20071858 Ver 1_401 Application_20071107

PROFESSIONALS, INC. P ~ I
153 Brouini Court, Suite C Greenville, South Carolina 29615 __
Phone: [phone] Fax: [phone]
0-1858
October 22, 2007
Asheville Regulatory Field Office NC Division of Water Quality NCWRC
US Army Corps of Engineers 401 Wetlands Unit Mountain Regional Coordinator
151 Patton Ave. Room 208 1650 Mail Service Center 20830 Great Smokey Mountain
Asheville, NC 28801-5006 Raleigh, NC 28402-1890 Expressway
Waynesville, NC 28786
Reference: Pre-Construction Notification, Clean Water Act (CWA) 401 and 4(1~ *~~ , ~;.~, ~~ - •.~ .Y~T[~ 9
Hutchison Bank Stabilization ~L ~ ~~ ~,,1-~'~ ~.l ~-= % ~~
113 Rock Point Road ~_,
Rutherford County, Lake Lure, NC i~t (~;::~` ~ 20~j
EAS Project No. EAS 07-320
i1'tli~ - ~tN1~7FR (~U~L1TY
To Whom It May Concern: V4~1ili~j~? e,~~p ~T(!'?~+t`JA•;~a 3RAt~CH
Attached are a completed Pre-Construction Notification (PCN) form and supporting documentation to
apply for the applicable Nationwide Permit under the Section 404 of the CWA and Water Quality
Certification under Section 401 of the CWA for the subject bank stabilization project. Also included with
the NCDEQ submittal is the required fee.
As presented in the application package, the proposed approach to stabilizing the section of embankment
at Lake Lure will involve the construction of a series of three, terraced, Mechanically Stabilized Earth
(MSE) walls. Included in this package are a drawing of the walls and MSE wall design data sheets.
Please contact either of the undersigned as soon as possible if you have any questions or need any
clarifications or additional information. We would like to accomplish the work during the winter lake
drawdown. The additional buffer space between the construction area and lake shore provided during this
period will aid in minimizing any potential impacts to the lake during construction. We look forward to
working with the Corps of Engineers, the NC Department of Water Quality, and the NC Wildlife
Resources Commission.
Sincerely,
Inc.
J. Ashley~BrcSwn, P.E.
Project Engineer
fi t"~ i~~~

~ ~
.-}. %~
" '
. r ~,
Douglas R. Dunko, P.~J ~`;^' .°s'
Senior Geotechnical En~r}ieer ,~, _ `.
NC License No. 031220 "~f
Attachments: Pages 5 - 12 USACE/DWQ Pre-Construction Notification
Figure 1 Project Vicinity Map
Figure 2 Project Site Plan "Hutchison Bank Stabilization"
Wall A, B and C Keystone Retaining Wall Design Sheets
GEOTECHNICAL AND CIVIL ENGINEERING • CONSTRUCTION MATERIALS TESTING
ENVIRONMENTAL • LABORATORY TESTING • LAND SURVEYING • SPECIALTY INSPECTIONS

Office Use Only' Form Version March OS
USACE Action ID No. DWQ No. ~ T- ~ 8 5 8
(If any particular item is not applicable to this project, please enter "loot Appticaoie° or "NiA~~.)
I. Processing
-~,, ~" ~- I ..
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:
13
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 p~~' ~:=~ ~~= ~~
x~
1. Owner/Applicant Information , ~ \ ~ ZOt~
Name: Mr. Bill Hutchison
Mailing Address: 1648 Cunliff Lane ~~~ 1~rh? a.~an r.Tl~~dPA?v9.ilR ~~`~~~
Sarasota, FL 34239-4417
Telephone Number: 941-504-1471 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. AshleyBrown P.E.
Company Affiliation: EAS Professionals Inc.
Mailing Address: 153 C Brozzini Court
Greenville, SC 29615
Telephone Number: 864-234-7368 Fax Number: 864-234-7369
E-mail Address: abrown(a~eas-pro com
Page 5 of 12

