20080417 Ver 1_Application_20080616

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DUKE ENERGY LAKE SERVICES
rC12-Q
P O BOX 1006
CHARLOTTE, NC 23201-1006
704-382.1567 or TOLL FREE 1-800-443-5113
APPLICATION FOR PERMIT TO STABILIZE THE SHORELINE IN NOR'T'H CAROLINA
Please type or print and fill in ali blanks. If information is not applicable, so indicate by placing N/A in blank. PLEASE
SUBMrF APPLICATION AND APPROPRIATE DUKE ENERGY FILING FEE, PAYABLE TO DUKE ENERGY,
TO ABOVE ADURESS.
1. Applicant information A. Name Of -080982
B. Mailing Address .lz9- I?,2iSc?ra C24vai(S ,a - -
C. Telephone:-. --70+. 87(o_.'39+7
_ -
H. Location of Proposed Project
A. Lake _1_;1AV 1-t7 se>NJ
B. Street Address - 7 7 d-_ZIN,"' u?? 'w a? Ry
C_ County fZ.CT)t (._L -7
D. City, town. community or landmark vl rZ_?o
E. Section - Lot t# _ Subdivision
F. Directions to property by road 1 - 7 7 I?o2?7i ua?.v -? AVs `?
G. Latitude and longitude for the project site ,3 57 si "48 "WC17 ^ -
H, Please submit a neap showing the coordinates or a detailed map (USC3S quasi map, city snap, etc_) showing the
exact location of the project site. (NOTE: Latitudel longitude coordinates can be found on internet site,
!www.M:Lmonus.com, Directions: Don't register, click "Maps", enter address, draw map, select "Map Clicking
Will...", select "Lat/Long", click map)
Ill. Description of Project ,
A_ Length of wall A pprax 300
B. Material La ?ZS, t` 570 - 'R, i ro iz # to -
C_ Distance from property line/shoreline _? -
IV. Intended Use of Project Area
A. Pnva 1?' BLiC RIC,N7 OF \,./%7
B. mmercial
V. Applicant Signature t 7-W_ 7/ icoR alt L>o -r Date
PLEASE NOTE THE FouowING, T 7-
+ 2 COPIES Oi, THE "DIRGE ENERGY APPLICATION FOR PERMIT TO STABILIZE THE SHORELINE IN NORTH
CAROLINA", PHOTOGRAPHS OF THE SHORELINE TO BE STABILIZED, AND FIVE (5) COPIES OF T14L
COMPLETED "NC DIVISION OF WATER QUALITY PRE-CON..MUCTION NOTIFICATION APPLICATION-
MUST 13E SUBMITTED WITH !'HE DIVISION OF WATER QUALITY APPLICATION NEE TO:
NC DIVISION OF HIAT'ER QUALITY
ATTENTION: CYNDI KAROLY
PARKVIE]+ BLDG., 2321 CRARTREE BLVD
R4LEIG11. IVC 276,14
9I4-733-1786 '1111 y
6 2048
Y:11.AKEMGMTV,ackage lnformationtNC Shorctine Stabilization Appiication.tloc WFT(,gN?jS f'' r 4tAV&' a(IAL1IY
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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY DIVISION OF HIGHWAYS LYNDO TIPPETT
GOVERNOR SECRETARY
March 3, 2008
Mr. Brian Wrenn
401 /Transportation Permitting Unit
1650 Mail Service Center
Raleigh, N.C. 27699-1650
080982
SUBJECT: I-77 Embankment/Shoreline Stabilization on Lake Norman, Iredell County
Dear Mr. Wrenn:
The North Carolina Department of Transportation proposes to stabilize the Interstate 77 road
embankment slope/shoreline along Lake Norman in Iredell County. Approximately 250 feet of
roadway embankment slope/shoreline will be stabilized utilizing a soil anchoring system. The
soil anchoring system consists of the installation of an 11 Gage 2" galvanized chain link mesh
over the road embankment slope and secured into place using anchors that will extend to a depth
of 10-20 feet. Type I fabric and riprap will be utilized at the toe of the slope along the edge of
Lake Norman.
