SW8980434_HISTORICAL FILE_20001108

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO
SW8 °►gp�}3`i
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20 0o I \ b $
YYYYMMDD

Jtat( of North CM0111M
Dc> miIntent of Cmuonmcnt
and `Atuta] Resources
NN dia—I Rcrlanal Office
lame B hunt ll , GoALrnoi
Bill Holm in, �(Clhtai\
Dn moll of Watu Qu MIN
Novcmhcr S 2000
Mi humeth A hu 6man Altot nc\ m 1 let
Ill ill I IC id Isl and I muted
PO liov ,069
R Ild I Iced Isl and NC 2S461
1�
NCDENR
NOR1H CAROLINA DEBAR MENT OF
ENVIRONMENT AND NATURAL REsou RCE5
Sublect Permit No SWS 9SO434M0D
Ro\\ Boat Ro\\ Subdt\ ision
Hlgh DenI;It) Subdlvlcion itommdtct Plolcct
Brunw ick Count\
Dcu NI klikill I1
I hC A\ IlnIn-, loll Rcslonal Office ILIV( d d eomplcic Slot Ill vlatu N 111"Cnwnl Purnn Apphe Icon for the Mod lf e it
of Rovv Roit Rovv Subdiv Ismn on OLtOhLI 2 2000 Stdff ICVICvv ofdIL plain Ind spLu(iCauons hav clCtumnlLd ihal the
pu11LLt 14 plohosed vvIII comply with the Stommatei Repulauonc set forth m rule IAA NCAC 2H 1000 We nc
fonv 11dln_ Punt No e\VS 9 d,,IMOD dated November S 2000 foi the Lonunucd eonstlucuon of the plolLct Rove
Ro it Rovv Subdly Ision
I his pu mlt sh III he effectIVL fian the d uc of issuanc,C untll Arid 7 2010 and shall be subject to thL condnlons and
IunuauonsdsspcclfiLdthuLill PILIsCav specidlattcnuontothLOpcianon indMamtLndnccieqununcntill thispcnnit
1 adul c to establish an adequate 9v stem for operation and maintenance of the stornvvater lit magemCni systun will Icstllt
Ill ftIMIL complldlILc plohlunq
If u)\ parts icquuuncnts oI Itn)nauons Contautcd In this pcnnu me unaccCptdbIL Vou IWVC ihL HLIll to Icqucst an
adludIG Ilory 11Lal in; upon vvI Men Icquest x+ithln them (30) dw s follow In; Iccclpt of this punnl I hls ILqucsl must he
m if,- toi m of 1 vvntlul pcullon confonnine to Ch iptei I SOB of the North C.molm 1 Gcnelal Statutes and filCd With the
OIfILL of Millinisu Itive IILum,s P O Dia"Li 27447 Ralcigh NC 27611-7447 Unless such dun uulti uc made this
Punt sh ill hL final and bmcfin-
If \ou ha\L m\ questions of need additional mfoimation conc.Lnung this Ill tttu please contact Scott Vinson of me ai
(910) ;9� ;900
Sincere h
r _,
Rick Shtvcl
WatLI Qudhty RC,umdl Supuvlcol
RS / s iv S \WQS\S I ORMWA f\PI RMI 1 \9SO4>4 APR
LL Pern D I\ is
DLI mev Aycock Biunw el, Counh Inspectionv
Scon Vinton
\\ dnonion Rc_ion it OfficL
Cum it file\
127 ( irdni it I), 1 tit Wilntmr,ton North ( Irohn i 2840
\n I qu it Opportunm Vtfrmi LL Action I mplovu
I dephnm 910 `19�, 3900 1 AA 911) 3�0 2004
5,O, rnnilLCIM/ pool umcunu.i pipet

State Stonmwater Management Systems
Permit No SW8 980434MOD
S I A IF OF NORTII CAROLINA
DFPAR I MFN7 OF FNVIRONMGN 1 AND NA I URAI RESOURCES
DIVISION OF WA 1 FR QUALI 1 Y
S I A I E STORM WA I LIZ MANAGEMFN7 PERMI I
HIGH DFNSI 1 Y DEVEI OPMFN 1
In iccoidance with the piovrsions of Attiele 21 of Chaptei 143 Geneial Statutes of Noith Carolina as amended,
and othu applicable I awS RUIC9 and Regulations
PI RMISSION IS I I1-RCI3Y GRAN I LD 10
Bold Head Islam/Lumied
Roil, Boat Roil, Subdrntston
Bi unsuvtck Counly
IOR IHh
constiucUon operation and maintenance of one mfiltiatiom wench systum and thi c infiltiauon basins in
comphancc with the pIovisions of 15A NCAC 211 1000 (hcicattcr icfei led to as the "slot nni a2t t ulcs ") and the
appIovul st0I mwatu management plans and specifications and other suppoi ling data as attached and on file with
and appiovc.d b) the Division of Water Qualit} and considcied a pail of this pumrt
I his peumit shall be cffcctrvc from the date of issuance until Apid 7 2010 and shall be subject to the following
specified conditions and limitations
I DP SIGNS] ANDARDS
[Ills permit is elrectivc only with iespCct to the natuic and volume of stoimwatei desuibed in the
application and other supporting data
2 1 his stonmwatel system has been approved loi the management of stoumwatei iunoff as dc.su ibcd on
pages 3 till u 6 of this pei mit the Piolcct Data Sheets I he subdn,ision is pcimitted foi 18 lots, sec I ahibit
A for the, allowable built -upon circa for each lot and common aica
3 Appiovulplansandspccificationsfoithispiolectaieinempoiatedbyiefuenceandaiecnfoiccableputs
of lhcpunmt

State Stoimwatei Management Systems
Permit No SW8980434MOD
DIVISION OF WA 1 ER QUALI I V
PRO IFC I' DA I A SIIFET
PiolcLt Nam,
Row Boat Row Subdivision, Dramagc Bain 91
Pcimit Numbu
SW8 980434MOD
I o,aUon
Brunswick County
Applicant
Mi Kcnncth A Kii1mian, Attoincy in 1 act
Mailing Addiess
Bald I lead Island I imitcd
PO Box 3069
Bald Ilead Island NC 28461
Application Dale OLtobet 2, 2000, Modification submitted
Name of Receiving Sticam / Ind,v # Bald I lead Island Mauna / 18-88-8-5
Classification of Wat,r Body "SC"
If Class SA, chloride sampling 1,wltS n/a
DLvgn YO1 m1 1
Infilllation IienchDepth feet 250
DiamagL Aiea aucs 1 15
1 Dial I mpci vIous SUI faLC,, ft2 23,958
Offsite Atca enteimg I iLnch, ft2
1 tench Dimensions L It
(13 huichcs 11-1 Ihia ll-l3)
W It
H It
RLquuLd StoragL VOIUmL, Ft'
I'iovid,d StoiagL VolumL, ft'
I op of Stoiage hlevation I-MSI
Controlling 01111"
IypLof Soil/I;xpLLted Infiltration Rate
S,asonal I ligh Watei '1 able
I ime to Diaw Down
none per I ngineu
11-1=375' 11-2=315' II-3=315',11-4=385',
11-5=385' 11-6thiull-13=31 5'
11-1 thru 1 1-13 = 2 5'
11-1 thiull-13=25'
2006
2,287
750
18" (� inlet grate overflow (invest 7 50 I-MSI )
Sand Newhann & I i ipp / 30 0 in,hks pet horn
2 0 I-MSL
1 0 hour
3

Statc Slotmwatcj Management S)stuns
Permit No SW8 980434MOD
DIVISION OI'
PRO IEC 1
Ilioleet Name
I'umit Numbu
I ovation
Applicant
Mailing Address
Application Date
Name of Rceervmg '-III Will / Indc,x 4
Classification of Water Body
If Class SA, chloride sampling tcu lts
Dcsrgn Stone
Infiltration Basin Depth, feet
Bottom Flcvation, I-MSI
Dramage Atca acres
1 olal Impervious Sur tacks, it'
011site Atca entering Basin, ft'
Basin Diniemaons I \ W x 11, ft
Ruluncd Storage VOIUm(,, ft'
Provided Storage Volume W
I op of Sloragc Clevation, I MY
I ypc of Sorl
Lxpccted Infilhatton Ratc
Seasonal high Wale. IAIC
I imc, to Draw Down
WA I FR QUALI I Y
DAIASIILEI
Row Boat Row Subdivision, Dramagc Basin #2
SW8 980434MOD
Brunswick County
Mt Kenneth A Kukman Attotncy m I act
Bald head Island LrnutCd
PO Box 3069
Bald 1 lead Island NC 28461
Apt tl6 2000
Cape I cat Rive / 18-(87 5)
"SA"
n/a
1 5"
1 00
900
091
13 939
none per Lngtnecr
250' x 5 0' x 1 0' (bottom dimension',)
1,816
2 000
1000
Sand Newhdnn R I upp
20 0 niches pet hour
2 0 I-MSL
I 0 hour
9