III. Project Information
7
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: Hutchison Bank Stabilization
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): 230694
4. Location
County: Rutherford Nearest Town: Lake Lure
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.): From Asheville: I-240 to
US-74E to US-74-AE, merge US-74-ALT, continue on US74/64 past Bat Cave, Chimney
Rock, to Lake Lure, at municipal golf course go left on Charlotte Drive, right on Picnic Point
Road, riPht on Rock Point Road, Parcel on left, 113 Rock Point Road
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): 35.4256 °N -82.1900 °W
6. Property size (acres): 0.35
Name of nearest receiving body of water: Lake Lure
8. River Basin: Broad
(Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http:l/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: Area around Lake Lure has been developed with permanent
single family residential and vacation homes for over 50 years. Residence and boat house are
located on subject propert~_
Page6of12

10. Describe the overall project in detail, including the type of equipment to be used: Bank
stabilization of approximately 80 linear feet of Lake Lure shoreline. Rip rap to be placed
along shoreline at less than one cubic yard below the high water mark per linear foot of
shoreline. Bank above shoreline to be stabilized by benching the very steep embankment.
Soils will be excavated using small earth moving equipment and hand labor, and a series of
stepped MSE walls rangin ig n height from 5 to 8 feet will be constructed along and up the
embankment to where the natural grade flattens somewhat from the approximately 1:1 slope
in the area to be stabilized to approximately 1:1.5 to 1:2.0
11. Explain the purpose of the proposed work: To stabilize the lake bank in the area shown to
reduce erosion.
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. N/A
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
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 description of the proposed impacts: Placement of rip rap along
approximately 801inear feet of shoreline at less than one cubic yard per running foot along
the bank below the plane of the ordinar~hi~h water mark.
Page 7 of 12

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: 0.01
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
must be included. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact
Number
(indicate on ma)
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
(linear feet) Area of
Impact
(acres)

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 ma)
Name of Waterbody
(if applicable)

Type of Impact Type of Waterbody

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

Impact
(acres)
1 Lake Lure Rip Rap Placement Lake 0.007

Total Open Water Impact (acres) 0.007
Page 8 of 12

6. List th
e cumulative impact to all Waters of the U.S. resulting from the roject:
Stream Impact (acres):
Wetland Impact (acres):
Open Water Impact (acres): 0.007
Total Impact to Waters of the U.S. (acres)
Total Stream Impact (linear feet):
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.
N/A
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
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. Lake Lure is an artificial
lake constructed in 1926. Natural grades along_portions of the shoreline exceed stable slopes for
the soil types present under oing_persistent lake wave action. The area in question is ve eta
and a small block breakwater was constructed at the toe of the slope mangy e~ ars ago Still the
embankment continues to under o scarping as the soils seek to attain stability under the iven
conditions. The ro osed a roach seeks to rovide stabili to the embankment with minimal
impact to the Lake Lure shoreline by using stepped MSE walls to provide a transition from the
steep grade along the shoreline to the more gradual stable slopes further upgradient For this
approach to be effective it will be necessary to protect the face of the MSE block wall closest to
the shoreline from lake wave action with a narrow band of rip rap.
Page 9 of 12

VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on 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/stimaide.html.
1. -Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
2. Mitigation may also be made by payment into the North Carolina 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): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount ofNon-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
Page 10 of 12

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)?
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
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 multi171iers.
* Impact Required
Zone , ~__~_ r ~~ Multiplier ,,,~,~,~-,,
1 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. N/A
Page 11 of 12

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. Proposed activities will not increase impervious area
Sediment and erosion control practices will equal or exceed those outlined in the most recent version of
the "North Carolina Erosion and Sediment Control Planning and Design Manual "
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 will be generated.
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 anafter-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: Project
will involve bank stabilization with rip ra along,~a proximately 80 feet of lake shoreline Land
use will remain single family residential and no additional structures will be built on the site
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).
Respectfully request Quick turnaround on permit so that construction work can be done during
winter lake drawdown. This will allow the most effective use of sediment and erosion control
.,, ~ - -
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 12 of 12

