR UPPER REACH
5' TO 7' FOR LOWER REACH
EMBED FOOTER ROCK
ONE ROCK THICKNESS
MIN. 2' TO 4'

0

VARIES
MAX. 1.5:1
[EXISTING GRADE
(ERODED & FAILED BANK)
OVER-EXCAVATE LOOSE MATERIAL m TOE
& BACKFILL W/ COARSE (BED) MATERIAL,
WRAPPED W/ NON-WOVEN GEOTEX-nLE FABRIC.
FOOTER ROCKS
?W..
U"
Wz
a:
zz-
w : II
z
z?!
VUZ?_
0¢=
..> >
lac
'Z
Qa?
-w?
m?
z?
? n
w`
G
?a
a
r.
Z
0
Q
0
Q
Z
C
Q
Q
a
PROPOSED REPAIRED -'
TOE OF SLOPE g $
R

BANK REPAIR w

U a-/

NOT TO SCALE Z
Z) W
127
L
BANK REPAIR NOTES: U
1
/
1. INSTALL TOE STABILIZATION, HEIGHT AND LOCATION AS SHOWN ON SHEET C4. _
N
Z Z
2. DEPTH AND EXTENTS OF UNDERCUT TO BE DETERMINED BY ENGINEER AT 0 -k+ m
1
TIME OF CONSTRUCTION. 5 C)
U_J
3. LOWER BANK ZONE TO BE CONSTRUCTED USING RIVER BED BORROW
MATERIALS AS APPROVED BY THE ENGINEER. MID-, AND UPPER BANK ZONE C' /
TO
?S 0

BE CONSTRUCTED USING OTHER APPROVED MATERIALS. Z 0

EL
0
4. BANK REPAIRS TO BE BENCHED INTO EXISTING FAILED SLOPE AS

R AT THE TIME OF CONSTRUCTION T/
SEAL
24993 10 U
'
.
DIRECTED BY THE ENGINEE
:a; 5HEET
C5

r
J
1
1
1
SHRUBS
EX15TING
FROM EX15TING ROAD
2'-3' COARSE AGGREGATE
(RAILROAD BALLAST)

G' HUMP TO DIVERT R
PROM EXISTING ROAD
o
Do
5PEGE5 COMMON NAME TOTAL # 51ZE FEMARK5
CARPINUS
CAROLINIANA AMERICAN
HORNBEAM TBD BARE ROOT/POTTED REPAIR AREA
HAMAMELIS
VIRGINIANA AMERICAN
WITCHHAZEL TBD BARE ROOT/POTTED REPAIR AREA
ALNUS
SERRULATA BROOKSIDE
ALDER TBD BARE ROOT/POTTED REPAIR AREA
LEUCOTHOE
FONTANESIANA HIGHLAND
DOGHOBBLE TBD BARE ROOT/POTTED REPAIR AREA
SAUX NIGRA BLACK WILLOW TBD BARE ROOT/POTTED REPAIR AREA
CORNUS AMOMUM SILKY DOGWOOD TBD BARE ROOT/POTTED REPAIR AREA
SALIX SERICEA SILKY WILLOW TBD BARE ROOT/POTTED REPAIR AREA
NOTE:
SHRUB SPECIES TO BE RANDOMLY INTERMIXED ON 5'X5SPACING
UTILIZING AT LEA5T 3 OF THE 7 SPECIES LISTED ABOVE. MATERIAL
SOURCE AND DESIRED 5U85TATIONS TO BE APPROVED BY DESIGNER.
1 2 3
Open planting Place bare-root Clo5e hole with
hole with 5eedhn3 in hole - Shovel or Auger-
Shovel or Auger root collar at no air space
surface around roots
NOTES:
1. A STABILIZED PAD OF CRUSHED STONE SHALL BE LOCATED WHERE
TRAFFIC WILL BE ENTERING OR LEAVING A CONSTRUCTION SITE TO OR
FROM AN EXISTING ROAD.
2. STONE TO BE 2 - 3 INCH WASHED STONE RAILROAD BALLAST.
3. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL
PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC STREETS
OR EXISTING PAVEMENT. THIS MAY REQUIRE PERIODIC TOP DRESSING
WITH ADDITIONAL STONE AS CONDITIONS DEMAND AND REPAIR AND/OR
CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT.
4. ALL SEDIMENT SPILLED, DROPPED, WASHED ORTRACKED ONTO PUBLIC
STREETS MUST BE REMOVED IMMEDIATELY.
5. WHEN NECESSARY WHEELS MUST BE CLEANED TO REMOVE SEDIMENT
PRIOR TO ENTERING A PUBLIC STREET, WHEN WASHING 15 REQUIRED,
IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE
WHICH DRAINS INTO AN APPROVED SEDIMENT BASIN.
EXACT LOCATION OF TEMPORARY CONSTRUCTION
ENTRANCE TO BE DETERMINED AT PRE-CONSTRUCTION
MEETING
STABILIZED CONSTRUCTION ENTRANCE
(NOT TO SCALE)
EXISTING CHANNEL BED
EXISTING EDGE OF WATER
C)_o 00? o0z? y? ?gb
? a VV CY
EX15TING FAILED
TOP OF BANK
CONTRACTOR TO CUT -
ACCESS RAMP TO
SLOPE AS NEEDED FOR
EQUIPMENT ACCE55
MINIMUM 12' LAYER CLA55'A'-
RIPRAP WITH MIN. 12 OZ. WOVEN
GEOTEXTILE FABRJC UNDERLAIN
PLANTING DETAIL
(NOT TO SCALE)
EXISTING TOP OF BANK NOTE: CONTRACTOR TO REFRESH
STONE LAYER AND AUGMENT
CONTRACTOR TO CUT AS NECESSARY TO REDUCE
ACCESS RAMP TO EROSION AND SEDIMENTATION
SLOPE AS NEEDED FOR _
EQUIPMENT ACCESS
LAY BACK SIDE SLOPES
OF ACCESS TO STABLE
GRADE
EXISTING FAILED BANK-.-
MATERIAL TO BE REMOVED
EIXI5TING CHANNEL BED
PLAN CHANNEL ACCESS DETAIL
(NOT TO SCALE)
00
_-1 I
L IF, ? G
MINIMUM 12' LAYER
CLA55'A' RIPRAP
PROFILE
MINIMUM 12 OZ. WOVEN
GEOTEXTILE FABRIC
}
A*: 1'17'
Ir?
SEAL
24993,
Nat.
?z
D E.I Z
~z
e Uzi'.
?o
z
Qa
wF
z`
c
C7
zr
w"
L
b"
Cr
r_
Z a
U
Q

c
Q
c
C
iQ

z U
Q z N
U z Q
0 to
(F) 0
0
LU
SHEET
C6

r7i
?P
P
NOTE5:
9" STFFI ANSI F
51 LT FENCE
I. FILTER BARRIERS SHALL BE IN5PECTED
IMMEDIATELY AFTER EACH RAINFALL AND
DAILY DURING PROLONGED RAINFALL.
REPAIR 5HALL BE MADE A5 NECE55ARY.
2. FABRIC 5HALL BE REPLACED PROMPTLY
IF FOUND TO BE IN D15REPAIR.
8' MAX FOR STD. STRENGTH FABRIC
WITH WIRE ME5H REINFORCEMENT
nQ
5YNTHETIC
FILTER FABRIC SHALL BE
BACKFILLED A MIN. OF 8"
3. SEDIMENT DEPOSITS SHALL BE REMOVED
AFTER EACH 5TORM EVENT AND WHEN
DEP051T5 REACH APPROXIMATELY 1 /3
HEIGHT OF BARRIER.
5YNTHETIC FILTER FABRIC
ATTACHED TO P05T5 WITH
APPROVED FASTENERS. PLACE
ON UPHILL 51DE OF FENCE.
18" GROUN
MAX.
__c 1 88"1 -
EXCAVATE 8"x8" TRENCH UP5LOPE ALONG LINE
OF POST5. EXTEND FILTER FABRIC INTO TRENCH,
BACKFILL TRENCH AND COMPACT 501L
P05T
SYNTHETIC
FILTER
FABRIC
TEMPORARY SEEDING
General 5PEC1 NCATI ON5
Areas where no substantial or significant progress is made for
more than 15 days should be temporarily seeded as
follows. All areas should be seeded, mulched, and tacked.
Incidental grading shall not constitute substantial or significant
progress in construction activity. 5eedmg and mulching shall
be done immediately following construction. All disturbed
areas shall be dressed to a depth of 8 inches. The top
3 inches shall be pulverized to provide a uniform seedbed.
viz
o ?iz
.?w L
V1 V
?z
z?
?.11>
?a
(nz;
z
a?
Q? F
z?
oa
zCr
z
0
Q
Seeding
Seeding Dates
May l -Aug. 15
Aug. 15 - May I
5eedmg 5pecie5
German Millet
Rye (grain)
Rate (Ibs/acre)
40
GO
5oil Amendments
Follow recommendations of soil tests or apply 2,000 Ibs/acre
ground agricultural limestone and 750 Ibs/acre 10-10-10
fertilizer.
Mulch
Mulching shall consist of small grain straw applied at a rate
of 70 Ib5./1000 sq.ft. Mulched areas shall be mechanically
tacked in place (or other approved tacking method).
No asphalt shall be used for tacking. Use lute, excelsior
matting or similar material to cover exposed areas of
concentrated flow.
Maintenance
Inspect and repair mulch frequently. Refertdize and reseed as
required to maintain vigorous temporary vegetative cover
during construction.
CA
its
;O ti.
q 9{.q
SEAL
2^9,93 ?v

c
Q
C
? q
50 xRev
J
W/
z
0?
z?
00
W
SHEET
C7
u?rwr?.!R'.y
t
F I L
(1 Il w .. _

f-

i

? ? McGill
ASSOCIATES

CONSULTING ENGINEERS
ASHEVILLE,NORTH CAROL

IA
STREAM REPAIRS & BANK STABILIZATION PLAN FOR
Lower Watauga Site
The Ponds Subdivision
Watauga County, North Carolina
AR ?A
SEAL
3
Prepared for
WATAUGA COUNTY
r? 249
Prepared by:
m McGill
ASSOCIATES
October 2005
In conjunction with:
Soil & Environmental Consultants, PA
Lower Watauga The Ponds Subdivision -
' Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
1. PROJECT PURPOSE & DESCRIPTION
The purpose of this project is to stabilize and/or repair eroded and unstable stream banks
' along the Watauga River that were impacted by flood flows from Hurricanes Frances and
Ivan in September of 2004. The severely eroded stream banks consist of exposed soil on
moderate to steep slopes, which, if transported during another high flow event, could
' block downstream culverts and bridges as well as cause increased erosion and
sedimentation in vulnerable High Quality waters. As desired by the landowners and
' charged to us by Watauga County, NC, the proposed design is intended to reconstruct the
damaged bank as "close as possible" to the original pre-disturbance conditions. The
continued sedimentation occurring from this damaged site is an ongoing impact to the
¦ downstream waters and its careful, quick repair is critical to protecting stream resources.
The work described in this Stream Repairs and Bank Stabilization Plan (Repair Plan) is
urgent and compelling work under the National Resource Conservation Service (NRCS)
Emergency Watershed Protection (EWP) program to protect existing property and
structures. NRCS is the funding agency and Watauga County / Watauga Soil and Water
Conservation District (SWCD) is the sponsor and responsible party for the project. Work
on the site consists of repair and stabilization efforts only, and is not considered natural
channel restoration or enhancement work. However, some methods and approaches
' utilized in the proposed repair are routinely applied in natural channel design efforts due
to their ability to protect channel banks from shear stresses and the resultant erosion.
All work in or near surface waters will be supervised by trained personnel from both
McGill Associates and Soil & Environmental Consultants (S&EC). This site is one of
two damaged sites selected for repair within Watauga County.
' 2. SITE DESCRIPTION
' Lower Watati?a Site The Ponds Subdivision - Watauga River (B. Tr, HOW Waters) -
The repair site is approximately 105 feet in length and is located along the Watauga River
in Watauga County, NC. This area is located off The Pond Road between the residences
' of Ms. Cynthia Weathers (262 The Pond Road) and Mr. Frank and Mrs. Eva Szollosy
(272 The Pond Road). Please refer to repair plans for photographs, mapping, imagery,
and details of existing site conditions.
' Approximately 105 feet of the left channel bank (left and right are referenced while
looking downstream) was severely damaged through bank erosion and soil loss. The
repair is located on property owned by Ms. Cynthia Weathers and Mr. Frank and Mrs.
Eva Szollosy.
' The stream bank along the repair reach is near vertical in some locations. A significant
portion of the material required to repair the area is available via deposits on site, but a
significant portion of the required borrow material will have to be hauled to the site.

