20071108 Ver 1_Enhancement Plan_20070622

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STREAM STABILIZATION AND EHNHANCEMENT
FOR
BROOKSHIRE PARK
WATAUGA COUNTY, NORTH CAROLINA
Prepared for
NC DIVISION OF WATER QUALITY
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May 25, 2007
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Brookshire Park -Repair Plan June 2007
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 New River that were impacted by flood flows from Hurricane Frances and Ivan in September
' 2004. The severely eroded stream banks consist of exposed soil on steep to near vertical slopes,
which, if transported during another high flow event, could cause increased erosion and
sedimentation in vulnerable High Quality Waters. In the mitigation plan, deposited sediment
' will be removed in anon-destructive manner in both reaches. The reach will also be restored
with a natural channel design philosophy and consist of grade control structures strategically
placed throughout.
The work described in this Stream Re air and Bank Stabilization Plan Re air Plan is ur ent
p ( p ) g
and compelling work under the Watauga Soil and Water Conservation District (SWCD) utilizing
funds appropriated from the Clean Water Trust Fund. Watauga County and the SWCD are the
sponsors and responsible party for this work. Work on the site consists of repairs and
stabilization efforts only, and is not considered natural channel restoration or enhancement work.
However, some methods and approaches utilized in the proposed repairs 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 the designated surface waters will be supervised by trained personnel from
' McGill Associates, P.A.
2. SITE DESCRIPTION
Brookshire Park Site -New River (WS-IV, C +) -The repair site is approximately 500 feet in
' length and is located along the South Fork of the New River in Watauga County, NC. The
Rosgen stream classification for this section of the New River is F. This classification is
indicated by entrenched meander, incised channel and high width to depth ratio subjective to
very high erosion during significant storm events. This area is located adjacent to Brookshire
Park located on Brookshire Road which intersects with Highway 421(King Street), 1500 feet
south of the site. Please refer to the repair plans for photographs, mapping imagery, and details
of existing site conditions.
Approximately 500 feet of the left channel bank (left and right are referenced while looking
downstream) is severely damaged through bank erosion and soil loss. The left bank repair is on
Brookshire Park property owned by Watauga County. The right bank repair is approximately
200 feet of bank where a point bar will be removed to compensate for bank replacement on the
other side. The right bank property is owned by Ms. Colene Bolick.
Banks along the reach range in height from roughly 10 to 20 feet and are near vertical in much of
the reach. Based on a review of available mapping and site conditions, the bank loss varies from
10 to 20 feet along the repair reach. Some site material may be used for the repair area but the
vast majority of the required borrow material will have to be hauled in to the site.
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
Access is not an issue. Both the park side and the Bolick property have easy access to the
impaired area. Utilities will be located and marked by a contractor prior to any construction.
The disturbed area for the proposed repair and stabilization is approximately 0.40 acres, and is
exempt from an Erosion Control Permit from Land Quality. The Brookshire Park site work
described in this plan will need to be permitted by the U.S. Army Corps of Engineers (Section
404 permit) and the N.C. Department of Environment and Natural Resources, Division of Water
Quality (Section 401 Water Quality Certification).
3. TECHNICAL DESCRIPTION
On 2007, members of the McGill Associates design team visited the Brookshire Park site. While
on site, the team members observed the existing channel banks, topography of the area, and
specific locations where the majority of sediment had been deposited. Photos were taken of the
project site and field notes were prepared for use in the design process.
McGill Associates Surveyors conducted an updated detailed survey of the stream Reach corridor.
The survey consisted of stream channel cross-sections, point elevations, and the location of
existing roads, pipes, and structures. The survey was used to generate an accurate representation
of the stream and surrounding topography.
After completing the field visit, a preliminary review and evaluation was performed of available
site mapping to include USGS 7.5 minute Quad data, Digital Orthophoto Quad (DOQ) data
(1998), Color Infrared imagery (2004), Watauga County Soil Survey map sheets, as well as other
available map data. Using Arc-GIS (with available extensions) and Digital Elevation Models
(DEM) from the NC Floodplain Mapping Project, the contributing drainage area (at the project
site) is approximately 35 square miles. Available hydrologic and hydraulic data for the project
site was also researched, including a review and evaluation of available Regional Curve data
(NCSU -Stream Restoration Institute (SRI), Preliminary Mountain Curve) for incorporation into
the repair design process as applicable.
Using the data collected during field visit, a rough site sketch was developed defining existing
conditions with annotated hand notes, descriptions and repair recommendations. These notes
were later refined for use in the development of the repair concept for the site roughly defining
the locations, sizes, and types of modifications and features proposed for construction at the site.
In addition to the Existing Site Plan, the Proposed Repair Plan was also developed including,
plan view, typical repaired bank cross-sections, construction details for typical site features,
technical construction specifications, and planting recommendations for the recommended
repairs.
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
4. DESIGN CONSIDERATIONS
As described in the technical proposal, a range of possible repair alternatives were considered for
the Brookshire Park site. These repair alternatives included: 1) Repair-in-Place only, 2) Repair-
in-Place augmented with In-Stream structures and 3) Stream Restoration - "Natural Channel
Design."
As understanding of this site has increased, and in an effort to streamline the approach to repairs,
further repair alternatives were developed. In design development, an effort was made 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
intentional that repair and stabilization methods would be constructed with commonly used and
readily available construction materials.
Recommended repairs have 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. This approach is
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 of rock
resulting in considerably high repair costs. And 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 crucial to a variety of aquatic species.
The selected repair alternative for the site includes repairing the failed banks back to their pre-
disturbance location through fill placement and augmenting the repair with in-stream structures.
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 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 in-stream structure reinforcement,
would likely be insufficient to withstand future flood flows. The installation of in-stream rock
(boulder) or log structures will reduce the near bank stresses along the repair reach to protect the
rebuilt banks. Additionally, the repair also calls for the installation of toe stabilization as
necessary along the reach in excessive scour to tie-in to existing stabile banks. The designer may
also designate other areas requiring toe stabilization at the time of construction.
This approach to bank repairs will improve the overall potential for the success of the repair.
The installation of structures will protect channel banks with a significantly smaller rock volume
(when compared to bank armoring) thereby reducing overall repair costs. One additional benefit
to this type of repair is the placement of a natural (less structural) repair that is more appropriate
for the reach and generally more aesthetically desirable.
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
5. PROPOSED REPAIR PLAN
During the evaluation of the site, available information 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 the Repair Plan. Typical cross-sections for the repair were then developed to depict
proposed repair characteristics including, but not limited to, slopes and slope breaks, stabilization
methods, and planning recommendations.
Notes:
The repair plan is designed to repair and stabilize the banks 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 repairs 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, observations of undisturbed channel segments
immediately upstream and downstream of the site, and experience on similar
projects.
As shown on the attached repair plans and design details, it is recommend that the repaired slope
be reconstructed and backfilled with suitable fill or 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. The Repair Plan calls for the incorporation of a single repair
option, Option 3. See the proposed repair cross-sections depicted in the Repair Plan.
REPAIR OPTION 3
Grading & Stabilization
The lower bank zone should be graded (or constructed) with the previously described materials
at a slope not in excess of 1 H:1 V to the approximate elevations described in the repair cross-
section. As this zone is within the "active channel", it should be stabilized with either coir fiber
matting or a combination of Enkamat and Flexterra Growth Medium. This zone should be over
seeded with the appropriate temporary and permanent grasses and vegetated with the prescribed
natural vegetation.
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
The mid-bank zone should be similarly graded (or constructed) with the above described
materials at a slope not in excess of 1 H:1 V to the approximate elevations described in the repair
cross-section. As this zone is out of the "active channel", it should be lined with excelsior (wood
fiber) erosion control matting (or equivalent) and planted with prescribed shrubs and trees.
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", it
should be lined with excelsior (wood fiber) erosion control matting (or equivalent) and planted
with prescribed shrubs and trees.
In-Channel Structures
As previously described, the repaired channel banks will be augmented with in-channel
structures including rock (boulder) and/or log cross vanes. These structures will be utilized to
reinforce and stabilize the proposed bank repairs. All structures will be constructed out of
natural materials, typically consisting of locally quarried boulders or logs. The upstream side of
these structures will be lined with anon-woven fabric and backfilled with appropriate borrow
material or coarse aggregate as approved by designer to improve stability and reduce the
potential for piping.
These in-stream structures concentrate stream energy toward the center of the channel and away
from the near-bank areas. In doing so, the structure reduces shear stress along the banks and
prevents bank erosion. In this case, the structures allow for an additional measure of protection
of the repaired bank until vegetation can take hold. This approach would also likely reduce the
overall volume of stream stabilization material that must be hauled to the site and reduces costs
for the overall repair.

