SW8921115_HISTORICAL FILE_19930331

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 1%5
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
March 31, 1993
DIVISION OF ENVIRONMENTAL MANAGEMENT
Mr. Dick Thompson
B & D Development
Post Office Box 777
Carolina Beach, North Carolina 28428
Dear Mr. Thompson:
Bob Jamieson
Regional Manager
Subject: CERTIFICATION OF COMPLIANCE
with Stormwater Regulations
Stormwater Project No. 921115
Crosswinds South
New Hanover County
This Certification is pursuant to the application for Crosswinds South received on November 30,
1992, with additional information received on March 31, 1993. Based on our review of the project plans
and specifications, we have determined that the Crosswinds South stormwater control system complies
with the Stormwater Regulations set forth in Title 15A NCAC 2H.1003(i). The runoff will be treated
in a detention pond sized to achieve 85 % reduction in Total Suspended Solids.
Any modification of the plans submitted to this Office or further development of this site will
require an additional Stormwater Submittal/Modification and approval prior to initiation of
construction. Modifications include but are not limited to; project name changes, transfer of
ownership, redesign of built -upon surfaces, addition of built -upon surfaces, redesign or further
subdivision of the project area.
This Certification shall be effective from the date of issuance until rescinded. The project
shall be constructed and maintained in accordance with the plans and specifications approved by the
Wilmington Regional Office. This Certification does not supersede any other permit or approval. The
developer is responsible for obtaining any and all permits and approvals necessary for the
development of this project. This could include the Division of Coastal Management under CAMA
127 Cardinal Drive Extension, Wilmington, N.C. 28W5.3845 • Telephone [phone]tt0 • Fax 919L3562004
An Equil Opponunity Affirmative Action Employer

Mr. Thompson
March 31, 1993
Stormwater Project No. 921115
requirements, The Division of Environmental Management under Wetland 401 Water Quality
Certification and/or a Dredge and Fill Permit and/or a Sewer Extension/Collection Permit, U.S.
Army Corps of Engineers 404 Wetland Permit, NPDES Stormwater Permit if disturbing five acres or
A professional engineer must certify that the stormwater system has been installed in accordance with
the approved plans and specifications upon completion of construction. The attached certification
should be received by this Office within 30 days of completion of construction.
If you have any questions concerning this matter, please call Ms. Linda Lewis or me at (919)
395-3900.
Sincerely,
Dave Adkins
Water Quality Supervisor
DA/arl: 921115.MAR
cc: Mr. Larry Sneeden, P.E., Siteworks Design Group
Mr. Sky Conklin, New Hanover County Inspections
Bradley Bennett
Linda Lewis
Wilmington Regional Office
Central Files

DIVISION OF ENVIRONMENTAL MANAGEMENT
PROJECT DATA
Project Name:
Project Number:
Location:
Applicant:
Mailing Address:
Submittal Date:
Water Body Receiving Stormwater Runoff:
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth:
Permanent Pool Elevation:
Total Impervious Surfaces Allowed:
Offsite Area entering Pond:
Green Area entering Pond:
Required Surface Area at Permanent Pool:
Provided Surface Area at Permanent Pool:
Provided Storage Volume:
Temporary Storage Elevation:
Controlling Orifice Type/Diameter:
Crosswinds South
921115
New Hanover County
Mr. Dick Thompson
B & D Development
Post Office Box 777
Carolina Beach, North Carolina 28428
November 30, 1992
Mott Creek
"C Sw"
N/A
5 feet
22.0
5.66 acres
4.44 acres (Crosswinds Section II)
N/A
13,067 square feet
14,810 square feet
20,546 cubic feet
23.3
Myers S-25 pumping 28 gpm at 2' TDH
(21.3 gpm < X < 53.4 gpm)