H

L

n

E

I
1

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Access to the site is not an issue since it is located off The Pond Road. The material
drop-off access point is between Ms. Cynthia Weathers and Mr. Frank and Mrs. Eva
Szollosy's residences. The in-stream access point will be from the end of The Pond
Road, next to the residence of Ms. Ann Imler. Utilities must be located and marked by
contractor prior to construction. The disturbed area for the proposed repair and
stabilization is 0.05 acres, and is exempt from an Erosion Control Permit from Land
Quality. The Lower Watauga The Ponds Subdivision site work described in this plan
will need to be permitted by the U.S. Army Corps of Engineers (Section 404 permit) and
the NC Department of Environment and Natural Resources, Division of Water Quality
(Section 401 Water Quality Certification).
3. TECHNICAL REPAIR DESCRIPTION
In October 2005, members of our design team visited the repair site to gain an
understanding of current site conditions and perform a general site characterization.
While on site, we observed characteristics of the site and surrounding area, verified
surface and channel flow conditions, and observed existing property boundaries, select
utilities, site accessibility, and existing water conveyance structures. During this process,
we observed the exposed eroded bank along the repair reach (which was caused by the
hurricanes) to typify the failed bank slope, materials, vegetation, and general site
conditions.
While on site, we also observed existing channel banks immediately upstream and
downstream of the repair area as well as the existing channel bank on the opposite side of
the watercourse. We collected select site data, to locate the extent of the damage and
characterize the existing conditions along the repair reach. We photographed the project
site and prepared field notes for use in the preparation of our design.
Using the data collected during our field visit, we developed a rough site sketch defining
existing conditions with annotated hand notes, descriptions, and repair recommendations.
These notes were later refined for use in the development of our repair "concept" for the
site roughly defining the location, size, and type of modifications and features proposed
for construction at the site.
Using the above data, we developed the Proposed Repair Plan including a plan view,
typical repaired bank cross-sections, construction details for typical site features,
technical construction specifications, and planting recommendations for the
recommended repair.
4. DESIGN CONSIDERATIONS
A range of possible repair alternatives for the Lower Watauga Site The Ponds
Subdivision were considered. These repair alternatives included: 1) Repair-in-Place
3
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
t Watauga County McGill Associates, P.A.
Only, 2) Repair-in-Place augmented with In-Stream Structures, 3) Stream Restoration -
' "Natural Channel Design."
As our understanding of this site has increased, and in an effort to streamline the
approach to repairs, we further developed these repair alternatives. In our design
development, we strived to utilize techniques which would be simple and understandable
to a "typical" general contractor (reducing the need for specialty contractors) and which
' could be easily modified or refined in the field by the designer (or contractor) based on
site conditions encountered during construction. It was also our intent that repair and
stabilization methods would be constructed with commonly used and readily available
t construction materials.
The recommended repair has been designed with robust methods to withstand typical
' channel discharges and erosive channel forces. One commonly observed approach to
such bank repairs includes a complete lining of repaired banks with large boulders or
' riprap. It is our opinion that such an approach would be undesirable for three main
reasons. 1.) These repairs do not take into account the primary reason for the damage in
the first place, that of excessive shear stresses on the bank and tend to serve as a "band-
aid" approach to bank repairs. 2.) Such repairs utilize excessive volumes oi rock
resulting in considerably high repair costs. 3.) The placement of large volumes of rock
for continuous lengths in effect "armors" the banks and fails to provide the desired
' (reconstructed) habitat that previously occurred naturally within the system (boulder,
cobble, gravel substrate materials) bed and banks. Such habitat is key to a variety of
aquatic species.
' Our selected repair alternative for the site includes repairing the failed bank back to its
pre-disturbance location (through fill placement) and augmenting the repair with toe
' stabilization. The proposed repair plan calls for the utilization of off-site borrow
materials (where necessary), including riverbed borrow consisting of sand, gravel,
cobble, and small boulders, for the reconstruction of the lower bank zone. Elevations
' above the lower bank zone will be constructed utilizing varying fill materials including
both riverbed borrow and other suitable borrow sources.
' Based on the observed (and measured) condition of the failed bank and the amount of
disturbance that has occurred, the bank repair alone (without supplemental toe
stabilization) would likely be insufficient to withstand future flood flows. The
' installation of toe stabilization is necessary along the reach in areas of excessive scour to
tie-in to existing stabile banks.
' This approach to bank repairs will improve the overall potential for the success of the
repair. The installation of toe stabilization will protect the channel bank with a
significantly smaller rock volume (when compared to bank lining) thereby reducing
overall repair costs. One additional benefit to this type of repair is the replacement of a
natural (less structural) repair that is more appropriate for the reach and generally more
aesthetically desirable.

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October
' Watauga County McGill Associates,
t 5. PROPOSED REPAIR PLAN
During our evaluation of the site, infrared imagery (2004) was used to estimate the pre-
disturbance location of the "channel bank." This location was then used to develop a
repaired bank location as shown in our Repair Plan. A typical cross-section for the repair
was then developed to depict proposed repair characteristics including but not limited to
' slope and slope break, stabilization methods, and planting recommendations.
' NOTES.
1. Our repair plan is designed to repair and stabilize the bank along the subject
reach and is not considered natural channel restoration or enhancement work. In
addition, while consideration was given to select characteristics of the channel, it
should be recognized that a complete morphological evaluation of the repair
reach was not performed nor does this report (or repair) represent such an
evaluation. However, some methods and approaches utilized in the proposed
repair are routinely applied in natural channel design efforts due to their ability>
' to protect channel banks from shear stresses and the resultant erosion.
2. It should be noted that this "channel bank" location and the resultant "channel
width" is not to be considered the bankfull channel edge or bankfull width (as is
routinely described in Natural Channel Design Methodology), nor should it be
considered the "edge of water", as this location will differ for various reasons. It
' is however, a rough interpretation (estimate) of the pre-existing channel bank
location based on the best available, pre-damage site and mapping data,
discussions with landowners, observation of undisturbed channel segments
' immediately upstream and/or downstream of the site, and experience on similar
projects.
3. Due to previous alterations of the channel, channel banks, widths, and slopes
have been modified considerably. In turn, the identification of the "natural"
condition (dimension, pattern, and profile) of the channel is often difficult or
' indeterminate.

As shown on the attached repair plan and design details, we recommend that the repaired
slope be reconstructed and backfilled with excavated channel material (or deposited
material recovered from the floodplain), available on-site or off-site earth fill, and in
some cases imported stone aggregate. The location of the toe of the repaired slope will
be field determined to allow for the development of a typical repair application along the
reach. Our Repair Plan calls for the incorporation of a single repair option. See the
proposed repair cross-section depicted in the Repair Plan.
I I
Lower Watauga The Ponds Subdivision -
October 2005
' Stream Repairs & Bank Stabilization Plan
Watauga County McGill Associates, P.A.
Bank Repair
' For the bank repair, our design has divided the repaired bank into three bank
zones, Upper, Mid-, and Lower for the purposes of slope, stabilization measures,
and planting recommendations. The Lower Bank Zone will tie into the Mid-Bank
Zone as depicted on the Repair Plan.
' Grading & Stabilization
We recommend that the Lower Bank Zone be graded (or constructed) with the
previously described materials at a slope not in excess of 1H:1.5V to the
approximate elevations described in the repair cross-section. As this zone is
within the "active channel", we recommend that it have toe stabilization and
backfilled with coarse (bed) material. This zone should be over seeded with the
appropriate temporary and permanent grasses for the season above the toe
' stabilization.
The Mid-Bank Zone should be similarly graded (or constructed) with the
previously described materials at a slope not in excess of 1H:1.5V td the
approximate elevations described in the repair cross-section. As this zone is out
of the "active channel" we recommend that it be lined with excelsior (wood fiber)
erosion control matting (or equivalent), planted with select shrubs (bare root or
containerized specimen) of the species and density described in the planting
details. This zone should also be similarly over seeded with erosion control
' grasses.
NOTES.
' 1. The repair cross-section shown is used to describe the typical repair
cross-section.
2. The existing top of bank and the vertical and horizontal distances depicted
in the repair cross-section are typical, however, there will be some
variation and should therefore be verified and adjusted as necessary along
the length of the repair reach.
' The Upper Bank Zone should be graded (or constructed) with the previously
described materials such that it blends the Mid-Bank Zone with the surrounding
floodplain grade to the approximate elevations described in the repair cross-
section. As this zone is out of the "active channel", we recommend that it be
lined with excelsior (wood fiber) erosion control matting (or equivalent), and
planted with select shrubs (bare root or containerized specimen) of the species and
' density described in the planting details. This zone should also be similarly over
seeded with erosion control grasses.

H
11
u
n
n

I I
C

E

I
1
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
Watauga County McGill Associates, P.A.
Toe Stabilization Measures
Toe stabilization will be constructed using rows of large boulders along the newly
defined toe of the repaired bank. Footer, rocks (boulders) and toe rocks (boulders)
will be installed as shown in the details. The landward side of the toe stabilization
will be lined with a non-woven geotextile fabric and backfilled with suitable
material (off-site river bed borrow materials or other available coarse aggregate if
approved by the designer). This material combination will improve stability and
reduce the potential for future scour and piping (and resulting failure).
The designer will determine the exact location and extent of toe stabilization
measures at the time of construction. However, areas typically in need of such
supplemental protection include areas of existing scour (where sub-grade
reconstruction would be difficult), near existing large diameter trees (having
experienced undercutting) which are to be maintained, and at the upstream and
downstream repair limits (where tie-in to undisturbed banks is needed). For
planning purposes, we have estimated that 95 linear feet of the repaired bank will
require toe stabilization measures. A detail of a typical toe stabilization structure
is shown in the Construction Drawings.
Bank Plantin&s
A riparian buffer area will be established along the repaired channel bank as part
of the proposed Repair Plan. The riparian zone will include all three Bank Zones
(Lower, Mid-, and Upper). These areas will be seeded and planted with the
appropriate native riparian vegetation and will provide channel stability and
treatment of surface waters traveling laterally through the buffer.
Species will consist primarily of native shrubs. The repaired bank will be planted
with the appropriate channel bank species in the form of bare-root seedlings (and
containerized plants), and transplants where available. Native shrubs that are
available elsewhere on-site will be removed with as much of the root ball intact
and transplanted adjacent to the restored channel or in the floodplain. The
majority of the planting efforts (with the exception of site transplants) should be
performed in the fall season to increase survivability. Vegetation will be supplied
by locally identified plant sources or purchased from local, reputable nurseries.
Other sources, outside of the local area, may be used depending on the availability
of plant material and as approved by the designer.
' Shrub species will be planted at a spacing of 6 ft. by 6 ft. to achieve a desired
planting density of approximately 1,200 shrubs per acre, in order to improve
potential for the desired 5-year survivability. The planting plan will include a
' minimum of three of the seven shrubs listed in the planting schedule.

Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
' Watauga County McGill Associates, P.A.
A representative of S&EC will be on site to observe and direct planting efforts
associated with the buffer restoration. The designer must approve substitution of
shrub species in advance.
' Temporary and/or permanent seeding measures (German millet, rye grass, or the
most appropriate erosion control grass as dictated by the season or region) will be
applied to areas disturbed during grading operations to allow for localized
' stabilization while riparian species establish themselves.

I
C

r
Construction Drawings for the proposed Stream Repairs and Bank Stabilization Plan
including the proposed repairs, repair cross-section, structure details, erosion and
sediment control details, and a planting schedule and details are attached. Technical
Specifications are also attached.
6. REGULATORY REQUIREMENTS
401 WATER QUALITY CERTIFICATION (Mandatory Requirement based on exyected
Certification conditions) - The following mandatory conditions apply to all repair sites:
1. Erosion & Sediment Control Practices
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.
' 2. 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
1 8
I
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
' Watauga County McGill Associates, P.A.
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.
' 3. 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.
4. 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.
5. 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, unless authorized under Division of Land Resources Erosion
and Sediment Control approval. 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.
6. 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.
7. The channel must 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. Streambed materials are unstable
in flowing-water situations and are unsuitable for bank stabilization. Stream
' dredging has catastrophic effects on aquatic life and disturbance of the natural

Lower Watauga The Ponds Subdivision -
October 2005
Stream Repairs & Bank Stabilization Plan
' Watauga County McGill Associates, P.A.
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.
8. 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 streambed materials are available.
' Berms are not permitted because they block the floodplain, constrict and
accelerate flood flows, and often fail or impede drainage during large flood
events.
' 9. 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.
ment should be operated from the bank whenever possible ? All
ui
e
Heav
10
' p
q
y
.
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.
11. As long-term stream stability is a concern with this type of work, it is strongly
' recommended that woody vegetation be established along stream banks where
possible. Any riparian vegetation planting should be performed in accordance
with the Guidelines for Riparian Buffer Restoration.
' (http//h2o.ennstate.nc.us/wrp/pdf/buffers.ndf )
12. Monitoring - The Permittee shall examine the stabilization work done under
this Certification on an annual basis for three (3) years following the
' completion of the restoration efforts. This field evaluation should note the
condition and stability of the measures installed and how well the repair is
holding up. A written report must be provided to DWQ's Asheville Regional
' Office by June 0 of each year. The report must describe inspection results,
include digital photographs, list the date of inspection, and describe any
' needed repairs or corrections.
13. The Permittee will provide on-site supervision of stability work including, but

' not limited to bank re-sloping, in-stream structure placement, and riparian
trained individual
riatel
t b
h
bli
.
y
y an approp
men
s
zone re-esta
14. If pasture along the stream is to be used for grazing, the Permittee must
' inform the appropriate landowners that cattle should be prohibited from
damaging riparian areas and from de-stabilizing the stream banks and channel.
10
Lower Watauga The Ponds Subdivision -
Stream Repairs & Bank Stabilization Plan October 2005
' Watauga County McGill Associates, P.A.
15. Diffuse Flow - All constructed storm water 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.
' 16. Water Quality Certification Notifications - The Permittee must provide a copy
of this issued Water Quality Certification and attached cover letter to each
property owner where the approved work will be performed.
' 17. Turbidity Standard - The turbidity standard (Nephelometric Turbidity Units)
shall not be exceeded as described in 15A NCAC 2B .0200. Appropriate
sediment and erosion control practices must be used to meet this standard.
i
Finally, pending receipt of a final 404 Permit and 401 Certification, copies of these issued
documents and the associated conditions and comments provided by commenting
agencies (when available) will be included in all final contractor packages that will be
used for construction of the repairs. All regulatory requirements and the measures
outlined in this document will be fully discussed with the chosen contractor and the
inspectors for McGill Associates and S&EC before any construction begins. During
actual construction, inspectors will direct contractors to observe and apply good
construction practices and the requirements described in this document.