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The attached Repair Plan generally describes the number and type of in-channel structures to be
installed. The designer will determine the exact spacing, length, and location of the in-channel
structures at the time of construction. For planning purposes, a minimum of two (2) cross vanes
will be installed along the repair reach. Across vane structure detail is shown in the Preliminary
Drawings.
Toe Stabilization Measures
Because of site conditions, supplemental stabilization of the bank toe is necessary. Banks will be
reconstructed using rows of 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 these structures will be lined with anon-woven geotextile fabric and backfilled with
suitable material (borrow or other available coarse aggregate as approved by the designer). This
material combination with a more suitable slope, 1 H:1 V or less will improve stability and reduce
the potential for future scour. A detail of a typical toe stabilization is shown in the Preliminary
Drawings.
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Brookshire Park -Repair Plan
Watauga County
Vegetated Buffer
June 2007
McGill Associates, P.A.
A vegetated buffer will be established along the restored Reaches and stormwater conveyance
channel. The buffer will be seeded and planted with the appropriate native riparian vegetation
and will provide channel and overbank 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/or container 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. The
majority of the planting efforts (with the exception of site transplants) should be conducted 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 engineer.
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 must include a minimum of three (3) of the seven (7) shrubs
listed in the planting schedule.
' A representative from McGill Associates will be on site to observe and direct planting efforts
associated with the buffer restoration. The engineer must approve substitution of shrub species
in advance.
t Temporary and/or permanent seeding measures will be applied to areas disturbed during grading
operations to allow for localized stabilization while riparian species establish themselves.
Technical Specifications are attached in Appendix A. Preliminary Drawings for the proposed
Stream Restoration/Stabilization Plan are attached in Appendix B and include proposed stream
alignments, typical cross-section, proposed structures, structure details, erosion and sediment
control details, and a planting schedule and details are attached.
6. REGULATORY REQUIREMENTS
401 WATER QUALITY CERTIFICATION (Mandatory Requirement based on expected
Certification conditions) -The following mandatory conditions apply to all repair sites:

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1. Erosion and 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
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Brookshire Park -Repair Plan
Watauga County
June 2007
McGill Associates, P.A.
requirements specified in the most recent version of the North Carolina
Sediment and Erosion Control Planning and Design Manual. The devices
shall be maintained on all construction sites, borrow sites, and waste pile
(spoils) 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
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 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 within Wetlands or Waters -Sediment and
erosion control measures shall not be placed in wetlands or water 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 (6)
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 a 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 Flexible
Growth Media 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 zones.
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
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
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 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) of 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 and stabilizing of 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. 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 channels 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.enr.state.nc.us/wrp/pdf/buffers.pdfJ
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
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Brookshire Park -Repair Plan June 2007
Watauga County McGill Associates, P.A.
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.
r 13. The Permittee will provide on-site supervision of stability work including, but not limited
to, bank re-shaping, 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.
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 Notification -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 - NTU) 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 fina1404 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 before any construction begins. During actual construction, inspectors will direct
I contractors to observe and apply good construction practices and the requirements described in
this document.

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Brookshire Park -Repair Plan
Watauga County
APPENDIX A
June 2007
McGill Associates, P.A.
TECHNICAL SPECIFICATIONS
FOR
STREAM REPAIRS AND BANK STABILIZATION
PROJECTS

TECHNICAL SPECIFICATIONS TABLE OF CONTENTS
t TITLE PAGE

TABLE OF CO NTENTS
L 6.4 FILL MATERIALS 6
SECTION 1 -GENERAL REQUIREMENTS 1 6.5 PREPARATION 6
6.6 BACKFILLING, FILLING, AND SURFACE
1.1
1.2 SECTION INCLUDES
SUMMARY OF WORK 1
1
6.7 PREPARATION
COMPACTION AND QUALITY CONTROL 6
6
].3 WORKFORCE EXPERIENCE 1 6.8 PROTECTION OF FINISHED WORK 7
1.4 SPECIFIC EQUIPMENT REQUIREMENTS 1 6.9 TOLERANCES 7
1.5 MEASUREMENT AND PAYMENT 1
SECTION 7 -CHANNEL PROTECTIVE LININGS AND IN-
SECTION 2 -TEMPORARY FACILITIES 1 STREAM STRUCTURES 7
2.1 SECTION INCLUDES 1 7.1 SECTION INCLUDES 7
2.2 MEASUREMENT AND PAYMENT 1 7.2 MEASUREMENT AND PAYMENT 7
2.3 TEMPORARY SANITARY FACILITIES 1 7.3 REFERENCES 7
2.4 BARRIERS 1 7.4 GENERAL 7
2.5 TRAFFIC CONTROL 1 7.5 MATERIALS 7
2.6 STAGING AREA 1 7.6 IN-STREAM STRUCTURES & TOE
2.7 COORDINATION WITH OWNER AND OTHER STABILIZATION 9
CONTRACTORS 2 7.7 CHANNEL PROTECTIVE LININGS 9
2.8 PROTECTION OF EXISTING FACILITIES, 7.8 OVERBANK PROTECTION 9
STRUCTURES, AND SERVICES 2
2.9 PROTECTION OF INSTALLED WORK 2 SECTION 8 -STREAM BANK PLANTING 10
2.10 PROGRESS CLEANING & WASTE REMOVAL 2
2.11 EROSION CONTROL 2 8.1 SECTION INCLUDES 10
2.12 FINAL CLEANING 2 8.2 MEASUREMENT AND PAYMENT 10
8.3 REFERENCES 10
SECTION 3 -QUALITY CONTROL 3 8.4 GENERAL 10
8.5 LIVE STAKES 10
3.1 SECTION INCLUDES 3 8.6 PLANT SUBSTITUTION 11
3.2 MEASUREMENT AND PAYMENT 3 8.7 PLANTING PREPARATION 11
3.3 REFERENCES 3 8.8 STREAM BANK PLANTING 11
3.4 CONSTRUCTION OBSERVATION 3 8.9 PLANTING PERIODS 11
3.5 PLANTING OBSERVATION 3 8.10 REMOVAL OF NUISANCE VEGETATION 11
8.11 WATER FOR PLANTINGS 11
SECTION 4 -SITE PREPARATION 4 8.12 SUBMITTALS 11
4.1 SECTION INCLUDES 4 SECTION 9 -BUFFER PLANTING 12
4.2 MEASUREMENT AND PAYMENT 4
4.3 UTILITY LOCATION AND PROTECTION 4 9.1 SECTION INCLUDES 12
4.4 SEDIMENTATION AND EROSION CONTROL 4 9.2 MEASUREMENT AND PAYMENT 12
4.5 CONSTRUCTION LAYOUT 4 9.3 REFERENCES 12
4.6 CLEARING, GRUBBING, AND STRIPPING 4 9.4 GENERAL 12
4.7 DEWATERING 4 9.5 CONTAINER GROWN PLANTS 12
9.6 BARE ROOT PLANTS 12
SECTION 5 -EXCAVATION 5 9.7 PLANT SUBSTITUTION 12
9.8 PLANTING PREPARATION 12
5.1 SECTION INCLUDES 5 9.9 PLANTING PERIODS 12
5.2 MEASUREMENT AND PAYMENT 5 9.10 REMOVAL OF NUISANCE VEGETATION 13
5.3 REFERENCES 5 9.11 WATER FOR PLANTINGS 13
5.4 PREPARATION 5 9.12 SUBMITTALS 13
5.5 EXCAVATING 5
5.6 PLANTING PREPARATION 5 SECTION 10 -PERMANENT SEEDING 13
5.7 TOLERANCES 5
10.1 SECTION INCLUDES 13
SECTION 6 -FILLING, BACKFILLING AND COMPACTION 6 10.2 MEASUREMENT AND PAYMENT 13
10.3 REFERENCES 13
6.1 SECTION INCLUDES 6 10.4 GENERAL 13
6.2 MEASUREMENT AND PAYMENT 6 10.5 SEEDBED PREPARATION 13
' 6.3 REFERENCES 6 10.6 SEEDING 13
10.7 SEEDING DATES 14
11

10.8 SOIL AMENDMENTS 14 11.5 SILT FENCE 15
10.9 MULCH 14 11.6 TEMPORARY SEEDING 15
SECTION 11 -SEDIMENT & EROSION CONTROL 15 SECTION 12 -SITE MAINTENANCE 16

11.1 SECTION INCLUDES 15 12.1 SECTION INCLUDES 16
11.2 MEASUREMENT AND PAYMENT 15 12.2 MEASUREMENT AND PAYMENT 16
11.3 REFERENCES 15 12.3 EXECUTION 16
11.4 MATERIALS 15

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SECTION I -GENERAL REQUIREMENTS
1.1 SECTION INCLUDES
General requirements and information related to the work including,
summary of work, measurement and payment, and reference to
SPECIAL CONTRACT PROVISIONS.
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, in-channel structure installation, 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
in-stream structures (i.e. rock cross-vanes).
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 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 SPECIAL CONTRACT PROVISIONS. 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 SPECIAL CONTRACT PROVISIONS
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 ofnon-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.
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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. Access to construction-site shall be
limited to the entrance designated on the plans. 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 Owner and other contractors 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 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
Final Application for Payment inspection. Restore existing facilities
used during construction to original condition.
2.11 EROSION CONTROL
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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--
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SECTION 3 -QUALITY CONTROL
3.1 SECTION INCLUDES
Observation of construction operations and buffer and stream bank
planting.
3.2 MEASUREMENT AND PAYMENT
See SPECIAL CONTRACT PROVISIONS. Unless indicated
otherwise, the Owner will arrange and pay for initial planting
observation for quality assurance. Re-observation testing required
because ofnon-conformance to plans or Specifications shall be charged
against any money owed to Contractor. Contractor is encouraged to
perform quality control checks and testing at Contractor's expense to
reduce the possibility of rejected work.
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.
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 ornon-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--
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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 SPECIAL CONTRACT PROVISIONS
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
Contractor shall be responsible for preventing erosion on the site and
sedimentation offthe 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.
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--
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.
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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 SPECIAL CONTRACT PROVISIONS
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 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 stable slope or flatter until
shored. Grade top perimeter of excavation to prevent surface water
from draining into excavation. Where required to protect utilities,
perform excavation by hand.
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--
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.
t 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
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 six
(6) inches.