~,l~r,Si Professionals, Inc. ~ Figure. No.
CIVIL • GEOTECHNICAL • ENVIRONMENTAL ENGINEERING
LAND SURVEYING • SPECIAL INSPECTIONS
CONSTRUCTION MATERIALS AND LABORATORY TESTING
Site Vicinity Map EAS 07-140 Hutchison Bank Stabilization DATE: December 24, 200
113 Rock Point Road SCALE: No Scale
Lake Lure, North Carolina DRWN: Software

~r
r
`' //
r
r
I
r ~
r
P~kr~
-. ~--
zo a to zo as
(IN FEET )
LAKE LURE 1 inch = 20 ft.
XISTING GRADE
~\
.~
WALL "C"
'~i %;'%:%;%~ ~ ~'%~ `6,33' FROM BASE
~, BLOCKS PLUS CAP
------ `,
`~
,~
------
. \
GRID (TYP}~ ~T-T
1 't
r , t~1 1 i t, \, l ` ~
r i
l
r ~ i ~ ..~ ~ i '~
I s ~ 1 t ~~ ~
.
,~
,,
~i`
.;, ,
.i ~ '~ ':
~~
~ i ~ i /~~ ~4,~ _ ~ _
~'~, ; t co
33.25'
ooJ,o~
~
~ __ N79_01_46"E_ U,
---
~
_
`
~' ~ ~~.
~+
' RIP RAP PLACED ON
~ ~ ~
u'
~
i9
' STABILIZATION FABRIC
~^~~ ~ ~ ~i~
~ PROPEX 2006 OR EO)

i ..-~ry
~°~,~ ~-
~t^
LAKE SHORELINE

'
'
~ DEFINED AT
'°~ °~~.~ `~:;,
~ LEVATION 990

~~ ".. °` ~~ ~~S\~~
i , ,

`/t~/ ~ ,`
~
\
lll/~Q"J
r
W
,
a
,~ ~, _

.~ .w-~

.
„
W~1tL
~.
~~~.~ ~
~
`
~
' ~~:.
ALL .,A..
~- ~
WALL " '
~' p

~' - -w. - ~ ,
~ p
~ Zi
.-
/
..-

_~ ~ ~ .w

-
-

~
~

;
~
I y

~ ~
°~
~.._k~- .
~

~

~
l ~

__ 1
t
. _.._.

r
-
,~
~

~
,

~' ~
.~-
~ r ~
~ ~
~ j
t
~ --- -
~-J~ 81.78'
ROCK POINT ROAD
s 10'
0 LE ~~~
MRAPPEU .
GRAPHIC SCALE
REINFORCED SOIL
:~~ ~ ';
' ii'%,
i LOW PERMEABLITY
,
~' '
i;~/;, SOIL
STONE
.+ .
'. CONCRETE
,;.
WALL "B"
7.33' FROM BASE
11 BLOCKS PLUS CAP
MIN, LOW PERMEABILITY SOIL
i-KEYSTONE CAP UNIT
DRAINAGE BOAR
FABRIC
4" PERFORATED PVC
DRAINAGE TILE
SOIL FABRIC WRAPPED
ON BOTTOM AND SIDES
. _.
;'y, J.~ a ~ ~~
WALL "A"
x.33' FROM BASE
9~`BLOCKS PLUS CAP
NG
FABRIC
WRAPPED
BOTTOM
AND SIDES
~~~'~.
MIN. 3,000 psi CONCRETE)
WALL PROFILE
N TS
(See Accompanying
Information
for Grid Details)
o~wnoa ar wv auE ~ ra. m_iw ;.:_~,~ r~
~,.~ Site Plan Finure
ppy~ry .:. ~f,,,f"`"' t~ PROFESSIONALS, INC. 7
w>E m„srmo, ava6ceo~echnicalEnylneenns • LondSurveying . r,,ol~~reshn9 Hutchinson Bank Stabilization 2
ux;: ~~.m' is3s~oa~n~co~e,suoec 113ROCkPOIetRd.
~~~ creenvole,soumcoro~lna z96is RUtherFOrd CO. N.C.
~~ Phone [phone]. Fmc (8641234-1369
_.~
~ ~ ry I
- --~
~~ ~--~ ~ ~. ~ " ~ I
"~ ..
~ ~ ~ t °, ~I
~~ r ~ ~~ ~ I
~w. .. ,
-....
'''. \
rj I ~ \ , Ut (.~
~ ` ~ _ IOW r'
~-
`ti ro ~_~
~~~ ~
J ;I ~
J ~' .__
I ~ I
I °~ vii ~'
w--
_ --------_A---~S-- __\ ~' ~ ~
-- 2 02'16"yi - ~_~,_,_ ~,, ~ ~ U
38.65' ~-~~~~,,_,_, ~ ~~o°

