20070721 Ver 1_401 Application_20070407

r.
•
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A S S O C I A T E S
Apri125, 2007
Ms. Lori Beckwith
US Army Corps of Engineers
Regulatory Field Office
151 Patton Avenue, Room 208
Asheville, North Carolina 28801
Dear Ms. Beckwith:
OT0~21
PAYMENT
RECEIVED
oC~C~(~u~C~ p
Q
AI'R 2 7 2007
DFiy~ - :".':TER QUALITY
WET.1iNUS Ad1D STORARNATER BRANCH
RE: Pre-Construction Notification Application
North Fork Reservoir Dredging -Pilot Test
City of Hendersonville, North Carolina
On behalf of the City of Hendersonville, please find enclosed a completed and executed
Pre-Construction Notification Application Form for the above referenced project along with
the required supporting figures and. documentation. In general, the project consists of a pilot
scale demonstration of a sediment d~ewatering system that the City proposes for use as part of a
future full scale dredging project at the North Fork Reservoir.
It is proposed to remove a small amount of sediment (approximately 5 to 10 cubic yards)
by means of a "pit hog" type pump and to dewater the material on the bank of the reservoir in a
pilot sized Geotube as we discus:~ed at the pre-application meeting held at your office on
February 16, 2007. The pump will be maneuvered by a backhoe stationed on the bank of the
reservoir therefore no equipment will be in the reservoir or the stream below. The filtrate from
the Geotube, which will be relatively clear as a result of the filtering capability of the Geotube
fabric, is proposed to be directed ba~;,k to the reservoir where any remaining suspended solids will
settle out prior to discharge from thE; reservoir.
As you have seen via sever~il e-mail correspondences regarding this project, the City has
made plans to conduct this deinor-stration on Thursday, May 3`d. Therefore, we respectfully
request an expedited review of this application so we may proceed as planned. By copy of this
letter, we have provided copies of this application to both the Division of Water Quality (Central
and Regional Offices} and the North Carolina Wildlife Resources Commission for their review
and comment.
Engineering P l a n n i n g F i n a n c e
:11cGill Associ~/es, P. A. P.O. Bo.r 2259, Asheville, NC 28802 55 Brond Su•eet, Asheville, tVC 2880/
.e~R-JS2-0.57.5 Fur:828-252-25/8

f Y•
Ms. Lori Beckwith
Apri125, 2007
Page2of2
Lori, we look forward to your timely review and approval of this application. If you have
any questions or require further information please do not hesitate to call.
Sincerely,
McGILL ASSOCIATES, P.A.
.rt~ft.
MICR EL T. DOWD, P.
Project Manager
Enclosure
cc: Mr. Lee Smith
Mr. Ron Reid
Mr. Ian McMillan w/encl. (4 copies)
Mr. Kevin Barnett w/ encl. (1 copy)
Mr. David McHenry w/encl.. (1 copy)
Mr. Jeff Bishop, P.E.
06550/letters/Ib25apr07.doc

H
C?ffic~ C,`sc O~~i.~: ---
` F~~rm Vc~sion May 2002
0 7 p 72 ~
I.
I_.
(If any particular item is not applicable to this project; please enter "Not Applicable" or "N/A".)