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SECTION 6 -FILLING, BACKFILLING AND COMPACTION
6.1 SECTION INCLUDES
Provide all necessary equipment and labor to perform filling,
backfilling, 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 SPECIAL CONTRACT PROVISIONS
6.3 REFERENCES
ASTM D698 -Test Methods for Moisture-Density Relations of Soils
and Soil-Aggregate Mixtures, Using 5.5 Ib. Rammer and 12-inch Drop.
ASTM D1556 -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 channel bed material or
ordinary fill as shown on the Drawings and as needed to complete
work. Fill for Lower-Bank Zone shall consist of chanriel 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
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. Make gradual grade changes. Blend slope into
level areas.
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 1 feet 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 1H: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
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Engineer based on-site or soil conditions. Provide compaction as
directed by the Engineer. Lift thickness shall not exceed 6".
r 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--
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Stream Stabilization/Restoration Page 7
River Walk, Highlands NC
SECTION 7 - C1-IANNEL PROTECTIVE LININGS AND IN-
STREAM STRUCTURES
7.1 SECTION INCLUDES
Temporary and permanent channel erosion protective linings and in-
stream rock and log structures.
7.2 MEASUREMENT AND PAYMENT
See SPECIAL CONTRACT PROVISIONS
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.
In-stream Structures will be installed to provide additional bank
protection where shown on the Drawings. Materials to be used in
Channel Protective Linings and the In-Stream Structures 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.
The in-stream structures shall be constructed of the materials specified
in this section and as shown on the Drawings. Any portion of the
structure which is disturbed after placement shall be repaired. Any
portion of the structure 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 biodegradable straw fiber matting and three-
dimensional turf reinforcement matting (TRM) 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).
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Matting for erosion control in areas other than stream banks with mild
slopes shall be machine-produced 100% biodegradable mat with 100%
straw fiber matrix with a functional longevity of approximately 12
months. The blanket shall be of consistent thickness with the straw
evenly distributed over the entire area of the mat. The blanket shall be
covered on the top side with 100% biodegradable woven natural
organic fiber netting. The netting shall consist of machine directional
strands formed from two intertwined yarns with cross directional
strands interwoven through the twisted machine strands (commonly
referred to as a Leno weave) to form an approximate 0.50 x 1.00 inch
(1.27 x 2.54 cm) mesh. The blanket shall be sewn together with
biodegradable thread on 1.50 inch (3.81 cm) centers. The blanket shall
be manufactured with a colored line of thread stitched along both outer
edges (approximately 2-5 inches [5-12.5 cm] from the edge) to ensure
proper material overlapping. The straw erosion control blanket shall be
S75 BN as manufactured by North American Green, or equivalent.
Erosion control blanket shall have the following properties:
Material Content
Matrix 100% Straw Fiber
(0.50 lbs/ydz) (0.27 kg/mz)
Netting One side only, Leno woven 100% biodegradable natural
organic fiber (9.301bs/1,000 ftz [4.50 kg/100 mz]
approximate weight)
Thread Biodegadable
Physical Specifications (per roll)
English Metric
Width 6.67 ft f 5% 2.03 m
Length 108.00 ft f 5% 32.92 m
Weight 46.401bs f 10% 21.05 kg
Area 80 yd2 66.89 m2
Stitch Spacing 1.50 inches 3.81 cm
Matting for all channel banks shall consist of Profile's Green Armor
System. The Green Armor System consists of Flexterra, a
hydraulically-applied Flexible Growth Medium (FGM) composed of
long strand, thermally processed wood fibers, crimped, interlocking
fibers and performance enhancing additives. The FGM requires no
curing period and upon application forms an intimate bond with the
soil surface to create a continuous, porous, absorbent and flexible
erosion resistant blanket that allows for rapid germination and
accelerated plant growth. Flexterra shall be applied per manufactures
specifications and recommendations. The Green Armor System also
incorporates Colbond's Enkamat 7010 (52H:1V) and 7020 (<1H:1V).
Enkamat 7010 and 7020 are athree-dimensional turf reinforcement mat
(TRM) made of continuous monofilaments fused at their intersections.
Ninety-five (95%) percent of the Enkamat is open and available for
soil, mulch, and root interaction with filaments, creating the most
effective Root Reinforcement Mat (RzM) available. Enkamat is
manufactured from nylon to eliminate the buoyancy factor associated
with submerged conditions and provide permanent TRM protection in
vegetated channels as well as on slopes.
Enkamat 7010 RZM shall have the following properties:
Physical Specifications (per roll)
En lush Metric
Thickness 0.4 in 10 mm
Mass/Unit Area 8.0 oz/yd2 271 g/m2
UV Stability 80 % strength retained
Width x Length 3.25 x 500 0.99 x 152
6.33 x 90 1.93 x 27.5
Area 180 yd2 150 m2
63.3 yd2 53 m2
Weight 921bs 42 kg
321bs 15 kg
Enkamat 7020 RzM shall have the following properties:
Physical Specifications (per roll)
En Ig ish Metric
Thickness 0.75 in 19 mm
Mass/Unit Area 12.0 oz/yd2 407 g/m2
UV Stability 80 % strength retained
Width x Length 3.25 x 277 0.99 x 84.4
6.33 x 90 1.93 x 27.5
Area 100 yd2 150 m2
63.3 yd2 53 m2
Weight 771bs 35 kg
54 lbs 25 kg
Profiles' Green Armor System shall be installed per manufactures
specifications and recommendations.
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 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.
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
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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 6' x 3' x 2' shall be individually picked by
Contractor from the quarry or the on-site stockpile for use in in-stream
structure construction. Boulders as small as 4' x 2' x 2' maybe 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 IN-STREAM STRUCTURES & TOE STABILIZATION
The work covered by this section consists of the construction of in-
stream structures including J-hooks, cross-vane structures, and rock toe
stabilization.
The quantity of in-stream structures and length of toe stabilization to be
constructed will be affected by actual conditions that occur during the
construction of the project. The type and quantity of structures may be
increased or decreased at the direction of the Engineer. 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
structures will be determined during construction by the Engineer and
may not reflect the construction Drawings. In-stream structures and 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.
Place Single Rock or Wood Vanes as shown on the Drawings. Footer
rocks shall be installed to define shape of in-stream rock structures.
Footer rocks shall be installed such that their long dimension is
oriented in the direction of flow. No gaps shall be left between footer
rocks. Minimum footer rock depth below the proposed ground surface
of the stream bed shall be 4 feet. Rock sills shall extend a minimum of
3 feet beyond bankfull (perpendicular to stream flow) as indicated on
plans. Geotextile shall be placed over structures and backfilled with
aggregate as shown on plans.
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 4 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 Enkamat 7010 or 7020 turf reinforcement mat (TRM) where
applicable 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 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 on 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 OVERBANK 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 4 inches. Final grade with topsoil shall be as shown
on Drawings. Topsoil shall be prepared with fertilizer and lime, and
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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 NA Green S75 BN or equivalent to slope. Matting shall be
unrolled with netting material on top and blanket material in contact
with the soil. (Note: some straw fiber 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
I2 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 lfoot (12 inch) centers. All standard anchoring staples shall
be 18 inches in length. Staples shall be driven in with a wooden
mallet. Care shall betaken 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--
SECTION 8 -STREAM BANK PLANTING
8.1 SECTION INCLUDES
Provide all necessary equipment and labor to implement stream bank
planting plan.
8.2 MEASUREMENT AND PAYMENT
See SPECIAL CONTRACT PROVISIONS
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
The Baily Hortorium (1976 MacMillan Publishing Co., Inc.)
American Standard for Nursery Stock, latest edition
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. Botanical names referred to in the Drawings are taken
from "Hortus Third", the Baily Hortorium (1976 MacMillan Publishing
Co., Inc.). 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 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.
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.
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
Stream Stabilization/Restoration
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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 6 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
trees and 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 1 and November 15, 2007.
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. See SPECIAL CONTRACT PROVISIONS.
8.11 WATER FOR PLANTINGS
vegetation and plantings shall meet the requirements of Class C fresh
waters as defined in 15 NAC 2B.200. See SPECIAL CONTRACT
PROVISIONS.
8.12 SUBMITTALS
Contractor shall submit purchase certificates (or other proof) of all
species planted.
--END OF SECTION--
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
1
Stream Stabilization/Restoration
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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 SPECIAL CONTRACT PROVISIONS
9.3 REFERENCES
The Baily Hortorium (1976 MacMillan Publishing Co., Inc.)
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 stringent requirements shall
apply.
9.4 GENERAL
All plants shall be as called for by these Specifications. Bare rooted
plants maybe 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. Botanical names referred to in
the Drawings are taken from "Hortus Third", the Baily Hortorium
(1976 MacMillan Publishing Co., Inc.). 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,
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
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 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.
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 heary 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 1 and November 15, 2007. However,
planting can not begin until all stream repairs have been completed.
Stream Stabilization/Restoration
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Technical Specifications
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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. See SPECIAL CONTRACT PROVISIONS.
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 2B.200. See SPECIAL CONTRACT
PROVISIONS.
9.12 SUBMITTALS
Contractor shall submit purchase certificates (or other proof] of all
species planted.
--END OF SECTION--
SECTION 10 -PERMANENT SEEDING
10.1 SECTION INCLUDES
Permanent seeding for permanent site stabilization.
10.2 MEASUREMENT AND PAYMENT
See SPECIAL CONTRACT PROVISIONS
10.3 REFERENCES
The following specifications and methods form a part of this
Specification:
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.
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 top-soiling 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, seedbeds may be
prepared directly on the exposed finished grade or topsoil may be
imported.
If topsoil is used, it should be spread to a uniform depth of four to 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 roughness prior to planting.
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.
Apply lime and fertilizer evenly across seedbed and work into the top
4-6 inches of soil by disking or other suitable means. Operate
machinery on the contour.
10.6 SEEDING
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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.
Stream Stabilization/Restoration
River Walk, Highlands NC
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Technical Specifications
February 22, 2007

