SW8941203_HISTORICAL FILE_19950110 (2)

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 q4 12 0 S
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
HISTORICAL FILE
El COMPLIANCE EVALUATION INSPECTION
DOC DATE
lqqs oi to
YYYYMMDD

66C
State ol-Nordi Carollua
Department of Enviroi iment, Heall h, and Natural Resources
\N7il,jIjIj�q0[I ItCoo,a] ()I]iCe
James 13. Huntjr., Governoi DIVISION OF ENVIR0NMr11;TAL MANAGEMENT Bobjainicsoil
jonalliall B. Holvcs, senctal), WAITR QIJAIXrY SE(—rION Regional MaIlagel
jairlun, 10, 1995
Mr. Robert 13. Mcf-Iciny, R.L.S., Agent
Harbour Development Coiporation & ficmicr Wrighl"Ir., Ine.
Post Office Box,133
Long Beach, North Carolina 28,165
Silliject: MaIFICATION 017COMPLI-AINCE
%Nidi Storinwatcr Regula(ions
StorniNvater Pro , ject No. SW8 9,11203
St.,jairics by (lie Sea Subdivision wid Beach Club
l3ninswick County
Dew. Mr. McHenry:
This cci-tilication is pursuant to the application for St.,janics by (lie Sca Subdivision and Beach Club received
on December 5, 1994, Nvidi additional information received oji Dcceinbcr 27, 1994. Stad- rcNiew of die
project plans and specifica6ons bas determined that (lie storillmder con(rol sys(eill as proposed for St.jarrics
1)), the Sea SLIbdiN'iSi0II and Beach Club %kill comply with the Slorrinvater Rc&iila6oils set fordi in Tide 15A
NCAC 21-1.1003(i). The runolf floin 127,631 square fcc( of' impenious arca �611 be treated in a detention
pond sized 10 achieve 90% leduction in Total Suspended Solids. E.ach of' the 22 lots in the subdivision is
restricted to,1,000 square fect of-built-Liponarca.
Any inodificaiion ofthe plaris submiltul to and approved 1)), this Office or liti-dwr development ofdris site
rej;ardless of tl)C fact, that (Ile modifica(ion may be less fliaii I acre, xNrill require an additional S(orniwatcr
StAbirrittal/modificalion and approval prior to iniliati011 01' C011SIRICti011. Modifications include but are not
limited to; project riaine chailges, (rajaslcr of omiership, redesign ofbuilt�iipon surfaces, addition of' built -upon
surfaces, redesign or furi-licr sid)(IMsion ot'die project arca.
Tbis ccl(ificalion shall lie elfec&e from the (late of issuaitce iin6l rescinded. The protiect shall be
constructed and maJn(ained III accordwice widi die plans arld specifica(ions approvcd by die Wilmington
Regional Oflice. This Ccr6fic;16011 does not supersede, any oflier perinit or approval. The developer is
responsible for obt;6ning any and all I)cniiiLs mid approvals necessai), for die developrucrit ofdris project.
This could include (lie Division of' Coastal Management under CAMA rcquirements, die Division of
F.rivironinental Maiiagement under NAIctlarid 401 WIWI- Quality Certification arid/or a Diedge mid Fill Perinit
alid/or ;I Sewer Extensioll/collecticiii Perinit, U.S. Anny Coij)s ofElliiincers 404 Wellarid Pcrinit, NPIDES
Stommatcr Pc-rinit if'disturbing five acres or more, local County or Town 4,cIIcy pcinvis under dicir local
ordinanccs, or others that may be i-cquired.
127 C,�Iina) I)ri,,c Emension, Wiffimigion, N.C. 28405-384,55 - 'I'deplume910-395�3900 - K�x 910-350-200�j
An Equal Cppomimty Aflinmdw Amon I'niploycr