During project planning meetings on December 3, 2007 and February 6, 2008 with the regional
Division of Water Quality representative, Ms. Polly Lespinasse, NCDOT has agreed to manually
clear the embankment, leaving the trees to a height of - 2 inches, which should allow regrowth of
vegetation. Additionally, jute matting and native seed mix will be utilized over the soil anchoring
chain link mesh. Turbidity curtains will be utilized along the shoreline to contain any sediment
disturbed during the installation of the riprap at the toe of the slope.
I have enclosed a pre-construction notification for a Water Quality Certification #3693, sketches
of planned activities, slope stabilization special provision and location maps relative to the
project.
Project information for the 401 Automated Payment Procedure is as follows:
0 Work order number: 150461-55120005-12.104931-4671
• TIP #: NA
• Project Category: $240.00 Fee
V*
I-77 Embankment/Lake Norman Shoreline Stabilization
Page 2
March 3, 2008
If you have any questions or concerns, please feel free to contact me at [phone]. Thank
you for your time and consideration to this matter
Respectfully yours,
M.L. Holder, P.E.
Division Engineer
Twelfth Division
BY:
Trish Simon
Division 12 Environmental Supervisor
Enclosures
Cc: Polly Lespinasse, DWQ, Mooresville Regional Office

Af
Office Use Only' Form Version March 05
USACE Action ID No. DWQ No. 2 0 0 8 0 9 8 2
_1.1_11 ___-JA11 \
(If any particular item is not appucanie to tors project, please ewer INUL r,Npu-,avlc Lll? •.J
1. Processing
1. Check all of the approval(s) requested for this project:
? Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Regional General Permit
198200030 (WQC#3693)
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: Mike Holder N.C. Department of Transportation
Mailing Address: P.O. Box 47
Shelby North Carolina 28151
Telephone Number: 704-480-9020 Fax Number: 704-480-5401
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: Trish Simon
Company Affiliation: N.C. Department of Transportation
Mailing Address: P.O. Box 47
Shelby North Carolina 28151
Telephone Number: 704-480-9044 Fax Number: 704-480-5401
E-mail Address: tsimon dot state nc us
Page 1 of 8
V4
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Interstate 77 Road Embankment Stabilization
2. T.I.P. Project Number or State Project Number (NCDOT Only): 12.104931
3. Property Identification Number (Tax PIN): NA
4. Location
County: Iredell Nearest Town: Statesville
Subdivision name (include phase/lot number): NA
Directions to site (include road numbers/names, landmarks, etc.): From Statesville. I-77 to
area immediately north of causeway at Iredell/Mecklenburg County line.
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): 35°31'09"°N 80°51'48"°W
6. Property size (acres): -.23 acres
7. Name of nearest receiving body of water: Catawba River (Lake Norman below elevation
760)WS IV & B CA (from Lyle Creek to Cowans Ford Dam).
8. River Basin: Catawba
(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: Existing Conditions-Interstate highway embankment
General Land Use- Highway and Residential
Page 2 of 8

le
10. Describe the overall project in detail, including the type of equipment to be used. The North
Carolina Department of Transportation proposes to stabilize the Interstate 77 road
embankment slope and shoreline along Lake Norman in Iredell County. Approximately 250
feet of roadway embankment slope and shoreline will be stabilized utilizing a soil anchoring
system The soil anchoring system consists of the installation of an 11 Gage 2" galvanized
chain link mesh over the road embankment slope and secured into place using anchors that
will extend to a depth of 10-20 feet Type I fabric and riprap will be utilized at the toe of the
slope along the edge of Lake Norman. During planning meetings on December 3
2007 and February 6 2008 with the regional Division of Water Quality representative, Ms.
Polly Lespinasse NCDOT has agreed to manually clear the embankment, leaving the trees to
a height of - 2 inches which should allow regrowth of vegetation. Additionally, jute matting
and native seed mix will be utilized over the soil anchoring chain link mesh. Turbidity
curtains will be utilized aloe the shoreline to contain any sediment disturbed during the
installation of the riprap at the toe of the slope. Typical heavy equipment (cranes, trackhoe,
backhoe etc) will be used for the construction of this project.
11. Explain the purpose of the proposed work: The purpose of the proposed work is to repair an
eroding and sloughing interstate road embankment for the safety of the travelling public.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.NA
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.
No future permit requests are anticipated at this site.
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.
Page 3 of 8
16
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: Permanent impacts from riprap
stabilization.