WET DETENTION POND EVALUATION
1. Yes No The design storage is for the runoff from all impervious surfaces resulting
from 1-inch of rainfall and is located above the permanent pool.
2. Yes No The permanent pool is designed for 85 % TSS removal.
3. Yes No The runoff completely draws down to the permanent pool in 5 days, but not
less than 2 days.
4. Yes No The mean depth of the permanent pool is a minimum of 3 feet.
5. Yes No The inlet structure is designed to minimize turbulence and short circuiting.
6. Yes No All overflow and discharge flows evenly over the length of a natural grass or
artificially planted wetland vegetated filter at least 30 feet in length, with a
slope of 5 % or less, and which provides a non -erosive flow velocity for the
10-year, 24-hour storm with a 10-year 1-hour intensity.
7. Yes No An appropriate operation and maintenance plan has been provided for
the system.
8. Yes No THIS PROJECT MEETS THE STORMWATER CONTROL
REQUIREMENTS OF 15A NCAC 211.1003 (g), (i), 0), (k), and (1) (For
Yes, 1 through 8 must all be circled Yes.)
Brief Explanation: This detention pond is designed to remove 85% total suspended solids and will
therefore be operated with a vegetative filter. The outlet ditch qualifies as the filter due to the long
length of travel by the runoff prior to entering Mott Creek.
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Wilmington Regional Office
B1 HAK 93 ig, 4,
Date Individual Evaluating Form/Plans
3-1 /Aw 1993 4jp,
Date Regional Water Quality Supervisor
cc: Applicant/Bradley Bennett/art/WiRO/CF

Crosswinds South
Stormwater Project No. 921115
Engineer's Certification
I, , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the project,
for (Project Owner) hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the project construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications.
Signature
Registration Number
Date

FROM: , SITEWORKS
Design Group, P.A.
P.O. Box 3988 }�
Wilmington, NC 28406-3988 "``�,
[phone]
TO:
`i EN N R Itffllrigtontonal Woe
DE—tonal
office
c
tLIEUTE Il] OF VERAS41VlJWUL
GATE
3-31-93
JOB NO.
9zo14
ATTENTION
YKS • J-InJT>A
LEwlS
HE:
GROSSW 1Nt)5
Sov-
WE ARE SENDING YOU `.Attached ❑ Under separate cover via ycry the following items:
❑ Shop drawings ❑ Prints ❑ Plans ❑ Samples ❑ Specifications
❑ Copy of letter ❑ Change order ❑
COPIES DESCRIPTION
THESE ARE TRANSMITTED as checked below:
❑ For approval ❑ Approved as submitted
❑ For your use ❑ Approved as noted
❑ As requested ❑ Review and sign
❑ For review and comment ❑ Returned for corrections
❑ FORBIDS DUE 19 _
REMARKS
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ PRINTS RETURNED AFTER LOAN TO US
n
COPY TO SIGNED: ��ti.1 /J - lJioucG.a.�1

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A S ITEWORKS
Design Group, P.A.
March 23, 1993
Ms. Linda Lewis
DEHNR
Water Quality Division
127 Cardinal Drive Extension
Wilmington, NC 28405
RE: Crosswinds South
Our Project Ref. #92014
Stormwater Project 0921115
Dear Ms. Lewis,
In response to your March 10,
following revisions have been made:
919/799-6808
RECEIVED
MAR 23 1993
Y;'i!mi^;ton Regional Office
DEM
1993 review letter the
1. The pond contours have been revised to reflect the
specified 3:1 sideslope above the normal water
elevation of 22.0.
2. The pond volume calculations have been revised to
reflect the revision made to the contours.
3. The Operation and Maintenance Plan has been
changed to include that the Homeowner's
Association will be responsible for maintaining
the pond's outflow pipe which discharges into the
NCDOT ditch along South College Road.
4. The runoff from CB-3 and CB-5 will pond in the
existing ditch along the northern property line
before entering into the detention pond.
If you have further questions or comments please call.
Sincerely,
SITEWORKS DESIGN GROUP, P.A.
W�"-:JL,J - >,t,�`.
Amie S. Drucker
Vil
MAR 2 3 1993
Z I IV1,
3807-21 Wrightsville Ave. 0 P.O. Box 3988 0 Wilmington North Carolina 28406-3988

SITEWORKS DESIGN GROUP, P.A.
P.O. Box 3988
WILMINGTON, NORTH CAROLINA 28406
[phone]
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JOB CRQsl' rhi 5�or4
SHEET NO. OF
CALCULATED BY S DATE 31/9I9
CHECKED BY DATE
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W i)iXT M I "wJMI (VtlW)®•Yc.fuUT.wv 01471, To UhlNgtlE TW WE I WPIPSON