State Stoi mwatei Management Systems
PumitNo SW8980434MOD
DIVISION OR WAI ER QUALI I V
PRO U"C 1 DATA S11I F 1
Piolcu Name
Row Boat Row Subdivision, Drainage Basin#3
Peimit Numbei
SW8 980434MOD
Location
Bumswi(,k Count%
Applicant
Mi Kenneth A Kukman Attoinc% in Fact
Mailing Addicss
Bald I lead Island Limited
PO I3o\ 3069
Bald I lead Island NC 28461
Application Dat(,
April 6 2000
Name of Receiving Sticam / Indcx #
Cape I car Rivet / 18-(87 5)
Classification of Watei Body
"SA"
If Class SA chlondc sampling icsults
n/a
Design Stonn
1 5"
Infiltiatlon Basin Depth feet
1 00
Bottom 1-ovation, FMSI
700
Diamage Aica, aucs
070
1 otal Impci VIOus Sui facts, ih
13,939
Of kite Aica Cntumg Basin, It
none, pci Lngmeu
Basin Dimensions, I x W x 11, It
240' x 5 0' x 10' (bottom dmnensiom)
Requnud StoiagC Volume ft'
1,759
Piovided StoiagC V01umc It'
1 920
I op orStoiage hlcvaUon FMSI
800
1 ype of Soil
Sand Newhann & hi ipp
I \pected Infiltiation Rat(,
20 0 m(,hcs pci hour
Seasonal I Iigh Wate I able
2 0 FMSI
I nnc to Di aw Down
1 0 hour
5

Statc Stoi mwatei Management Systenn
Peimit No SW8 980434MOD
DIVISION OF WATER QUALI I V
PRO IECT DATA SIIFF 1
Piolect Name
Row Boat Row Subdivision Drainage Basin 44
Pcimrt Numbu
SW8 980434MOD
I ocation
Brunswick County
Applicant
Mi Kenneth A Kukman Attoincy m fact
Mailing Addiess
Bald I Ieac1 Island I imit(,d
PO Box 3069
Bald Head Island, NC 28461
Application Date
April 6 2000
Name of Receiving SUcam / IndCx #
Cape Feat River / 18-(87 5)
ClassIlication of Watu Bod)
"SA"
11 Class SA, chloride sampling results
]I/,I
DcSIgn Storin
1 5"
InhlUatum Basin Depth feet
1 00
Bottom I levation, I'MSI
750
Dminagc Aiea aces
065
I otal Impuvious Sul faces ft,
9 583
Olfsite AILd entumg Basin, it'
none, pet I nginccl
Bw,in Dimensions, L x W x 11, It
160' x 5 0' x 1 0' (bottom dimensions)
RequuCd StoIagc Volume ft'
1 255
Provided Storage Volume ft'
1 280
1 op of Storage I lLVahOn, I"MSl
850
1)pe of Soil
Sand Newhann & Tripp
I \pcCtcd In11111d11On Rdtc
20 0 inches per how
Seasonal I IIgh Watt. I iblL
2 0 FMSI
I ime to Draw Down
1 0 hour
6

State Stotmwater Managemuit Systems
Permit No SW8980434MOD
11 SCIIFDULF OF COMPLIANCL
No hOmLOvv'net/lot ownci/developct shall fill in altei, of pipe any diamagc featnte (such as swalcs)
shown on the approved plans as pat t ofthc stoi mwateI Ina nagcinent systun without submitting a t LVISIOn
to the peuntt and reLervmg approval fiom the Division
2 1 he pu nnttce is i esponsible foi veu fymg that the pt oposed built -upon ai ca does not eacced the allowable
built -upon area OnCC the lot ltanslet Is complete thL built -upon aiLa may not be icvised mthout
approval hom the Division of WatCI Quality, and iesponsibilrty fot mcLttng the built -upon nea limit is
tianstuied to the individual ptopetty ownu
3 I he lollowmg items will Icqune a modification to the pei nit
a Any ievision to lhC approved plans icgardless of stiL
b PIoILLI name change
L I i ansfci of owner ship
d Redesign of addition to the approved amount of built -upon aica
c 1 In filet subdivision of thepiolect area
I filling in aItuing of piping of any vegetative c,onvcyancc, shown on the tpptoved plan
4 1 he Dn ectoi may delci nine that othct Icvtstons to the ptolCct should Iequue a modtftcation to the pei not
5 1 he Du ectot may notify the per mntcc when the per nutted site does not meet one of mot C of the minimum
icquucmcnts of the pcunit Within the time hamc specified in the notice the pumittce shall submit a
mitten time schedule to the Dueetor lot modtf)mg the site to meet minimum Icquuuncnts IhC
pu m rltc c shall pt ovidc topics of revised plans and Lct n fication in wt tong to the Du cctot that the changes
have bLCII made
6 1 he stonnwatci managenu,nt system shall be Lonstiucted in it's CntitLly vegetated and opuattonal lot
its intended use prtoi to the eonstruUton of any built -upon sw face c\cept roads
7 During constiucuon etoston shall be Lcpt to a minimum and any cioded areas of the system will be
ILpauLd Immediately
8 1 he pcinutux giants pumtsston to DCNR Staff to cntu the piopcity for the purposes of Inspecting the
ploleLt for compliance with the Conditions of this peinit
9 Upon ComplCttom Ofconstt action, pt iot to issuance of Cctttficatc of Occupancy, and plot to opuation
of this pci nrtted facility a cciblication must be Icccrvcd fiom an appropriate dcstgnct lot the system
Installed Citifying that the punuttcd facility has been installCd In aCLotdanee with thn punul, thL
approved plans and spcuttcaltons and other supporting documciriatron My deviations fiom the
approved plans and spcuftCations must be nolLd on thL Cutifieation
10 DLCOrdtJVL spray lountams will not be allowLCl in the ,toimwatcr ttcatmuit syslLm
11 11 the ,tormwatLI system was used as an I roston Control devrcc it must be testotcd to dcstgn Condition
pi lot to opciatton as a slonnwatu neatmcnt dcvlcL, and plot to oLutpancy of thL IaulIty
12 Pnol to transfer of owncishtp, the system must be inspCUcd by DWQ personnel, and determined to bL
In compliance with all pcinnt conditions Recoids of mamtcnancc activities will be required
7

State Stoi nhwalet Management Systuns
PCImit No SW8980434MOD
13 I he pci nuttec shall at all IImCA pi ovidc the opu atton and maintenance ncccssai y to asxm c the pet milted
stormknateis)stern functionsatOptimum elficicncy IhcappiovedOpciationand Maintenance Plan Must
bC follo"Ld in its entirety and maintenance must occur at the schcdulcd intervals including but not
Imutcd to
a Sumannual schcdulcd inspections (evciy 6 months)
b Sediment Iemoval
c Mowing and ieveget won of side slopcs
d Immediate ICpan ofeioded aicas
e MdlnlenduLc of vde ,lope- in accordance with approved plans and spccilications
f Debus iemoval and unclogging of outlet sUuctute onfrce device and catch basins and piping
g Access to the outlet suuctme must be availablC at all limes
14 Rccoids of maintenance actMuCe must be kept and made, available upon ICqucst to authorvcd pu sonnet
of DWQ Hie tecoids will indicate the date, activity, name of person per foinung the work and what
actions werC taken
15 Pr ror to the sale of any lot deed iestrictions must be hecotdcd which limit the built -upon aiea pu lot to
the amount as shown on the Pi elect Data Shect per Section I Pait 2 1 he Iecor(led statcmcnts must
follow the form
a "I he mavumun built -upon died per lot rs, sec Lvhibit A I his allotted amount includes anv built -
upon aica constiuctcd within the lot property boundaucs, and that portion of the tight -of -way
between the front lot hnc and the edge of the pavement Built upon area includes but Is not
lunrtcd to stn elutes asphalt, eoncrc L, gravCl, back stone, slate, and coquina but does not
Include r msed, open wood decking, of the water sut face of swimming pools "
b "The covenants pertunmg to stonnwater Icgulattons may not be changed of deleted without
Concuh knee of the State "
c "Altuation of the dtamage as shown on the approved plan may not take place without the
concur Ience of the State "
d "I ots within CAMA's Atea of Lnvuonmental Concern may be urbcct to a rcductron in then
allowable built -upon area due to CAMA regulations "
e "All nmoffon the lot must chain Into the permitted systems I his may be accomplrshcd through
ptovtdtng roof dram guttus which dlatn to the stiect grading the lot to di on toward the street
oh gtadtng pu anon swalcs and duceimg them Into the pond of sUcet Lots that nalutally drain
Into the system arc not re(uucd to provide thcsC mcasuics
16 A Copy of the ICcorded dccd ICstt iUtons must be submitted to the Drvi aon within 30 d rys of the date of
recotdrng the plat and pttot to selling lots I he recorded Cop) must beat the srgmdtute ofthC PCrnnttee
the dCLd book number and page and stamp/srgnatute of the Regtstet of Dec&
17 1 his puma shall become voidable unless the facilities dIC COuStIULted In accordance with the Conditions
Of this permit the apptovcd plans and speufiCauons, and other suppotthng data
18 A Copy of the approved plans and speafrLtrons shall be matntamcd on file by the PCImIttLC lot a
muhnnum Often yedrs fiom the date of the Completion of consU uctton
R