11
i
i
i
?
?? ? ?
?
1
f ? _ i

I
? ??

1
?
3
?? t }?
''
r
;.
- 3.
1

TECHNICAL SPECIFICATIONS
FOR
WATAUGA COUNTY EWP
LOWER WATAUGA SITE
THE PONDS SUBDIVISION
STREAM REPAIRS & BANK
STABILIZATION PROJECTS
Q: ? 6
2499
D. C
nwol 3i
OCTOBER, 2005
Prepared for:
Watauga County, NC
i
TECHNICAL SPECIFICATIONS TABLE OF CONTENTS
TITLE PAGE
TABLE OF CONTENTS
SECTION 1 - GENERAL REQUIREMENTS 1
1.1 SECTION INCLUDES 1
1.2 SUMMARY OF WORK 1
1.3 WORKFORCE EXPERIENCE 1
1.4 SPECIFIC EQUIPMENT REQUIREMENTS 1
1.5 MEASUREMENT AND PAYMENT 1
SECTION 2 - TEMPORARY FACILITIES 1
2.1 SECTION INCLUDES 1
2.2 MEASUREMENT AND PAYMENT 1
2.3 TEMPORARY SANITARY FACILITIES 1
2.4 BARRIERS 1
2.5 TRAFFIC CONTROL 1
2.6 STAGING AREA 1
2.7 COORDINATION WITH OWNER AND OTHER
CONTRACTORS 2
2.8 PROTECTION OF EXISTING FACILITIES,
STRUCTURES, AND SERVICES 2
2.9 PROTECTION OF INSTALLED WORK 2
2.10 PROGRESS CLEANING & WASTE REMOVAL 2
2.11 EROSION CONTROL 2
2.12 FINAL CLEANING 2
SECTION 3 - QUALITY CONTROL 3
3.1 SECTION INCLUDES 3
3.2 MEASUREMENT AND PAYMENT 3
3.3 REFERENCES 3
3.4 CONSTRUCTION OBSERVATION 3
3.5 PLANTING OBSERVATION 3
SECTION 4 1- SITE PREPARATION 4
4.1 SECTION INCLUDES 4
4.2 MEASUREMENT AND PAYMENT 4
4.3 UTILITY LOCATION AND PROTECTION 4
4.4 SEDIMENTATION AND EROSION CONTROL 4
4.5 CONSTRUCTION LAYOUT 4
4.6 CLEARING, GRUBBING, AND STRIPPING 4
4.7 DEWATERING 4
SECTION 5 EXCAVATION 5
5.1 SECTION INCLUDES 5
5.2 MEASUREMENT AND PAYMENT 5
5.3 REFERENCES 5
5.4 PREPARATION 5
5.5 EXCAVATING 5
5.6 PLANTING PREPARATION 5
5.7 TOLERANCES 5
SECTION 6 - FILLING, BACKFILLING AND COMPACTION 6
6.1 SECTION INCLUDES 6
6.2 MEASUREMENT AND PAYMENT 6
6.3 REFERENCES 6
6.4 FILL MATERIALS 6
6.5 PREPARATION 6
6.6 BACKFILLING, FILLING, AND SURFACE
PREPARATION 6
6.7 COMPACTION AND QUALITY CONTROL 6
6.8 PROTECTION OF FINISHED WORK 7
6.9 TOLERANCES 7
SECTION 7 - CHANNEL PROTECTIVE LININGS AND TOE
STABILIZATION 7
7.1 SECTION INCLUDES 7
7.2 MEASUREMENT AND PAYMENT 7
7.3 REFERENCES 7
7.4 GENERAL 7
7.5 MATERIALS 7
7.6 TOE STABILIZATION 8
7.7 CHANNEL PROTECTIVE LININGS 8
7.8 SLOPE PROTECTION 9
SECTION 8 - STREAM BANK PLANTING 10
8.1 SECTION INCLUDES 10
8.2 MEASUREMENT AND PAYMENT 10
8.3 REFERENCES 10
8.4 GENERAL 10
8.5 LIVE STAKES 10
8.6 PLANT SUBSTITUTION 10
8.7 PLANTING PREPARATION 10
8.8 STREAM BANK PLANTING 10
8.9 PLANTING PERIODS 10
8.10 REMOVAL OF NUISANCE VEGETATION 10
8.11 WATER FOR PLANTINGS 10
8.12 SUBMITTALS 11
SECTION 9 - BUFFER PLANTING 11
9.1 SECTION INCLUDES 11
9.2 MEASUREMENT AND PAYMENT 11
9.3 REFERENCES 11
9.4 GENERAL 11
9.5 CONTAINER GROWN PLANTS 12
9.6 BARE ROOT PLANTS 12
9.7 PLANT SUBSTITUTION 12
9.8 PLANTING PREPARATION 12
9.9 PLANTING PERIODS 12
9.10 REMOVAL OF NUISANCE VEGETATION 12
9.11 WATER FOR PLANTINGS 12
9.12 SUBMITTALS 12
SECTION 10 - PERMANENT SEEDING 13
10.1 SECTION INCLUDES 13
10.2 MEASUREMENT AND PAYMENT 13
10.3 REFERENCES 13
10.4 GENERAL 13
10.5 SEEDBED PREPARATION 13
10.6 SEEDING 13
10.7 SEEDING DATES 13
10.8 SOIL AMENDMENTS 13
11
i
14
10.9 MULCH 13 11.6 TEMPORARY SEEDING
SECTION 11 - SEDIMENT & EROSION CONTROL 14 SECTION 12 - SITE MAINTENANCE 15
11.1 SECTION INCLUDES 14 12.1 SECTION INCLUDES 15
2
11 MEASUREMENT AND PAYMENT 14 12.2 MEASUREMENT AND PAYMENT 15
.
11.3 REFERENCES 14
4 12.3 EXECUTION 15
11.4 MATERIALS 1
11.5 SILT FENCE 14

h.

1

', 111
SECTION 1 - GENERAL REQUIREMENTS
1.1 SECTION INCLUDES
General requirements and information related to the work including,
summary of work.
1.2 SUMMARY OF WORK
The Watauga County Stream Repairs and Bank Stabilization project
consists of the earthwork construction of repaired and stabilized
channel banks, toe stabilization, and/or planting of the repaired channel
banks and surrounding buffer area Refer to the Construction Drawings
and to these Specifications for project details.
1.3 WORKFORCE EXPERIENCE
The Contractor is required to have the appropriately experienced
personnel on-site to operate equipment and insure that the construction
sequence and installation procedures are followed as determined by the
Engineer. Contractor personnel should be familiar with stream repair
and bank stabilization techniques and the correct method of installing
these repairs.
1.4 SPECIFIC EQUIPMENT REQUIREMENTS
r

The Contractor is required to have at a minimum two excavators with
hydraulic thumbs during the entire course of construction unless
otherwise approved by the Engineer. The hydraulic excavators must be
of sufficient size to lift, manipulate, and install boulders larger than 5-
foot by'' 4-foot by 3-foot (a maximum of 6 tons).
1.5 MEASUREMENT AND PAYMENT
All measurement and payment for services performed shall be as
indicated in the PROJECT AGREEMENT. As such, they are not
defined in these technical Specifications.
END OF SECTION
SECTION 2 - TEMPORARY FACILITIES
2.1 SECTION INCLUDES
Required temporary facilities including site access, temporary sanitary
facilities, barriers, traffic control, construction staging area, Contractor
coordination, protection of existing facilities and installed work,
erosion control measures, and general site cleaning.
2.2 MEASUREMENT AND PAYMENT
See PROJECT AGREEMENT
2.3 TEMPORARY SANITARY FACILITIES
Provide and maintain required sanitary facilities and enclosures. No
permanent sanitary facilities exist at the project site.
2.4 BARRIERS
Provide barriers to prevent unauthorized entry to construction areas, to
allow for Owner and Engineer access to site, and to protect existing
structures and adjacent properties from damage due to construction
operations.
2.5 TRAFFIC CONTROL
Provide traffic control as required to protect the public safety.
Conform to all requirements of State, County, City, or local laws and
requirements for traffic control. Conformance with Contract
Documents does not relieve the Contractor from responsibility for
public safety. Construction operations may be underway on adjoining
portions of the site.
2.6 STAGING AREA
The Owner will designate an area for staging of Contractor's
equipment and construction materials for the duration of construction.
This area shall be maintained so as to provide a sightly appearance and
a safe working environment. No other area shall be used for this
purpose without the approval of the Owner.
Storage of oil or fuel shall be confined to the construction staging area
Refueling of all vehicles and equipment shall occur only in the staging
area Refueling of non-mobile equipment located outside of the staging
area will be allowed with Owner approval. No refueling shall occur
within fifty feet of the channel or any other surface water or wetland.
The Contractor shall take appropriate measures to ensure safe fueling
procedures are followed.
Contractor shall provide appropriate spill prevention measures. The
Contractor shall provide a spill containment plan for both the staging
area and the construction area The plan shall include prevention,
containment, and control of fuel or oil spillage from equipment storage,
refueling, maintenance, and operation on-site. The plan shall address
both mobile and non-mobile equipment used during construction.
Emergency spill cleanup equipment for oil and fuel spills shall be
stored on-site. The Contractor shall notify the Owner and all
applicable agencies within 24 hours of any spill.
Stream Repairs & Bank Stabilization Page 1 Technical Specifications
Watauga County Stream Repairs October 2005
2.7 C60RDINATI0N WITH OWNER AND OTHER
CONTRACTORS
Perform coordination with Owner and schedule work to ensure limited
disruption of daily operations. Obtain approval from Owner prior to
the disruption of any access to site utilities, structures, or locations.
Coordinate the disruption of any utility services without regard to
duratioln. Provide continuous representation/point of contact for
Ownerduring all site activities. Only access points approved by the
Ownershall be used during construction.
2.8 PROTECTION OF EXISTING FACILITIES, STRUCTURES,
AND SERVICES
The project vicinity, including existing access routes, will continue to
be used for daily operations by the Owner and by others throughout the
duration of the construction. The Contractor shall protect existing
facilities, structures, and services throughout the duration of
construction and provide special protection where specified in
individual specification sections. Provide temporary and removable
protection for existing structures and services.
Control activity in the immediate vicinity of facilities, structures, and
services to prevent damage. Any facility, structure, or services
disturbed or damaged, either intentionally or unintentionally, shall be
removed and reinstalled or repaired to the Owner's satisfaction.
Repairs to or replacement of facilities, structures, or services shall be
performed at the expense of the Contractor. Repairs and/or
replacement shall occur without additional cost to the Owner.
2.9 PROTECTION OF INSTALLED WORK
Protect installed work and provide special protection where specified in
individual specification sections. Provide temporary and removable
protection for installed work and products. Control activity in
immediate work area to prevent damage. Any installed work disturbed
or damaged, shall be removed and reinstalled or repaired to the
Engineer's satisfaction. Repairs to or replacement of installed work
shall bejperformed at the expense of the Contractor. Repairs and
replacement shall occur without additional cost to the Owner.
2.10 PROGRESS CLEANING AND WASTE REMOVAL
Maintain areas free of waste materials, debris, and rubbish. Maintain
site in a clean and orderly condition. Collect and remove waste
materials, debris, and rubbish from site daily and dispose off site.
Remove temporary utilities, equipment, facilities, and materials prior to
Final Application for Payment inspection. Restore existing facilities
used during construction to original condition.
2.11 EROSION CONTROL
Contractor shall be responsible for preventing erosion on the site and
sedimentation off the site. Methods shall be employed as
recommended in the North Carolina Erosion and Sediment Control
' Planning and Design Manual, latest edition.