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State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor Bob Jamieson
Jonathan B. Howes, Secretary March 10, 1993 Regional Manager
DIVISION OF ENVIRONMENTAL MANAGEMENT
Ms. Aimee Drucker
Siteworks Design Group, P.A.
Post Office Box 3988
Wilmington, North Carolina 28406
Subject: ADDITIONAL INFORMATION
Stormwater Project No. 921115
Crosswinds South
New Hanover County
Dear Aimee:
The Wilmington Regional Office received a Stormwater Submittal for the Crosswinds South on
November 30, 1992 and a revision on March 9, 1993. A preliminary review of that information has
determined that the submittal for the subject project is not complete. The following information is
needed to continue the stormwater review:
The contours do not match up with the calculations provided. I get, by planimeter,
12,800 square feet at elevation 22. Your calculations indicate a surface area of .34
GK acres 14,810 square feet) at contour 22 is provided. Two thousand square feet of
differene —is too much. Please verify that your calculated results can be planimetered
accurately on the plan. Contours are my only way of verifying that the required surface
area is actually provided.
2. Pond contours, as shown on the plan, do not reflect your detail that side slopes above
elevation 22 are at 3:1. The measured distance from contour 22 to contour 28 is 15'. It
should be 18'. unchen d or) rev. plan.
3. Operation and Maintenance Plan for the stormwater controls should specify
maintenance for the road ditch at the point the pond outlet pipe enters. If DOT has
permitted the pipe, please send me a copy of the permit (front and back).
Receirea( /e✓. 01F1- rnof
nvfarr'2eo�.
-continued-
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

" ',.
Ms. Drucker
March 10, 1993
Stormwater Project No. 921115
----------------------------------------- Skll coil �jstn�
_ 4. The invert of the pond outlet pipe on sheet C-2 is 23.5, but the detail on sheet C-3
shows it as 23.0. This may change due to volume and storage elevation changes.
23.3
5. Using your numbers of .47 ac-ft storage volume required, and .34 acres of surface
area, the storage elevation will be closer to 23.4. You do not indicate the surface area
at elevation 23, so there is no way to check the volume available between 22 and 23.
Using your contours, the surface area at 23 by planimeter is 14,500 square feet, and at
22, is 12,800 square feet. This will yield a volume of 13,650 cubic feet, which is
7,000 cubic feet short of your calculated volume. You must correlate your calculations
to the plan contours. Z3.3 - /Cca00 volume -- Z054G cF
6. Ditch flow is confusing. The inverts of the outlet pipes from CB-3 and CB-5 (22.46
and 22.87 respectively) are 10" and 5", respectively, below the invert of the inlet pipe
to the pond (23.33). How is the 1" rain from the streets going to flow uphill to the
inlet? _
P0110d1*11q rI Qi,'fCA will occur. Dare w-�nis mainfenayce
ror C:esement beh,gd /o' 5 /- 4 sfecr'fied d✓e 76 00n0(,oq .
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received by this Office prior to April 10, 1993, or the submittal
will be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
DA/arl: 921115.MAR
cc: (2) Linda Lewis
Central Files
Sincerely,
Ms. Linda Lewis
Environmental Engineer
01

FROM: , S'ITEWORKS
Design Group, P.A.
P.O. Box 3988
Wilmington, NC 28406-3988
[phone]
TO:
WE ARE SENDING YOU X, Attached ❑ Under separate cover via _
❑ Shop drawings ❑ Prints ;Plans
❑ Copy of letter ❑ Change order ❑ _
ISIE U LI IEQ OF UUUVM U ME.
DATE
3-01-9$
JOB NO.
1 17-a14-
ATTENTION
�25. LINn4- L.�WIS
RE:
I✓ISS W IN05 Sou Ti-F
RECEIVED
wummgmn Neglunnl U,,,uo
DEM
the following items:
❑ Samples ❑ Specifications
COPIES
DESCRIPTION n r-�r T1
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MAR 0 9 1993
I mrar Artt I r1AmzJmi I I tV as CneCKeO DeIOW:
For approval
❑
Approved as submitted
❑ Resubmit copies for approval
❑ For your use
❑
Approved as noted
❑ Submit _ copies for distribution
❑ As requested
❑
Review and sign
❑ Return _ corrected prints
❑ For review and comment
❑
Returned for corrections
❑
❑ FOR BIDS DUE
19 _
❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS
g
COPY TO SIGNED: VVL�I�D