~~~-a~~~s~n~
1. Check all of the approval(s) requested For this project:
^~ Section 404 Pei~nlit ^
^ Section 10 Permit ^
401 Water Quality Certification
PAYMENT
RECEIVED
Riparian or Watershed I3u~f~fer Rules
Isolated Wetland Permit from DWQ
2. Nationwide, Regional or General Permit Number(s) Requested: 1
3. Ii'ihls notificatiun is solely a coul-tesy copy because written approval for the 401 Certification
is n~~t required, check here: ^
4. Ifpayrment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation o~t impacts (verily availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ^
5. If your project is located in any of North Ca.rolina's twenty coastal counties (listed on page
4); and the projr;ct is with~xi a North Carolina Division of Coastal. Nlar,agenicnt Area of
Environu~ental Concei~t~ (see the top ofpage 2 fer (-urther details), check hb ~ n
~'C~u~C
r1.I~z= Ii.'«a:t ;?' ,, 'T,r6tiC^+t
A f R i 7 2007
1. Owner/Applicant Information
DEAR - :"DATER QUALITY
Name:__ _ _City oF)--Ie_ndersonville - __ WET1ANbSR,~pgTpl~~ygTERBRANCH
Mailing Address:_ _P. ~. 130 1760 -
-_-__-- _ _Ilendcrsonville N. C. ?793 - ---
Telephony Number: 82369"i^0^ -_ Par. Nuniber:_~42^_6~~7-30?4
F;-rn«il ~`~ddress:_(smith(r~;.cit~~olhcndersonville.or~r
?. Agent/Consultant In Formation (A signed and dated copy of the Agent A~ thoriz~rtion later
must bc: aitache~! if the A!~,~~nt has signatory a~~Gthorit_y for the owtler/applicant.)
Nam;;:
C'ornpai~y f`,ftiliation: -_ _------------- _
rvlai ii ^ <~, r'1 dd res s: ----------------._ ._ _------------- ---- ---
----- ---------------------------
'i'r,; epLoli+.; T~~~.iinber: -~----------~ -- ~~a~ i~tuinher:
-------------------------
I',-111ai1 Atid~~ess: ---
h"". `i Ot ~

III. Projccttnforniation
Attach a vicinity rtiap clearly showing the locati,_nl 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
~lnd 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 mapsand 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
USAGE requires infoi7nation to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers filll-size construction
drawings rather than a sequential sheet version of the hill-size plans. If hill-size plans are
reduced to a small scale such that the Iinal version is illegible, the applicant will be infornled that
the project has been placed on Bold ul;til decipherable maps are provided.
1. Name of project: North Fork of the Mills River Reservoir Dredaii.~ i~-Pilot Shidy
2. T.LP. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): N./A
4. Location
County: I-lenderson Nearest Town: Mills River
Subdivision name (include phase/lot number):- 1\r%A
Directions to site (include road numbers, landmarks, etc.): see attach~:d Vicinity Map
5. Site coordinates, if available (UTM or Lat/Lone): Not Available
(Note - if project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): __ N/A
7. Nearest body of water (stream/river/sound/oce~rn/lake): North Fork Mills River
~. River Basin: French Broad
(Note -this must be oue of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.elu-.state.nc.us/admii~/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 area_is undeveloped and is located in the Pis<~ah
~tiational Forest
10. Describe the overall project in detail, including the type of equipment to be used:
This roie_ct consists of a pilot scale dred~in~ and dewaterin~ o ~cration to d.;nlonstrate the
c~~abilitics of the pro used dred~ith ~uul d~;v~ateri~~~techni~ues. specifically the use of a

Pa~~e < of 12

Cco-"I"ubc dewatcrin;; apparatus. "I,he~~roposcd activities would include the Lice of a solids
handling ~~ump maneuvered b a backlioe si~ItloneLl on the hank of the reservoir) to pule
;_cdiment 1-rom the reservoir into ti~Ie Geo-Tube which will filter the solids from the slurry..
Filtrate ti-om the Geo-"Tube will be directed beck into the reservoir and the Cco-Tube,
including the filtered sediment will be disposed of off site.
1 1. Explain the purpose of the proposed work: The City of Hendersonville h1s hro osed this
activity to_s_erve as a demonstration of the dewaterin~proccss in snppol-t of a future permit
applicati+.I for a fiIll scale hydraulic dredging of the reservoir as is needed to restore the
reservoir. _
YV. Prior Project lF'(istory
if jurisdictional determinations and/or permits have been reduested 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 peI-mits and
certifications were issued or withdrawn. Provide photocopies of previously i~sued pcrmita,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDO'T project,
list and describe permits issued for prior segments of the same T.LP. project, along with
construction schedules.
N,/A
~. ><+uture Project ~'Iaas
Are ary future permit reducsts aniicip~~ted for du~, ?~roj~~-,~t`? I_rso, d~s~.;ri1-,e th;; al~ticipatcd ~~~ork,
and provide justification for the exclusion of this ~~,~or'. (~:,~I~l the ciit~rent alrplicaticr-.