Anchor mulch with netting in areas subject to concentrated flow. In
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 seeds and mulch at the rates indicated below.
Areas with Channel Protective Linings:
Species Rate (lbs/acre)
Big Bluestem 4
(Andorpogon geradii)
Little Bluestem 4
(Schizachyrium scoparium)
Indian Grass 4
(Sorghastrum nutans)
Switchgrass 4
(Panicum virgatum)
Purple Love Grass 3
(Eragrostis spectabilis)
Deer Toungue 3
(Panicum clandestinum)
Purple Top 3
(Tridens flavus)
All other disturbed areas:
Species Rate (lbs/acrel
Big Bluestem 4
(Andorpogon geradii)
Little Bluestem 4
(Schizachyrium scoparium)
Indian Grass 4
(Sorghastrum nutans)
Switchgrass 4
(Panicum virgatum)
Purple Love Grass 3
(Eragrostis spectabilis)
Deer Toungue 3
(Panicum clandestinum)
Purple Top 3
(Tridens,~lavus)
Mulch Rate (lbs/IOOOsg.~)
Grain Straw 70
10.7 SEEDING DATES
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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 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:1 V.
--END OF SECTION--
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River Walk, Highlands NC
Page 14
Technical Specifications
February 22, 2007

SECTION 11 -SEDIMENT & EROSION CONTROL

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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 SPECIAL CONTRACT PROVISIONS
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, 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 5' and
minimum width of ] 3/4". 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'/z gauge. The silt fence filter fabric shall meet the following
minimum criteria:
Grab Tensile Strength I OO lbs.
Grab Tensile Elongation IS
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
Stream Stabilization/Restoration Page 15
River Walk, Highlands NC
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 aze 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 temporazily 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 2,000 pounds per acre
immediately before plowing.
Grass seed shall be applied at the following rate:
Tvne Dates Possible Rate
Rye (Grain) Aug. 15 -May 1 601bs./ac.
German Millet Mayl -Aug 15 40 lbs./ac.
10-10-10 fertilizer shall be applied to all disturbed azeas at a rate of 750
pounds per acre, and mulching shall consist of small grain straw
applied a rate of 70 pounds per 1000 square feet (701bs./1000sq.ft.).
Mulch shall be anchored by roving or netting.
--END OF SECTION--
Technical Specifications
February 22, 2007

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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 SPECIAL CONTRACT PROVISIONS
12.3 EXECUTION
Contractor shall revisit the site as required in the special contract
provisions 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--

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River Walk, Highlands NC
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Brookshire Park -Repair Plan
Watauga County
APPENDIX B
PRELIMINARY DRAWINGS
June 2007
McGill Associates, P.A.