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OPERATION AND MAINTENANCE PLAN
STORMWATER DETENTION POND
CROSSWINDS SOUTH
DESCRIPTION
MAR
0 3
1993
D E M
--
A detention pond is provided to improve water quality of the
stormwater to be discharged to the NCDOT ditch along NC Highway
132. The pond is designed to detain the first inch of rainfall
of the area draining to the ditch between Crosswinds II and
Crosswinds South long enough for pollutants and sediment to
settle out. The pond is to have a normal water level elevation
of 22.0', a top of storage elevation of 23.0', and 2.5:1
si.deslopes. A junction box is to be implemented to direct the
runoff from the first inch of rainfall into the basin and any
excess directly to the NCDOT ditch along NC Highway 132. A pump
station is provided to pump the stored water from the pond to the
NCDOT ditch over a 2-5 day period.
A substantial stand of weeping lovegrass mixed with sericea
lespedeza is to be maintained within the detention pond.
II. MAINTENANCE
The developer and lot owners shall maintain original
sideslope and vegetative cover during and following road
construction and subsequent house construction. Sedimentation
should be expected during construction activities. This sediment
should be removed monthly and vegetation reestablished.
For the long term, significant sedimentation is not expected
within the basin. The basin should be inspected, cleaned, and
vegetation reestablished twice a year. Debris should be removed
from around and within the pump station monthly. The pump should
be inspected after storms of 1" or more to ensure its capability
to function properly. Grass should not be mowed. If erosion or
die -off occurs, damaged areas should be regraded and reseeded
immediately. ,,
SITEWORKS DESIGN GROUP, P.A.
February 18, 1993
is t 'so
B & D Development
PO Box 777
Carolina Beach, NC 28428
. W�.A�u.- /
Notary
North Carolina
Y2JJ') Naiv� County
I, Sha.rnn N. A+uwell , a Notary Public for
said County and State, do hereby certify
that Dick Tham�Se)nJ personally appeared
before me this day and acknowledged the due
execution of the foregoing instrument.
Witness my hand and official seal, this the
L2(,'0` day of February, 1993.
My Commission expires: 11- a.- q1`/

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► ITEWORKS
Design Group, P.A.
February 26, 1993
Ms. Linda Lewis
DEHNR
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Crosswinds South
Our Ref. Job 092014
Stormwater Project #921115
Dear Ms. Lewis,
MAR 0 3 1993
DENT
-17 #-3 211 15- -
919/799-6808
RECEIVE[
MAR 2 1993
Wilmington Regional office
DEM
In response to your initial review comments, we have revised
our site plan accordingly and are resubmitting it for your review
and approval. The following reponses are numbered to correspond
to your review letter dated December 1, 1992.
1. The junction box at the inlet of the detention pond
has been deleted. All of the Stormwater enters the pond. The
required storage volume is to be released over a 2-5 day period
via a pump; any excess volume will be released via gravity flow
in an 18" pipe to the drainage ditch along South College Road.
(See sheet C-2 of 5)
2.,3. An audible high water alarm is to be provided in
the event the pump malfunctions. (See sheet C-5 of 5)
4. The Operation and Maintenance plan has been revised
to include inspection of the pump following rainfalls of 1" or
more.
5. The surface water from Section II is to be piped to
the detention pond and no longer flows toward Street "A". (See
sheet C-2 of 5)
6. The through street from Section II is Windjammer
Drive.
7. The two drainage pipes at the eastern end of the
project are not directed to the proposed detention pond. They
are to be released into the existing grass lined Swale along the
northern property line. In the future, this swale will be piped
to a detention pond to be proposed for the property north of the
site as discussed in a meeting between you and Larry Sneeden on
February 16, 1993.
8. Pond slopes above the permanent pool elevation are
to be 3:1. Bank slopes below the permanent pool elevation are to
3807-21 Wrightsville Ave. 0 P.O. Box 3988 ■ Wilmington North Carolina 28406-3988

be 2.5:1. (See sheet C-3 of 5)
9. Rip -rap has been provided at the pond inlet and
outlet. (See sheet C-2 of 5)
10. An emergency bypass for the system has been
provided through the outlet structure. An 18" pipe has been
provided at the high water level of 23.1 to directly discharge
excess water to the ditch along South College Road. The top of
the outlet structure is a grate to provide an exit for the water
should the 1' weir become plugged. The elevation of the grate is
26.0. This provides 2' of free -board for added safety. (See
sheet C-3 of 5)
If you have any questions or comments , please call.
Sincerely,
SITEWORKS DESIGN GROUP, P.A.
Amie S. Drucker
cc: B & D Development