.~:; stated in .Item III.1 1 above, the City inttiacis to ap_t_i~ol_a f 1_urc_~rn;it fi>r a hill scale
dced~ir~~rLilion_ The mealLS and method; will he ~,iifferent fur this o~cratioi~, s~citically a
h~~draulic dredr;e will be Llscd and the fi Itrate will he <<.iurncd to the river below the reservoir.
~%I. 1'roposetl In~~hs~c~Is ta> ~V~atca°s of tae United ,>fates/"VV~i~c-~s of ±L~c S~atc
It is the applican't's (or agent's) responsibility to determine, delineate and Wrap all impa~.~ts to
wetlands, open water, and stream channels associated with the l,roject. 'hhe applicant must also
provide justi~Iication i-or dles~. impacts in Section VII. below. All proposed impacts, permanent
and temporary, must be listed her;,in, and ir~ust be r„learly identifiable un an a~~companyint; site
plan. All wetlands and waters, and all strean~I~~> (intermittent and perennial) must he shown on a
dChliCatiOn Illap, "hetClel' OI' Ilot Impacts al'e; pCOpoSCCi t0 theSG SyStenl.°.. WCtltind and Streflrn
evduation and dciincation toi7ns should be il~clul~cd as r:Ippropriate. Photographs clay be
included at the appli~:~ant':~ discretion. If this propescd impact is strictly for wetland or stream
mitigation, list and describe the irnl;act in cctioP Vlll below. If addi oral space is needed for
luting or description, }:~l~;ase attach a s~.:parate sheet.
1. Provide a writicll de:;crii~Ition of the proposed iI»pacts: -.__-- ----~'hr~__hr~~~t___~r,jll-
tci ~,~o_~rily-i.~~p~ct thc_Norih [:o,k ti~l~lis E~~~~cr :~:,~,~t;on a~~ «IC:;L~It ~~t_~ < <~r~;:Li~u~~~~~~in~~~;z~T
j~a`~;~ ? ~~i I?

activities however due to the relatively low pumping rate of 100 ~ptn it is not anticipated
that these impacts will be significant. Other temporary impacts could include those
associated with the construction machinery however these are not anticipatai to be
significant as traffic of this ecLiipment will be limited to previously disturbed and stabilised
areas such as the e~istin;; road way and vehicle parking area Hear the dam.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on map)
Type of Impact* Area of
Impact
(acres] Located within
100-year Floodplain**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
N/A

usr cacn impact separately and identity temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, till,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts clue to both struchire and Hooding.
** 100-Year floodplains are identilicd through the Federal [mcrgcncy Management Agency's (FEMA) Flood Insurance ~atc Maps
(Ff1~M), or FEMAapprovcd local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http:/hvww.fema.gov.
~~** List a wetland type that best describes wetland to he impacted (e.g., freshwater/salhvater marsh, forested wetland, beaver pond,
Carolina f3ay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List ilte total acreage (estimated) of all existing wetlands on the property: N/
Total area of wetland impact proposed: N%A
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on map)
Type of Impact* Len~~th of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)

~:
List each nnpact separately and identity temporary impacts. h~~pacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both su-ucturc and Hooding), relocation (include linear feet bctbre and after, and net loss/gain),
stabilisation activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. if stream relocation is
proposed, plans and profiles showing the linear fi>otprint fix both the original and relocated streams must be included.
~::r Sn~eam names cart be found on USGS topographic maps. If a steam has no name, list as UT (unnanicd tributary) to the nearest
downsn~cun named stream into which it flows. USGS maps arc available through the USGS at 1-800-358-96]6, or online at
ww v utis,s.~rov. Several Internet sites also allow direct download and printing of USGS maps (e.g., ~~~e~~~.tuon_zone.cr,m,
w~;n~~.manc~ucstcorn, etc.).
Cumulative impacts (linear distance in feet) to all streams on site:
1'.~~~e 4 of I?