State ';tot rnwater Management Systems
Permit No SW8 980434MOD
III GRNF RAI, CONDI 1 IONS
I his pemit is not tiansfctablc in the cvutt thciLis a dcsuc lot the idulItICs to change ownuship of
thcie is a name, change of the PCII111ttcL, a "Name/Owneiship Change horn" must be submitle.d to the
Division of Watu Quality accompanied by apptopuate documentation from the panics involved such
as a copy of the deed of LtuSL Other supporting mates ials, such as a signed Operation and Maintenance
plan in the case of engineered s)stcros will also be icquncd I he ptolect must be in good standing with
DWQ I he approval of this tequcst will be consideied on its mciits and mad or may not be approved
I ailuie to abide by the conditions and limitations contained In this punt may subu,t the PCimlltCC to
eniotcement action by the, Division of Watci Quality, in aecotdanec with Noith Carolina Gu7ual Statute
143-215 6A to 143-215 6C
I he issuance of this punt does not preclude the PCIIII it LL fiom complying with any and all statutes
rules regulations or oidinances which may be imposed b) othu govunment agencies (local state and
lederal) which have lunsdtcthon
In the event that the faulities fail to pet form satisfactonly including the ueation ofnuisancC conditions
the Per puttee shall tale immediate cos rec,tivc action, including those as may be i cquned by this Division
such as the conslructton ofadditional or icpla(,uncnt stonnwatu management systurns
Hie permit may be modified ievokcd and rcissucd of ternunatcd tot cause 1 he filing of a request for
a peuntt modification icvoeatron and ]Cissuanee of teunmation does not stay an) pcinnt condition
Pcimittee grants pet mission to staff of lhc, DWQ to access the propet tv lot the purposes of ntspccting the
stonnwater facilities dining normal butitn(AS horns
I he pet nnttce shall notify the Division of any mailing addtcss changes within 30 days
Pu mit issued this the 8th day of Novembc.i, 2000
NOR I I I CAROI INA 1 NVIRONMEN I AI MANAGI-MI N I COMMISSION
AA, A
✓I o Ken `l Stevens, Duector
Division of Water Quality
By Authority of the 1 nvuonmental Man rgunurl Conunrssron
Pet nut Numhu SW8 980434MOD

OFFICE USE ONLY
tal z D -n
= J(.
x- . 9 /J S23 1116D
t
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I GENERAL INFORMATION
1 Applicant's name (specify the name of the corporation, individual, etc who owns the project)
Bald Head Island Limited
2 Print Owner/Signing Official s name and title (person legally responsible for facility and
compliance)
Kenneth M Kirkman Attorney in Fact
3 Mailing Address for person listed in item 2 above
P O Box 3069
City Bald Head Island State NC Zip 28461
Telephone Number [phone]
4 Project Name (subdivision, facility, or establishment name -should be consistent with project name
on plans, specifications, letters, operation and maintenance agreements etc )
Row Boat Row Subdivision
5 Location of Project (street address)
Row Boat Row
City
Bald Head Island
6 Directions to project (from nearest major intersection)
Take the ferry from Indueo Plantation Marina located in
County Brunswick
NC
G,
7 Latitude 33052 25Longitude 78000 10"
8 Contact person who can answer questions about the project
Name Ken Stewart Telephone Number
I1 PERMIT INFORMATION
1 Specify whether project is (check one)
New
Renewal
U
of project
1457-7326
X Modification
Form SWU 101 Version 3 99 Pagel of 4

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
Existing permit number SW8 980434 Modification And its issue date (if known) April 7, 2000
3 Specify the type of project (check one)
Low Density X High Density Redevelop General Permit Other
4 Additional Project Requirements (check applicable blanks)
X CAMA Major X Sedimentation/Erosion Control 404/401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623 6748
III PROJECT INFORMATION
1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative
(one to two pages) describing stormwater management for the project
This project implements stormwater control systems for a high density development consisting of infiltration swales
_and underground infiltration trenches The swales and trenches will be located in recorded drainage easements
2 Stormwater runoff from this project drams to the Cape Fear
3 Total Project Area 49 acres 4 Project Built Upon Area
5 How many drainage basins does the project have? 6
River basin
28 8 %
6 Complete the following information for each drainage area If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Bald Head Island Marina
Cape Fear River
Receiving Stream Class
SC
SA
Drainage Area
1 15 acres
0 91 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
0 55 acres
0 32 acres
% Impervious* Area total
47 8%
35 2%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On site Buildings
0 37 acres
0 23 acres
On -site Streets
0 14 acres
0 07 acres
On -site Parking
0
0
On -site Sidewalks
0 03 acres
0 02 acres
Other on -site
0 01 acres(Amenity Area
0
Off site
0
0
Total 0 55 acres
Total 0 32 acres
* Impervious area is defined as the built upon area including but not limited to buildings toads parking areas
suleivalks gravel areas etc
Form SWU 101 Version 3 99 Page 2 of 4

6 Complete the following information for each drainage basin If there are more than two drainage basins in the project,
attach an additional sheet with the information for each basin provided in the same format as below
Basin Information
Drainage Basin 3
Drainage Basin 4
Receiving Stream Name
Cape Fear River
Cape Fear River
Receiving Stream Class
SA
SA
Drainage Basin Area
0 70 acres
0 65 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
0 32 acres
0 22 acres
% Impervious* Area total
45 7 %
33 8 %
Impervious* Surface Area
Drainage Basin 3
Drainage Basin 4
On site Buildings
0 23 acres
0 17 acres
On site Streets
0 07 acres
0 04 acres
On site Parking
0
0
On site Sidewalks
0 02 acres
0 01 acres
Other on -site
0
0
Off site
0
0
Total
0 32 acres
E= 0 22 acres
Basin Information
Drainage Basin 5
Drainage Basin 6
Receiving Stream Name
Cape Fear River
Cape Fear River
Receiving Stream Class
SA
SC
Drainage Basin Area
122 acres
0 27 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
0
0
% Impervious* Area total
0
0
Impervious* Surface Area
Drainage Basin 5
Drainage Basin 6
On site Buildings
0
0
On -site Streets
0
0
On site Parking
0
0
On -site Sidewalks
0
0
Other on site
0
0
Off site
0
0
Total
E= 0
E= 0

7 How was the off -site impervious area listed above derrved9 No offsite area
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment
1 The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
SW8 980434 as issued by the Division of Water Quality These covenants may not be
changed or deleted without the consent of the State
2 No more than _** square feet of any lot shall be covered by structures or impervious materials
Impervious materials include asphalt gravel concrete brick stone slate or similar material but do not include wood
decking or the water surface ofswimming pools
3 Swales shall not be filled in piped or altered except as necessary to provide driveway crossings
4 Built upon area in excess area of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runofffrom outparcels or future development shall be directed into the permuted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permuted
* *See attached Exhibit A
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land , that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot
V SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU 106
Off -Site System Supplement
Form SWU 107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of

VI SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ)
A complete package includes all of the items listed below The complete application package should be
submitted to the appropriate DWQ Regional Office
Please indicate that you have provided the following required information by initialing in the space provided
next to each item
Initials
• Original and one copy of the Stormwater Management Permit Application Form S�
• One copy of the applicable Supplement Form(s) for each BMP 34P
• Permit application processing fee of $420 (payable to NCDENR) �6P
• Detailed narrative description of stormwater treatment /management 3�C�
• Two copies of plans and specifications, including S�3P
-Development/Project name
-Engmeer and firm
-Legend
-North Arrow
-Scale
-Revision number & date
-Mean high water line
-Dimensioned property / project boundary
-Location map with named streets or NCSR numbers
-Original contours, proposed contours, spot elevations, finished floor elevations
-Details of roads, drainage features, collection systems, and stormwater control measures
-Wetlands delineated, or a note on plans that none exist
-Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
-Drainage areas delineated
-Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate submittal authority to another individual or firm so that they may provide information on your
behalf, please complete this section
Designated agent (individual or firm) Cape Fear Engineering
Mailing Address 5040 New Centre Drive, Suite D
City Wilmington State
Phone [phone] Fax [phone]
VIII APPLICANT'S CERTIFICATION
Zip 28403
I, (print or type name ofperson listed in General Information item 2) Kenneth M Kirkman, Atty inFact
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H 1000 ,
Signature
Date q/I
Form SWU 101 Version 3 99 Page 4 of 4

DO-11B/T A
TABLE OF LOT S/ZES AND BU/L T UPON AREAS
FOR ROW BOAT ROW5U522/1//5/0N
BALD HEAD /SLAM/?
LOT #
LOT AREA (ACRE)
ALLOWABLE BUILT UPON AREA (SO FT )
200
0 12
2500
202
0 14
2500
204
014
2500
20G
010
2500
207
011
2500
208
0 10
2500
209
0 II
2500
210
0 II
2500
211
0 II
2500
212
012
2500
213
011
2500
214
0 12
2500
215
0 11
2500
216
0 13
2500
217
011
2500
218
014
2500
219
015
1000
220
0 17
2500
common area
0 14
500
TOTAL 44,000
Cape Fear Engineering
Revised 09/15/00
File lot sizes and built upon areas doc