'~ ~,
SCONE
RETAINING HALL SYSTEMS
RETAINING WALL DESIGN
Version Version 1.0.2 Build 12fi
Project: Hutchison Bank Stabilization
Project No: EAS-07-140
Case: Wall A
Design Method: Rankine-wBatter (modified soil interface)
Design Parameters
Soil Parameters:
Reinforced Fill
Retained Zone
Foundation Soil
Reinforced Fill Type:
Unit Fill:
f c g pcf
32 0 120
28 0 115
40 0 138
Silts & sands
Crushed Stone, 1 inch minus
Minimum Design Factors of Safety
sliding: 1.50 pullout: 1.50 uncertainties: 1.50
overturning: 2.00 shear: 1.50 connection: 1.50
bearing: 2.00 bending: 1.50
Reinforcing Parameters: Tensar-UXK Geogrids
Date: 10/19/2007
Designer: JAB
Tult
BX1200 1975 RFcr RFd RFid LIDS
3.56 1.00 1.05 504 FS
1.50 Tal Ci Cds
336 0.90 0.90
Analysis: Lowermost wall Case: Case 7
Unit Type: Compac Wall Batter. 4.40 deg.
Leveling Pad: Concrete
Wall Ht: 6.33 ft embedment: 1.00 ft
Level Backfill Offset: 0.00
Surcharge: LL: 0 psf uniform surcharge DL: 0 psf uniform surcharge
Load Width: 0.00 ft Load Width: 0.00 ft
Results: Sliding Overturning Bearin Shear Bendi
Factors of Safefy.~ 2.33 3.74 35.12 8.06 4.37
Calculated Bearing Pressure: 920 psf
Eccentricity at base: 0.45 ft
Reinforcing: (ft & Ibs/ft)
Calc. Allow Ten Pk Conn Serv Conn Pullout
Laver Height Length Tension Reinf. Type Tal Tcl Tsc FS
4 4.67 4.0 67 8X1200 336 ok 375 ok N/A 2.60 ok
3 4.00 4.0 119 8X1200 336 ok 395 ok N/A 2.89 ok
2 2.00 4.0 232 8X1200 336 ok 456 ok N/A 5.15 ok
1 0.67 4.0 253 8X1200 336 ok 497 ok N/A 8.12 ok
Reinforcing Quantities (no waste included):
8X1200 1.78 sylft
NOTE: THESE CALCULATIONS ARE FOR PRELIMINARY DESIGN ONLY AND SHOULD
NOT BE USED FOR CONSTRUCTION WITHOUT REVIEW BYA QUALIFIED ENGINEER