2. Individually list wetland impacts. Types of impacts
mechanized clearing, grading, fill, excavation, flooding,
separately list impacts due to both structure and flooding. include, but are not
ditching/drainage, etc. limited to
For dams,
hi
i Distance to Area of
Wetland Impact
Site Number
(indicate on map)
Type of Impact T e of Wetland
yp
(e.g., forested, marsh,
herbaceous, bog, etc.) L n
t
ocated w
100-year r
100-year lain
Floodp
es/no Nearest
Stream

linear feet) Impact
(acres)

Total Wetland Impact (acres) 0
3. List the total acreage (estimated) of all existing wetlands on the property: 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 acrea e, multi 1 len h X width, then divide b 43,560.
Average Area of
Stream Impact
Number Stream Type of Impact Perennial or Stream Width Impact Length Impact
?
Name Intermittent. Before (linear feet) (acres)
(indicate on map) Impact
Total Stream Impact (by length and acreage)
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Open Water Impact
Site Number
(indicate on mat))
1
Name of Waterbody
(if applicable)
Catawba River (Lake
Norman)
Type of Impact
Riprap Stabilization
along shoreline (below
average high water)
Temporary Turbidity
Curtains
Total Open Water Impact (acres)
Page 4 of 8
Type of Waterbody Area of
(lake, pond, estuary, sound, bay, Impact
n1 pnn Ptc (acres)
Lake 1 .029
.029
0

6. List the cumulative impact to all Waters of the U.S. resulting from the project
Stream Impact (acres): Permanent 0
Wetland Impact (acres): 0
Open Water Impact (acres): 0.029
Total Impact to Waters of the U.S. (acres) 0
Total Stream Impact (linear feet): 0
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 NO POND CREATION IMPACTS
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. The I-77 shoulder/emergency
lane in the nronosed nroiect area is sloughing away from the travel lanes of I-77 due to the
erosion of the Lake Norman shoreline along this section of roadway embankment. The eroding
area along the waters edge and the road embankment needs to be stabilized to prevent the
continued sloughing of the I-77 roadway. Per 15 NCAC 02B.0243 (Catawba River Basin
Riparian Buffer Rules) shoreline stabilization is designated as an allowable activity,
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.
Page 5 of 8
R
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.
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.
NO MITIGATION ANTICIPATED.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-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 ?
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)?
Page 6 of 8
0
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
X.
XI.
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 ?
Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ® No ?
2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multi liers
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 7500 3 (2 for Catawba) O
2 NA 1.5 NA
Total 7500 0
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what
Donation of Property, Riparian Buffer Restoration /
Riparian Buffer Restoration Fund). Please attach all
within 15A NCAC 2B .0242 or .0244, or .0260
REQUIRED.
Stormwater (required by DWQ)
type of mitigation is proposed (i.e.,
Enhancement, or Payment into the
appropriate information as identified
. NO BUFFER MITIGATION IS
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.
No increase in impervious surface is proposed
Page 7 of 8

XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
No wastewater is generated from the project.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application? Yes ? No
XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
The interstate stabilization will not result in additional development of the surrounding area.
XV. 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).
/V/,?_ l4 -1?1 ?? 3-0?
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 8 of 8
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Date: 2/7/2008 Caption: 1-77 Embankment Stabilization
Scale: 1 inch equals 1333 feet
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Interstate 77, I redel I County
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.? I-77 Lake Norman Iredell County
SLOPE STABILIZATION:
General:
(SPECIAL)
This special provision governs the selection of anchors and construction of slope stabilization
systems in accordance with the approved plans at locations determined by the Engineer. Work
includes anchor selection, installing facing, installing anchors and connections, and loading and
load locking anchors.
Select a driven anchor system consisting of either the Platipus or Manta Ray soil anchoring
systems.
For further information concerning the Platipus soil anchoring system, contact:
Platipus Anchors Limited
2008 Gamer Station Boulevard
Raleigh, NC 27603
Telephone: [phone]
http://www.platipus-anchors.com
For further information concerning the Manta Ray soil anchoring system, contact:
Williams Form Engineering Corp.