Permit No SGJF i10 y3H 1hvo
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details
I PROJECT INFORMATION
Project Name
Contact Person
Row Boat Row Subdivision
Ken Stewart
Phone Number [phone]
For projects with multiple infiltration systems, a supplement form must be completed for each system This
worksheet applies to Trench IT-1 in Drainage Area #1 (SC waters)
(from plans) (from Form SWU-101)
II DESIGN INFOMATION (attach supporting calculations/documentation)
Sods Report Summary (based upon an actual field investigation and soil borings)
Soil Type
Infiltration Rate
SHWT Elevation
Trench Design Parameters
Newhan&Fnpp
30
Z
i>7Ft or cMulsf (circle appropriate units)
finsl (Seasonal High Water Table elevation)
Design Volume
184
c f
Design Storm
10
inch event (1 5 inch event for SA waters I inch event for others)
Drawdown Time
002
days
Perforated Pipe Size
�O--inch
diameter
Perforated Pipe Length
37 5
11
No Observation Wells
o
(may be required on a case by case basis)
Stone Type (if used)
N/A
Stone Void Ratio
N/A
Trench Elevations (in feet mean
sea level)
Bottom Elevation
40
fmsl
Storage/Overflow Elevation
7 5
fins]
Trench Dimensions
Height
Width
FomSWU 107 Rev 399
25
ft
ft
Page I of 4
Length 375 ft
Volume Provided 184 cu ft

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N C
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section
15
A NCAC 2H 1008
Initial in the space provided to indicate that the following design requirements have been met and
supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management
Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
�32 a System is located 50 feet from class SA waters and 30 feet from other surface waters
7SSS (' b System is located at least 100 feet from water supply wells
­Z� 7?� c Bottom of system is at least 2 feet above the seasonal high water table
d Bottom of the system is 3 feet above any bedrock or impervious soil horizon
STSP e Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided)
S1P f System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required)
_t\3Q g Soils have a minimum hydraulic conductivity of 0 52 inches per hour
h System is not sited on or in fill material or DWQ approval has been obtained
S13 P 1 Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
S� P I System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage
S TICS k System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
313P I System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters)
I3P m Drainage area for the device is less than 5 acres
Q n A pretreatment device (filter strip, grassed swale, sediment trap, etc) is provided
QP o Trench bottom is covered with a layer of clean sand to an average depth of 4 inches
373P p Sides of the infiltration trench are lined with geotextile fabric
q Rock used is free of fines (washed stone) and has a large void ratio
S Q�' r Side to bottom area ratio is less than 4 1
Form S W U 107 Rev 3 99 Page 2 of 4

s Observation well(s) are provided (case -by -case basis)
t *Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other
waters)and detail is shown on plans
SQ uA benchmark for checking sediment accumulation is provided
yc
T� 5E,r PR.SE[-r /vARR AT1 1-6-
IV UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE
AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition
Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance
Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth Restore
depth to original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed
The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately
If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced
to 75% of the original design depth The system shall be restored to the original design depth without over -
excavating Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i e
stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the infiltration system The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the depth at the benchmark reads 4 625 msl , the accumulated sediment shall be
removed from the system
Form SWU 107 Rev 3 99 Page 3 of 4

ME
I acknowledge and agree by my signature below that I am responsible maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above I agree to notify
of any problems with the system or prior to any changes to the system or responsible party
Print Name and Title Kenneth M Kirkman, Attorney in Fact
Address
Phone
Signature
P O Box 3067, Bald Head Island, NC 28461
[phone]
Date
Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president
I — ,a Notary Public for the State of Y14*) la ny✓<. %4- County of I
r do hereby certify that Kenn a1 h m . �, r 12 rn n %j personally appeared before me this �&
day of �,�.�,, a0 0 0 and acknowledge the due execution of the foregoing infiltration basm maintenance
requirements Witness my hand and official seal,
Gik�"
OFFICIALSEAL
Notary Public Nwth Caiobns
COUNTY OF BRUNSWICK
B.J. OORMAN
MY Commission Expltes
SEAL
My commission expires 3kD
Form SWU 107 Rev 3 99 Page 4 of 4

Permit No Sw8 � �o�3yrrloa
(to be provtdcd by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details
PROJECT INFORMATION
Project Name
Contact Person
Row Boat Row Subdivision
Ken Stewart
Phone Number [phone]
For projects with multiple infiltration systems, a supplement form must be completed for each system This
worksheet applies to Trench IT-2, 1T-3, IT-6 thru IT-13 in Drainage Area #1 (SC waters)
(from plans) (from Form SWU-101)
II DESIGN INFOMATION (attach supporting calculations/documentation)
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type Newhan&Fnpp
Infiltration Rate 30 © or cf/hr/sf (circle appropriate units)
SHWT Elevation 20 fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume 154 c f
Design Storm 10 inch event (1 5 inch event for SA waters I inch event for others)
Drawdown Time 0 02 days
Perforated Pipe Sizeinchdiameter
Perforated Pipe Length 31 5 ft
No Observation Wells 0 (may be required on a case by case basis)
Stone Type (if used) N/A
Stone Void Ratio N/A
Trench Elevations (in feet mean sea level)
Bottom Elevation 40 fmsl
Storage/Overflow Elevation 7 5 fmsl
Trench Dimensions
Height 25 ft Length 31 5 $
Width 25 ft Volume Provided 154 cu ft
Forth SWU 107 Rev 3 99 Page 1 of 4

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N C
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section
15
A NCAC 2H 1008
Initial in the space provided to indicate that the following design requirements have been met and
supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management
Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
P a System is located 50 feet from class SA waters and 30 feet from other surface waters
-TB O b System is located at least 100 feet from water supply wells
c Bottom of system is at least 2 feet above the seasonal high water table
SQP d Bottom of the system is 3 feet above any bedrock or impervious soil honzon
SCi P e Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided)
P f System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required)
SC3 P g Soils have a minimum hydraulic conductivity of 0 52 inches per hour
S 6I' h System is not sited on or in fill material or DWQ approval has been obtained
j T3 P i Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
S�3P j
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage
SC33P k
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
QP 1
System captures and infiltrates the runoff from the first 1 0 inch of rainfall (1 5 inch event
for areas draining to SA waters)
�C3P in
Drainage area for the device is less than 5 acres
—SQL
A pretreatment device (filter strip, grassed Swale, sediment trap, etc ) is provided
n
D P o
Trench bottom is covered with a layer of clean sand to an average depth of 4 inches
-YP p Sides of the infiltration trench are lined with geotextile fabric
TVtp q Rock used is free of fines (washed stone) and has a large void ratio
Sl3P r Side to bottom area ratio is less than 4 1
Forth SWU 107 Rev 3 99 Page 2 of 4

3 s Observation well(s) are provided (case -by -case basis)
J QP t *-Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other
_ waters)and detail is shown on plans
u A benchmark for checking sediment accumulation is provided
SEE v-itc3Ecr /1�RaaA'rivE
IV UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE
AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance
3 Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth Restore
depth to original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed
4 The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month
Chronic high water table elevations (within I foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately
5 If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
6 Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced
to 75% of the original design depth The system shall be restored to the original design depth without over -
excavating Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i e
stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the infiltration system The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the depth at the benchmark reads 4 625 msl , the accumulated sediment shall be
removed from the system
Form SWU 107 Rev 3 99 Page 3 of 4

DWQ
I acknowledge and agree by my signature below that I am responsible maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above I agree to notify
of any problems with the system or prior to any changes to the system or responsible party
Print Name and Title Kenneth M Kirkman, Attorney in Fact
Address
Phone
Signature
P O Box 3067, Bald Head Island, NC 28461
[phone]
Date 9,
Note The legally responsible parry should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president
I, t ,a Notary Public for the State of '7?OA
tAn.4e+n� County of�me
do hereby certify that 94LQ ' A C-7 A M , PXM An personally appeared Q'^
day of a0 O 6 and acknowledge the due execution of the foregoing infiltration basin maintenance
requirements Witness my hand and official seal,
^ O
AL
Notary Public NeM Carol'
W
COUNTY OF BRUNSWICK
`— B.J GORMAN
My Commisslon Expiia9
SEAL My commission expires
Form SWU 107 Rev 3 99 Page 4 of 4

Permit No Jiff 5XO113y /i7010
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
Thu form may be photocopied for use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details
I PROJECT INFORMATION
Project Name
Contact Person
Row Boat Row Subdivision
Ken Stewart
Phone Number [phone]
For projects with multiple infiltration systems, a supplement form must be completed for each system This
worksheet applies to Trench IT-4, IT-5 in Drainage Area #1 (SC waters)
(from plans) (from Form SWU-101)
II DESIGN INFOMATION (attach supporting calculations/documentation)
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type
Newhan&Fripp
Infiltration Rate
30
m or cf/hr/sf (circle appropriate units)
SHWT Elevation
20
fins] (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume
189
c f
Design Storm
10
inch event (1 5 inch event for SA waters 1 inch event for others)
Drawdown Time
002
days
Perforated Pipe Size
fit—
inch diameter
Perforated Pipe Length
38 5
ft
No Observation Wells
0
(may be required on a case by case basis)
Stone Type (if used)
N/A
Stone Void Ratio
N/A
Trench Elevations (in feet mean
sea level)
Bottom Elevation
40
fmsl
Storage/Overflow Elevation
75
fmsl
Trench Dimensions
Height
2 5
ft Length 38 5 ft
Width
25
ft Volume Provided 189 cu ft
Form SWU 107 Rev 3 99
Page I
of 4