2.12 FINAL CLEANING
Execute final cleaning prior to final project assessment. Clean site and
all installed work Remove waste and surplus construction materials,
rubbish, and construction facilities from the site.
END OF SECTION
Stream Repairs & Bank Stabilization Page 2 Technical Specifications
Watauga County Stream Repairs October 2005
SECTION 3 - QUALITY CONTROL
3.1 SECTION INCLUDES
Observation of construction operations and buffer and stream bank
planting.
3.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
3.3 REFERENCES
For products or workmanship specified by association, trade, or other
consensus, comply with requirements of the standard, except when
more rigid requirements are specified or are required by applicable
codes.
Conform to reference standard by date of issue on date of Contract
Documents, except where a specific date is established by code.
Section 6 (Filling, Backfilling, and Compaction) of these
Specifications.
Section, 8 (Stream Bank Planting) of these Specifications.
Section19 (Wetland and Buffer Planting) of these Specifications.
3.4 CONSTRUCTION OBSERVATION
The Owner has engaged the Engineer to observe construction
operations as required in these Specifications. Reports (either verbal or
written) shall be submitted concurrently to the Owner and Contractor,
indicating observations and indicating compliance or non-compliance
with Contract Documents.
Observation of construction operations does not relieve Contractor of
obligation to perform work to contract requirements. The Contractor
shall allow observation personnel access to materials and the
construction-site as required.
3.5 PLANTING OBSERVATION
The Owner has engaged the Engineer to observe stream bank and
buffer planting as required in these Specifications. Reports will be
submitted concurrently to the Owner and Contractor, indicating
observations and indicating compliance or non-compliance with
Contract Documents.
Observation of planting operations does not relieve Contractor of
obligation to perform work to contract requirements. The Contractor
shall allow observation personnel access to materials (see stream bank
plantings specified in Section 8) and the construction-site as required.
END OF SECTION
Stream kepairs & Bank Stabilization Page 3 Technical Specifications
Watauga County Stream Repairs October 2005

1

0
11

f7

SECTION 4 - SITE PREPARATION
4.1 SECTION INCLUDES
Site preparation shall consist of utility location and protection, clearing,
grubbing and stripping of the work area, and "construction of any
required temporary construction access routes and temporary sediment
and erosion control measures.
4.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
4.3 UTILITY LOCATION AND PROTECTION
The Contractor shall locate all existing utilities and mark them for
identification. Contractor shall provide means for protecting utilities
from any damage during site work. Repair of damaged utilities shall be
at the Contractor's expense. Coordination should be made with Owner
to locate and mark site specific utilities. NC ONE CALL (1-800-632-
4949)
4.4 SEDIMENTATION AND EROSION CONTROL
11
Contractor shall be responsible for preventing erosion on the site and
sedimentation off the site. Methods shall be employed as
recommended in the North Carolina Erosion and Sediment Control
Planning and Design Manual, latest edition.
The Contractor shall control sedimentation runoff with methods
approved by the Engineer during the course of construction of this
Project. Depending on the magnitude of the clearing and grubbing
associated with the project, an Erosion Control Plan may be required
Temporary erosion and sediment control measures shall be installed as
described in Section 11 (Sediment & Erosion Control). The Contractor
shall conform to all the rules, regulations, laws, and ordinances of the
State of North Carolina, and of all other authorities having jurisdiction.
4.5 CONSTRUCTION LAYOUT
The construction layout may include, but will not necessarily be limited
to, channel disturbance limits, earthwork limits, and appropriate
grading values. The Contractor is responsible for the construction
surveying and layout. The Contractor is required to have a laser level
or other equivalent equipment available on-site during the entire period
of construction.
4.6 CLEARING, GRUBBING, AND STRIPPING
Conform to applicable codes for environmental requirements, disposal
of debris, and erosion and sedimentation control as described above.
Coordinate clearing work with utility owners and operators as
described above. Establish a schedule for daily removal of debris from
the site. Debris may not be stockpiled on-site. Clear areas required for
access to site and execution of work. Remove trees, stumps, other
wood, metal, or rubble debris within work areas unless otherwise
directed by Engineer.
Remove stumps, main root ball, and all roots with a diameter greater
than 2 inches. Leave area in a clean and neat condition. Grade site
surface daily to control the direction of channelized flow and prevent
free standing surface water.
In areas where bank repairs will be implemented, the existing top six
inches of soil should be removed and stockpiled prior to excavation,
construction, or reconstruction efforts.
4.7 DEWATERING
Comply with all rules, regulations, laws, and ordinances of the State of
North Carolina, and of all other authorities having jurisdiction.
Provide, without additional cost to the Owner, all labor, materials,
equipment, and services necessary to make the work comply with such
requirements. Install all barriers, erosion and sedimentation control
devices, silt fences, and other measures as required to prevent off-site
sedimentation.
Grade and ditch the site as necessary to direct surface runoff away from
open excavations and subgrade surfaces. All water drained from the
Work shall be disposed of in a manner that will not result in undue
interference with other work or damage adjacent properties, other
surfaces, structures, and utilities. All water due to the dewatering
operation shall be legally disposed of in accordance with all applicable
State and federal regulations and other applicable regulations.
Under no circumstances shall fill be placed in excavations containing
standing water without approval of the Engineer.
END OF SECTION
Stream Repairs & Bank Stabilization Page 4 Technical Specifications
Watauga County Stream Repairs October 2005

1

J

11
SECTION 5 - EXCAVATION
5.1 SECTION INCLUDES
Provide all necessary equipment and labor to excavate for channel
restoration without damage or interruption of utility service.
5.2 MEASUREMENT AND PAYMENT
See PRQJECT CONTRACT
5.3 REFERENCES
Occupational Safety and Health Administration - Construction
Standards for Excavations, 29 CFR Part 1926.650-.652.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
5.4 PREPARATION
Locate, identify, and protect utilities from damage as described in
Section 4.3. Notify utility companies and coordinate for and/or install
protection of utilities.
5.5 EXCAVATING
Protect all utilities and structures that may be damaged by excavating
work.
In areas where stream and floodplain grading will be implemented, the
!existing sop six inches of soil should be removed and stored prior to
construction or reconstruction efforts.
Perform Work in accordance with Occupational Safety and Health
Administration (OSHA) - Construction Standards for Excavations, 29
CFR Part 1926.650-.652. Provide trench and excavation protection as
required. Slope banks with machine to stabilize the slope or flatten it
until shored. Grade top perimeter of excavation to prevent surface
water from draining into excavation. Where required to protect
utilities, perform excavation by hand.
Remove subsoil, boulders, and rock as directed by the Engineer.
Notify Engineer if subsurface conditions require excavation of larger
subsoil, boulders, and rock, and discontinue Work. Engineer may
direct adjustment in construction elevations. Adjustment of elevations
shall not be a basis for additional payment.
Correct areas over excavated in accordance with Section 6 (Filling,
Backfilling, and Compaction) and as shown in the Construction
Drawings. Stockpile select excavated material on-site for re-use in
backfill. Stockpile location shall be subject to Owner approval.
5.6 PLANTING PREPARATION
In areas where buffer planting will be implemented, the stockpiled
All areas where topsoil is distributed shall be disked or harrowed to
ensure soil aeration and to increase the surface roughness prior to
planting.
5.7 TOLERANCES
Top surface of channel protective lining (where applicable): Plus or
minus one inch from required elevations.
Top surface of fill, backfill, and topsoil: Plus or minus one inch from
required elevations.
END OF SECTION
topsoil and/or off-site topsoil (as required), should be distributed in
preparation for restoration planting operations as described in
SECTION 7 (Channel Protective Linings and In-stream Structures) of
these Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of four
(4) inches.
Specifications
Stream Repairs & Bank Stabilization Page 5 Technical Watauga County Stream Repairs October 2005

11

u

1

SECTION 6 - FILLING, BACKFILLING AND COMPACTION
b.l SECTION INCLUDES
Provide all necessary equipment and labor to perform filling,
backfillmg, and compaction necessary for construction of repaired
channel banks, and other site work as shown on the Drawings without
damage or interruption of utility service.,
Replacement of removed topsoil shall be as described in SECTION 5.6
(Planting Preparation) of these Specifications.
6.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
6.3 REFERENCES
ASTM D698 - Test Methods for Moisture-Density Relations of Soils
and Soil-,Aggregate Mixtures, Using 5.5 lb. Rammer and 12-inch Drop.
ASTM D1556 - Test Method for Density of Soil in Place by the
Sand-Code Method.
q.
ASTM 02922 - Test Methods for Density of Soil and Soil-Aggregate
in Place by Nuclear Methods (Shallow Depth).
ASTM D3017 - Test Methods for Water Content of Soil and Rock in
Place by Nuclear Methods (Shallow Depth).
ASTM D?487 - Classification of Soils for Engineering Purposes.
When the Specifications or Drawings differ from the requirements of
the abovg-referenced documents, the more stringent requirements shall
apply.
6.4 FILL MATERIALS
Soil excavated during construction and stockpiled may be re-used as
fill provided that it can be conditioned and compacted as specified.
Suppl"nt or replace excavated soils with ordinary fill as shown on
the Drawings and as needed to complete work. Fill for Lower Bank
Zone shall consist of off-site channel bed material from an approved
borrow source. Ordinary fill for Mid-Bank and Upper Bank Zones
shall be any soil classified as SM, SC, SP-SM, SP-SC, SC-SM, SP, or
SW under ASTM D2487 unless otherwise directed by the Engineer.
If soil excavated during cut operations is not re-used, it shall be
removed from the site to an appropriate disposal facility at no
additional charge to Owner. The Contractor shall be responsible for
the payment of all fees associated with transportation and disposal of
unusable materials.
Suitable borrow material may be available within the vicinity of the
project site but must be identified by the Contractor and approved by
the Eng"IFer.
6.5 PREPARATION
Compact subgrade to density requirements for subsequent backfill
materials.;, Cut out soft areas of subgrade not capable of compaction in
place. Backfill with ordinary fill material and compact to density equal
to or greater than requirements for subsequent fill material.
6.6 BACKFILLING, FILLING, AND SURFACE PREPARATION
Backfill areas to contours and elevations with unfrozen materials. Do
not backfill over porous, frozen, or spongy subgrade surfaces. Employ
a placement method that does not disturb or damage other work.
Make gradual grade changes. Blend slope into level areas. Place
backfill and fill in loose level lifts not to exceed six inches in thickness
before compaction.
Earth fill in repaired channel banks and other structures shall be placed
so as to meet the following additional requirements:
a. The distribution of materials throughout each zone shall be
essentially uniform and the fill shall be free from lenses, pockets,
streaks, or layers of material differing substantially in texture or
gradation from the surrounding materials.
b. Backfill areas to contours and elevations with unfrozen materials.
Do not backfill over porous, frozen, or spongy subgrade surfaces.
Employ a placement method that does not disturb or damage other
work. Place backfill and fill in loose level lifts not to exceed six
inches in thickness before compaction. Make gradual grade
changes. Blend slope into level areas.
c. If the surface of any layer becomes too hard and smooth for proper
bond with the succeeding layer, it shall be scarified parallel to the
axis of the fill to a depth of not less than 2 inches before the next
layer is placed.
d. The top surfaces of embankments shall be maintained
approximately level during construction, except that a crown or
cross-slope of not less than 2% shall be maintained to insure
effective drainage, and except as otherwise specified for drain fill
zones.
e. Repaired channel banks shall be constructed so that the slope of
the bonding surfaces between embankment in place and
embankment to be placed is not steeper than I foot horizontal to 1
foot vertical, unless otherwise specified on the Contract Drawings.
New embankment material shall be benched into existing slope as
shown on the plans. Short bench levels shall be formed to a slope
of 1 H:1 V or flatter, based on existing slope conditions as
determined by the Engineer at the time of construction, unless
otherwise specified on the Contract Drawings. Benching shall be
constructed in such a fashion as to inhibit the formation of
preferential planes of slope failure. The bonding surface of the
embankment in place shall be stripped of all loose material, and
shall be scarified, moistened and recompacted when the new fill is
placed against it as needed to insure a good bond with the new fill
and to obtain the specified moisture content and density in the
junction of the in-place and new fill. Any variation to this method
of tying new fill into the existing filled bank shall be determined
in the field at time of construction by the Engineer.
6.7 COMPACTION AND QUALITY CONTROL
For backfill operations, compaction shall be performed using tracked
equipment as directed by the Engineer. Compaction greater than that
provided by tracked equipment may be deemed necessary by the
Engineer based on-site or soil conditions. Provide compaction as
directed by the Engineer. Lift thickness shall not exceed 6".
Stream Repairs & Bank Stabilization Page 6 Technical Specifications
Watauga County Stream Repairs October 2005
6.8 PROTECTION OF FINISHED WORK
Protect finished work. Reshape and re-compact fills subjected to
vehicular traffic or damaged by erosion.
6.9 TOLERANCES
Top surffice of channel protection lining (where applicable): Plus or
minus one inch from required elevations.
' Top surface of fill, backfill, and topsoil: Plus or minus one inch from
required elevations.
' Top surface of floodplain (where applicable): Plus or minus one inch
from required elevations.
END OF SECTION