~. Individually lisl all open water impacts (including lakes, }ponds, eshrarics, sounds, Atlantic
Ocean and any other water of the U.~.) below:
Open W rtu Impact
Sltc Number

(ind)carc on neap)
Type of Impact'k llrca of
Impact

(acres)
Name of Watcrbody
(if applicable) "1'ypc of Waterbody

(lake, pond, estuary, sound,
bay, ocean. etc.)
1 Dredging 95 North Fork Nlills River Res. reservoir

* List each ii7inart cr~ rv..-~,t~l., (
,.,,
. ~ - ------~ .-...~, •,, ~••~ '^~p.~.,~„. ~i u)ni~,~a ui~iuuc, UuL al-C nUC nnL[CU l0: rlll, eX Ca VBrIOn, dl'Cdging~
Hooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated ~~etlaud and stream impacts should be
included above in the wedar~rd and str"eam 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 ail that apply): ^ uplands ^ stream ^ ~~.vetlands
Describe the method of const~lrction (c.g., darn/embankment, excavation, installation of
draw-down valve or spillway, cte.): N/A
Proposed use or purpose of pored (c.g., livestor_k «~atering, irrigation, ~~~s~l,t ~(( trout l~x~nd,
local storl~nvater requirement, etc.):____"________.,_______~~r/~~
Srzc of watershed draining to pond: N/A Expected pond sur"l,~ ~~ a<< ~ 1`J/A
~~ ~. ? ra~,~~,ct ~IuS~il'icatioai (Avoid~gtrcc <~c~d 1'Vlini~nization)
S1)ecifically describe measures taken to avoid the proposed impacts. It may be useful to provide
ire{i)rrnation related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, I~~wer-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, diSC;l_rSS construction
tc;chniquos to be followed during construction to reduce impacts.
C or~sh-ucti_on traffic will be con ~~r;rrne<1 to_~revi~~usly distl_rrbcd and stabili~icd areas and the
dreclgi~l~~~~oc ss will utilize ~~ small 100 ~,pn~urn_~~_hich ~viil rninir~ri~e ~iistrlrrrance to the
-- - -- - -- 1_-- __
rc~er_voir. _Filtrab: water ti'om the Ceo-"Tope that will be rehrrncd to the reservoir will be
rc l lriv l_y clear as a result of th(. tiltcrin~ c;~)abilit~oi~ the fitbric and ~rrry_ rc,i_1_+i;r rl,~ ;~rJ~ci~cied
_ -------
---- --
---- --
~o~rc_s shot"rid settle out itl the r:,v rvoir so a~> not to co~~~rurnisc tf)1, w tt(:r_au~)lii-~ ,~t the stream
-- -___.
-- -----
-- -- - -

I%yVC~ -- ir~t ar;cord~nzcc v:i(fl 15~``~ >ti'hC~ 2I-1 .0500, ml'.i~;U.icn rr.~.v be ,~; ai~-~_d i;5, tlic ]`J!:
~ J
t)1vrSlOr'. Ol ~~ ;~',": `.' {)UUlrt~ lor~ piC)1`.1C1~ 11;\'CI`.'rn~T ;~1'CaiCC l)~iri G~ Cal-(-a1 t(1 C1 i.:~;+~ Oi ;;.1~paC~;i tO
i'Jr~~' 9 ;,f ~_-'_

fi-eshwater wetlands or greater than or equal to l50 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment arc 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 ~~roject; 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
fi~nctions and val~_ es, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE. or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concuiTence shall be placed on hold as
incomplete. An applicant may also choose to r, view the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
htt ://h2o.enr.state.nc.us~ncwetlands/strm~ide.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 offsitc), 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 cuiYent site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
N/A
?.. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wlp/indc;x.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following iufonnation:
Amount of stream mitigation requested (linear feet):
Amount ofbufter mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigration requested (acres)
Amount of Coastal wetland mitigation requested (acres}:
N/A
N/A
N/A
Ni n
N/A
~'~~~ 10 c,F ~

IX. En~Yironmental I)oclmlentation (required by ~Z~'Q)
D~~~ ~~ ~ the project involve an expenditure of public (federal/state) fiends or the use of public
(federal/state) land?