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N C
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section
15
A NCAC 2H 1008
Initial in the space provided to indicate that the following design requirements have been met and
supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management
Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
J6P
a System is located 50 feet from class SA waters and 30 feet from other surface waters
3\3P b System is located at least 100 feet from water supply wells
c Bottom of system is at least 2 feet above the seasonal high water table
QP d Bottom of the system is 3 feet above any bedrock or impervious soil horizon
7S5 3 P e Off -]me system, runoff in excess of the design volume bypasses the system (bypass detail
provided)
f System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required)
ti N3 p g Soils have a minimum hydraulic conductivity of 0 52 inches per hour
S1 E' h System is not sited on or in fill material or DWQ approval has been obtained
=`3 i Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
STSP I System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage
QP k System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
SBA 1 System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters)
SQ P in Drainage area for the device is less than 5 acres
3Q1? n A pretreatment device (filter strip, grassed swale, sediment trap, etc ) is provided
_AMP o Trench bottom is covered with a layer of clean sand to an average depth of 4 inches
S SP p Sides of the infiltration trench are lined with geotextile fabric
-SS9 q Rock used is free of fines (washed stone) and has a large void ratio
SQP r Side to bottom area ratio is less than 4 1
Form SWU 107 Rev 3 99 Page 2 of 4

�p s Observation well(s) are provided (case -by -case basis)
5I3P t A('degetated filter 1s provided for overflow (50 feet for SA waters, 30 feet for other
waters)and detail is shown on plans
u A benchmark for checking sediment accumulation is provided
.SoF PRosecr IV' kAR.ari✓E
IV UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE
AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition
Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance
Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth Restore
depth to original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed
4 The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately
If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced
to 75% of the original design depth The system shall be restored to the original design depth without over -
excavating Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i e
stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the infiltration system The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the depth at the benchmark reads 4 625 ms1_, the accumulated sediment shall be
removed from the system
Form SWU 107 Rev 3 99 Page 3 of 4

DWQ
I acknowledge and agree by my signature below that I am responsible maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above I agree to notify
of any problems with the system or prior to any changes to the system or responsible party
Print Name and Title Kenneth M Kirkman, Attorney in Fact
Address
Phone
Signature
P O Box 3067 Bald Head Island, NC 28461
[phone]
Date
Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president
I _ ,a Notary Public for the State of 7 [.:piLOxt. County of
do hereby certify that Ken A aTA / , e" r ..r n A personally appeared before me this/sAl-
day of oZ O O 0 ,and acknowledge the due execution of the foregoing infiltration basin maintenance
requirements Witness my hand and official seal,
0 OFFrlAL SEAL
Notary PubIc North Cerdlna
COUT't NOF 8RUNSNflCK
B J GORMAN
My Gpmmtlyg 0n ExP485
SEAL
My commission expires 311410
Form 8 W U 107 Rev 3 99 Page 4 of 4

Permit No go �3y
(to be provided by DWQJ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stonmwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No SW-2 in Drainage Area #2(SA waters)
(as identified on plans) (from Form SWU 101)
II DESIGN INFOMATION — Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil bonngs County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (frisl)
Soils Report Summary
Soil Type Newhan&Fripp
Infiltration Rate 30 m or cf/hr/sf (circle appropriate units)
SHWT Elevation 20 fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
15
inch
1816
c f
003
days
250
ft x 50
2000
c f
90
fmsl
100
fmsl
100
fmsl
(1 5 inch event for SA waters I inch event for others)
ft — 1250 sq ft (bottom dimensions)
Form SWU 103 Rev 3 99 Page I of 3

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowing design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
-SUP a System is located 50 feet from class SA waters and 30 feet from other surface waters
_333P b System is located at least 100 feet from water supply wells
VIP c Bottom of system is at least 2 feet above the seasonal high water table
-SQP d Bottom of the system is 3 feet above any bedrock of impervious soil horizon
SQP e System is not sited on or in fill material or DWQ approval has been obtained
s�3P f System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
—SQP g Drainage area for the device is less than 5 acres
Ji3 P h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
Q P i
System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
'S�3P
System is sized to take into account the runoff at the ultimate built -out potential from all
I
surfaces draining to the system, including any off -site drainage Calculations attached
"SQP k
All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
S QP 1
A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
SC3P in
Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
J 13 P n Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
"S(3P o Flow distribution mechanism within the basin provided
-S\IP p A benchmark is provided to determine the sediment accumulation in the pretreatment device
-7:s"Q(' q *tRunoff in excess of the design volume bypasses off-line systems (bypass detail provided)
SIIlF r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
_aP
i Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
((� �
SES 1—RoSKr /✓�iR kATi✓t
Form SWU 103 Rev 3 99 Page 2 of 3

IV INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measunng device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads _0 25_ feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party
Print Name and Title Kenneth M
Address
Phone 1
Signature
P O Box 3069, Bald Head Island, NC 28461
10) 457-
in Fact
Date
Note The legally responsible party s'houTd not be a homeowners association unless more than 50% of the lots have been sold and a
resident o the subdivisdion has been named the president /1
a Notary Public for the State of ��M 49w101s.., , County of
K] do hereby certify that ke nn cY is m , KZ r K m O N personally appeared before me this
day of y iand and .,,_ woe and acknowledge the due ecution of the foregoing infiltration basin maintenance requirements
Witness rn hand and official seal
OfflCi4l SEAL /
SEAL Notary Puhlic Norm CaroP�O 3 /O 0 3
exirm of enuNswicx My commision expires
�_.� B J GORMAN
My Commfasion Enplres
Form SWU 103 Rev 3 99 Page 3 of 3

Permit No 50r'! 5%4
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No SW-3 in Drainage Area #3(SA waters)
(as identified on plans) (from Form SWU-101)
Il DESIGN INFOMATION —Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil bonngs County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (fmsl)
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Newhan&Fnpp
30
20
© or cf/hr/sf (circle appropriate units)
fmsl (Seasonal High Water Table elevation)
15
inch
1759
c f
003
days
240
ft x 50
1920
c f
70
fins]
80
fmsl
80
fmsl
(1 S inch event for SA waters I inch event for others)
ft = 1200 sq ft (bottom dimensions)
Form SWU 103 Rev 3 99 Page I of 3

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowing design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
SBP a System is located 50 feet from class SA waters and 30 feet from other surface waters
b System is located at least 100 feet from water supply wells
gP c Bottom of system is at least 2 feet above the seasonal high water table
-SQF d Bottom of the system is 3 feet above any bedrock of impervious soil horizon
-SC3P e System is not sited on or in fill material or DWQ approval has been obtained
SQP f System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
-TSP g Drainage area for the device is less than 5 acres
SQ P h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
—S l3 P 1 System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
j System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage Calculations attached
_:MP k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
S C3P 1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
in Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
n.VLVegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
Sy3'F o
Flow distribution mechanism within the basin provided
-S,�Sp p A benchmark is provided to determine the sediment accumulation in the pretreatment device
q*Runoff in excess of the design volume bypasses off-line systems (bypass detail provided)
r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
�(3(' s Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
l!�� �
Form S WU 103 Rev 3 99 Page 2 of 3

IV INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads _0 25_ feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party
Print Name and Title Kenneth M Kirkman Attorney in Fact
Address
Phone I
P O Box 3069, Bald Head Island, NC 28461
1 Ol 457-
Date
Signature Z--� I
Note The legally re o ible parry s ould not be a homeowners association unless more than 50% of the lots have been sold and a
iesident of the subdivisdion has been named the president
I �0 ,y.� Q.► a Notary Public for the State of `" &� County of
R AMON do hereby certify that ,Q e n eT�f M K. t-"A" RA/ personally appeared before me this
day of A000 ,and acknowledge the due execuho of the going infiltranon basin maintenance requirements
Witness /J
OFFtCIALS�EAI 17,j/'J�
' Notary PuMlin
ie NerM Caroms
COUNTv OF t�tiUNSWiCK
SEAL
B J GOFiMAN My commision expires /G D 11
My Commission Expires
Form SWU 103 Rev 3 99 Page 3 of 3

PermitNo 5hT g T&(3yme0
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
Thu form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No SW-4 in Drainage Area #4(SA waters)
(as identified on plans) (from Form SWU-101)
II DESIGN INFOMATION — Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil borings County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (fmsl)
Soils Report Summary
Soil Type Newhan&Fripp
Infiltration Rate 30 ® or ef/hr/sf (circic appropriate units)
SHWT Elevation 20 finsl (Seasonal Molt Water Table elevation)
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
15
inch
1255
c f
003
days
160
ftx 50
1280
c f
75
fmsl
8 5
fmsl
8 5
fins]
(1 5 inch event for SA waters I inch eventfor others)
$ = 800 sq ft (bottom dimensions)
Form SWU 103 Rev 3 99 Page I of 3

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowmg design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
7YUP a System is located 50 feet from class SA waters and 30 feet from other surface waters
SQP b System is located at least 100 feet from water supply wells
SP c Bottom of system is at least 2 feet above the seasonal high water table
-SW?
d Bottom of the system is 3 feet above any bedrock of impervious soil horizon
�SC3P e System is not sited on or in fill material or DWQ approval has been obtained
SQP f System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
"-SC3P g Drainage area for the device is less than 5 acres
1Q P h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
3 Q P 1 System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
ARP I System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage Calculations attached
SQP k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
5 6P 1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
in Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
5 Q P n Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
"S(3P o Flow distribution mechanism within the basin provided
Slap p A benchmark is provided to determine the sediment accumulation in the pretreatment device
oaf' q*Runoff in excess of the design volume bypasses off-line systems (bypass detail provided)
r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
-$Q(' s Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized(
Sfg nRo$�T /vgRaATI✓r<
Form SWU 103 Rev 3 99 Page 2 of 3