4170 Vansant Road
Douglasville, GA 30135
Phone [phone]
Fax [phone]
www.williamsform.com
Quality Assurance:
Conduct a preconstruction meeting with the Contractor, the Contractor's superintendent, the
Resident Engineer and/or his or her representative and the Geotechnical Operations Engineer to
discuss construction and inspection of the slope stabilization system. This meeting should occur
after the Contractor has mobilized to the site and all submittals have been approved.
Anchor Selection Submittal:
The Contractor is responsible for selecting the proper anchor size, tendon type and length, and
anchorage to meet the design load and finished installation depth shown on the plans. The
Contractor should review available subsurface information in selecting the anchor size, type, and
drive depth. Contact the anchor Manufacturers for specific recommendations on selecting
anchors. The anchor must have a factor of safety of 2.0 against structural failure of the anchor
head, tendon, and anchorage for the design load as shown on the plans. All components must
have a 50 year service life.
Anchors may not extend beyond the Right of Way or Easement line.
Submit three (3) copies of the Anchor Selection to the Engineer for review. The Engineer will
respond with comments within 10 business days. Do not begin construction until all submittal
requirements are satisfied and acceptable to the Engineer. No adjustments in contract time will
be allowed due to incomplete submittals.
I-77 Lake Norman Iredell County
Include in the Anchor Selection Submittal:
1) Anchor size, tendon/bar size, tendon/bar material, anchor head type.
2) Description of the load testing and load locking method, including details of the jacking frame
and associated cribbing, identification number and certified calibration records for each load cell
or test jack pressure gauge. Calibration records shall include the date tested, device
identification number and calibration test results. Load cells and pressure gauges shall be
certified for an accuracy of at least two (2) percent of the applied certification loads by a
qualified independent testing laboratory within twelve (12) months of the submittal date.
3) Manufacturer and/or vendor certifications stating all materials meet the requirements of this
provision.
• For anchors and anchor hardware, provide manufacturers' product certificates
certifying that materials comply with specified performance characteristics and
physical properties.
• For chain link fabric, provide manufacturers' product certificates showing the
physical properties of the fabric used and conformance of the fabric with this
provision.
• For bearing plates and connection hardware, provide manufacturers' product
certificates certifying that materials comply with specified performance
characteristics and physical properties.
Materials:
Provide materials conforming to the applicable sections of the Standard Specifications and the
following:
Platipus System
Soil anchors, bearing plates and connections shall be in accordance with the
manufacturers' specifications or as directed by the Engineer.
Manta Ray System
Soil anchors, bearing plates and connections shall be in accordance with the
manufacturers' specifications or as directed by the Engineer.
Chain Link Fabric
Furnish and install chain link fabric as detailed in the plans and as directed by the
Engineer. The chain link fabric shall be Type I Class D fabric with a maximum 2 x 2 in
(50 x 50 mm) mesh opening and a minimum diameter of 0.12 in (3 mm), or an approved
equal. Wire constituting the fabric shall have a minimum breaking strength of 870 lbs
(3.9 kN) when tested in accordance with AASHTO T68. The chain link fabric shall have
a minimum height (width) of 5 ft (1.5 m). All chain link fabric shall meet the
requirements of Section 1660 of the Standard Specifications and this Provision.

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I-77 Lake Norman Iredell County
Bearing Plates and Connection Hardware
Bearing plates shall be 6 in x 6 in x 0.125 in (175 mm x 175 mm x 3 mm) dished
galvanized or stainless steel revetment plates. Use couplers, accessories and other
devices as recommended by the anchor supplier. Steel bearing plates and connection
hardware shall meet the requirements of ASTM A36 and be stainless steel or hot-dipped
galvanized to meet ASTM A153.
Handling and Storage:
Carefully store all steel components (anchors, bearing plates, connection hardware, etc.) on
supports to prevent contact with the ground. Damage to steel as a result of abrasion, cuts or
nicks and welds and weld spatter will be cause for rejection. Protect steel from dirt, rust and
other deleterious substances at all times. Corrosion or pitting of steel will be cause for rejection.
Verification Testing:
Two (2) verification tests are required to verify the Contractors' methods and the anchor design
capacity. The Engineer will determine the locations of these tests.
Supply all material, equipment and labor to perform the verification tests. Ensure that
verification test anchors extend to the minimum finished depth shown on the plans beyond the
slope face. Collect all required test data in the presence of the Engineer.