Yes ^ No ^
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Enviromnental Policy Act (NEPA/SEPA)`?
Not:;: If you are not sure whether aNEPA/SEPA document is required, call the SEPA
coordinator at (919) 733-503 to review cun"ent thresr~olds for environmental documentation.
Yes ^ No ^
If yes, has the document review been Iinalized 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 WaterslYed I~t~ffers (required by I~~Q)
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 ir,pacts in Section VII ~~bo~~e. All proposef:l impacts must oe listed herein,
:end must b~, ~1car'y id"ntilial,le on the accorrfpanying site plan. All bufifers I~IUSt he shown en a
l~iap, Wllet~ler (1r :",Ot ]tli~7aC"tS ar~r ropCed i0 th; JuflCt"S. C01"i"fspoll(jerlC:, ~."Gl"n tlif; D~'v'(~
-LCglOnal ~~fjl(;°. ii; 7.i}' l"iC 11'1<;~l'C~l'.:~ e .eflf±'Oyi'Iat~. I~IiOtOL,:I"<:.I7j1s ma)/ aiSO l)+.', :I1C;~liC~C',d ut ij"lf;
applicant's dlscrctlor,.
Will the project impact protected riparian buffers identified within 1 SA NCAC 2I3 .0233
(Meuse), ISA NCAC 2,B .0259 (Tar-Palniico), l5A NCAC 2F3 .020 (Randleman Rules and
W~~itcr Supply Bu ier r?equiremcnts), or other (please~identify~_ _ ~)?
Yes ^ No ^ If you ans~°~er~d "yes", provide the following illfornlation:
Identify the square f.,ct and acreage of impact to eacl_i zone of the riparian buffers. If buffer
mitigation is req~,iired calculate the required amount of mitigation by applying the buffer
multipliers.
*
I_~ `= __
_ ~ Impact
(sctuare icet)
N/A
Ivlultipiier
~ 3 ~- Required
ltgitigation
N/A

one t exterxu rnu ,u tee[ pcri~endicular from ne~ir brink of channel; %one 2 extends an
addi(ional "?J beet fro~u the a!~c of lane I .
I~;~IY(~ 1 ( C)i f

If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration /Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
N/A
XI. Stormwater (required by Dw'Q)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss starmwater controls proposed in order to protect surface waters and wetlands
downstream +iom the property.
~:II. Sewage Disposal (required by D~~Q)
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
~~IiI. Violations (required by D''JVQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ^ No ^
Is this an after-the-fact permit application`?
Yes ^ No
XIV. Other Circumstances (Option al):
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 constnlction 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).
~~
~~~,I~Iad~~antL4ger~t's Signat~~re ~I~a~
(Agent`s signature is valid only if an authori~afion le'ter Ii~c,r,~ th:, applicant is provided.)
Pa<.c 12 oi~ 1

~a,~
CITY OF ~iENDERSONVILLE
NOP,TH FORK WATER
SUPPLY RESERVOIR
~ ~-.~,..
~,-:,.~
~~RC~J~~h ~.~~~,T
~- _~

CIIY OF HENDERSONVILLE
P.O. DOX 1.760
HEN{~ERSONVILLE, NORTH CraROLINA 2.8739
Pr<OPOSED CONS1RUCi,, ,JI: -- --
~:,i~r ?~_~~o,/%~~ Piro r i~S F
LOCA.IION:
~.°ISG?,H NA.IONF,L FOREST
1. ~ ~ ~) v l ~: I~ i~ l E ~- -- ---------------
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~.I I nl-~ ~,~~~ h~TC. ~nL.i 7~, - ~. _-
~i_. , nl~_, < 1~/ ~ .'~ _ I I ~t~ 2
F~RO~iEC ~:
NOR?~ i f O;f< V`~'F~TER SUPPLY Ih,~°ROVEM~N I S
ADJ.=,CrN~ PTRUPERTY~ OWfJFRS:
------ - T -- ~-- ---- f
F ~ `~ ~~~ 4~ ~5 I
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e~
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ronnsT;?~,_r ,~.,rn~a i„ i-c a_r.< <;~ ~-c'is

P F~ t~..,C~S c_f~
1~'fl_OT 517ED GEO---TUBE 01\ ---.