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II Conioors do nvf �rlafch op wiye;fL
121,voc) (g) 22 on fhe c or7 fU)rs pry v, o% c� on # e
P/ark, %ur C2IG5 r-dcafe 34 acres ( (4, B)o) sf Q
)CUr ZZ 15 Prdv; c/ed. )vo f&ds---nd sr ire beef'
of c rrfererce is /ao much. Please verir?, -�hzt J,je -
a4 u r C o
I.r canlvurs on �l� ,why, plan,rnef�re� ���1✓ �"�freAresul�
of I¢, 81 f� sf. Can fours bre evc ol) w o-F ver,*� hhzf
14h, s re�u,�eof 15 �cikaity prov,oled,
L.I I O,�o CO I TI�A/S� S 5AOwn 60 Pl �n7, C/o not re-Alpd-
l ' (jefell -'haf S/Ole slopes obc✓e 22 a-e
®le✓.
Distance FoM IZ- lv OF 5l0,dcZ he-
i8; nod is'.
3..j ...1� ow
hove- used Ae 857o T S5 Jabfe however a
Verfaf ed P 1 der " he +eno(IV en prvv; cle d Fr - he
au I'Iz*. In rn � j6,J3e4n en f 4'he rc�ad d; f cl7 /rwe(s a
(w, l ""),' I°n34h N lore. re-- + n,? Greek 25az/, as
f or
�� -!•he vey.efa,Eic,�Iier. z �
'1 /
Penance - q2 n en� :5k eld i✓)cluCYe 5701e e-Y7, - 4J?
pvT w,// mai,7fz,* d /ch �f the occflef rccFo )
SuTµce) or- i /'JUT Wr/l nod n af'-17 f�J
a
aolal a st2fean�f�'Ala � NG15Z north an,tch c� 11
f
it be. manfain2d checkedq Fu-- P.rosi' 8 r'ep::�i red as
necessar in -h e lmmecl;2�e Vick'n; Of- -the Pori) ovLfl��-
o-P pond olcflef l 1, 1's Show. on GZ as 23.5
bA Ce-foil of C-3 shcays 23.0. Th;s ml chase-
1 when volume, 15 recalculafed1 -)Y-rd Shrtc de(-4h chDTed,
7. Usin� Uour � nurn�Jers caF ,q� ac--11 Sfcr Q- volume
2nciJ S+ -)c of surface oree. 4he. sJOrje Jeva%'o-i
4bLId- be 2Z4- 1.4 = 23,4 ' C , 47�34
23 Qs p, show. You c(o not inel,cafe 4he --)ur-Foce area

I

I his m�, reduce Ae. sF ry elev—A'on
zveelev- Z3 �. d Planimekr is Sv() 5-I�
roq nu.n er5 f2aoy t 14-SOD
Usinya os z chPclC : Z 1 = 13Co50 cc of
VO�V(�mie I-I'hz Is prcwideccl bzsed on cur co(74uut-sr. /1 his
i5 :sho(i' b. al// ImUs4 l, wo ,,F �dm four' calcu/aced
Yam►- Vo (u m e.. �n d 5 rUraxje ��e v� � r�,� , -�-�', � C�
W05i correlate +he coreJwrs on 4e plan l� ycam,-
c2�cu�2�'vr,s.
I- o�
the
r% %Ji kh FYow l's call %Us1 17he11 c,-f 1 e-f D,ee s Prot"
C6-3 e C6-5 (Z2, V( ' Z2.8� (erchvel�)
lU'i 4 cjn / %especNvel�v 6we,- +h- +hieinvwr - of
4kQ in lei- pipe {a +he CQ14 (2533) , I �w i s
+he) rar10 rrrtt fYrr� Um 7 �'1 L / L
e 5fYB2 fs gorn p Tp l �lGw
uphill � the i� le>L ? a o
�. ✓ C?�� 9� V�� v j�i�y v�� lh e & /we po/I d m u s t
provio% Fv/r- �n(� a ��s �e PlGw POm --1lhe nrPsenf
I // 0 are
j CrOS5wi1d5 Su O1/Vl-5/Orl, There Oyl'Shny C� S
+hJaz d,rPcr .
IS" �° e eliiorl. /yea pla�� fir the die �Lrre
show -hose OW -s,k /areas ;,?c/uo/e
-Ae. vo/urnc 1h 1-he PC1701 calculalo.?s,
j
I