IV INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads _0 25_ feet inthe pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or pnor to any
changes to the system or responsible party
Print Name and Title Kenneth M Kirkman, Attorney in Fact
Address P O Box 3069 Bald Head Island, NC 28461
Phone [phone] Date
Signature 7
Note The legally response e party s! o ild not be a homeowners association unless more than 50% of the lots have been sold and a
Q resident of the subdivisdion has been named the president
I, 8 QlJiMIOn._ a Notary Public for the State of`�t� w , County of C
do hereby certify that 4nno.'Fh ;� , i r U.",Nn personally appeared before me this, $'
day of 66 ,and acknowledge the due execution of the regoing infiltration basin maintenance requirements
WitnessAN
s Yes
Q
liC NOdh Gsrotn0� BRUNMCKSEALN My commision ex
GOFlMA
ires �I
Form SWU 103 Rev 3 99 Page 3 of 3

N
a
Row Boat Row Subdivision
Stormwater Permit No SW8 980434MOD
Bnmswick County
Designer's Certification
State Stormwater Management Systems
Permit No SW8980434MOD
Page 1 of 2
1,_✓ % �PN6✓ D /�cA1EE ,asaduly registered 4,✓'4 E, R in
the State of North Carolina, having been authorized to observe (penodically/weekly/full rime) the construction
of the project,
w
for LOAM HEAD Lsr. FerZ, LI�I rE D (Project Owner) hereby state that, to the best of my abilities, due
care and diligence was used inthe observation ofthe project construction such that the construction was observed
to be built within substantial compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form are a part of this Certification
Noted deviations from approved plans and specifications
T.vFILTnArror TQE✓cH T-r-1. W4r E&IMI✓AT,TO DIIE To SPAc£ 60,✓rra4r✓rs To
RE G.FI✓ rar✓cm Ao£Ar TT -a, Wir L£N4wCMED 6 Peer AND TT-S .4ND 1'T--L
WfttE 13orm LENATYr�eo 7 Frer. ALL S.v%arM.4r1o. TaC ✓cHEr wrRE A—ro
L3.✓cirH0-Nit) l s FEET To , Acca-N ct 4rc T Hi PIPE nt Bo T. PERMITTED
%RE.✓cN Di^ rvxicvr 144✓e tUFE�, MET ✓IrH 7-were 446o,F-tc.4n*�-r. RoLLED
LI/R[ t.✓G U/RS UrEO, TNEndFone No 6✓a0 CVrS W;ffir i4/C6DED jCV1310-6
�TSPe?uJ '5 a-5i/YNTIAt, bonl%77TLw1f�N�(> 6/iTb f •e+`+�/ // Mb3S� }1,9 rFrb
S SEAL
Signature /yr7 ��—
u
Registration Number 63 if Q�r
FESS/
Date �QO
SEAL
d�pE FE�rr. E�117/NQ.srL LNG N 025634
-a
lnn �NGINEEi

State Stormwater Management Systems
Permit No SW8980434MOD
Certification Requirements Page 2 of 2
✓ 1 The drainage area to the ✓2� g system contains approximately the permitted acreage
2 The drainage area to the system contains no more than the permitted amount of built -upon area
✓ f�" 3 All the built -upon area associated with the project is graded such that the runoff drams to the system
N i_4
The outlet/bypass structure elevations are per the approved plan / b piS4/-,j4Lko,�
tl�5
The outlet structure is located per the approved plans tql Dl X y r
tLI,L6
Trash rack is provided on the outlet/bypass structure
'15" 7
All slopes are grassed with permanent vegetation &7,0&k ^J
✓LA:L8
Vegetated slopes are no steeper than 3 1
'./S^'X9
The inlets are located per the approved plans and do not cause short-circuiting of the system
V, f 10
The permitted amounts of surface area and/or volume have been provided
GSM 1 I
Required drawdown devices are correctly sized per the approved plans
�S^ `12
All required design depths are provided
H IA 13
All required parts of the system are provided, such as a vegetated shelf, a forebay, and the vegetated filter
4-n 14 The overall dimensions of the system, as shown on the approved plans, are provided
cc NCDENR-DWQ Regional Office
Delaney Aycock, Brunswick County Building Inspector
Ke,✓ ST Ew,*nTr rS H i

�o CAPE FEAR
Engineering, Inc
5040 New Centre Din Suae D 250 North Chumh St
WAmegton N C 28403 Spartanburg SC 20 M
TEL (910)T908584 TEL (884J 598 8801
FAX [phone] FAX [phone]
www cape(eareng coin
Transmittal
To NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405
ATTENTION Linda Lewis
DATE 10/2/00
PROJECT No 300-07
RE Row Boat Row
Bald Head Island
SW8 980434 Mod
Quantity
Drawing No
Description
2
Stormwater Plans
2
Original and Copy of Permit Application
2
Design Report and Calcs
2
Soils Report w/ Attached Plan
1
Original Supplement Forms (SWU-107 SWU 103)
1
Power of Attorney Document
1
$420 Application Fee
REMARKS If you have any questions please contact this office
cc File
Bruce Marek
Signed
CAPE FEAR Engineering Inc
L \Admin\Std Forms\cfe-trans doc

CAPE FEAR
Engineering, Inc.
October 2, 2000
Ms Linda Lewis
NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405
RE Soil Borings and On -site Soils Investigations
Row Boat Row
Bald Head Island, Brunswick County, NC
Dear Ms Lewis,
�ECE'11E
OCT 022= D
PROD # �W=—
The Row Boat Row Subdivision is located on the boat basin/manna of Bald Head Island
The soil types encountered in this investigation are excessively well drained and can be
expected to have infiltration rates in excess of 30 inches per hour The Seasonal Mean
High Water Table will reach a maximum elevation of 2 0 This data was obtained
through numerous bonngs and test wells as seen on the attached plan
If you have any other questions, please contact this office
Sincerely,
Davis, P E
5040 New Centre Or 5wte D • Wilmington NC 25403 • TEL [phone] FAX [phone]
250 North Chuch 5treet 5partanburg 5C 29306 • TEL [phone] • FAX [phone]

CAPE FEAR
Engineering, Inc.
October 2, 2000
Ms Linda Lewis
NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405
RE Row Boat Row Mo S=Mod
Dear Ms Lewis,
OCT 0 2 2000
proo
1 V14e,
In response to your letter dated September 21, 2000, the following information is
provided
• The original infiltration trench and basin supplement forms are included, however it
was our understanding that we provide copies based on Section VI -Submittal
Requirements of the permit application, which states "one copy of the applicable
Supplement Form(s) for each BMP"
• Earlier this year, NCDENR staff Scott Vinson and Vincent Lewis augered and
observed Seasonal High Water Table with CFE representatives The results of this
testing and observation support 2 0 MSL for Seasonal High Water Table A revised
soils report is included
I hope this information is sufficient to process the Stormwater Management Permit
application If you have any other questions, please contact this office
Sincerely,
Jeffrey Petrof , Ef I
5040 New Centre Or 5wte O • Wilmington NC 26403 • TEL [phone] FAX [phone]
250 North Chuch Street • 5partanburg 5C 29300 TEL [phone] FAX [phone]

DESIGN REPORT
POR
ROW BOAT ROW SUBDIVISION
PREPARED FOR
BALD HEAD ISLAND LIMITED
Revised September 15, 2000
BY
CAPE FEAR ENGINEERING, INC
5040 New Centre Drive Suite D
WILMINGTON NC 28403
[phone]
SEAL
025634
Cape Fear Engineering
09/18/00
Project Narrative_Ht_density doc

PROJECT NARRATIVE
General
Due to modification5 made during construction 5tormwater Management Permit
#SW8 980434 Row Boat Row 15 being resubmitted The placement of the
underground infiltration system was changed resulting in a hicJher capacity The
three infiltration 5wale5 were not modified This Submittal will reflect these
changes
Storm Water Management
The total area of Row Boat Row Subdivision 15 approximately 4 9 acres The
proposed impervious built upon area would be 1 4 1 acres corre5pondmg to an
impervious ratio of 28 8% This project would be considered a high -density
project with deed re5triction5 limiting the amount of built upon area per lot in
accordance with the schedule shown in Exhibit A The existing 50115 are Newhan t-
Fripp fine sands These 50115 are extremely well drained with an infiltration rate of
approximately 30 mche5 / hour Storm water runoff will be conveyed to
infiltration ba5m5 and underground infiltration trenches u5mg 5heetflow The
5tormwater control systems will be located in recorded dramage easements No
impervious surfaces will be allowed in the 5tormwater control area
The following ju5tification for design pursuant to Section III "Required Items
Checklist Form 5WU-103 Rev 3 99 15 noted below
Item n ) Due to the extremely high infiltration rate of the Newhan 4 Pripp
sands the 25-year design storm event would be contained within the infiltration
ba51n shown on the plans (See attached calculations) Since the Soil
characteri5tic5 of the entire area outside the infiltration basin con5i5t5 of the
same highly permeable sands an overflow vegetated filter does not appear to be
warranted
Item q ) Due to the extremely high infiltration rate of the Newhan * Fripp
sands the 25-year design storm event would be contained within the infiltration
ba5m shown on the plans Since the soil characteri5tic5 of the entire area outside
the infiltration ba5m con515t5 of the same highly permeable sands, a bypass for
off-line systems does not appear to be warranted In the unlikely event that the
infiltration basin nears capacity the overflow volume would 5heetflow to adjacent
permeable sands This 15 preferred in lieu of concentrating runoff in a by-pass
system
Cape Fear Engineering
09/18/00
Project Narrahve_Hi_density doc