Pt_ASTIC SHEET V'11TIi SAND
BAG (OR EQUIV.) CONT~';1NMENT.
Fil_TRATE 70 DRAIN BAGY. TO
RESERVOIR
ELETCHER CREEK

PROPOSED
100 GPM SOLIDS HAF ;!LING -
F-"UMP MANEUVERED BY
SACKf-IOE STATIONED ON
DANK. PUMP TO DISCHARGE
`~~~DIMENT SLURRY TO
C~ O-TUBE FOR I~ISCHARGlI*!G
`<
RAW WATER INTAKE
<,;
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j~~jjjj/jjj/~~~
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RAW WATER LINE TO j
CITY OF f1ENDEP.SONViI_LE
WATER TREATMEN~i PLANT ,~~
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^//~ ERVO\R~
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~~RT~ MIELS RIB
NORTH FORK DAM
/// !/ `- CITY OF I IENGERSONVILI,E
~///,// NORTF~ FGRK WAIT_R SUPPLY
~~ ~-~ ~ ///// RESERVOIR
~~~:_~~~V~IR C`'L,~r~l
____._ ~NAI;s~ .__.__~__
APP~_IC%NT:
C11Y CF HENCER~ONV!LL_E
F'.i). [3OX 176!
i ~E_Ni`LRSO^d\.%iL.F, NORTH CAROLINA 2£739
i'i<OPO~.ED CONST~ZUCilOPi:
`il_- Rr_N1v`;/AL PILOT TEST
!_ OCf~ TI (~hJ:
i'1S{BAH f'dATIOtv'riL rOREST
CC !Jl ~ l
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NOTES:
1. DE4VAIERED SEDIMENT A,ND GEO---iUuF
TO BE DISPOSED OF OFF--SITE f3Y CITY.
2. MAX CAPACITY OF PILOT CEO-1LBF_ IS
APPROXIMAI-LY 1 ~ CUBIC YARDS.
PROJECT:
NORTf-I EORK WATER SUPPLY IMPRO~IEMENT_~~
ADJACENT PROPERTY OWNERS:
1. UNITED STATES ~ OREST SERVICE
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VJi'TH GLdTE?71LL~Cd~~1~['~!~ a;4! ~~.~ -i'EC~i~fdLC)G`Y
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R Division of Ten Cate i~lia,ol~n c
The t ~~ry begin ; in 195;3 whe ~ atastrol ;I nc flood struck the coast o` ricL'ar id res~ Ifing in great loss of life. Dutcl~~ marine enginc;ers souctht now
i7~etho~~ and m=iterial to br,ilJ st~ucturn; fer coastal defenses so tl.is disastc;r would not b~ repeated. Nicolon B.V responded by developing the
first gc ~ i ~ ~aor of geotexi Ic s fo r~inforwr~ lent and erosion control io be use d in the ii iproved coat J structures, In 1991 Nicolon and A~i'rafl, the
prim'~ry U a .,cot;>xtile c;o~ upany rnerg .,~ Ir form Ten Cate Nicolon. Mil aiech is a recorfly formed division of >-en Cate Nicolon that will Locus on
tl~e rnarketinq and support of tl ie Geocor~tair~rnent technology.
- _ ~~~~
In 1991 1 :~i Cate Nicolon;oined forces with the U. S. Army Corp of Engineers under the "CPAR
Progr~~m". The objective of ibis program was for private industry and goverrn7iental agencies to
consolidate resources and develci~~> technology that would tie beneficial for government funded
construction projects. Ten Cate Nicolon and the COE over the next two years committed several
r;~illion dollars for research and actual field application to prove the feasibility and benefits of
Geoconiainment technology by using specially developed high strengtl~i geotextiles with unique fil-
tr~ition and retention properties. l~~hrough the; CPAR Program the tecfmoiogy for Containment and
Dewatering was developed and proven to have immediate environmental and economic benefits
for government and priva!; industry.