I

m
c
l9Gs�
1, 3'
StGr2g/e Cleve �oq = 22 -f /, 3 = 2 3. 3
. mU
Co I? - _ /5; 4ZZ 5P
/5¢ZZ f NF/o
;! VolW.we
Con Au✓s. shown cv.;
r/z�-7
c✓a
ncy-l- 6orreslml7d �o
i Cofcaloled Surr3cp
cr/
:54e 5IcreS. P,,I�,e
MC�25UreJ an p12n
r?r2es
TYUm
COIJ7&Jr 2Z �U Co/ItLui ZS
� I
5hou I� he
�
18
_
�OnTpu(5 6n �7n shC�,�lc{ aCCuie%l
re-ne,_+ c&(eu P�'ws 8 cWeY5, %h� aim
�r on Lmt Fb ven$ +' a+
U
4he rebui�ecl
S,¢ is Prbv,'
I
cB-3
s crs-5 (22.46 a 2Z. 97)
DiT,� -Flow 15 cG/FAs)l
0u4le+ �i c 1/7verfs we
� I�a"hC I �J.G'.�' I-
1CW 9r �I12n oF�h leT
Pi�
L
v0
/' (L3 33� 1
Po�1cl %p�u !s phi s
f.hle"17jej r�
Z
7V.e-r� Of c)c(T/eT
sh-aclUl-e
iJ e /o cY, ic/ i/IarG2teC�
on
0/7 Q/e l 2r a5 Z3
If used .v�s S4 Lo 23 = 15, 4 ZZ
15(p 2 + /2 9UO
votume = l = 14 11 F encw�h
C?1nnJ correlate C21c5 w,.Ih con Iziirs. / 1efe,-
Yea.d s 12 ?oo L) 22 r well he%w the. (,eyUiredl !3 l5q
W4� �I ler anj 1 3 I Zs W/v r l f�, 0
T Ca�c �z}e siaraye eleiahon oF- 6Sed on
Con ibUC5 �rUv ded.� Voluvme f c Leen Z2 8 Z 3 i s
tASo FFrie t

Cro560jir s '$DaA From- PoO
4
On- S-Ae ImforVious (IIG�x�) f (1g7X *
6FF- S-fie Imp?rv��s = Crass GU;�ds �ec/io� Lr>
R� 90( S47 {- 925.4- 250) + �30 �2� = 320R4- .73 ac-
40 (541 +- S2S f Z.So) + C(��,�xZ) _ &4.199 = l• Sam
Crossw,.�ds
4,4 - l,5 = L.of 2cres, irperocus %rom
(S�-k(l vrks chose fa 1'19du ole the
#e lc�7017d VOIUMO) and -hv cOun�-
_ I as laf�{ imrervious . -0764,-
7-oT,4L = ac
&0 uii'ec 5Ur7s2Ce --ME?
goo `'`% s' deep 7 3 7e
igeer 15 us/�q c?57o Riure� h6t. �o V�e a eol )q-1�er-
J5 �ivwn, C/ (S,¢`70) Unless ex-4 dl,;U counts as t,)lFer.
lVUAll
i %ram' Provi'decl NWL = 12, (300 Sf
Enjiieer ez,lcs l4, 31USF proVi-Jed ZZ
1F F'l fe, 5.17 (.053) 30 ac = 1315q c FFere,,ce
Volain e 5.'7 435G0
r(,oSci V) By p%an inefej
5A �a NWL 23 = 12800 f 18/5 = 1467/5 sp- l4r5oo
1
pfovc��Vo �U 4A1 2 = 2 x 2 — I3-707 cF Gal enoUJc h /
i17en9
I udo Spec all 15 boVC PP.