The following ju5tification for design pursuant to Section III, "Recluired Items
Checkh5t" Form 5WU-107 Rev 3 99 15 noted below
Item t ) The design storm event would be contained within the underground
infiltration trench a5 shown on the plans (See attached calculations) Since the
Soil characteri5tic5 of the entire area outside the infiltration trench con5i5t5 of
highly permeable 5and5 an overflow vegetated filter does not appear to be
warranted
Sedimentation * Erosion Control
This project will disturb 1 7 acres of land Silt fencing and vegetative 5wale5 will
be the primary controls for Sedimentation and erosion control The velocities in
the 5wale5 are Ie55 than I-ft/5ec and will not be erosive All areas that will be
disturbed will be grassed or paved according to the schedules on the drawings
Bald Head Island Limited will be the financially responsible party for all land
d15turbm6j activities
Cape Fear Engmeenng
09/18/00
Project Narrative_Hi_densrty doc

INFILTRATION TRENCH
Design Calculations for Row Boat Row
Bald Head Island NC
CAPE FEAR
�r% Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
FaX [phone]d
E mad cte6pbe//south net
BASIN DATA
Onsite Impervious Area =
Offsite Area =
Offsite Impervious Area =
Using the runoff volume calculations per "Simple Method" as
Pro/ No 300-07
09/18/2000
infiltration —basin As
1
acres
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Impervious portion of the drainage area (acres) / Drainage area (acres)
Rv = 0 05 + 0 009(I)
Rv = 0 05 + 0 009 ' 478 = 0 480 (in/in)
Volume to be controlled from the design storm event
where Design rainfall = 1 (in)
Rv = 0 480 (in/in)
Drainage Area = 1 15 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feethnches) x 43560 (sf/acre)
Vreq d = 1 ' 0 480 ' 1 15 ' 1/12 ' 43560 = 2005 cubic feet
Vprov = ( 13 Trenches) = 2107 cubic feet
1Vreq d = 2005 cf < 2107 cf Vprov 11
Determine drawdown time
Compare infiltration system drawdown time to maximum drawdown period of 5 days
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands) = 30 Whir
A = bottom area of Swale = = 1649 sf
Qavail = IA = 30 Whir 1649 sf ' 1 fU12 ' 1 hr/3600sec = 1 15 cfs
T = V req / Q avail 1 hr/ 3600 sec
T = 2005 cf / 1 15 cfs = 0 49 hours
(OK- system draws down in less than 5 days)

PIPESTOR
IUM-111MAXICIM:• ,
Infiltration Rate Q
Drainage area (Ac)=
1 15
Pipe size (ft) =
25
Storm event =
25
Trench width (ft) =
25
Length of pipe and trench=
4295
Pipe area (ft2) =
49
Trench side height (ft) =
25
Stone area (ft2) =
00
A = Area of exFlltrat(on =
1849 ft2
Stone voids 40% (ft2) =
00
K = Coeff of permeability =
2 1E-02 cm/sec
Available storage per ft =
49
1= Hydraulic gradient =
1 00
Total Available Storage
2107
Q/ =
1 15 cfs
Q/ =
449 g d/ft2
TIME
(min)
ACCUMULATED
MASS INFLOW
(wbic feet)
EXFILTRATION
VOLUME
(cubic feet)
STORAGE
REQUIREMENTS
cubic feet)
AVAILABLE
STORAGE
(cubic feet)
STORAGE SURPLUS
(DEFICIT)
(cubic feet
5
1088
344
744
2107
1363
10
1898
687
1211
2107
896
15
2 532
1 031
1 502
2 107
606
20
30,46
1 374
1 672
2 107
435
25
3 474
1 718
1 756
2 107
351
30
3 838
2061
1 777
2 107
331
40
4 429
2 748
1 680
2 107
427
60
5 274
4 123
1 151
2 107
956
80
5 868
5 497
371
2 107
1 736
100
6 320
6 871
(551)
2 107
2 659
120
6 682
8 245
(1 563)
2 107
3 670
180
7 467
12 368
(4 901)
2 107
7 008
240
8 007
16 490
(8 483)
2 107
10 591
360
8 753
24 735
(15 982)
2 107
18 090
720
10 019
49 471
(39 452)
2 107
41 559
1 440
11 322
98 942
(87 620)
2 107
89 727
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
01
01
0
0
0
INSY 1 As
09/18/2000

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row
Bald Head Island NC
CAPE FEAR
', Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone],1
E mad cte(dbellsouth net
BASIN DATA
Prot No 300-07
09/18/2000
300_07infiltration_basin2_REV2700 xis
1 of4
Drainage ea Designation
Swale Designation
DRAINAGE AREA 2
SW-2
Receiving stream class
SA waters
Onsite Area =
09 acres
Onsite Impervious Area =
acres
Offsite Area =
acresOffsite
WO
Impervious Area =
acres
Total Area = 0 91 acres
Total Impervious Area = 0 32 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 352
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method' as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Impervious portion of the drainage area (acres) / Drainage area (acres)
Rv = 0 05 + 0 009(I)
Rv = 0 05 + 0 009 ' 352 = 0 366 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
= 1 5 (in)
= 0 366 (in/in)
0 91 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feethnches) x 43560 (sf/acre)
Vreq d = 1 5 ' 0 366 ' 0 91 . 1112 ' 43560 = 1816 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
CAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mad cte(qpbellcouth net
Determine the volume of the proposed Swale
SWALE DATA
Cross -sectional Area (A) = bd +HdA2
= 8 00 sf
bottom width (b)
= 5 0
ft
depth (d)
= 1
ft
sideslope (H V)
= 3
1
length of swale (L)
= 250
ft
EASEMENT - WIDTH AS INDICATED
Prol No 300-07
09/18/2000
300_07infiltration_basin2_REV2700 As
2of4
INLILTRATI❑N SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (so x length of swale (ft)
Vprop = 8 sf 250 ft =
volume proposed to volume required from the design storm event
2000 cubic feet
2000 cf > Vreq d = 1816 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 09/18/2000
Bald Head Island NC 300_07infiltration_basin2_REV2700 AS
3of4
FCAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mad cfe(q�bellsouth net
B) Check swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA ] / Sum[A]
Description
AREA
C CA
Impervios Area
0 32
0195
0 304
Pervious Area
059
0 5
0 089
Sum A =
091
Sum CA = 0 393
C ave = 0 393 /
091
= 0 431
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Q regd = 0 43 ' 0 33 ' 0 91 = 0 13 cfs
where I = intensity for 25 year-24 hour storm event from Chart E-6 = 3 in/hr
A = drainage area = = 0 91 acres
Cave = weighted coefficient of runoff = 043
Check available rate of infiltration provided by proposed swale
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands) = 30 in/hr
A = bottom area of swale = 5 0 ft ' 250 ft = 1250 sf
Qavail = IA = 30 in/hr ' 1250 sf ' 1 ft/12 in ' 1 hr/3600sec = 0 87 cfs
rate of infiltration with runoff rate from the 25 year storm event
0 87 cfs > Q reqd = 0 13 cfs
(OK -No Discharge for 25 yr-24 hr storm event)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island NC
CAPE FEAR
' r Engfneerfng, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mail cte(Nbellsouth net
Prot No 300-07
09/18/2000
300_07infiltration_basin2_REV2700 As
4of4
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = 6 3 in/hr
A = drainage area = = 0 91 acres
Cave = weighted coefficient of runoff = 043
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q10-yr= 043' 63 ' 091 = 247cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10 yr ' 10 min duration ' 60 sec/min = 1484 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 2000 cf
Compare design volume of infiltration Swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 2000 cfs > V 10-yr = 1484 cfs
(OK Swale has adequate capacity for 10-yr event without flushing)
Compare infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1816 cf / 0 87 cfs 1 hr/ 3600 sec = 0 58 hours
(OK- system draws down in less than 5 days)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row
Bald Head Island NC
CAPE FEAR
Engmeerfng, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mall cfeCdbellsouth net
BASIN DATA
Prol No 300-07
09/18/2000
300_07infiltration_basin3_REV2700 As
1 of4
Drainage ea ©esignahon
DRAT GE READ#3
S a e Oe igna ion
S_ -
Receiving stream class
SA waters
Onsite Area =
0170 acres
Onsite Impervious Area =
032 acres
Offsite Area =
00 acres
Offsite Impervious Area =
00 acres
Total Area = 0 70 acres
Total Impervious Area = 0 32 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 457
A) Determine volume to be controlled from storm 11 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per Simple Method as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Impervious portion of the drainage area (acres) / Drainage area (acres)
Rv=005+0009(I)
Rv = 0 05 + 0 009 ' 457 = 0 461 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
1 5 (m)
= 0 461 (in/in)
= 0 70 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feettinches) x 43560 (sf/acre)
Vreq'd = 1 5 ' 0 461 ' 0 7 ' 1/12 ` 43560 = 1759 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row
Bald Head Island NC
FCAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mad cfe(dbellsouth net
Determine the volume of the proposed swale
SWALE DATA
Cross -sectional Area (A) = bd +HdA2
= 8 00 sf
bottom width (b)
= 0
ft
depth (d)
=
ft
sideslope (H V)
= 3
1
length of swale (L)
= 2 D
ft
EASEMENT - WIDTH AS INDICATED
Prot No 300-07
09/18/2000
300_07infiltration_basin3_REV2700 xls
2of4
INEILTRATI❑N SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (so x length of swale (ft)
Vprop = 8 sf 240 It = 1920 cubic feet
Compare volume proposed to volume required from the design storm event
1920 cf > Vreq d = 1759 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 09/18/2000
Bald Head Island, NC 300_07infiltration_basin3_REV2700 As
3of4
4WCAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 2840.3
Voice [phone]
Fax [phone],3
E mail cre(aPbellsouth net
B) Check swale infiltration rate for capacity to control the 25 year 24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA I / Sum[A)
Description
AREA
C CA
Impervios Area
032
Or95
0 304
Pervious Area
038
0 i
0 057
Sum A=
07
Sum CA = 0361
Cave = 0361 I
07
= 0516
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Qreqd= 052' 033 * 07
where I = intensity for 25 year-24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed Swale
where I = infiltration rate of soil (Sod Type = Newhan & Fripp sands)
A = bottom area of swale = 5 0 ft ' 240 ft
Qavail = IA = 30 in/hr ' 1200 sf ' 1 fU12 in ' 1 hr/3600sec
rate of infiltration with runoff rate from the 25 year storm event
0 83 cfs > Q reqd = 0 12 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
0 12 cfs
= 33 in/hr
0 7 acres
052
30 in/hr
= 1200 sf
= 0 83 cfs