1

SECTION 7 - CHANNEL PROTECTIVE LININGS AND TOE
STABILIZATION
7.1 SECTION INCLUDES
Temporary and permanent channel erosion protective linings and toe
stabilization
7.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
7.3 REFERENCES
The following specifications and methods form a part of this
Specification:
ASTM C88 - Standard Test Method for Soundness of Aggregates by
Use of Sodium Sulfate or Magnesium Sulfate
ASTM C127 - Standard Test Method for Specific Gravity and
Absorption of Coarse Aggregate
NCDOT - Standard Specifications for Roads and Structures.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
7.4 GENERAL
A Channel Protective Lining has been selected along channel banks.
Materials to be used in Channel Protective Linings and the toe
stabilization are specified in this section.
Channel erosion protection linings shall be constructed of the materials
specified in this section and as shown on the Drawings. Linings shall
be laid true to the grade shown on the Drawings. Linings shall make a
smooth interface with the surrounding grade. Any portion of the lining
which has its grade or surface disturbed after placement shall be
repaired. Any portion thereof already in place which is found to be
defective or damaged shall be repaired or replaced, as directed by the
Engineer, without additional cost to the Owner.
7.5 MATERIALS
Materials include excelsior and coir fiber matting manufactured
especially for erosion control, Eco-Stakes, wire staples, nonwoven
geotextile, boulders, channel bed material, NCDOT Coarse Aggregate
Size #57, NCDOT Class A Erosion Control Stone, NCDOT Class B
Erosion Control Stone, NCDOT Class I Rip Rap (RipRap), and
NCDOT Class 2 Rip Rap (RipRap).
Matting for erosion control in areas other than stream banks with mild
slopes shall be excelsior matting. Excelsior matting shall consist of a
machine produced mat of curled wood excelsior that is a minimum of
47 inches in width. The mat shall weigh 0.975 pounds per square yard
with a tolerance of plus or minus 10 percent. At least 80 percent of the
individual excelsior fibers shall be 6 inches or more in length. The
excelsior fibers shall be evenly distributed over the entire area of the
blanket. One side of the excelsior matting shall be covered with an
extruded plastic mesh. The mesh size for the plastic shall be a
maximum of 1" x I" square. Matting for erosion control shall not be
Stream Repairs & Bank Stabilization Page 7 Technical Specifications
Watauga County Stream Repairs October 2005

J
r?
u?

dyed, bleached, or otherwise treated in a manner that will result in
toxicity to vegetation. Other acceptable material manufactured
especially for erosion control may be used when approved by the
Engineer in writing before being used.
Erosion control matting for stream banks shat( be CF 7 coir matting.
Matting shall be 100% coir fiber. Minimum Specifications for coir
matting as follows:
Weight 20.6 oz/y& (700 g/mZ) ASTM-D3776
Thickness 6.34 mm
Water Velocity 10 ft/s
Qr-ab/ElQngation (Dry) 115.8lbs/23.9% MD ASTM-134594
54.llbs/33.596 XD
Manning's n 0.0294
Max Shear Stress 4.46 lb/fe
Nonwoven Geotextile: Geotextile shall be a nonwoven fabric with a
minimum weight of 12 ounces per square yard (ASTM D3776), a
minimum grab strength in either direction of 180 pounds (ASTM
1)4632), a minimum puncture resistance of (ASTM D4833) of 85
pounds, ind permeability of (ASTM D4491) greater than 0.2 cm/sec.
Fabric meeting these Specifications shall still be subject to approval or
rejection',by the Engineer. At the time of installation, the fabric will be
rejected if it has defects, rips, holes, flaws, deterioration, or damage
incurred during the manufacture, transportation, or storage.
NCDOT Coarse Aggregate Size #57: Shall conform to gradation
requirements of Table 1005-1, NCDOT Specifications.
NCDOT (Class A Erosion Control Stone: 2 to 6-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards
(No more than 5% of the material furnished can be less than the
minimum size specified, nor more than 10% of the material can exceed
the maximum size specified). Concrete rubble shall not be used.
NCDOT Class B Erosion Control Stone: 5 to 12-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards
(No more. than 5% of the material furnished can be less than the
minimum size specified, nor more than 10% of the material can exceed
the maximum size specified). Concrete rubble shall not be used.
The rock fragments shall be angular to subrounded in shape. Concrete
rubble shall not be used.
Boulders (Toe Stabilization and Footer Rocks): Boulders of
approximate dimension 5' x 3' x 2' shall be individually picked by
Contractor from the quarry or the on-site stockpile for use in toe
stabilization construction. Boulders as small as 3' x 2' x 2' may be
used; however, they shall not constitute more than 30% of the total
boulders. Boulders shall be relatively flat on either side in the same
dimension, preferably the long dimension and must have smooth ends.
NCDOT Mass I Rip Rap (RipRap): 5 to 17-inch, widely graded,
durable, Brushed stone conforming to applicable NCDOT standards.
The stone shall vary in weight from 5 to 200 pounds with 30%
weighing a minimum of 60 pounds each and 10% weighing a minimum
of 15 pounds each. (No more than 5% of the material furnished can be
less than the minimum size specified, nor can more than 10% of the
material exceed the maximum size specified). The rock fragments shall
be angular to subrounded in shape. Concrete rubble shall not be used.
NCDOT Mass 2 Rip Rap (RipRap): 9 to 23-inch, widely graded,
durable, crushed stone conforming to applicable NCDOT standards.
The stone shall vary in weight from 25 to 250 pounds and 60% shall
weigh a minimum of 100 pounds each. (No more than 5% of the
material furnished can be less than the minimum size specified, nor can
more than 10% of the material exceed the maximum size specified).
7.6 TOE STABILIZATION
The work covered by this section consists of the construction of rock
toe stabilization.
The length of toe stabilization to be constructed will be affected by
actual conditions that occur during the construction of the project.
Such variations in quantity will not be considered as alterations in the
details of construction or a change of character of the work.
A tracked hydraulic excavator with a thumb of sufficient size to move
specified boulders is required for this item Precise placement of toe
stabilization will be determined during construction by the Engineer
and may not reflect the construction Drawings. Toe stabilization
installed must be inspected and approved by the Engineer. Excavation
for the purpose of installation is incidental and is covered by this line
item
The excavation of the subgrade and installation will be consecutive and
continuous. Once the installation procedure has been initiated, it will
be completed before the end of the workday. Any incidental/accidental
discharge of sediment accumulation as a result of the installation
procedure will be removed or integrated into the designed bedfonm.
Excavation shall terminate at bedrock if contacted prior to the design
grade. Bedrock will be excavated only if it is determined to be rippable
and necessary by the Engineer.
Install toe stabilization as shown on the Drawings and as directed by
the Engineer. Grade area where toe stabilization is to be constructed.
Surface shall be free of obstructions, debris, and pockets of soft or low
density material. Unless otherwise directed by the Engineer, the stone
shall be placed on the slope and/or angle as indicated on the plans. The
stone shall be graded so that the smaller stones are uniformly
distributed throughout the mass. The Contractor may place the stone
by mechanical methods provided that when the work is completed, it
forms a properly graded, dense, neat layer of stone.
7.7 CHANNEL PROTECTIVE LININGS
Grade the area to be lined. Surface shall be free of obstructions, debris,
and pockets of soft or low density material. The rock weir structures
shall be completed prior to installation of the channel protective
linings.
Cover area with all available on-site stockpiled topsoil to a preferred
minimum depth of 6inches. Final grade with topsoil shall be as shown
on Drawings. Topsoil shall be prepared with fertilizer and lime, and
seeded as described in Section 10 (Permanent Seeding) of these
Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of six
(6) inches.
Stream Repairs & Bank Stabilization Page 8 Technical Specifications
Watauga County Stream Repairs October 2005

I I

install CF-7 erosion control matting perpendicular to the axis of the
stream. The matting shall be laid smooth and free from tension, stress,
folds, wrinkles and creases. Horizontal overlaps shall be a minimum of
,12 inches with the upper matting overlapping the lower matting.
Vertical overlaps in matting shall be a minimum of 12 inches with the
upstream matting overlapping the downstream matting.
The top (crest) edge of the matting shall be anchored in a trench at least
12 inches deep, as shown on the Construction Drawings, to prevent
undercutting of the matting. The trench should be located a minimum
of 12 inches from the top of bank, and shall not alter channel or
floodplain grade. Matting trench and Eco-Stakes® shall be installed as
shown on Drawings. Matting shall be anchored utilizing Eco-stake®
brand stakes installed not more than 3 feet apart (3' on centers) and
staggered, with a minimum of 3 stakes per square yard of matting over
the entire lined area. 24-inch Eco-stakes® shall be used along the toe
of the channel and 12-inch stakes shall be used within the field and top
edge of the matting as detailed on the Construction Drawings. Along
all laps (both vertical and horizontal) in the matting, install a common
row of staples at the seam, installing staples on I foot (12 inch) centers.
Along the toe, 24 inch Eco-Stakes® shall be spaced not more than 2
feet All stakes shall be driven perpendicular to the axis of the stream as
shown oil Drawings. Care shall be taken to avoid damage to matting
material.'
In the event that the matting is displaced or damaged during
installation, the matting shall be repositioned or replaced. This will be
done at no additional cost to the Owner.
7.8 SLOPE PROTECTION
Grade area to be lined. Surface shall be free of obstructions, debris,
and pocklets of soft or low density material.
Cover area with all available on-site stockpiled topsoil to a preferred
minimum depth of 6 inches. Final grade with topsoil shall be as shown
on Drawi??gs. Topsoil shall be prepared with fertilizer and lime, and
seeded as described in Section 10 (Permanent Seeding) of these
Specifications. The Contractor is ultimately responsible for
establishing a suitable planting medium with a minimum depth of six
(6) inches.
Install excelsior matting perpendicular to slope. Matting shall be
enrolled with netting material on top and blanket material in contact
with the soil. (Note: some excelsior matting has netting on both sides.)
The matting shall be laid smooth and free from tension, stress, folds,
wrinkles and creases. Horizontal overlaps shall be a minimum of 12
inches with the upper matting overlapping the lower matting. Vertical
overlaps in matting shall be a minimum of 12 inches.
The top (crest) and bottom (toe) edges of the matting shall be anchored
in trench at least 12 inches deep as shown on Drawings to prevent
undercutting of the matting. Matting trench and wire staples shall be
constructed and installed as shown on Drawings. Wire staples shall be
installed not more than 3 feet apart (3' on centers) and staggered, with a
minimum of 3 stakes per square yard of matting over the entire lined
area. Staples shall be driven perpendicular to the soil surface. Staples
shall be driven flush with soil surface to reduce potential for movement
of the erosion control matting. Staples shall be installed in parallel
rows on 3' centers and in trenches at the top and bottom of the slope as
shown on Drawings. Along all laps (both vertical and horizontal) in
the matting, install a common row of staples at the seam, installing
staples on Ifoot (12 inch) centers. All standard anchoring staples shall
be 18 inches in length. Staples shall be driven in with a wooden
mallet. Care shall be taken to avoid damage to matting material.
In the event that the matting is displaced or damaged during
installation, the matting shall be repositioned or replaced. This will be
done at no additional cost to the Owner.
END OF SECTION
Stream PLepairs & Bank Stabilization
Watauga County Stream Repairs
Page 9
'Technical Spectttcattons
October 2005
i
SECTION 8 - STREAM BANK PLANTING
8.1 SECCTION INCLUDES
Provide all necessary equipment and labor to implement stream bank
planting plan.
8.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
8.3 REFERENCES
The following specifications and methods form a part of this
Specification:
NCDOT - Standard Specifications for Roads and Structures.
' 15 NCAC 2B.200 - Classification of Water Quality Standards
Applicable to Surface Waters & Wetlands of North Carolina
Americap Standard for Nursery Stock, latest edition
INCDENR - Erosion and Sediment Control Planning and Design
I Manual
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more stringent requirements shall
apply.
8.4 GENERAL
All plants shall be as called for by these Specifications and shown on
' the Drawings. All plants delivered shall be true to name. Each plant,
or group of the same species, variety, and size of plant, shall be legibly
tagged with the name and size of the plant.