NEW HANOVER COUNTY
ENGINEERING DEPARTMENT
414 CHESTNUT STREET
WILMINGTON, NORTH CAROLINA 28401
TELEPHONE (9l9) 341-7139
WYATT E. BLANCHARD, P.E.
County Engineer
December 9, 1992
Mr. Dick J. Thompson
B & D Development Corporation
4405 Bavarian Lane
Wilmington, North Carolina 28405
RE: Grading Permit G.P. 40-92
Crosswinds South
Dear Mr. Thompson:
RECEIVED
DEC 14 1992
Wilmington Regional Offioe
DEM
STORMORY 1!lt
,;;I � � �s U U Is gi;.
��J�U( DEC 1 5 1992 U
DEIVI
,01 # 9S1115
This office has reviewed the subject sedimentation and erosion
control plan. We find the plan to be acceptable. HOWEVER, THIS
IS NOT A GRADING PERMIT.
Please be advised that a copy of the approved soil erosion plan
and a copy of issued grading permit must be available at all
times at the site.
New Hanover County's Soil Erosion and Sedimentation control
program is performance oriented. Requiring protection of the
natural resources and adjoining properties. If following the
commencement of the project it is determined that the plan is
inadequate to meet the requirements of the New Hanover County
Soil Erosion and Sedimentation Control Ordinance, this office may
require revisions in the plan and its implementation to insure
compliance with the ordinance.
Recognizing the desirabilit-- of early coordination of
sedimentation and erosion control, I would like to arrange a
pre -construction conference with owner/agent, grading contractor,
engineer, and myself. Proceed with the placement of the planned
erosion control measures; these will be inspected at the
pre -construction conference. Please contact this office to set
the date of the pre -construction conference at which time you
shall be issued the grading permit. However, this permit will
not preclude any other permits or approvals necessary for
beginning or completing this development.

Erosion control measures to be installed prior to grading:
(1) All slopes to be on 3' (run) to l' (rise) ratio.
(2) All C.A.M.A. and State drainage requirements are
adhered to.
(3) Rye shall not be used as a permanent cover.
(4) Construction exit to be located where construction
traffic encounters a paved surface.
(5) A revised plan must be submitted to cover future
development prior to work in these areas.
(6) Strongly recommend sloping existing ditch on north
property line on 3' (run) to 1' (rise) ratio.
(7) All pipe discharge should be kept as high as possible
and, in any event, energy disruptions must be installed
at each discharge.
(8) Install pond and discharge first.
I look forward to working with you on this project.
in erel ,
Jim C aig
o servation E in
New Hanover County
JC/nb
cc: Larry Sneeden, Siteworks
Linda Lewis, DEM
John Terrell, Inspections
Ann Hines, County Zoning
,;iusUuisjl
DEC 1 5 1992
QEPd
JOJ # 92 11 I S

}
State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James G. Martin, Governor Bob Jamieson
William W. Cobey, Jr., Secretary December 1, 1992 Regional Manager
DIVISION OF ENVIRONMENTAL MANAGEMENT
Ms. Arnie Drucker
Siteworks Design Group, P.A.
Post Office Box 3988
Wilmington, North Carolina 28406
Subject: Additional Information
Stormwater Project NoO21.115)
Crosswinds South
New Hanover County
Dear Amie:
The Wilmington Regional Office received a Stormwater Submittal for the Crosswinds South on
November 30, 1992. A preliminary review of that information has determined that the submittal for
the subject project is not complete. The following information is needed to continue the stormwater
review, per our meeting of November 30, 1992:
1. The junction box at the inlet to the pond should be deleted. The volume in excess of V
cannot bypass the pond. It must enter the pond first, then exit through the outlet
structure, or over the emergency bypass if the storm exceeds the 10 year event.
2. Provide dual pumps to drain the stored volume. If the pump were to break down, there
would be no exit route available to the stored water.
3. If dual pumps are not provided, a high water alarm and audible must be provided.
4. The Operation and Maintenance Plan should provide for a more frequent inspection
schedule of the pump(s), such as daily, or during rainfalls of 1" or more.
5. The drainage easement entering from Section II, just east of South College Road, is
blocked by the new road Street "A" from entering the ditch or the pond. While it is not
mandatory that the drainage from this section be directed into the pond, it must be
allowed to either bypass the pond or to enter the ditch and be accounted for in the pond
design.
-continued-
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Ms. Drucker
December 1, 1992
Stormwater Project No. 921115
6. Please clarify which street is the through street from Section II, Windjammer or
Crosscurrent.
7. All road surfaces must be routed to the pond. Two of the swales appear to not be
directed into the pond. - DineCted 1a a I U fAic 0a70l. Mai nee(t fv
Grlf o,�r a$'cc- /h- i'ce',h�,i a'- Laf 9 VZC..
8. Pond slopes above the permanent pool elevation must be either 3:1 or permanently
stabilized with material other than grass.
9. Provide energy dissipation at all pond inlets and outlets.
10. Provide an emergency bypass for the system.
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received by this Office prior to December 18, 1992, or the
submittal will be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer I
DA/arl: 921115.DEC
cc: t(2)Linda-L-ewis-�
Central Files
3,3,g3
cs5en I. al�y_i �l2 �n'�ac% Ci reins iu 2 P�n�l
Pond vie 6l fiches 1
Appro✓¢ a F er- P�L �4v2 /oono/
Jeve lopm a i� o-F lof 5
"4PP/ore
a/o/prcvQd e
L,l s /0.05 WA fha
/n 5talleol 0 slope5 w,'ll he 2
112 ol�s,irs
bu,' 74
/, fu iure
Sec/iuns Z
f P/i in '�- G/,'// aof
5:/ ( 1 �/ cWAfine Pont✓
146P.ove
he
bu, /f.2
,s