Provide a jack and a pressure gauge calibrated as a unit. Use a pressure gauge graduated in 100
psi (700 kPa) increments or less with a range not exceeding twice the anticipated maximum
pressure during testing, unless otherwise approved by the Engineer. The ram travel of the jack
shall be greater than 4 in (100 mm). The jack shall be capable of applying each load in less than
one (1) minute.
Center the jack over the anchor. Independently support the jack so the jack does not bear on the
anchor. Position the jack such that unloading and repositioning of the jack during the test will
not be required.
Perform verification tests by slowly loading the anchor to 200 percent of the design load. A
verification test anchor is acceptable when a pullout or structural failure does not occur at the
maximum test load. Pullout failure load is defined as the load at which attempts to increase the
test load result in continued excessive pullout movement of the test anchor. Record the pullout
failure load as part of the test data.
Verification tests that are not acceptable may require re-design and a revised Design Submittal or
additional verification tests as determined by the Engineer. Complete all verification tests to the
satisfaction of the Engineer before beginning construction of the slope stabilization system.
Construction:
Ensure the surface of the slope is free of obstructions that would prevent the chain link fabric
from lying in direct contact with the surface of the slope. Install anchors at the locations and to
the lengths and declinations as shown in the plans or as directed by the Engineer. Anchors may
be added, eliminated or relocated as determined by the Engineer to accommodate actual site
conditions. Install anchors as shown on the plans in accordance with the manufacturers'
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I-77 Lake Norman Iredell County
recommended tolerances or as directed by the Engineer. Replace any anchor that exceeds such
tolerances.
Create a 1-foot diameter, 6-inch deep excavated depression in the slope face around each anchor
tendon or bar immediately prior to installing the chain link panel to be secured by the anchors.
Beginning at the left or right limits of the stabilization at the crest of slope, install the chain link
fabric in predominantly vertical panels. Work shall proceed across the slope one chain link
fabric panel at a time. Connect the bearing plate to the leftmost/rightmost top row anchor. Place
a square of Type I engineering fabric in accordance with Section 1056 of the Standard
Specifications, of similar size as the bearing plate, between the bearing plate and the chain link
fabric. With the equipment and methods utilized for the verification tests, load the anchors so
that the head assemblies are compressed into the slope surface a minimum of 1 in (25 mm) and
such that the required anchor test load as shown on the plans is achieved. After load testing,
back the anchor load off to the design anchor load as shown on the plans and lock off the anchor
head assembly. An anchor is acceptable when a structural or pullout failure, as defined in the
Verification Testing section, does not occur at the required test load. For bar anchors, cut the bar
2 in (50 mm) above the locking nut at the plate. For tendon anchors, cut the cable 12 in (300
mm) above the wedge lock.
Work across the panel away from the first anchor, slightly tensioning the chain link fabric prior
to connecting the bearing plate to and loading the next anchor. Continue connecting bearing
plates and loading the anchors in rows while tensioning the chain link fabric, working from top
to bottom until the all anchors are completed in each chain link fabric panel. If an anchor occurs
near the edge of a chain link fabric panel, do not install the bearing plate until the adjacent
overlapping panel is installed.
Install subsequent chain link fabric panels in a similar manner left/right of previous panels to the
limits shown on the plans. The panels should be overlapped by two mesh diamonds and
connected to the adjacent panel by "Tiger Tite" locking clips on 2 ft (600 mm) centers. All
"Tiger Tite" locking clips must be composed of galvanized steel, approximately 0.120 in (3 mm)
diameter (gage 11). Alternative fasteners may be approved by the Engineer provided they
provide at least 900 lbs (4 kN) of resistance while still remaining locked and closed. Galvanize
all "Tiger Tite" locking clips to the requirements of ASTM A153.
Measurement and Payment:
The quantity of slope stabilization to be paid for will be the actual surface area of square yards
(square meters) of the slope stabilization system. Overlaps in the chain link fabric are not
included in the measured area. Additional anchors needed due to failing anchor tests will be
considered incidental to the cost of the Slope Stabilization.
Slope stabilization will be paid for at the unit bid price for "Slope Stabilization" per square yard
(square meter) of Slope Stabilization. The unit bid price will constitute full compensation for all
the materials, labor, tools, equipment, testing and incidentals required to construct the slope
stabilization system.
Slope Stabilization ............................................................. square yard (square meter)
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