Mr. McHenry
January 10, 1995
Storinwatcr hqjcci No. S\A78 9,11203
A professional cii�6nccr must. cerfily dmi le storinwatcr sysicin has been installcd in accordance iiitl)
the approved plans and specificadons upon mriple6on of conmrucmon. 'rfic attached ccrtification should be
icccived by this Office Kdrin 30 (lays ofcompletion ofconsirtiction.
The detention pond must be constructed in it's entirely, operational 1,01. it's intended Ilse, and
perillanclilly VCgetaled prior to the construc(ion of'�uiy impervious surfaces proposed as a part of' die project,
except mads.
If you Imvc any (Rwsmons concerning this maRcr, please call Awls. QuIa Umis or rric at (91M 3950900.
Sincemly,
Dave Adkins
Water Quali(y Supel-6501-
DA/.,U,I:S:\\VQS\,S'I'OIIN,f\�7A'I'\CrR'1'11,"IC\9,11203JAN
cc: Jay Housloll, P.E.
Delaney Aycock, Brunswick County Inspections
Bradley Beillielt
IMAM&
Willilinglon Rc6riollal Office
Central Fifes

DWISION OFENVIRONMENTAI, MANAGEMENT
PROJECT DATA
Pro,jcct Name: St..1;uncs by (lie Sca SubdMsion wid Beach Club
Proliect Numbu: SW8 941203
bw-ation: Brunswick Coun(y
Applicant: Mr. Roberl B. McIlemy, Agent
MAiiigAddrcss: Harbour Development Coiporation &, Floiner Wngh(jr., Inc.
Post 011-ice Box,133
Long Beach, North Carolina 28465
SUbMilGil F)MC: December 5,1994
N�7;ItCj- Body Rccciving Stormwater Runoff- DiMs Ciulal
classificaijoil 01AVa(er Body: ?SCIT
It' Class SA, chloride s�unplingrcsulls: N/A
Pond Depth: 4.5 1'ect
Penmulent Pool I'llevafion: 5.5 MSI,
Twit Impervious Surfaces Allowed: 127,631 squuc I'vet
Olf�itc, Area ente6ng Pond: 0 Square feet
Green Area entering Pond: 112,096 squai-e fecl
Required Sinfiacc Area: 10,036 squuc lect
Provided Surface Arca: 11,200 square feet
Required Storage Volume: 12,000 cubic 1'ect
Pro6ded Siorage Volume: 12,000 cubic 1'ect
'I , cmpormy Storage Flevation: 6.5 MSL
Controlling OrificeType/Dimider: 1.75" pipc

WET DErEN'riON POND EVALUATION
I.Yes No The design storage is lot- dic rulloll, fi-oill all impenrious surfaces resulting fi-oln 1-inch of'
rainlall aiid is locatcd above die permanent pool.
2.Yes No The perillailent pool is desipled for 90% total suspended solid CBS) removal. Therelbic, no
vegc(alive 1-11(cl, is I C(lI lired.
3.Yes No T] le ruI loll, col 1) pletcly draws dowl 1 to d ic pen nanct ii. pool i n 5 days, h it n ot less If jal 1 2 days.
,l.Ycs No Tbc nicaii depth ohlic pennanent pool is a mininium of'3 feet.
5.Ycs No The ill1cl SwIlclurcisdesigiled toiliiiliilliZCtlll-l)lliClICC,111(1 S1101-t CilCLlitiIIg.
6.Yes No Ali approlmiate operation and maintenance plau has been provided for die systelll.
7.Yes No THIS PRQjE'Cl' MEETS THF, STORM\VATFR CONTROL REQUIREMENTS OF
15A NCAC 2H.1003 (g), (i), (k), and (1) (For Yes, I through 7 must all be highlighted Yes)
Blicl'rxplailatioll: Tl lis detell ljol 1 poil (I i's desigi led to I cillove 90% total SLISIM Id Cd solids %%j d 101 It d IC aide Of'
a vegetative 1,11(cr.
DIVISION OF ENVIRONMEN'rAi. MANAGEME.N'r SIGN -OFF
Wilmingion Rc&nal Office
Date Individual 1"wallia6lig Fol-III/plalls
Date Regional Water Quality Supervisor
cc: Applicaut/Bradley I lei inct t1ai-V\Vi ROXF
St.jallics by the Sea Subdivision alid Beach Club
Brunswick Couno,
Stommater ProJect No. S\A78 941203

E ngincei's Ccmiricaficin
11 --------------------- — ----------- as a (Itily r%istcl-cd Professional Flil&�Iiccr in tile State of
Noi 11) Carolina, having been authorized io observe (I)CI-ioilic;dl),/Xlleckl)VI'tilI time) die construction of die
project,
(I'l.qject)
1,01 - ------------------------- — ----- — (ProJect Owner) hereby state diat, (o die best 01 Illy abilities,
dile Cale aild diligence was used in die observation of the pro i ject consiniction stich Iliat die construcholl was
Ob9CITC(I tO bC btlikWidlill SUbStaillial COIIII)li;LIICC alld il)(Clit Ofthe approved plails aild SI)CCifications.
Siplatilre
Reostration Number
Date