1

All plants shall be first-class representatives of their species. Stakes
shall be reasonably straight.
All plants shall be free from plant diseases and insect pests. All
shipments of plants shall comply with all nursery inspection and plant
quarantine regulations of the States of origin and destination, as well as
with Federal regulations governing interstate movement of stock. If
stock from other States is used, the stock shall be accompanied by a tag
or certificate stating, in effect, that the stock has been inspected and
certified by an authorized official of the State of origin as apparently
free from injurious plant pests.
All plants shall be subject to inspection at any time by the Engineer.
Any such inspection before or during planting operations, however
shall not be construed as final acceptance of the plants involved.
8.5 LIVE STAKES
Live stakes, if approved for use by the Engineer, shall consist of freshly
cut live plants of select stock which has been developed by proper
cultural treatment. Stakes and cuttings shall be 3/8" to 1/2" diameter
and between 12 and 18 inches long. They shall be carefully cut from
mother-stock plantings. Plant materials shall be packaged, transported,
and handled in a manner that will prevent injury, drying out, or
freezing.'
8.6 PLANT SUBSTITUTION
No change in the specified plants (species, variety, size, caliper,
furnish, etc.) will be made without written approval of the Engineer.
All requests by the Contractor for substitutions shall be presented in
writing and shall include a listing of the sources which have been
contacted in an attempt to secure the specified plant material. Requests
for substitutions shall include botanical name, common name, size,
caliper, and furnish description of the proposed substitute. No increase
in compensation will be made to the Contractor as a result of the use of
'the approved substitute plants.
8.7 PLANTING PREPARATION
In areas where stream restoration will be implemented, preparation for
restoration planting operations shall be as described in SECTION 7
(Channel Protective Linings) of these Specifications.
Where live stakes shall be planted, through the Channel Protective
Lining, holes shall be made by neatly punching a hole in the matting
with a dibble bar (a heavy metal tool with a blade and a foot petal).
The dimensions of the hole shall not exceed 3" in any direction and
shall not damage the surrounding matting.
8.8 STREAM BANK PLANTING
Where live stakes shall be planted, they shall be installed at a 45 to 60
degree angle in the direction of stream flow. The buds of stakes and
plant cuttings should point upward and about 2 inches of wood should
be exposed above the ground surface. Tamp the surrounding soil
firmly to eliminate air pockets.
Where stream bank planting is directed, areas shall be planted with
shrubs, using 6-foot by 6-foot centers as shown on the Construction
Drawings.
Care should be taken to avoid planting stakes too deep or too shallow,
and to avoid damage to stakes during planting. Planting depth should
be in accordance with listed references and supplier recommendations.
8.9 PLANTING PERIODS
The installation of live stakes, bare root, or container grown plants
shall be performed between October 15 and December 15, 2005.
However, planting can not begin until all stream repairs have been
completed-
8. 10 REMOVAL OF NUISANCE VEGETATION
Removal or control of nuisance vegetation shall be performed for a
period of 90 days as necessary to ensure adequate survival of specified
plant species.
8.11 WATER FOR PLANTINGS
The Contractor shall install a rain gage and collect daily gage readings
at the site. Contractor shall provide initial watering on the day of
planting and thereafter at a minimum rate of 1 inch per week (including
rainfall) for a period of 90 days. Water used in the planting or care of
Stream Repairs & Bank Stabilization Page 10 Technical Specifications
Watauga County Stream Repairs October 2005
I
vegetation and plantings shall meet the requirements of Class C fresh
waters as defined in 15 NAC 2B.200.
8.12 SUBMITTALS
Contractor shall submit purchase certificates (or other proof) of all
species planted.
END OF SECTION

I

SECTION 9 - BUFFER PLANTING
9.1 SECTION INCLUDES
Provide all necessary equipment and labor to implement buffer planting
plan.
9.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
9.3 REFERENCES
American Standard for Nursery Stock, latest edition
NCDENR - Erosion and Sediment Control Planning and Design
Manual
15 NCAC 2B.200 - Classification of Water Quality Standards
Applicable to Surface Waters & Wetlands of North Carolina
The following specifications and methods form a part of this
Specification:
NCDOT - Standard Specifications for Roads and Structures.
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, the more s*ingent requirements shall
apply.
9.4 GENERAL
All plants shall be as called for by these Specifications. Bare rooted
plants may be used in lieu of container grown plants provided written
approval for such use has been obtained from the Engineer. Grading of
plants, type and minimum dimensions of containers shall conform to
the Specifications contained in the latest edition of American Standard
for Nursery Stock. Plants shall not be cut back from larger sizes to
meet sizes called for on the Drawings. All plants delivered shall be
true to name. Each plant, or group of the same species, variety, and
size of plant, shall be legibly tagged with the name and size of the
plant.
All plants shall be first-class representatives of their species. The root
system shall be vigorous and well-developed. The branch systems shall
be of normal development, and free from disfiguring knots, sun scald
injuries, abrasions of the bark, dead or dry wood, broken terminal
growth, or other objectionable disfigurements. Trees shall have
reasonably straight stems, and shall be well branched and symmetrical
in accordance with their natural habits of growth.
All plants shall be free from plant diseases and insect pests. All
shipments of plants shall comply with all nursery inspection and plant
quarantine regulations of the States of origin and destination, as well as
with Federal regulations governing interstate movement of nursery
stock. If nursery stock from other States is used, the stock shall be
accompanied by a tag or certificate stating, in effect, that the nursery
stock has been inspected and certified by an authorized official of the
State of origin as apparently free from injurious plant pests.
All plants shall be subject to inspection at any time by the Owner,
Stream Repairs & Bank Stabilization Page I I Technical Specifications
Watauga County Stream Repairs October 2005

Engineer, or a party to be named by the Owner. Any such inspection
before or during planting operations, however shall not be construed as
final acceptance of the plants involved.
9.11 WATER FOR PLANTINGS
9.5 CONTAINER GROWN PLANTS
The Contractor shall install a rain gage and collect daily gage readings
Container grown plants shall be healthy, vigorous, well-rooted, and at the site. Contractor shall provide initial watering on the day of
' shall have become established in the container in which they are planting and thereafter at a minimum rate of I" per week (including
delivered. These plants shall have been in the established container rainfall) for a period of 90 days. Water used in the planting or care of
long enough for the fibrous roots to have developed so that the root vegetation and plantings shall meet the requirements of Class C fresh
' mass will retain its shape and hold together when removed from the waters as defined in 15 NAC 2B.200.
container. The container shall be a 1 gallon container or larger,
sufficiently rigid to firmly hold the soil protecting the root during 9.12 SUBMITTALS
transporting, handling, and planting, and the soil shall not be allowed
to become frozen. Contractor shall submit purchase certificates (or other proof) of all
species planted.
9.6 BARE ROOT PLANTS
'
if approved for use by the Engineer, shall have a
Bare root plants END OF SECTION
,
heavy fibrous root system which has been developed by proper cultural
treatment. They shall be dug, packaged, transported, and handled in a
manner that will prevent injury to or drying out of the trunks, branches,
or roots, or freezing of the roots.
a?
'9.7 PLANT SUBSTITUTION
' No change in the specified plants (species, variety, size, caliper,
fumish, etc.) will be made without written approval of the. Engineer.
All requests by the Contractor for substitutions shall be presented in
' writing and shall include a listing of the sources which have been
contacted in an attempt to secure the specified plant material. Requests
for substitutions shall include botanical name, common name, size,

' caliper, and famish description of the proposed substitute. No increase
in compensation will be made to the Contractor as a result of the use of
the approved substitute plants.
9.8 PLANTING PREPARATION
In areas where wetland and buffer planting will be implemented,
preparation for planting operations shall be as described in SECTION
5.6 (Planting Preparation) of these Specifications.
Where container grown plants will be planted, holes made in
preparation for tree and shrub species planting shall be as shown on the
' Construction Drawings.
Bare root plants and container-grown plants shall be planted in holes
made by neatly punching a hole through slope protection matting and
into existing grade with a dibble bar (a heavy metal tool with a blade
' and a foot petal). The dimensions of the hole shall not exceed 3" in any
direction.
' 9.9 PLANTING PERIODS
The installation of bare root and container grown plants shall be
performed between October 15 and December 15, 2005. However,
planting can not begin until all stream repairs have been completed.
9.10 REMOVAL OF NUISANCE VEGETATION
' Removal or control of nuisance vegetation shall be performed for a
period of, 90 days as necessary to ensure adequate survival of specified
plant species.

i
T
h
l S
ifi
i
Stream I};eparrs & Bank Stabilization Page n
ca
ec
pec
cat
ons
12
Watauga County Stream Repairs October 2005

i
SECTION 10 -PERMANENT SEEDING
10.1 SECTION INCLUDES
Permanent seeding for permanent site stabilization.
' 10.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
' 10.3 REFERENCES
The folldwing specifications and methods form a part of this
Specificaltion:
t NCDENR - Erosion and Sediment Control Planning and Design
Manual
areas where Channel Protective Lining will be installed, no mulch shall
be used and erosion control matting shall be placed within 24 hours of
seeding. Apply mulch at the rates indicated below.
Areas with Channel Protective Linings:
Species Rate fibs/acre)
Creeping Red Fescue 80
(Festuca rubs ruba)
Redtop 15
(Agrostis stolonifera L.)
Kentucky bluegrass 15
(Poa pratensis L.)
Rye (grain) Grass 15
(Secale cereale)
All other disturbed areas:
' When the Specifications or Drawings differ from the requirements of Species Rate 0s/acre)
the above-referenced documents, the more stringent requirements shall Creeping Red Fescue 80
apply. (Festuca rubs Tuba)
Redtop 15
10.4 GEl'jIERAL (Agrostis stolonifera L.)
Permanent seeding shall be executed in temporary lined areas and all Kentucky bluegrass
(Poa pratensis L) 15
other areas which are disturbed during construction activities. In areas Rye (gain) Grass 15
where Channel Protective Lining will be installed, seedbed preparation (Secale cereale)
and seeding shall be performed prior to the placement of erosion
Control matting (See SECTION 7 - Channel Protective Linings). Mulch Rate Rbs/100JW.ft.)
' 10.5 SEEDBED PREPARATION Grain Straw 70
Complete grading before topsoiling or preparing seedbeds. Avoid
' creating steep slopes. Excess stockpiled topsoil not used in
construction of Channel Protective Lining shall be redistributed across
areas to be seeded. Where topsoil is unavailable, topsoil shall be
imported..
The topsoil should be spread to a uniform depth of six inches and
bonded to the subsoil by loosening with a disc, harrow, or chisel plow.
' Areas where seeding will occur on exposed finished grade shall be
disked orhatrowed to ensure soil aeration and to increase the surface
roughness prior to planting.
Apply lime and fertilizer evenly across seedbed and work into the top
4-6 inches of soil by discing or other suitable means. Operate
machinery on the contour.
Rework the surface if soil becomes compacted or crusted prior to
seeding. Complete seedbed preparation by breaking up large clods and
raking into a smooth, uniform surface. Fill in or level depressions that
clan collect water.
14.6 SEEDING
Apply permanent seeding to seedbed after preparation is complete. Use
' certified seed for permanent seeding whenever possible. Certified seed
is inspected by the North Carolina Crop Improvement Association. It
meets published North Carolina Standards and should bear an official
' "Certified, Seed" label. Broadcast seed into a freshly loosened seedbed
that has not been settled by rainfall. Mulch must be used on slopes
411:1 V or steeper and in areas when concentrated water may flow.
Anchor mulch with netting in areas subject to concentrated flow. In
Grass Seeding
b V Dates Possible Rate
Annual Rye Aug. 15 - May 1 60 lbs./ac.
Getman Millet Mayl - Aug 15 40 lbs./ac.
10.7 SEEDING DATES
Seeding dates given in these Seeding Specifications have the best
probability of success.
Best Possible
Late winter 15 Feb-15 Mar I Dec-15 Mar
Late Fall 1 Sept-30 Sept 1 Oct-30 Nov
Seeding shall be completed within the "possible" range of dates.
10.8 SOIL AMENDMENTS
Apply lime and fertilizer according to soil tests, or apply 2 tons/acre
(4,000 lb/acre) ground agricultural limestone and 1,000 lb/acre 5-10-10
fertilizer, or as directed by the Engineer.
10.9 MULCH
Apply grain straw, or equivalent cover of another suitable mulching
material as described above. Anchor mulch by roving or netting.
Netting shall be used on slopes steeper than 2H: I V.
END OF SECTION
Stream Repairs & Bank Stabilization Page 13 Technical Specifications
Watauga County Stream Repairs October 2005

0

n
u
u
n
H

n
r

I?