ENGINEERING DESIGN FIRM:
McGILL ASSOCIATES
' 55 BROAD STREET
ASIIEVILLE, NC 28801
[phone]
PREPARED FOR:
WATAUGA COUNTY
33 I QUEEN STREET, SUTE A
' BOONS, NORTH CAROLINA 28607
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CONSTRUCTION DRAWINGS FOR:
WATAUGA COUNTY
BROOKSFIIRE PARK
STABILIZATION-ENHANCEMENT PLAN
SOUTH FORK OF NEW RIVER
WATAUGA COUNTY, NC
CONTENTS:
C-001 . COVER, CONTENTS, ~ VICINITY MAP
C-002. GENERAL NOTES
C-003. SITE PICTURES
C- 100. SITE OVERVIEW -EXISTING CONDITIONS
C- I 0 I . STABILIZATION PLAN
C-900. STANDARD DETAILS -STREAM RESTORATION/STABILIZATION
CONCEPT ONLY
NOT FOR
CONSTRUCTION
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GENERAL NOTES:
THIS PROJECT CONSISTS OF STREAM ENHANCEMENT/STABILIZATION OF APPROXIMATELY
500 FEET OF THE SOUTH FORK OF THE NEW RIVER:
THE C~ITRACTOR SHALL 8E RESPONSIBLE FOR THE COMPLEAl10N OF THE WORK UNDER
THE FOLLOWING CONDITIONS;
1. THE SITE PLAN IS ESTABLISHED FROM TOPOGRAPHIC SURVEY(S) PREPARED BY
MCGILL ASSOCIATES, DATED 3/12/2007. VERIFY ACCURACY OF SURVEY(S), SITE
PLAN, ETC. PRIOR TO BEGINNING CONSTRUCTION. NOTIFY ENGINEER IMMEDIATELY OF
ANY DISCREPANCIES.
2. FINISH GRADE TOLERANCES SHALL BE AS NOTED IN THE SPECIFICAl10NS. THE
ENGINEER MAY MAKE GRADE CHANGES AS REQUIRED IN THE FIELD WITHOUT
AFFECTING THE UNIT 81D PRICE FOR UNCLASSIFIED EXCAVATION.
3. UNLESS OTHERWISE STATED, ALL F1LL AREAS MALI BE CONSTRUCTED IN LAYERS OF
8° MAXIMUM THICKNESS, WITH WATER ADDED OR SOIL CONDI110NED TO THE OPTIMUM
MOISTURE CONTENT AS DETERMINED BY THE ENGINEER AND COMPACTED WITH A
SHEEP'S FOOT ROLLER TO A COMPACTION EQUAL TO OR GREATER THAN 95% (100%
IN THE TOP 2' OF THE 5U8 GRADE BELOW ROADWAYS AND PARKING LOTS) OF THE
DENSITY OBTAINED BY COMPACTING A SAMPLE OF THE MATERIAL IN ACCORDANCE
WITH THE STANDARD PROCTOR METHOD OF MOISTURE-DENSITY RELATIONSHIP TEST,
ASTM D698 OR AASHTO-99 UNLESS SPECIFlED IN OTHER SPECIFCATIONS.
4. ALL SOIL EROSION CONTROL MEASURES REQUIRED BY THE GRADING PLAN SHALL BE
PERFORMED PRIOR TO GRADING, CLEARING OR GRUBBING. ALL EROSION CONTROL
DEVICES SUCH AS SILT FENCES, ETC., SHALL BE MAINTAINED IN WORKABLE
CONDITION FOR THE LIFE OF THE PROJECT AND SHALL BE REMOVED AT THE
COMPLE110N OF THE PROJECT ONLY ON THE ENGINEER'S APPROVAL. PAYMENT SHALL
BE CONSIDERED INCIDENTAL TO CLEARING AND GRUBBING. IF DURING THE LIFE OF
THE PROJECT, A STORM CAUSES SOIL EROSION WHICH CHANGES FINISH GRADES OR
CREATES °GULLIES° AND "WASHED AREAS", THESE SHALL 8E REPAIRED AT NO
EXTRA COST, AND ALL SILT WASHED OFF OF THE PROJECT SITE ONTO ADJACENT
PROPERTY SHALL BE REMOVED AS DIRECTED BY THE ENGINEER AT NO EXTRA COST.
THE CONTRACTOR SHALL ADHERE TO ANY APPROVED EROSION CONTROL PLANS
WHETHER INDICATED IN THE CONSTRUCTION PLANS OR UNDER SEPARATE COVER.
~. DISPOSABLE MATERIAL
a CLEARING AND GRUBBING WASTES SHALL BE REMOVED FROM THE SITE AND
PROPERLY DISPOSED OF BY THE CONTRACTOR AT HIS EXPENSE, UNLESS
SPECIFIED OTHERWISE.
h. SOLID WASTES TO BE REMOVED, SUCH A5 SIDEWALKS, CURBS, PAVEMENT, ETC.,
MAY 8E PLACED IN SPECIFC DISPOSAL AREAS DELINEATED ON THE PLANS OR
REMOVED FROM THE SITE AS REQUIRED BY THE SPECIFICAl10NS. THIS MATERIAL
SHAH HAVE A MINIMUM COVER OF 2'. THE CONTRACTOR SHALL MAINTAIN
SPECIFIED COMPAC110N REQUIREMENTS IN THESE AREAS. WREN DISPOSAL SITES
ARE NOT PROVIDED, THE CONTRACTOR SHALL REMOVE THIS WASTE FROM THE
SITE AND PROPERLY DISPOSE OF IT AT HIS EXPENSE.
c. ABANDONED UTiUIiES SUCH AS CULVERTS, WATER PIPE, HYDRANTS, CASTINGS,
PIPE APPURTENANCES, U1ILITY POLES, ETC., SHALL BE THE PROPERTY OF THE
SPECIFIC UTILITY AGENCY, OR COMPANY HANNG JURISDICTION. BEFORE THE
CONTRACTOR CAN REMOVE, DESTROY, SALVAGE, REUSE, SELL OR STORE FOR HIS
OWN USE ANY ABANDONED UTILITY, HE MUST PRESENT TO THE OWNER WRITTEN
PERMISSION FROM THE UTILITY INVOLVED.
d. ON SITE BURNING IS AN ACCEPTABLE METHOD OF DISPOSING OF' FLAMMABLE
WASTES. WHEN BURNING IS ANTICIPATED, THE CONTRACTOR SHALL BE
RESPONSIBLE FOR OBTAINING AlL NECESSARY PERMITS AND MEETING GOVERNING
CODES. THE CONTRACTOR SHALL NOTIFY THE ENGINEER OR HIS REPRESENTATIVE
AS TO THE SPEGIFIC LOCATION ~ BURNING.
AFTER BURNING IS COMPLETED, PURE ASH MAY BE DISPOSED OF BY MIXING WITH
FILL DIRT. ALL MATERIAL NOT TOTALLY BURNED SHALL BE DISPOSED OF AS
SPECIFIED IN "B" ABOVE. THE CONTRACTOR SHALL NOT HOLD UP WORK PROGRESS
FOR THE PURP05E OF WAITING FORA "BURNING DAY".
(. IN THE EVENT EXCESSIVE GROUNDWATER OR SPRINGS ARE ENCOUNTERED 1MTHIN THE
LIMITS OF CONSTRUCTION, THE CONTRACTOR SHALL INSTALL NECESSARY UNDER
DRAINS ANO STONE AS DIRECTED BY THE ENGINEER. ALL WORK SHALL BE PAID
BASED UPON UNIT BIDS, UNLESS SPECIFlED OTHERWISE.
'. THE CONTRACTOR IS RESPONSIBLE FOR THE COORDINATION OF ADJUSTMENT OF ALL
UTILITY SURFACE ACCESSES WHETHER HE PERFORMS THE WORK OR A U11UTY
COMPANY PERFORMS THE WORK.
s. THE CONTRACTOR SHALI_ CONTROL AlL "DUST° 8Y PERIODIC WATERING AND SHALL
PR041QE ACCESS AT ALL TIMES FOR PROPERTY OWNERS WITHIN THE PROJECT AREA
AND FOR EMERGENCY VEHICLES. ALL OPEN DITCHES AND HAZARDOUS AREAS SHALL
BE CLEARLY MARKED IN ACCORDANCE WITH THE SPECIFICA110NS.
9. ALL AREAS WHERE THERE IS EXPOSED DIRT SHALL BE SEEDED, FERTILIZED AND
MULCHED ACCORDING TO THE SPECIFICATIONS. THE FINISHED SURFACE SHALL BE TO
GRADE AND SMOOTH, FREE OF ALL ROCKS LARGER THAN 3", EQUIPMENT TRACKS,
DIRT CLODS, BUMPS, RIDGES AND GOUGES PRIOR TO SEEDING; THE SURFACE SHALL
BE 1005ENED TO A DEPTH OF 4" TO 6" TO ACCEPT SEED. THE CONTRACTOR SHALL
NOT PROCEED WITH SEEDING OPERATIONS WITHOUT FIRST OBTAINING THE ENGINEER'S
APPROVAL OF THE GRADED SURFACE. ALL SEEDING SHALL BE PERFORMED BY A
MECHANICAL "HYDRO-SEEDER". HAND SEEDING SHALL BE AUTHORIZED ON AN AREA
BY AREA APPROVAL BY THE ENGINEER.
NPDES STORMWATER PHASE II REQUIREMENTS FOR CONSTRUCTION SITES
FEDERAL NPDES STORMWATER PHASE II REQUIREMENTS SHALL BE MET BY THE
CONTRACTOR FOR ALL CONSTRUCTION SITES LARGER THAN ONE ACRE EFFECTIVE
MARCH 10, 2003. THESE REQUIREMENTS ARE SUMMARIZED AS FOLLOWS:
i. IMPLEMENT THE APPROVED EROSION AND SEDIMENTATION CONTROL PLAN AND
KEEP A COPY OF THE PLAN ON SITE. OEVIATIQN FROM THE APPROVED
EROSION AND SEDIMENTATION CONTROL PLAN WILL BE CONSIDERED A
VIOLATION OF THE FEDERAL NPDES GENERAL PERMIT.
?. PREVENT SPIWNG OF FUELS, LUBRICANTS, COOLANTS, HYDRAULIC FLUIDS, AND
ANY O1HER PETROLEUM PRODUCTS ONTO THE GROUND OR INTO SURFACE
WATERS. DISPOSE OF SPENT FUELS APPROPRIATELY.
3. USE HERBICIDES, PESTICIDES, AND FERTILIZER IN A MANNER CONSISTENT WITH
THE FEDERAL INSECTICIDE, FUNGICIDE AND RODENTICIDE ACT 1996 (FIFRA) AND
IN ACCORDANCE WITH MANUFACTURE'S INSTRUCTIONS AND RESTRIC110NS.
4. CONTROL, MANAGE AND DISPOSE OF LITTER AND SANITARY WASTE FROM THE
`STEIN SUCH A MANNER THAT NO ADVERSE IMPACTS TO WATER QUALITY
OCCUR.
.5. INSPECT ALL EROSION AND SEDIMENTAl10N CONTROL FACILITIES AT THE
FOLLOWING INTERVALS
~. AT A MINIMUM ONCE EVERY SEVEN CALENDAR DAYS;
h. IF THE PROJECT DRAINS TO AN IMPAIRED STREAM ON THE LATEST EPA -
APPROVED 303(D) LIST THEN AT A MINIMUM TNACE IN SEVEN
CALENDAR DAYS, AND ;
c. WITHIN 24 HOURS OF ANY STORM EVENT PRODUCING 0.5 INCHES OR
GREATER OF RAINFALL IN A 24-HOUR PERIOD.
MAINTAIN A RAIN GAUGE ON SITE AND KEEP A RECORD OF THE RAINFALL
AMOUNTS AND DATES,
6. OBSERVE STORMWATER RUNOFF DISCHARGES AND LOOK FOR CLARITY,
FLOATING SOLIDS, SUSPENDED OILS, OIL SHEEN AND OTHER OBVIOUS
INDICATORS OF POLLUTION. EVALUATE THE EFFECTIVENESS OF THE EROSION
AND SEDIMENTATION CONTROL MEASURES. IF SEDIMENTATION IS LEAVING THE
AREA, TAKE IMMEDIATE ACTION TO CONTR. THE DISCHARGE AND ELIMINATE
THE OFF SITE DISCHARGE.
'. KEEP A RECORD OF WEEKLY INSPEC110NS, INSPECTIONS AFTER RAINFALL
EVENTS AND OTHER SITE INSPECTIONS. RECORD ANY VISIBLE SEDIMENTATION
FOUND OUTSIDE THE DISTURBED LIMIT AND RECORD MEASURES TAKEN TO
CLEAN UP THE SEDIMENT. MAKE THESE RECORDS AVAILABLE TO THE DIVISION
OF WATER DUALITY OR ITS AUTHORIZED AGENT UPON REQUEST.
8. MAINTAIN EROSION AND SEDIMENT CONTROL MEASURES TO KEEP THEM
OPERATING AT OPTIMUM EFFlCIENCY.
9. CONTACT THE ENGINEER FOR A COPY OF THE GENERAL PERMIT TO DISCHARGE
STORMWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION
SYSTEM (NPDES).
lo. YIOLAT10N5 OF THE NPDES STORMWATER RULES CONSTITUTE A VIOLATION OF
THE FEDERAL CLEAN WATER ACT AND ARE SUBJECT TO CIVIL PENALIZES OF
UP TO X27,000 PER DAY. UNDER STATE LAW, A DAILY CIVIL PENALTY OF
X10,000 PER VIOLATION CAN BE ASSESSED FOR V10LATlON OF TERMS OF THE
PERMIT.
PROJECT DESCRIPTION
TOTAL PROJECT AREA; 7.64 ACRES
DISTURBED AREA: 0.4 ACRES
om:
NORTH CAROLINA LAND DUALITY 5EC110N EROSION CONTROL NOTES
GENERAL: ALL EROSION CONTROL MEASURES ARE TO BE PERFORMED IN STRICT
ACCORDANCE MATH REQUIREMENTS OF THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT
AND NATURAL RESOURCES, DINSION OF LAND RESOURCES, LAND QUALITY SEC110N. THE x
FOLLOWING CONSTRUCTION SEQUENCE SHALL BE COMPLIED WITH FOR ALL WORK. ~ °'
1. PRIOR TO BEGINNING WORK ON THE PROJECT THE CONTRACTOR SHALL OBTAIN FROM THE ~ $
OWNER A COPY OF THE "EROSION AND SEDIMENT CONTROL APPROVAL" FROM THE NORTH (, N
CAROLINA DEPARTMENT OF ENVRONMENT AND NATURAL RESOURCES, DIVISION OF LAND ~
QUALITY, OR THE LOCAL AUTHORIZED PROGRAM. THE APPROVAL NO11CE MUST BE ~
AVAILABLE ON-SITE DURING ALL GRADING AND CONSTRUCTION ACTIVITIES.
?.INSTALL ALL EROSION CONTROL MEASURES AS REQUIRED 8Y THE NORTH CAROLINA ~ z
DEPARTMENT OF ENVIRONMENT AND NANRAL RESOURCES, DIVISION OF LAND RESOURCES, ~ a
LAND QUALITY SECTION. ~
'
NOTE: ALL UTILITY INSTALLATION WITHIN 25
GF A RIVER OR STREAM BANK SHALL RF
INSTALLED PER STREAM BANK PROTEC110N DETAIL. SEEDING AND MULCHING SHALL BE a
COMPLETED DAILY IN AREAS NOTED AS STREAM PROTECTION AREAS. SILT FENCE IN ~ a
THESE AREAS SHALL NOT BE INSTALLED CLOSER THAN 5' FROM CREEK BANK UNLESS
~ ~
FIELD CONDI110NS PREVENT SUFFlCIENT GLARANCE. ALL SILT FENCES SHALL BE w
INSPECTED AND CLEANED AS NEEDED AFTER EACH RAIN. o
?
OBTAIN CERTIFICATE OF COMPLIANCE THROUGH ON-SITE INSPECTION BY A ~
.
REPRESENTATIVE OF THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL Z
RESOURCES, DIVISION OF LAND RES0URCES, LAND QUALITY SEC110N. O
4.PROCEED WITH GRADING, CLEARING AND GRUBBING. NOTE: NO OFF SITE DISPOSAL OF
MATERIAL IS ALLOWED UNLESS THE DISPOSAL SITE HAS AN APPROVED EROSION CONTROL
PLAN.
O
.S. ALL TEMPORARY STREAM AND CREEK CROSSINGS FOR EQUIPMENT DURING CONSTRUCTION ~
SHALL 8E MADE USING TEMPORARY BRIDGES. NO STREAM BANK OR STREAMBED (n U
DISTURBANCE SHALL 8E AVOWED FOR EQUIPMENT CROSSINGS. ~ ~J,J Z