S'iTEWORKS DESIGN GROUP, P.A.
P.O. Box 3988
WILMINGTON, NORTH CAROLINA 28406
[phone]
JOB _GT(LOSS\y/U.of TO V714
SHEET NO. ' OF 4-
CALCULATED BY A S D DATE I I— 1 8—/ Z
CHECKED BY C L S DATE / / 20 / /� 2
vPCN[1M1IW 01•71. to 0.Nn VNOM LOLL flIEFIdN125fJN

SITEWORKS DESIGN GROUP, P.A.
F P.O. Box 3988
WILMINGTON, NORTH CAROLINA 28406
[phone]
JOB GQOSSWItJIiS
soo-rii �2b 14
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SHEET NO.
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CHECKED BY
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SITEWORKS DESIGN GROUP, P.A.
i P.O. Box 3988
WILMINGTON, NORTH CAROLINA 28406
[phone]
R TM IIS�9 )Mil(P.W®.*G 4 41111JtftlP TWMI W1iSUN
JOB „jnc Sov'r'? c12 C2 /cJ
SHEET NO. 3 OF 4-
CALCULATED BY AS D DATE / I / 4 / 9 2
CHECKED BY G I-' S DATE lI A0
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SITEWORKS DESIGN GROUP, P.A.
P.O. Box 3988
WILMINGTON, NORTH CAROLINA 28406
[phone]
JOB GRoSS.OItito .So 4 -rP A 9a.bE
SHEETNO. 4 4-
OF
CALCULATED BY A- 5 T) DATEa-
CHECKED BY G L f DATE
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s tL e r. t•
'• E
i
s
r �

500/2 +.
-25'
oo Ell] ❑❑o
5.
ry
DIMENSIONS
S25AI and S25AIC
S25 with Mercury
Float Switch
SIDE VIEW
S25AI-PS and S25AIC-PS
S25with Vertical
Proximity Switch
TOP VIEW
3.
2.
1 /4 Horsepower
Submersible Sump Pump
I . Mercury Float Switch (S25A1 & S25AIC). 13 amp
rating at 120 Volts A.C., 90' operating angle, 2Y,"
cylinder, polypropolene material. Minimum
recommended tether is 2%' as shown on dimensional
side view below. Pump down approximately 7" Pumn
down can be increased by increasing tether length.
Switch cord for both switches has a unique quick -
disconnect, positive sealing, plug-in fitting that connects
to the motor cap.
IA. Vertical Proximity Switch (S25A1-PS & S25AIC-PS).
13 amp rating at 120 Volts A.C., 1V diameter float x 3"
long. Pump down is approximately 5" and cannot be
increased. The proximity switch model can be installed
in 10 diameter sump.
2. Motor Housing. Heavy cast iron for best heat
dissipation.
3. Motor Cap. Contains unique quick -disconnect,
positive sealing sockets for connecting power, cord and
switch cord.
4. High Speed (3000 RPM) Motor. Oil -filled for best heat
dissipation and continuous lubrication to bearings and
mechanical seal. Self-contained motor provides
accurate shaft alignment and serviceability. Shaded
pole motor has no starting switch or relay mechanism.
Overload protection built in.
5. Mechanical Shaft Seal. Carbon -ceramic face
materials and stainless steel spring. Stationary position
presses into motor housing.
6. Pump Impeller. Recessed type. Operates completely
out of volute passage giving full opening for flow of liquid
and solids. -
PERFORMANCE CURVE
Myers Submersible Sump Pump
IS M 15 60 T5 N 105
FLOW PER MINUTE- U.S. GALLONS ILPMI
1
", 1
K 379r 5/87
Prinled in U.S.A.
yers
F.E. MYERS. a Pentau co.
400 Orange Street. Ashland. Ohio 44805-2285
410/9A0_I IAA T 10 OA.YAA4