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row 09/18/2000300_07infiltration_basin3_REV2700 As
Bald Head Island NC 4of4
FCAPE FEAR
Engfneerfng, Inc
5040 New Centre Drive Suite D
Wilmington N C 2840d
Voice [phone]
Fax [phone]
E mall cfe(a_�belleouth net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = 6 in/hr
A = drainage area = = 0 7 acres
Cave = weighted coefficient of runoff = 052
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q10-yr= 052' 63 ' 07 = 227cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10 yr ' 10 min duration ' 60 sec/min = 1365 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 1920 cf
Compare design volume of infiltration Swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 1920 cfs > V 10 yr = 1365 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
Compare infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1759 cf / 0 83 cfs 1 hr/ 3600 sec = 0 59 hours
(OK- system draws down in less than 5 days)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row
Bald Head Island, NC
CAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
VOICe [phone]
Fax [phone]
E mail cte(cDbellsouth net
BASIN DATA
Prot No 300-07
09/18/2000
300_07infiltration_basin4_REV2700 As
1 of4
Drainage Area Designation DRAINAGE AR #4
Swale Designation SW-4
Receiving stream class S;4 waters
Onsite Area = 0165 acres
Onsite Impervious Area = 0 22 acres
Offsite Area = 0 00 acres
Offsite Impervious Area = 0 00 acres
Total Area = 0 65 acres
Total Impervious Area = 0 22 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 338
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Impervious portion of the drainage area (acres) / Drainage area (acres)
Rv=005+0009(I)
Rv = 0 05 + 0 009 ' 338 = 0 355 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
= 1 5 (in)
= 0 355 (in/in)
= 0 65 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feethnches) x 43560 (sf/acre)
Vreq d = 1 5 ' 0 355 ' 0 65 ' 1 /12 ' 43560 = 1255 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island NC
FCAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mail cfe(g>belkouth net
Determine the volume of the proposed Swale
SWALE DATA
Cross sectional Area (A) = bd +HdA2
= 8 00 sf
bottom width (b)
= 0 ft
depth (d)
= ft
sideslope (H V)
= 3 1
length of swale (L)
= 1 0 ft
EASEMENT - WIDTH AS INDICATED
Prot No 300-07
09/18/2000
300_07infiltration_basin4_REV2700 As
2of4
INEILTRATINN SWALE
NOT TO SCALE
Volume proposed (cf) = Cross sectional area (sf) x length of swale (ft)
Vprop = 8 sf 160 ft = 1280 cubic feet
volume proposed to volume required from the design storm event
1280 cf > Vreq'd = 1255 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row 09/18/2000
Bald Head Island NC 300_07infiltration_basin4_REV2700 As
3of4
FCAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mail cfe(dbelkouth net
B) Check swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA ] / Sum[A]
Description
AREA
C CA
Impervios Area
0 22
0195 0209
Pervious Area
043
15 0 065
Sum A =
065
Sum CA = 0 274
C ave = 0 274 /
065
= 0 421
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Q regd = 0 42 ' 0 33 ' 0 65
where I = intensity for 25 year 24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed Swale
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands)
A = bottom area of swale = 5 0 ft ` 160 ft
Qavail = IA = 30 in/hr 800 sf ' 1 ft/12 in ' 1 hr/3600sec
rate of infiltration with runoff rate from the 25 year storm event
0 56 cfs > Q reqd = 0 09 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
= 0 09 cfs
= 0 33 in/hr
= 0 65 acres
042
0 56 cfs

INFILTRATION SWALE - Schueler Method Prol No 300-07
Design Calculations for Row Boat Row 09/18/2000
Bald Head Island, NC 300_07infiltration_basin4_REV2700 As
4of4
CAPE FEAR
Engineering, Inc
5040 New Centre Drive Suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E mail cte(dbel/south net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E 6 = 3 in/hr
A = drainage area = = 0 65 acres
Cave = weighted coefficient of runoff = 042
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q 10-yr = 042 ` 63 ` 065 = 1 72 cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ` 10 min duration ` 60 sec/min = 1034 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 1280 cf
Compare design volume of Infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 1280 cfs > V 10 yr = 1034 cfs
(OK swale has adequate capacity for 10-yr event without flushing)
Compare infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1255 cf I 0 56 cfs 1 hr/ 3600 sec = 0 63 hours
(OK- system draws down in less than 5 days)

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 09/18/2000
Bald Head Island, NC 300_07infiltration_basin4_REV2700 As
4of4
CAPE FEAR
Engineering, Inc.
5040 New Centre Drive, Suite D
Wilmington, N C 28403
Voice [phone]
Fax [phone]
E-mail cfe(Lpbellsouth net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = 6. in/hr
A = drainage area = = 0 65 acres
Cave = weighted coefficient of runoff = 042
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q 10-yr = 042 " 63 " 065 = 1 72 cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ' 10 min duration ' 60 sec/min = 1034 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 1280 cf
Compare design volume of infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 1280 cfs > V 10-yr = 1034 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
Compare Infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1255 cf / 0 56 cfs 1 hr/ 3600 sec = 0 63 hours
(OK- system draws down in less than 5 days)

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B Hunt, Jr, Governor
Bill Holman, Secretary
Division of Water Quality
August 23, 2000,
CERTIFIED MAIL N7000 0600 0023 4230 1206
RETURN RECEIPT REQUESTED
Mr Kenneth Kirkman, Attorney
Bald Head Island Limited
PO Boa 3069
Bald Head Island, NC 28461
Dear Mr Kirkman
�` �
NCDENR
NORTH CAROUNA DEPARTMENT OF
ENVIRONMENT AND NATURAi. RE50URCE
Subject REQUEST FOR STORMWATER MANAGEMENT
PERMIT APPLICATION
Row Boat Row Subdivision
Stormwater Project No SW8980434
Brunswick County
On August 18, 2000, the Wilmington Regional Office was notified that there has been a modification to the
approved permit for Row Boat Row Subdivision The North Carolina Administrative Code requires any project that
changes any portion of the approved plans must apply for and receive a modification to the Stormwater Management
Permit by the Division of Water Quality
Either a Stormwater Permit Application Package including 2 sets of plans, completed application form, fee,
and supporting documentation, or a written response regarding the status of this project and the expected submittal date
must be received in this Office no later than September 23, 2000 Failure to respond to this request may result in the
initiation of enforcement action, and construction may experience a subsequent delay
Please reference the Project Number above on all correspondence If you have any questions, please call me at (910)-
395-3900
Sincerely,
Scott Vinson
Environmental Engineer
RSS/sav S \WQS\STORMWAT\STORMSUB\980434 AUG
cc Delaney Aycock, Brunswick County Inspections
Perry Davis/Stephen McAree, Cape Fear Engineering, Inc
ilmmgton-RegionaL(Dffice
Central Files
127 Cardinal Dr Ext, Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
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CAPE FEAR [RECETMVIFEngineerIng, Inc.
/ 5040NewCenbeDr" SvileD 250NoMChurohSl AUG 1 8 [U00
Wilmington N C 26403 Spartanburg SC 28308
TEL (910) 780-B584 TEL [phone]
FAX (910) ]SO B583 FA% (864) 50 8802 B V
www capefeareng com 11
To NCDENR-Div Of Water Quality
127 Cardinal Dr Ext
Wilmington, NC 28405
ATTENTION
smittal
DATE 8/15/00
PROJECT NO 300-07
RE Row Boat Row Subdivision
Stormwater Certification
Proi No SW8 980434MOD
Quantity
Drawing No
Description
1
Copy of Row Boat Row Subdivision Stormwater Certification
heeMMikki
Wed. C&
se
REMARKS Please find the enclosed certification If you have any questions or comments regarding this
protect, please contact this office at 790-8584
cc File CAPE FEAR Engineering, Inc
Signed��
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