6. SEED AND MULCH DENUDED AREA WITHIN 15 DAYS AFTER FNISHED GRADE ARE W ~
ESTABLISHED. SEED AND SOIL AMENDMENTS SHALL BE PLACED ON A PREPARED SEEDBED
AT THE FOLLOYWNG RATES PER ACRE. AMENDMENTS SHALL BE PLACED ON A PREPARED ~ Z
SEEDBED AT THE FOLLOWING RATES PER ACRE. ~ Q 0
LIME 4,000 LBS ~ ~ 0
FERTILIZER (10-10-10) 1,000 L85 Q
KY-31 FESCUE 100 LBS ~ N
~
STRAW MULCH 60-80 BALES
FOR SEEDING BETWEEN MAY 1 AND AUGUST 31 ADD TO THE ABOVE: ~ J ~
GERMAN MILLET 10 LBS O m Q
SUDAN GRASS 15 LBS Q
FOR SEEDING BETWEEN SEPTEMBER 1 AND APRIL 30 ADD TO THE ABOVE O ~
RYE GRAIN 15 LBS ~
FOR AlL SLOPES 2:1 OR STEEPER ADD TO THE ABOVE:
SERICEA LESPEDEZA 40 LBS
M
W
- IF HYDRO SEEDING, WOOD CELLULOSE MAY BE USED IN ADDITION TO STRAW MULCH AT W
THE RATE OF 1,000 LBS PER ACRE. ~
• ALL SEEDING SHALL BE MAINTAINED, WATERED ETC„ UNTIL A PERMANENT VEGETATIVE ~
GROUND COVER IS ESTABLISHED OVER ALL DISTURBED AREAS, (n
• ALL SLOPES 2;1 OR STEEPER SHALL BE COVERED 8Y EROSION CONTROL MATTING.

NATIVE PLANT SEEDING MIX FOR STREAM OR RIVERBANK STABILIZA110N o ~ ~ 3 3 a
SEEDING FOR STREAM OR RIVERBANK STABILIZATION SHALL BE A MIXTURE OF NATIVE
GRASSES
PLANT
A n a
,
S
ND TREES. NATIVE PLANT MIX VARIATIONS SHALL BE APPROVED BY ,, ,~ Z
m }
m Z w ~
ENGINEER AND INCLUDE THE FOLLOWING: a ••
J w a ~

GRASSES ~
a W
~
a U'
N O
~ O
a U'H
NV'
D: Q U W Q W W2
BIG BLUESTEM 5 LBS/ACRE a o cn o U ~ a c
LITTLE BLUESTEM 5 LBS/ACRE
INDIAN GRASS 5 LBS/ACRE
SYATCHGRASS 5 LBS/ACRE
FOR SEEDING BETWEEN MAY 1 AND AUGUST 31 ADD TO THE ABOVE Z
MILLET 25 LBS/ACRE O
FOR SEEDING BETWEEN SEPTEMBER 1 AND APRIL 30 ADD TO THE ABOVE J ~
GREENRYE 25 lBS/ACRE U

TREES ~
W
51LKY DOGWOOD (CORNUS AMONUM), ~

SILKY WILLOW (SAUX SERICEA), Z
O
~
HAZEL ALDER {ALMUS SERRULATA) Z
~
ELDERBERRY {SAMBUEUS CANADENSIS) Z
O
NOTE: NO FERTILIZER SHALL BE USED WITHIN 10' OF TOP OF STREAM OR RIVER BANK U
7.MAINTAIN SOIL EROSION CONTROL MEASURES UNTIL PERMANENT GROUND COVER IS
ESTABLISHED.
B. REMOVE SOIL EROSION CONTROL MEASURES AND STABILIZE THESE AREAS. SHEET
9.REQUEST FINAL APPROVAL BY THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND C002
NATURAL RESOURCES, DIVISON OF LAND RESOURCES, LAND QUALITY SECTION.
REV:B 25MAY07
~~
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~ ~~

PICTURE LOOKING DOWNSTREAM AT END OF RIFFLE
SECTION. NOTE SEVERE BANK EROSION ON LEFT AND
VEGETATED POINT BAR ON RIGHT. ALSO NOTE TIRE ON
RIGHT HIGHLIGHTED IN RED. PROJECT SCOPE WILL
INCLUDE TO REMOVAL OF ALL SELECTED TRASH AND
DEBRIS FROM PROJECT AREA.
3/1!2007
PICTURE LOOKING DOWNSTREAM AT MIDDLE OF
POINT BAR ON RIGHT. NOTE SEVERE BANK EROSION
ON LEFT AND TREES ABOUT TO FALL IN THE RIVER.
ALSO NOTE LARGE DEBRIS PILE HIGHLIGHTED IN RED.
TO BE REMOVED PER PROJECT SCOPE.
311 /2007
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' PICTURE LOOKING DOWNSTREAM THROUGH A
RIFFLE SECTION. BROOKSHIRE PARK IS
LOCATED ON THE LEFT. PICTURE REPRESENTS
' OVERALL VIEW OF STUDY AREA.
3/1!2007

PICTURE LOOKING TOWARDS BROOKSHIRE
PARK FROM TOP OF RIFFLE STATED ABOVE
NOTE EXISTING VEGETATION.
3/1/2007
PICTURE LOOKING TOWARDS BROOKSHIRE PARK,
NOTE SIGNIFICANT AMOUNT OF SEDIMENT THAT
HAS BLUFFED OFF INTO RIVER AND EXPOSED
ROOT MASS JUST ABOVE.
3/1/2007
Z

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PICTURE LOOKING TOWARDS BROOKSHIRE PARK.
NOTE SEVER UNDERCUTTING, EXPOSED ROOTS,
AND EXISTING VEGETATION. ALSO NOTE TREES
ABOUT TO FALL INTO RIVER. SHEET
31112007 C-003

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p,5~ ~' ~ 1 GENERAL NOTES Q
/~ y
+'' 1. SURVEY COMPLETED BY MCGILL ASSOCIATES P.A.1 111 71 2007. U
/ ~ / ` + \ 2. SURVEY DATA SET TO NC STATE PLANE NAD 83' AND NAVD 88'. U ~
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EASnNG1220511.97 / ' III ' ~ >
ELEYAnON:307d16 ~ I w
II 1 ~lTE DESR6TION d x
~I~~l11II~~~
~ ~ II ~ ~.
\ ~ ~ ~~,~ II 1. BROOKSHIRE PARK IS LOCATED IN WATAUGA COUNTY, NC ~,
D ~, APPROXIMATELY 15 MINUTES SOUTH OF BOONE OFF OF HWY. a
~' , ~ ~ / , ~ 421. ~
~~ ~
w ' i~ 2. THE SOUTH FORK OF THE NEW RIVER ACTS AS THE EAST Z
NCRTNING:91C999.G4
EAS1)NG122G59t.9t ' W
E~EVAnaw:3D79.7o ~I'' ~' ~ ~ BORDER OF BROOKSHIRE PARK AND HAS BECOME SEVERELY ~
P NL i P 1 ~ , ~ ` ERODED ON THE RIVERS LEFT BANK TOWARDS THE LOWER END ~ W
'~ I~~ , ~ 1'`0 , 1 OF THE PARK. ~ Q
1 ` \ `~ 1~\ 3. THE STREAM BANK EROSION STRETCHES APPROXIMATELY 500 ~ = Z
~~A/ ,~ 1 C ~ FEET ALONG THE PARK AND IS ENCROACHING ON THE ASPHALT '' I W ry
N~: MING. 91 Q946.E5 W ~ r
EASnNGiz2ao9.21 3a ~ ~ I \ \,t SIDEWALK. THE OWNER HAS CONTRACTED WITH AN ENGINEER
~vAna~:~oso.t~ ~ ~
N~ a ~ ,~ ~'~ ~ \ TO PERFORM A DETAILED STUDY AND DEVELOP POSSIBLE ~!- 0 0
" `~ ~ , ~~~\~~1 \ SOLUTIONS FOR THE PROBLEM AND A PLAN TO ESTABLISH A = Q ~
~ \ RIPARIAN ZONE CONSISTING OF NATIVE VEGETATION. (n Cal
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SCALE; 1";60'
C-100

1

~ OVERBANK RIPARIAN ZONE ~
OVERBANK AREA TO BE STABILIZED
WITH TEMPORARY SEEDING, NATIVE
VEGETATION AND BIODEGRADABLE
EXCELSIOR MATTING TO ENSURE
MINIMAL EROSION DURING
\ GESTATION PERIOD.