n

SECTION 11 - SEDIMENT & EROSION CONTROL
11.1 SECTION INCLUDES
Installation of temporary sediment and erosion control measures to
include installation of silt fence and temporary seeding measures. The
Contractor shall maintain these measures to ensure proper structure
function and vigorous temporary vegetative cover during construction.
11.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
11.3 REFERENCES
The following specifications and methods form a part of this
Specification:
ASTM D4355 - Standard Test Method for Deterioration of Geotextiles
from Exposure to Ultraviolet Light and Water (Xenon-Arc Type
Apparatus)
ASTM D4632 - Standard Test Method for Grab Breaking Load and
Elongation of Geotextiles
ASTM D4751 - Standard Test Method for Determining Apparent
Opening Size of a Geotextile
NCDENR - Erosion and Sediment Control Planning and Design
Manual
When the Specifications or Drawings differ from the requirements of
the above-referenced documents, themore stringent requirements shall
apply-
11.4 MATERIALS
Silt Fence: Silt fence shall have steel posts, woven wire fabric, and
filter fabric. The steel post shall have a minimum length of Y and
rhinimum width of 13/4". The steel posts shall have projections for
fastening the wire to the fence. The woven wire fabric shall be at lest
32 inches!; high, and shall have at least 6 horizontal wires. Vertical
wires shall be spaced a maximum of 12 inches apart. The top and
bottom wires shall be at least 10 gauge. All other wires shall be at least
12'/2 gauge. The silt fence filter fabric shall meet the following
minimum criteria
Grab Tensile Strength 100 lbs.
Grab) Tensile Elongation 15%
UV Resistance 70%
Apparent Opening Size (AOS) 20 (US Sieve)
11.5 SILT FENCE
The Contractor shall provide all labor, materials, tools and other items
necessary : to furnish and install the silt fence as shown on the Drawings
and specified herein. The silt fence shall be placed following the
contours as closely as possible. The ends of the silt fence shall be
turned uphill.
The posts) shall not exceed a spacing of 8 feet. The posts shall be
driven into the ground and shall extend above ground as shown on the
Drawings. The filter fabric shall be stapled or wired to each post. The
filter fabric shall extend into the ground as shown in the Drawings.
If possible, the filter fabric shall be cut from a continuous roll to avoid
the use of joints. When joints are necessary, securely fasten the filter
cloth only at a support with overlap to the next post.
Silt fences shall be inspected weekly and after each significant storm (I
inch in 24 hrs.). Any required repairs shall be made immediately.
Sediment shall be removed when it reaches 1/3 the height of the fence
or 9 inches maximum. Dispose of the sediment in the designated
disposal area
11.6 TEMPORARY SEEDING
The Contractor shall provide all labor, materials, tools, and other items
necessary to provide temporary seeding in accordance with State and
local Standards.
Areas where no substantial or significant progress is made for more
than 15 days shall be temporarily seeded as shown on the Drawings and
specified herein. All areas must be seeded, mulched, and anchored
unless written approval is granted by the Owner. Incidental grading
shall not constitute substantial or significant progress in construction
activity.
Seeding and mulching shall be done immediately following
construction. All disturbed areas shall be dressed to a depth of 8
inches. The top 3 inches shall be pulverized to provide a uniform
seedbed.
Agricultural lime shall be applied at a rate of 4,000 pounds per acre
immediately before plowing.
Grass seed shall be applied at the following rate:
Tie Dates Possible Rate
Annual Rye Aug. 15 -May 1 60 lbs./ac.
German Millet Mayl -Aug IS 40 lbs./ac.
5-10-10 fertilizer shall be applied to all disturbed areas at a rate of 1000
pounds per acre, and mulching shall consist of small grain straw
applied a rate of 70 pounds per 1000 square feet (70lbs./I000sq.ft.).
Mulch shall be anchored by roving or netting.
END OF SECTION
Stream Repairs & Bank Stabilization Page 14 Technical Specifications
Watauga County Stream Repairs October 2005

SECTION 12 - SITE MAINTENANCE
12.1 SECTION INCLUDES
Site maintenance to ensure vigorous vegetative cover, stable channel
lining, and durability of the work.
12.2 MEASUREMENT AND PAYMENT
See PROJECT CONTRACT
12.3 EXECUTION
Contractor shall revisit the site as to inspect the condition of the project
site. Areas of erosion, settlement, poor vegetative cover, and displaced
coir or excelsior materials or in-stream structures, shall be repaired.
Site visitsishall be coordinated with Owner.
Erosion Was shall be filled and reseeded in accordance with Section
10 - Permanent Seeding. Areas of poor vegetative cover shall be
reseeded and refertilized only.
Displaced, damaged, or dead shrub species shall be removed, and
replanted in accordance with Sections 8 & 9 - Stream Bank Planting
and Buffet Planting.
Displaced! channel lining materials shall be recovered (if possible) and
replaced, or replaced with new channel lining materials to the design
line and grade.
END OF SECTION
Stream R
Watauga (
& Bank Stabilization
Stream Repairs
Page 15
i ectnucai specincanons
October 2005
E
?i
v ?
I
,? ? ? i
? ?
?
? ?
? ?
? ?
? ',
? ?
( ?
7

??
I i ? i
_
i ?
? I,
?

L

r

ENGINEERING DE51GN FIRM:
McGILL A55OCIATE5
55 Broad Street
A5heville, NC 28801
[phone]
EN`?+ 11,0NMENTAL DE51GN FIRM:
501L 4? ENVIRONMENTAL
CONSULTANTS, PA
11010 Raven Ridge Road
Raleigh, NC 27G 14
(919) 84G-5900

WATAUGA COUNTY, NC
842 West King Street
Boone, NC 28607
[phone]
CONSTRUCTION DRAWINGS FOR:
LOWER WATAUGA SITE
THE PONDS SUBDIVISION
STREAM REPAIRS * 5ANK
STABILIZATION PLAN
CONTENTS:
WATAUGA COUNTY, NC
C I . COVER, CONTENT5, * VICINITY MAP
C2. WORK 51TE ACCE55 PLAN
C3. 51TE PHOTOGRAP115
C4. PROP05ED REPAIR PLAN
C5. CONSTRUCTION 5EQUENCE * PROP05ED BANK REPAIR
CG. ER0510N CONTROL * PLANTING DETAIL5
C7. ER0510N CONTROL DETAI L5

t SEAL s
24993 -
=?99 V,
u4
wzN
? am
?.. z N
?z
uu2uz
z?
0¢
a
?a
Az
z
z?
00
zcc
rAl
ZQ
Z
(L -J
> 0
W O U
ZVOf
D 0
oQZ
U
Q =o
a D
?<
Q 3
s ?I
N a
? CL
m
o?Zemz?
g=ouo
?Sc$1a?8
06
C6
F-
zQ
w?
F-
Z?
0Z
U_
0
SHEET
cl
WORK SITE ACCESS PLAN
a
:::::: :.
........................................................................................
...........................................................................
ACCESS FROM NC 105
THE POND ROAD

err: :::::::::::i'r:'.i'i:{i'rr:i{i': r.......... r:r`... .,. ,

IN-STREAM WORK
P.I.N.: 1888-06-6567 0
CYNTHIA
WEATHERS
262
lIi II III I I I monsoon I I I _
I swoon"
1 -
l l l? l l l ?? 11
m s o n s i m I I I swallows
FLOW
ACCESS POINT

I I I 111?111?111 goilloom III?III VIII Ill Monsanto I,!
?,, WATAUGA RIVER I I, ? I I I ="I' ? lll?
\ 111 ` III Monosson I I I III IMonsoon, IIINollsopw 111 - II1? 1 4-- fl
NOTE:
ANY EASEMENTS REQUIRED FOR CONSTRUCTION ACCESS TO
THE REPAIR AREA SHALL BE COORDINATED BY THE COUNTY.
NOTE:
AT THE MATERIAL ACCESS POINT, ONLY 1 - 6" MAPLE ON THE
WEATHERS PROPERTY AND 1 -4n CHERRY ON THE SZOLLOSY PROPERTY
MAY BE REMOVED. ANY OTHER TREES DAMAGED MUST BE REPLACED AT
THE CONTRACTORS EXPENSE. ALL DAMAGED GRASS SURFACES SHALL BE
RESTORED AS CLOSE AS POSSIBLE TO EXISTING CONDITION.
r
U"q
wZ
? ¢a
Hzm
?z
Uzz
-
dz
Uo
a?
a
C7
z
-<aw
z'
02
wh
a F-
z
Zz
W 0
?o?
Z
0
0<?
Q z
C7 0
? U
a
F_
a
8
? a }
y ° } W
?
oz A. gz"Bm=:
mm kiyI
i<UW<WO
iii CN OUCU
L Z
r
?a
QU)
U)
0 ?w
QU
?U
QQ
?w
W
WU)
3Y
0?
SHEET
C2
P.I.N.: 1888-06=8639
P.I.N.: 1888-06-7518 ANN
IMLER
EVA/FRANK
0 F71 SZOLLOSY
272
_ III
NOT TO SCALE
..,:.:: ?:....-:: !: ?': ?::....-..1..1..1......
.....
. .'.:'::. ..'.......................................: :.::......::::::::::::::'::
a ............................................ .

POND:::::::.::'::
........................
.......
....
l\Ll nll\ nl\Lf1

LOWER WATAUGA SITE
PHOTO #1- UPSTREAM END OF REPAIR AREA AT TREE
EXTENDING OUT OVER THE STREAM.
BEGIN TOE STABILIZATION.
LOWER WATAUGA SITE
PHOTO #4 - UNDERMINED 30' SYCAMORE
NEAR DOWNSTREAM END OF REPAIR REACH.
TOE STABILIZATION, THIS AREA
LOWER WATAUGA SITE
PHOTO #2 - 30' DOWNSTREAM FROM UPSTREAM END OF REPAIR
REACH, UNDERMINED 24' SYCAMORE A 6• BIRCH.
5' TO T TOE STABILIZATION DOWNSTREAM OF SYCAMORE,
3' TO 4' TOE STABILIZATION UPSTREAM OF SYCAMORE.
SITE PHOTOGRAPHS
LOWER WATAUGA SITE
PHOTO #3 - NEAR MID-POINT OF REPAIR REACH.
30' UNDERMINED SYCAMORE 1£ RUINS OF WALL.
5' TO T TOE STABILIZATION, THIS AREA
LOWER WATAUGA SITE
PHOTO #6 - DOWNSTREAM END OF REPAIR AREA,
INCLUDING ROCK STEPS, EXISTING ROCK WALL TO REMAIN,
AND EXISTING GABIONS TO REMAIN.
8!'
SEAL z
_ 24993 '
F&GINO?:'
V) uw?
o
wzN
? am
Hz?
?wa
?z
UUzz
z
O a
a
V)
V)za
z
w
z?
L w
0a
zm
w?
D-
WO
Z
0a
t?
3a

s
$? a
mo
O?zemrcrc
z f
z 9 z 0000
D O U O m
W
U)
<
v
/n
I O
>Q F-
>0
? d
W Lij
H
00
SHEET
C3
LOWER WATAUGA SITE
PHOTO #5 - DOWNSTREAM END OF REAPAIR AREA,
END TOE STABILIZATION 5 UPSTREAM OF ROCK STEPS.
PROPOSED REPAIR PLAN
SCALE: 1 "= 10'
P.I.N.: 1888-06-6567
LIVE TREE EXTENDING ACROSS STREAM CYNTHIA WEATHERS
BEGIN TOE STABILIZATION 262 THE POND ROAD
TAPER TO MATCH EXISTING ROCK ELEVATION
EXISTING TOP OF BANK
BUILD NEW TOP OF BANK &
BACKFILL BEHIND TOE STABILIZATION
li
PER DETAIL
.. 424'YCAM(ORE
FC0
?47c
co 0
J\
EXISTING TOE OF SLOPE/EDGE OF WA
141i I!
3' TO 4' TALL INSTALL TOE STABILIZATION---`
PER DETAIL, APPROX. 95 L.F.
TOE STABILIZATION
GRAVEL. BAR
WATAUGA RIVER
III `
11j `
1j1 ?111mmmm 111IIIummu III?I4
NOTES:
1. ALL SITE DATA AS COLLECTED DURING SITE VISIT BY
SOIL AND ENVIRONMENTAL CONSULTANTS, P.A. AND
MCGILL ASSOCIATES IN OCTOBER 2005.
2. ALL LOCATIONS, DISTANCES, AND DIMENSIONS ARE APPROXIMATE AND
INTENDED FOR USE IN THE DEVELOPMENT OF A BANK STABILIZATION
AND REPAIR PLAN.
3. LOCATIONS OF EXISTING UTILITIES AND PROPOSED STRUCTURES AS SHOWN
ARE APPROXIMATE ONLY. EXACT LOCATIONS ARE TO BE VERIFIED IN THE
FIELD BY THE CONTRACTOR.
4. CONSTRUCT TOE STABILIZATION AS DIRECTED BY ENGINEER AT THE
TIME OF CONSTRUCTION.
III?? III
?BCIULDDER\ BDULDER ? B c $ #
Op'm$WW
1 1 =FOH?,<?,77Bm
=Name 11 1 smomm 1 1 1 soon=
]?p Vy
111
l0 go
NOTE:
PLANTING AREA TO INCLUDE MID-BANK ZONE BETWEEN TOP OF
TOE STABILIZATION AND EXISTING TOP OF BANK (NEW FILL AREA)
ESTIMATED REPAIR LENGTH = 105'
LENGTH OF TOE STABILIZATION= 95'
APPROXIMATE DISTURBED AREA = 0.05 ACRES
J"= I I I? I I L1?` _
III
IN-STREAM ACCESS
TO SITE
FLOW
BOULDER
?Wn
U"q
Wz
Nzm
m
wx
?z?
,qqllowpl -U
UuZ z
z?
O.<
L a?
0a
4z
z?
00
z?
14h
p" r
z
Zz
W J
O U
U
0
Q z
0 o
U
Q
F_ Q
Q
REMOVE BROKEN WALL
FROM STREAM, TYP.
BEFORE YOU DIGI
CALL 1-800-832-0949
N.C. ONE-CALL CENTER
IT'S THE LAwI
%;99 GINS . ?Al
" •• `?
'Yrlolll
z
LU
?J
?a
0Q
Da
Q W
Q?
?Lli
w0
?: a
00
a
SHEET
C4
I. I m I m I m I? I
ATERIAL A
TO SITE
? ® 1
6" IRCH
m
t
i
I i I i I no I
an I i I an I an
5' TO 7' TALL
TOE STABILIZATION
P.I.N.: 1888-06-7518
EVA & FRANK SZOLLOSY
272 THE POND ROAD