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High strength permeable geotextiles with
uniquely designed retention properties are fab-
ricated into Geotube~" containers tl-tat can tie
filled with fine grain sludge, hazardous contarn-
inaied soils, or dredged waste materials. The
geotextiles uniqu-~ waave and fabrication cre-
ates small pons tl~~a1 confine the fine grains of
the contained material.

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Excess water drains from the Geotube~ con-
tainerthroughthe small pores in the geotextiles
resulting in effective dewatering and efficient
vob~rne reduction of the contained material.
This volume reduction allows i'or the repeated
filling of the Geotube'"~ structure,. In many cases
the decanted water is of a quality that can be
returned to native waterways or for reuse.
Over tl~~e past ter. years i~~undre:ds of projects have been installed and their success doc-
urnented. Papers on these projects have been published and awards presented for ben-
efi;;ial use of new technology. lF~is information is available upon request.

After the final cycle of filling and dewaterir .g, the
retained fine grain materials can continue to
consolidate by desiccation because tfie resid-
ual water vapor escapes thro~_igh the geotex-
tile. This results in the rno cost effective
residue state for disposal.

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~~ he industries' paper mill retention ponds are
filling to the : naximum capacity with high water
content sludge residue from the manufacturing
process. To continue operations at most plants,
additional retention ponds !roust be built or the
sludge rrnrst be removed. The construction of
additional retention ponds requires a lengthy
environmental permitting process and conven-
tional methods of sludge removal are time con-
suming and costly.

Environmental consulting engineers have rec-
ommended large diameter Geotube" contain-
ers for the containment and dewatering of tf~aese
types of sludge residue. This option can be con-
ducted on site vdithout interruptio! ~ of the manu-
facturing process. The containment is effective
and volume reduction is effioient. The dried
residue can be burned or disposed in a landfll at
a greatly reduced cost. When compared to all
other methods of dewatering, the Geotube`
method is the most cost effective.
'~
fvlillions of gallons of sludge have been pumped into large diameter Geotube`' containers. The
~eotube~ containers are pumped to capacity and dewatered repeatedly. The effective volume
reduction of sludge has been as high as 66°%. Since the initial introduction of
Geotube` technology to this industry, programs of sludge residue managertrent t'
and control have yielded tremendous operational cost savings. r a
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Mvst municipal sewage treatment plants Large Geotube~ containers are now being rec-
become Inefficient because their digesters and om~nended as containers into which fhe sludge
iagovns become filled with sewage sludge can be pumped direct from the digesters and
past the safe operating levels. Traditional lagoons. The permeable geotertile U.~Irich forms
methods of removing the sludge require the the geotextile tube outer layer allows sludge to
use of haavy equipment for dewatering before be dewatered very efficiently while containing the
it car. be removed from the site for disposal at fne grain solids of the sludge. In most cases, the
a landfill. dewatered effluent is clear and safe enough iv be
returned to the plant. This methodology greatly
reduces the volume of the shudge and the cost of
disposal while allowing the continual operation of
the digesters and lagoons.

_ _______ __-1 ~Illivns of gallons of sewage slu dges are being removed from digesters and
j lagoons to be dewatered on site. This use of Geotube`" technology is allowing
ope a'e•s to effectively control their cost of dewatering and disposal.
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Power plants and other industrial installations
have a problem with the natural sediment
accumulating at or within their intake structure,
severely impacting the flow of cooling water.
Many times these sediments contain heavy
rneta's and other contaminants. The plants
must dredge; away the sedirr~enis to Increase
the capacity of the critical cross section fow.
.,
To reduce the volur7ie of disposed dredge
materials and to contain any of the contami-
nants, large Geotube° containers are routinely
specified by consulting er~gineers. The
Geotube'° fabricated tubes allow for file dewa-
teriny of the dredged spoils on site vdhle allow-
ing at least a 50°~~ volume reduction of mater-
ial and mairrtaininy safety and security at the
facilities.