/ STABILIZATION OF LEFT BANK \
MOVE LEFT EDGE OF WATER TOWARDS CENTER OF
RIVER BY BUILDING LEFT BANK OUT APPROX. 5 FEET
UTILIZING OPTIONS A OR B TO STABILIZE CHANNEL TOE
AND BANKS. IF OPTION B IS USED, ESTABLISH AN
HISTORICAL BANKFULL ELEVATION AND SET BANKFULL
BENCH TO THAT ELEVATION.
AREAS DISTURBED ARE TO BE PLANTED WITH
TEMPORARY SEEDING, NATIVE VEGETATION, AND
STABILIZED WITH EITHER COIR FIBER MATTING OR A
COMBINATION OF ENKAMAT 7020 ON SLOPES 1:1 OR
GREATER AND 7010 ON ALL OTHER SLOPES, AND
\ FLEXTERRA GROWTH MEDIUM. /
BANK STABILIZATION DESIGN
OPTIONS
EXISTING 8' ASPHALT
SIDEWALK
AVG. DAILY WSEL
LARGE ROCK FOR TOES
ARMOR OPTION A
EXISTING 8' ASPHALT
51DE4VALK
I ,..'.
1' AVG. DAILY WSEL
C' 1' S
ll
BAIA(FU~L ELEV.
ARGEROCKFORTOE~
ARMOR OPTION B
c XI T dG t A~rNtik7
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0 30 60 120
SCALE: 1":60'
Esnn~ATEo
\\ LOCATION: MA%
\ VELOCITY/FLOW
\ VECTOR
0.
~~
GENERAL NOTES wa
~,
F
1. ALL CONSTRUCTION ACTIVITIES TO
Q d
P,DHERE TO THE REQUIREMENTS
WITHIN THE NCDWO 40%aoa PERMITS. ~
2. SURVEY DATA FROM MCGILL V u
~
ASSOCIATES, P.A. DATED 311712007. ~
3. ALL CONSTRUCTION ACTIVITIES TO BE
APPROVED BY THE PROJECT ~
ENGINEER. ~
4. EXTREME CAUTION IS TO BE TAKEN
AROUND TREES AND PLANTS FLAGGED F
FOR NO DISTURBANCE. A DOUBLE ,~, ~,,:,,
ROW OF CONSTRUCTION FENCE SHALL , a
BE PLACED AROUND ALL TREES ~
FLAGGED FOR PRESERVATION. FIRST Z
W
ROW SHALL BE INSTALLED AT FIVE ~ W
FEET FROM TRUNK. SECOND ROW ~ U
SHALL BE INSTALLED AT DRIPLINE. Z
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NOT FOR SHEET
CONSTRUCTION C-101
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MODIFY POINT BAR
DECREASE SEDIMENT
DEPOSITION AND MOVE EDGE OF
` WATER TOWARDS RIGHT BANK.
LOWER OVERALL HEIGHT TO
HISTORICAL BANKFULL
~\~ 1 ELEVATION.
~~ ~~ c ~-'
~~
~l
INSTREAM STRUCTURER\
0~ ~~ ~ POTENTIAL LOCATIONS FOR
INSTREAM-STRUCTURES CONSISTIN
\\' OF ROCK VEINS OR LOG VEINS TO
\ ALLEVIATE EROSIVE FORCES ON
\\`\ _' LEFT BANK.
`, _ ~~
~~~~1~ \ \
\~
I.E:3073.3'
CB.
CATCH BASIN J
TOP EL• 3076.4'
I.E.:307T.3'
~~ ~~~,
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~ ~~
nmR FIBER IM„Dfi HINLL HE PLACED ALWG s~ ~~
TIE CiRSIDE ff ALL IEAIDB7T HFNDSAND ALCNG HODS ffACD(G UPVARD) '^- W
HOIFI SIDES ff 71E CHMBFL IN TANGENT ARES~ ~,%. ri
' FROM 1ff ff CIiAN1E1. H-3 FEET IN
TD S FEET HEYQm LNE CUTTING LENGTH x
BANKFIA.L ~ dE'-11f' DIAIETER)
BD-/~ DEGREES
~~
STAKIrG NAY HE aEDUtlKD TFRaJGH ~ ~ ~
NATTDG, ROCI6 OR CCMACTED SDdS.
REHURE STARTER IBIIE IF' THE CASE. (~ j
' LNE STAKES ~
-III. ~~
~.~Ti-=_=1 11=
~--_- ~
nW~L ttE x~ DEPTH (- U
tRENErr ~~ ~ A OPEN PLANTING PLACE BARE-ROOT CLOSE HOLE WITH
' M1ND4M DEPTH ff H HOLE WITH SEEDLING IN HOLE - SHOVEL OR AUGER -
PRffOSED BNH(FDLL INCHES Arm BACIffILL =1 I SHOVEL OR AUGER ROOT COLLAR AT NO AIR SPACE ~
Nines SURFACE AROUND ROOTS a
L LIVE STAKES SHALL 8E EVQLY SPACED ~ FEET APART
_ ~~BANKFULL Z LIVE STARS SHALL ~ DRIVEN LN'I1L APPRO%DWTFLY ~ ff LNE STAKE IS ' 4
' ~ VITHW GRLUm.
CIDR F~ NAttDIG III- € -III- 3. IF STARTER roLE 1S NEEDED, Am@O2E AIR POCKET AS MUCH As POSSIHLE~
A. IIFARE ON S]TE TRANSPLANT INTERL4S WIDE AVAILABLE BY TF£ OV)FR, diCE ~
I-~ SOURIE ff TRANSPLANT MATERIN. FIRS BETH HARVESTED, UTD.IIE LIVE STAKING _.~~ a
\ ~ L~ 1~ vo® e eBARE-ROOT SEEDLING PLANTING DETAIL NTs
_ `SHOD ~TT~ROff1NG LIVE STAKING-BANK STABILIZATION ~N.rs.> c ~ . a Z
' HAD. AT THE TlP TO
-II 1Y STAPLES Elt STAKES
NOFEA ~ LLI
L USE Vl~- STAKES Oa)T IETAU FDIC ~ U
' MATTING INSTALLED IN PU4 AR0.1mS OR A LNE CUTTINGS - p Z
IN TIE VET. ~ ( HY
B. USE ff NETAL STAPLES ]S ACCEPTABLE HANffULL BMHO LLL \~ ~ ~ Q
VHEN CCHSTRUCTING IN THE DRY AND VIDTH VIDTH ~~ =q PLACE CHICKEN ,,~ ~ ~ ~ ~
VEGETATIIN IS ESTABLISHED PRIIit 7D NRE OVER Tff
DIVERTING VATER. Grp ~ ff LNE ~~ v ~~ a' ~" ;; ~ P
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' H 57 sTOrE Alm/Qt I AND SOIL IN 1 rA1MN. DEPTH ~ Y"-+-t~;- , ~:. 1 I Z
STOlE FRD7 STREAM HED HETVEEN I i~ 5 . LL..LL ~
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FILTER FABRIC LNE CUTTINGS ~
SCCTIR ~ Q
Pm drNE POST INTO ~ "~ m" q';'~ ~ ~~ ~'~a ~r ~. ~/~ Q
GROUND APPRmI. 25 DRNE POST IN A V
FEET TRJANGULAR PATTERN N
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THAN BANKFIAL FROM FLAT Erin ff POST IL 11~.
3'KD' HNmVOOD M Q
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i ~_~ W W
(SPECIFIED 8Y
ENGINEER)
eSINGLE ROCK VANE-PLAN VIEW IN.rs.~ 6 BRUSH MATRESS ~N.TS.~ ~
END ff LOGS TO BE BURffD A o o Q a d
MDDMIM ff is FT HELOV STREAK r ~ 3 3 -~
~~ ~ HED SUtFACE n Q ~ • • .. ~ 3 3
BuR1En HaDV sTaEAN ° ~ z } ~ z w w
SURFACE HED ID! 2iX It N „ 0] m w 0_ ff
SPECD7ED BYBY ENGI(NEER) ~ ` ~ J (9 D p U' 1-
LARGE BmILDERS TO 8E PLACED ON O ~ Q ~ O Q ~ ~
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BELOV STREAM BED SLWFACE [L O (n ~ U J ~ U
' v~ITX t57STDrE A m/0 ~ ~ ~ J C
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t BARK DN BOTH TREES 70 ~ ff FtnTER tlri V[TH ~ OF W ~ r
BE REMOVED ON UPSTREAM ~ B-1 VERTICAL SLOPE I(SLOPEA ~ _
SIDE AND VOVEN
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TACKED a IPSTREAM 1
SIDE VITH ROffING NAILS ( ~ iL m
' ~ Q LL~J /Q^
ROOT WSS TO HE LEFT Q ~Q v/
@I NEARER LDC AND LARGE &BADERS 7- NOTES: Lu ~
TIED D! STREAM BANK REPLACED ~ DDVNSraEAM C 0 N C E P T 0 N LY
ANn HAac-FILLED smE ff rEa~R LoG ANn 1. TREE & SHRUB SPECIES TO BE RANDOMLY INTERMIXED ON 6'X6 SPCING UTILIZING AT (n ~
BACK-FO1ED LEA5T 5 OF THE 9 TREE SPECIES LISTED AND 3 OF THE 7 SHRUB SPECIES LISTED. ~
MATERIAL SOURCE AND DESIRED SUBSl1TUTIONS TO BE APPROVED BY PROJECT ENGINEER. NOT FOR
~ 2. TOTAL NUMBER OF TREES IS TO BE DETERMINED. SHEET
• 3. TOTAL NUMBER OF SHRUBS IS TO BE DETERMINED. CONSTRUCTION ~-900
SINGLE LOG VANE-PLAN VIEW IN.T.s.~ 4. TREE AND SHRUB PLANTING TO BE ON MID-BANK AND UPPER BANK ZONE.
F REV: A 25MAY07
TREES
SPECIES COMMON NAME TOTAL # SIZE
QUERCUS ALGA WHITE OAK TBD BARE ROOT
PLATANUS
OCCIDENTALIS AM. SYCAMORE TBD BARE ROOT
QUERCUS
COCCINEA SCARLET OAK TBD BARE ROOT
BETULA LENTA SWEET BIRCH TBD BARE ROOT
LIRIODENDRON
TUUPIFERA OW POPLAR TBD BARE ROOT
TSUGA
CANADENSIS E. HEMLOCK TBD BARE ROOT
BETULA
ALLEGHANIENSIS YELLOW BIRCH TBD BARE ROOT
ACER RUBRUM RED MAPLE TBD BARE ROOT
BETULA NIGRA RIVER BIRCH TBD BARE ROOT
SHRUBS
SPECIES COMMON NAME TOTAL # SIZE
CARPINUS
CAROUNIANA AMERICAN
HORNBEAM TBD BARE ROOT/POTTED
HAMAMELIS
VIRGINIANA AMERICAN
WITOHHAZEL TBD BARE ROOT/POTTED
ALNUS
SERRULATA BROOKSIDE
ALDER TBD BARE ROOT/POTTED
LEUCOTHOE
FONTANESIANA HIGHLAND
DOGHOBBLE T8D BARE ROOT/POTTED
SALIX NIGRA BLACK WILLOW TBD BARE ROOT/POTTED
CORNUS AMOMUM SILKY DOGWOOD TBD BARE ROOT/POTTED
SALIX SERICEA SILKY MALLOW TBD BARE ROOT/POTTED

Brookshire Park -Repair Plan June 2007
' Watauga County McGill Associates, P.A.
APPENDIX C
1
SECTION 404 /SECTION 401

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PERMIT APPLICATION
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Office Use Only: Form Version March OS
USAGE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
1. Check all of the approval(s) requested for this project:
Section 404 Permit ^ Riparian or Watershed Buffer Rules
^ Section 10 Permit ^ Isolated Wetland Permit from DWQ
401 Water Quality Certification ^ Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested:
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ^
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ^
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ^
' II. Applicant Information
1. Owner/Applicant Information
Name: WatauPa County, NC
Mailing Address: 331 Queen Street, Suite A
Boone, North Carolina 28607
' Telephone Number: Fax Number:
E-mail Address:
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: J.P. Johns, PE
Company Affiliation: McGill Associates, P.A.
Mailing Address: 420 E Park Ave., Suite 305
' Greenville, SC 29601
' Telephone Number: 864-234-6944 Fax Number: 864-235-6766