N
EXISTING GABIONS
TO REMAIN IN SERVICE
DO NOT DISTURB FOUNDATION
EXISTING ROCK STEPS
TO REMAIN IN SERVICE
EXISTING ROCK WALL
TO REMA IN SERVICE
' .{ CAMORE
:Q
? n.
?w
c?
li .I IililiZ0
0
?J
LIMITS OF DISTURBANCE
0
L
J'_
J
r
r.
r
CONSTRUCTION SEQUENCE:
1. Obtain NCDENR, USACE, & local authority approval for construction. The Contractor
must strictly adhere to the conditions of the U.S. Army C.O.E. & the NCDENR DWQ
as set forth in the 404 & 401 permits.
2. Notify NCDENR (Land Quality Section) if necessary, ten days prior to construction.
3. Locate existing utilities on site. Coordinate access, staging area
and temporary stockpile areas with Owner and Engineer. Engineer to identify and mark
"limits of disturbance" within channel
4. Install temporary sediment & erosion control measures, access roads, channel access,
staging area, and temporary facilities.
NOTE: All installed temporary sediment and erosion control measures will be inspected
weekly or after a major rainfall event (> 0.5 inches) by the Contractor. Upon
inspection, any necessary repairs will be performed by the Contractor.
5. Clear and grub in required areas for stream repair. Remove and stockpile topsoil
in areas to be excavated. Stockpile In areas as Directed by
Owner / Engineer. Surround Stockpile Areas with 2 Rows of Silt Fence.
6. Perform stream bank repairs as shown on plans and directed by engineer.
Install toe stabilization as directed by the engineer at the
time of construction. Contractor shall not cross "limits of disturbance"
without prior approval of the engineer.
7. Stabilize repaired bank zones (lower, mid-, and upper) as shown in details. Apply
temporary erosion control seeding measures to disturbed areas as final grading is
reached. Re-distribute topsoil, augment as necessary to meet planting specifications.
8. Perform tree and shrub planting as specified. Engineer to be notified prior
to planting observation to approve planting bed conditions and plant materials.
Tree and Shrub plantings may be delayed until Fall season with approval of owner & Engineer.
9. Apply permanent seeding measures. Remove temporary sediment & erosion
control measures including construction entrance (if necessary).
10. Coordinate for walk-thru inspection with Owner, Engineer, and Agency
Representatives.
11. Plantings shall be made during Fall season.
wz
Q:
o Hz,
Mz
0z
(JOz?
Q=
a>
Z
--wi
Z`
? i
Z:
Q
a- ? c
a
L
r.
Z
ALL SURFACES OF REPAIRED FILL AREA-
TO RECEIVE EXCELSIOR MATTING
INSTALL EXCELSIOR MATTING PER SPECS
AND MANUFACTURERS RECOMMENDATIONS
BACKFILL W/ COARSE (BED) MATERIAL-
AND MIN. 12" VEGETATIVE SUPPORT SOIL
APPROXIMATE -)
REPAIRED BANK &
CHANNEL LOCATION
REMOVE EXISTING DEPOSITS
& UTILIZE AS BACKFILL
:NSION AS SHOWN ON SHEET C4
3' TO 4' FOR UPPER REACH
5' TO 7' FOR LOWER REACH
EMBED FOOTER ROCK
ONE ROCK THICKNESS
MIN. 2' TO 4'
,
0

VARIES
MAX. 1.5:1
[EXISTING GRADE
(ERODED & FAILED BANK)
OVER-EXCAVATE LOOSE MATERIAL 0 TOE
& BACKFILL W/ COARSE (BED) MATERIAL,
NRAPPED W/ NON-WOVEN GEOTEX11LE FABRIC.
FOOTER ROCKS
0
0
Q
Z
C
a
C.
Q
c
PROPOSED REPAIRED J g
TOE OF SLOPE R
N
BANK REPAIR L
Z Q
NOT TO SCALE j Cl-
C3 Q?
BANK REPAIR NOTES: W
U1
1. INSTALL TOE STABILIZATION, HEIGHT AND LOCATION AS SHOWN ON SHEET C4. Z Z
Q
2. DEPTH AND EXTENTS OF UNDERCUT TO BE DETERMINED BY ENGINEER AT 0 -k+ lfl
TIME OF CONSTRUCTION. W
? In
3. LOWER BANK ZONE TO BE CONSTRUCTED USING RIVER BED BORROW C ? O
MATERIALS AS APPROVED BY THE ENGINEER. MID-, AND UPPER BANK ZONE TO BE CONSTRUCTED USING OTHER APPROVED MATERIALS. '. 4ds ?N Z O
2 `•? 0 a/
4. BANK REPAIRS TO BE BENCHED INTO EXISTING FAILED SLOPE AS SEAL ??? U
DIRECTED BY THE ENGINEER AT THE TIME OF CONSTRUCTION. 24993 10
:'a ; SHEET
C5
1H
J

r
u
u
FROM EX15TING ROAD
2'-3' COARSE AGGK
(RAILROAD 15ALlA5T)
NOTES:
I . A 5TA13IUZED PAD OF CRUSHED STONE SHALL BE LOCATED WHERE
TRAFFIC WILL BE ENTERING OR LEAVING A CONSTRUCTION 51TE TO OR
FROM AN EXISTING ROAD.
2. STONE TO BE 2 - 3 INCH WASHED STONE RAILROAD BALLAST.
3. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL
PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC STREETS
OR EXISTING PAVEMENT. THIS MAY REQUIRE PERIODIC TOP DRESSING
WITH ADDITIONAL STONE AS CONDITIONS DEMAND AND REPAIR AND/OR
CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT.
4. ALL SEDIMENT SPILLED, DROPPED, WA5HED OR TRACKED ONTO PUBLIC
STREETS MUST BE REMOVED IMMEDIATELY.
5. WHEN NECESSARY WHEELS MUST BE CLEANED TO REMOVE SEDIMENT
PRIOR TO ENTERING A PUBLIC STREET, WHEN WASHING 15 REQUIRED,
IT SHALL BE DONE ON AN AREA 5TA1311JZED WITH CRUSHED STONE
WHICH DRAINS INTO AN APPROVED SEDIMENT BASIN.
EXACT LOCATION OF TEMPORARY CONSTRUCTION
EXISTING ROAD 10 4' 3G' MINIMUM ENTRANCE TO BE DETERMINED AT PRE-CON5TRUCTION
MEETING
0 HUMP TO DIVERT RUNOFF
FROM EXISTING ROAD
5TABILIZED CONSTRUCTION ENTRANCE
(NOT TO SCALE)
EXISTING CHANNEL BED
EXISTING EDGE OF WATER
o cA 0? 00 0
?
EXISTING FAILED
TOP OF BANK
CONTRACTOR TO CUT -
ACCE55 RAMP TO
SLOPE AS NEEDED FOR
EQUIPMENT ACCE55
MINIMUM 12' LAYER CLA55 W-1
RIPRAP WITH MIN. 12 OZ. WOVEN PLAN
GEOTEXTILE FABRIC UNDERLAIN
EXISTING TOP OF BANK
CONTRACTOR TO CUT
ACCESS RAMP TO
SLOPE AS NEEDED FOR
EQUIPMENT ACCE55 --
LAY BACK 51DE SLOPES
OF ACCESS TO STABLE
GRADE
EXISTING FAILED BANK----
MATERIAL MATERIAL TO BE REMOVED
EIX15TING CHANNEL BED
CHANNEL ACCE55 DETAIL
(NOT TO 5CALE)
I l i
MINIMUM 12' LAYER
CLA55'A' RIPRAP
PROFILE
SHRUBS
5FECIE5 COMMON NAME TOTAL# SIZE RPMARr.5
CARPINUS
CAROUNIANA AMERICAN
HORNBEAM TBD BARE ROOT/POTTED REPAIR AREA
HAMAMELIS
VIRGINIANA AMERICAN
WITCHHAZEL TBD BARE ROOT/POTTED REPAIR AREA
ALNUS
SERRULATA BROOKSIDE
ALDER TBD BARE ROOT/POTTED REPAIR AREA
LEUCOTHOE
FONTANESIANA HIGHLAND
DOGHOBBLE TBD BARE ROOT/POTTED REPAIR AREA
SALIX NIGRA BLACK WILLOW TBD BARE ROOT/POTTED REPAIR AREA
CORNUS AMOMUM SILKY DOGWOOD TBD BARE ROOT/POTTED REPAIR AREA
SAUX SERICEA SILKY WILLOW TBD BARE ROOT/POTTED REPAIR AREA
NOTE:
SHRUB SPECIES TO BE RANDOMLY INTERMIXED ON 5'X5' SPACING
UTILIZING AT LEAST 3 OF THE 7 SPECIES LISTED ABOVE. MATERIAL
SOURCE AND DESIRED SUBSTATIONS TO BE APPROVED BY DESIGNER.
2 3
Open planting Place bare-root C105C hole Wth
hole with Seedling in hole - Shovel or Auger-
Shovel or Auger root collar at no air space
surface around roots
PLANTING DETAIL
(NOT TO SCALE)
NOTE: CONTRACTOR TO REFRESH
STONE LAYER AND AUGMENT
AS NECESSARY TO REDUCE
EROSION AND SEDIMENTATION
'III-A ?? I I I-?
MINIMUM 12 OZ. WOVEN
GEOTEXTILE FABRIC
Wz:
a>;
© E-4 z? I
?z
uz?
Dacl
z
a?
we
zr
z?
kilw"
r==1
h O
Z
0u
Q
L
0
b'
4.
L
a:
C
7
Q
c
I?
i
@o Q F 9?..
?So
J
Z U'
O Z
Z Q
ogo
C
0 OZ
ILI
4 9< • F
SEAL
24993 I
-?•'••Fy s 5HEET
.?q? • CG
n,

0

I
771
1
8' MAX FOR STD. STRENGTH FABRIC
WITH WIRE MESH REINFORCEMENT
2" STEEL ANGLE OR
P05T SET MIN. 18" G' MAX FOR EXTRA STRENGTH
INTO GROUND FABRIC WIO WIRE MESH -\
NOTES. SILT FENCE
1. FILTER BARRIERS SHALL BE INSPECTED
IMMEDIATELY AFTER EACH RAINFALL AND
DAILY DURING PROLONGED RAINFALL.
REPAIR SHALL BE MADE AS NECESSARY.
2. FABRIC SHALL BE REPLACED PROMPTLY
IF FOUND TO BE IN DISREPAIR.
u
SYNTHETIC
II FILTER FABRIC SHALL BE
u BACKFILLED A MIN. OF 8"
3. SEDIMENT DEPOSITS SHALL BE REMOVED
AFTER EACH STORM EVENT AND WHEN
DEPOSITS REACH APPROXIMATELY 113
HEIGHT OF BARRIER.
SYNTHETIC FILTER FABRIC
ATTACHED TO POSTS WITH
APPROVED FASTENERS. PLACE
ON UPHILL SIDE OF FENCE.
POST
SYNTHETIC
FILTER
FABRIC
18" GROUND
MAX.
8'•
EXCAVATE 8"x8" TRENCH UP51-OPE ALONG LINE
OF POSTS. EXTEND FILTER FABRJC INTO TRENCH,
BACKFILL TRENCH AND COMPACT SOIL
TEMPORARY SEEDING
General SPECIFICATIONS
Areas where no substantial or significant progress Is made for
more than 15 days should be temporarily seeded as
follows. All areas should be seeded, mulched, and tacked.
Incidental grading shall not constitute substantial or significant
progress in construction activity. Seeding and mulching shall
be done immediately following construction. All disturbed
areas shall be dressed to a depth of 8 Inches. The top
3 Inches shall be pulverized to provide a uniform seedbed.
?u
viZ:
o ?z
``11 V
?z
Uz
Q0?
?hE
Z
?aL
w?
z?
oa
z?
W.,
w
Z
O
Q
Seeding
Seeding Dates
May I - Aug. 15
Aug. 15-May I
Seedinq Species
German Millet
Rye (grain)
Rate (Ibslacre)
40
GO
Soil Amendments
Follow recommendations of soil tests or apply 2,000 Ibslacre
ground agricultural limestone and 750 Ibslacre 10-10-10
fertilizer.
Mulch
Mulching shall consist of small grain straw applied at a rate
of 70 Ibs.l l 000 sq.ft. Mulched areas shall be mechanically
tacked in place (or other approved tacking method).
No asphalt shall be used for tacking. Use jute, excelsior
matting or similar material to cover exposed areas of
concentrated flow.
Maintenance
Inspect and repair mulch frequently. Refertilize and reseed as
required to maintain vigorous temporary vegetative cover
during construction.
.? C A
o a3 ?' 'L
¢ r Y? A
_ SEAL D
24993

C
Q
a
nm8 :a?
=g=b
J
M/
Z
0?
ZZc
Oo
W/
SHEET
C7