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Incorporating the Geotube" technology adds to the expediency of a project and ~ -
proviaes an environmentally clean and cost effective way to handle dredge mate-
rial. This all can be achieved without interruption of power generation and other
industrial processes ~ f ,,
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Rivers, k ys, harbors, marinas, parts, at~d dock The U.S. Army Corps of Englne;;rs are nay ~~~,
racilifies in the marine environment have been specifying Geotube~' geosystems as the best
collecting contaminated sediments from Indus- management practice for dewatering conta;r;i-
trial run-off for many years. Routine dredging is Hated marine dredge materials. The contami-
required to remove These contaminated sedi- Hated sediments can be ranoved by either
menu. The cantarr;inated dredge materials hydraulic or mechanical dredging, then I
most often must be disposed into local classi- pumped directly into Geotube" containers for
fed landfills. However, the volurrie of water gen- containment and dewatering. Many times this
erated in the dredging eperafior; greatly increas- can be aocomp6shed at or very near the site by I
es the transpcr!ation and d'spasal costs. utilizing a der~aterirg basin where fhe tubes ~i,
can be stacked to maximize space. i
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I lundreds of thousands of cub ic yards of contaminated sediments have been suo-
~,~s,,: f~~ cessiully dredged, contained and dewatered from rivers, bays, harbors, marinas,
~'""r ~, ,~,~- ~ ports, and dock facilities over the past decade. The Geotube~' containment and
,..
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a.,waieri; ig proc..~s has been

proven to be the most cost effective methoa utl!ized

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to date. i

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FPi7JECT SPECIFIC TEc,l ~`JG:
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~ -' Ten Cate filcolon has wnrketl
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. .. - ~.,., ~ _ - with the U. S.Army Corp of E`lgi-
' ;~ ~~ veers, the Geosyntiietic Rose ::cii
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Insiltute and p~ivate consul~iv0
~•t-~ ._ ; j ~ ~`-: ~ enyineers to develop test meth-
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~ eds that can be utilized to predict
z~ I the performance of Geotute`,
` ; ~ Gcobag"', and Geocontain;;r~'
Y ~ - "~ ~ dewateriny systems. One s!~cl~i
method is the NANGIN6 RAG
_ ~ TEST (GRI GT-12) This test
~ ~ ~ ~ ~ allows the engineer to detcrmir.e
v the type of geotextile v~tuch
;' should be used to contain the
~` ~ . ,,: - . _
- fine grain materials but allowing
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the effective dewatr'ring of sire
` specific sludge.
DESIGN ASSISTANCE:
Ten Cate Niculon USA uses thee.
SofftwinT"' computes design
software to model the dirnen-
sions of the Geotr b ~~~, Gcobag-",
- r. ~ or Geeccntainer~` structures.
_
s°
Sofftwin'"' also provides ii~e
„
~~
~ expected filling volumes, and cal-
-: ; ,. ~'
- - ~ ~~ ~ ;: " ,~ = culates the stresses that the
structure will experience during
the critical time of filling and
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dewatering.
CUSTOM FAE3RIGATION:
- ' ~ - Ten Cate Nicolon has been fabri-

"' ~ j
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eating Geotextiles for over ?5
, Years. The Geotube', Geobay"' or
f, .1 Geocontainer` structures can be
`' ~ ~ custom fabricated to meet tt~e
requlremenis of each specific
protect. Ten Cate Nicolon has
` _ more than 100 types of geotex-
tiles from which Geotube~,
-~- - .,---r Gcobag"', or Geocontainer" struc-
- tares can be fabricated. Also, Ten
Cate Nicolon has fabricated

R structures with circumferences
`~
,. _ I up to 120 ft. and lengths up to
1.000 ft.
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s~'` j 1NSTAl_LATiONASSISTANCE:
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Ten Cate Nicolon has the largest
staff of engineers, t2chnicia~s,

~ a,d sales personnel that can
- - pr0'~IIdB fiCG InStahaf'~ r' a5~ 5-
tftnCe Ll th' (n03f ChilliCi!g In(J

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