DETENTION POND ANALYSIS
FILE NAME: S:\WQS\POND\941203.WK1
PROJECT #: 941203 REVIEWER:ARL
PROJECT NAME: ST JAMES BY THE SEA & CLUBHOUSE DATE: 09—Jan-95
Drainage Basin: DAVIS CANAL ClassificationSC Chlorides: N/A
Site Area 271750 square feet
Drainage Area 239580 square feet
Area in Acres 5.5 acres
IMPERVIOUS AREA
Runoff Coefficient
Buildings 61173 1 Adjusted SA 61173
Concrete 31644 0.95 Adjusted SA 30061.8
Asphalt 34667 0.95 Adjusted SA 32933.65
TOTAL 1 2�� square feet TOTAL 124168.4
% IMPERVIOUS F7777-9� Pond Depth: 4.5 TSS: 90
SURFACE AREA CALCULATION
SA/DA 4.189%
Req. SA 10036.08J squarefeet
Prov. SA
.112001 square feet
VOLUME CALCULATION
Req. Volume 12215.6375 cubic feet
Prov. Volume -....12f 00i. cubic feet
........ ....
ORIFICE CALCULATION
Flowrate 02 0.07002314 Area
Flowrate Q5 0.02800925 Area
Engineer uses 1.751nches
[From plan Contours]
[From plan Contours]
2.961590 Diameter 2
1. 184636 Diameter 5
COMMENTS
VOLUME IS DEFICIENT, BUT WITHIN 5%. DIFFERENCE IS DUE TO ENGINEER APPLYING
UNIFORM RUNOFF COEFFICIENT OF.95 TO ALL IMPERVIOUS AREAS.

HOUSTON and ASSOCIATES, P.A.
Consulting Engineers
SHALLOTTE, NORrH CAROLINA 28459
Telephone [phone]
Facsimile [phone]
171 �7"1177
L �;� _ , �:
DEC Z 7 W4
...................
Ms. Linda Lewis
Division of Environmental Management
North Carolina Department of Environment,
Health, and Natural Resources
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
4918 Main Street
Post Office Box 2927
Thursday, December 22, 1994
Subject: St. James by the Sea & St. James Beach Club
Revised Stormwater Plan Submittal
Dear Ms. Lewis:
Hill
DEC 2 7 1994
The subject stormwater plan has been revised to be in conformance
with your letter to us dated December 7, 1994. Specifically, all runoff from
built -upon areas is now being directed through the storrowater pond, rather
than a portion of the runoff being diverted "around" the stormwater pond.
The proposed storm drains labeled SD-1 on the original plans have been
eliminated, and the other proposed storm drains have been relabeled.
As a result of this revised approach, the design peak (QIO) flowrate
reaching the existing parallel 18-inch culverts (C-A) under 71st Street has
been significantly reduced. This means that the culverts do not have to be
replaced with 24-inch culverts. To account for the higher peak flowrates
now entering the stormwater pond, however, culverts relabeled as SD-1 and
SD-2 have been increased in number and size. Further, as a result of
Increasing the size of SD-2, an "interceptor" junction box has to be
constructed at the intersection of SD-2 and C-13.
Three copies of the revised plans, revised calculations, and Operation
and Maintenance plan are enclosed for your review. Due to the changes in
hydrologic and hydraulic characteristics of the project, we are also sending
two copies of the revised plans and calculations to Mr. Dan Sams, P.E.

Ms. Linda Lewis Page 2 St. James by the Sea
December 22, 1994 Revised SW Plan
Your attention to this matter is appreciated. Should you require any
additional information, or have any comments, please contact our office.
Sincerely,
Houston. P.E.
)n and Associates, P.A.
JRH/dmc
Enclosures
pe: Mr. John Atkinson, St. James Plantation
Mr. Robert B. McHenry, Sr., Harbor Development Corp.
Mr. Dan Sams, P.E., NCDEHNR
File; 93-0781Y (St. James by the Sea)
92-078IR (St. James Beach Club)