E-mail Address: jpiohns~,mc ig~llengineers.com
III. Project Information
' Page 5 of 13

Attach a vicinity map clearly showing the location of the property with respect to local
I 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 ro'ect: Brookshire Park Stream Enhancement and Stabiliz i n
p ~ at o
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 2921-00-6676-000
4. Location
' County: Watauga County Nearest Town: Boone, NC
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers/names, landmarks, etc.): From Boone, NC take
' Hwy 421 (Kind Street), left on Brookshire Road, site is on right on river adjacent to park.
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 36.2272 °N -81.6428 °W
' 6. Property size (acres): 7.64
7. Name of nearest receiving body of water: South Fork of the New River
t 8. River Basin: New River
(Note -this must be one of North Carolina's seventeen designated major river basins. The
' River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
' at the time of this application: Brookshire Park is a recreational area developed by
Watauga County. The southern border of the property is bounded by the South Fork of the
New River. The river bank on the park side is severely eroded with 10-15 ft vertical banks
along approximately 500 feet of Brookshire Park's river edge.

Page 6 of 13

1
' 10. Describe the overall project in detail, including the type of equipment to be used: The
project will consist of providing a stabilization plan for the South Fork of the New River
I along its border with Brookshire Park. The stabilization plan will consist of moving the left
edge of water towards the center of the river by building the left bank out approximately 5
feet, while armoring_the toe with large boulders and, where needed providing, a bankfull
bench approximately 5 feet in width to help alleviate in future bank erosion. A point bar on
the right side of the river adjacent to Brookshire Park will also be modified. The point bar
will also be moved towards to the right bank approximately 5 feet and be cut down to an
f elevation which will allow the river to use it at high water situations. Approximately 2 or 3
in-stream structures will also be built to help turn the water away from the severely eroded
banks. The in-stream structures will either consist of rock veins or log veins depending on
the availability of materials. All over bank areas will be stabilized with temporary seeding,
native vegetation and biodegradable excelsior matting to ensure minimal erosion during
gestation period. The left river bank will be stabilized with temporary seeding, native
t vegetation, and either coir fiber matting or a combination of Enkamat and Flexterra Growth
Medium.
' 11. Explain the purpose of the proposed work: Watauga County received a grant from the
Clean Water Management Trust Fund to do the nronosed work in order to stabilize and
prevent further degradation to the river banks in this section of the South Fork of the New
River.
' IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
' project (including all prior phases of the same subdivision) in the past, please explain. Include
the USAGE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
' construction schedules. N/A
1 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.
N/A
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VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
' riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written descri tion of the ro osed im acts: 500 feet of the South Fork of the New
p p p p
' River are to be stabilized using Bioen ing Bering and Natural Channel Design Techniques.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.

Wetland Impact
Site Number

(indicate on map)
Type of Impact Type of Wetland
(e.g., forested, marsh,

herbaceous, bog, etc.) Located within

100-year
Floodplain
( es/no) Distance to

Nearest
Stream
(linear feet) Area of

Impact
(acres)

Total Wetland Impact (acres)
3. List the total acreage (estimated) of all existing wetlands on the property: 0.0
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide by 43,560.

' Page 8 of 13

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Stream Impact
Number
(indicate on ma)
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
(linear feet) Area of
Impact
(acres)

1 South Fork New
River Stream Bank
Stabilization
Perennial Approx.
500

Total Stream Impact (by length and acreage) 500
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill. excavation. dred~in~. flooding. drainace. bulkheads. etc.
Open Water Impact

Site Number
(indicate on ma)
Name of Waterbody
(if applicable)

Type of Impact Type of Waterbody

(lake, pond, estuary, sound, bay,
ocean, etc.) Area of

Impact
(acres)

Total Open Water Impact (acres)
' 6. List t

he cumulative im act to all Waters of the U.S. resulting from the project.
Stream Impact (acres):
Wetland Impact (acres):
Open Water Impact (acres):
Total Impact to Waters of the U.S. (acres)
Total Stream Impact (linear feet): 500
7. Isolated Waters
Do any isolated waters exist on the property? ^ Yes ~ No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
8. 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

Page 9 of 13

VII.

Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
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. The stream bank on the east
side of the park needs to be repaired and restored to avoid continued sedimentation and erosion
of the banks and property. Restoring the channel to pre-storm conditions and stabilizing the
stream banks will provide the appropriate protection against future high water storm events.
When at all possible, equipment will be kept out of the stream channel and stream crossings will
be minimized. Temporary stabilization measures will be employed on all bare soils within 15
days of ground disturbing activities.
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.

1

USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o. enr.state.nc.us/ncwetlands/strmgide.html.
Page 10 of 13

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.
N/A
2. Miti ation ma also be made b a ment into the North Carolina Ecos stem Enhancement
g Y YpY Y
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
' additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
' Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount ofNon-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
' 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ~ No ^
t 2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ^ No
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
' It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ

' Page 11 of 13

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Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ^ No
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
* Impact Required
Zone ,___.___ r__~~ Multiplier ,~,~;+;~„*;,,,,
1 I I 3 (2 for Catawba)
2 1.5
Total
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additiona120 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260.
' XI. Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. The park has parking and a walking trail and the
proposed project adds no impervious area to the site.
Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
N/A
XII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ^ No
Page 12 of 13

Is this an after-the-fact ermit application? Yes ^ No
p
i XIII. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ^ No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
httn://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: There
is no further proposed development for this portion of the site.
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).

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(Agent's signature is valid only if an authorization letter from the applicant is provided.)