' ,.
STONE
w=ruruNC watt srsrEMs
RETAINING WALL DESIGN
Version Version 1.0.2 Build 126
Project: Hutchison Bank Stabilization
Project No: EAS-07--140
Case: Wall a
Design Method: Rankine-wBatfer (mod~ed soil interface)
Design Parameters
Soil Parameters:
Reinforced Fill
Retained Zone
Foundation Soil
Reinforced Fill Type:
Unit Filt:
f c
32 D
28 0
40 0
Silts & sands
Crushed Stone, 1 inch minus
g pcf
120
115
138
Minimum Design Factors of Safety
sliding: 1.50 pullout: 1.50 uncertainties: 1.50
overturning: 2.00 shear: 1.50 connection: 1.50
bearing: 2.00 bending: 1.50
Reinforcing Parameters: Tensar-UXK Geogrids
~-
3
2
1
Tult
UXK110047 3700 RFcr RFd RFid LIDS
2.50 1.00 1.05 1410 FS
1.50 Tal Ci Cds
940 0.90 0.90
Analysis: Middle Walll Case: Case 1
Unit Type: Compac Wall 8atter.~ 4.40 deg.
Leveling Pad: Concrete
Wall Ht: 7.33 ft embedment: 1.00 ft
Level Backfill Offset: 0.00
Surcharge: LL: 0 psf uniform surcharge DL: 0 psf uniform surcharge
Load Width: 0.00 ft Load Width: 0.00 ft
Results: Sliding Overtuming Bearing Shear Bending
Factors of Safety: 3.06 6.28 51.10 6.77 5.78
Calculated Bearing Pressure: 953 psf
Eccentricity at base: 0.36 ft
Reinforcing: (ft & Ibs/ft)
Calc. Allow Ten Pk Conn Serv Conn Pullout
Laver Height Lenuth Tension Reinf. Type Tal Tcl Tsc FS
3 6.00 6.0 91 UXK110047 940 ok 1079 ok N/A 4.22 ok
2 4.00 6.0 223 UXK110047 940 ok 1117 ok N/A 6.24 ok
1 2.00 6.0 585 UXK110047 940 ok 1156 ok N/A 4.98 ok
Reinforcing Quantities (no waste included):
UXK110047 2.00 sy/ft
Date: 10/19/2007
Designer: JAB
NOTE: THESE CALCULATIONS ARE FOR PRELIMINARY DESIGN ONLYAND SHOULD
NOT BE USED FOR CONSTRUCTION WITHOUT REVIEW BYA QUALIFIED ENGINEER

.®
STQNE
~a~~ ~ s~~
RETAINING WALL DESIGN
Version Version 1.02 Build 126
Project: Hutchison Bank Stabilization
Project No: EAS-07--140
Case: Wal! C
Design Method: Rankine-w/eatter (mod~ed soil inten`ace)
Design Parameters
Soil Parameters:
Reinforced Fill
Retained Zone
Foundation Soil
Reinforced Fill Type:
Unit Fill:
f c
32 0
28 0
40 0
Silts & sands
Crushed Stone, 1 inch minus
g pcf
120
115
138
Minimum Design Factors of Safety
sliding: , 1.50 pullout: 1.50 uncertainties: 1.50
overturning: 2.00 shear: 1.50 connection: 1.50
bearing: 2.00 bending: 1.50
Reinforcing Parameters: Tensar-UXK Geogrids
Date: 10/1

3
z
1
Tult
UXK110047 3700 RFcr RFd RFid LIDS
2.50 1.00 1.05 1410 FS
1.50 Tal Ci Cds
940 0.90 0.90
Analysis: Top Wall Case: Case 1
Unit Type: Compac Wall eatter.~ 4.40 deg.
Leveling Pad: Concrete
Wall Ht: 6.33 ft embedment: 1.00 ff
BackSlope: 34.00 deg. slope, 10.00 ft long
Surcharge: LL: 0 psf uniform surcharge DL: 0 psf uniform surcharge
Load Width: 0.00 ft Load Width: 0.00 ft
Results: Sliding Overturning Bearing Shear Bending
Factors of Safety.' 1.67 3:04 39.18 4.33 3.13
Calculated Bearing Pressure: 1194 psf
Eccentricity at base: 0.49 ft
Reinforcing: (ft & Ibs/ft)
Calc. Allow Ten Pk Conn Serv Conn Pullout
Laver Height Length Tension Reinf. Tvpe Tal Tcl Tsc FS
3 5.33 6.0 129 UXK110047 940 ok 1073 ok N/A 8.96 ok
2 4.00 6.0 292 UXK110047 940 ok 1098 ok N/A 6.49 ok
1 2.00 6.0 848 UXK110047 940 ok 1137 ok N/A 3.94 ok
Reinforcing Quantities (no waste included):
UXK110047 2.00 sy/h`
NOTE: THESE CALCULATIONS ARE FOR PRELIMINARY DESIGN ONLYAND SHOULD
NOT BE USED FOR CONSTRUCTION WITHOUT REVIEW BY A QUALIFIED ENGINEER