SW8950613_HISTORICAL FILE_19950706

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW81%otw13
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
C� HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
�°1�15 0'10 to
YYYYMMDD

0
State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
July 6, 1995
Mr. Michael L. Prevatte
Wilmington Development Company, Inc.
4505 Market Street
Wilmington, North Carolina 28405
Subject: CERTIFICATION OF COMPLIANCE
with Stormwater Regulations
Stormwater Project No. SW8 950613
Sleep Inn Motel
New Hanover County
Dear Mr. Prevatte:
This Certification is pursuant to the application for Sleep Inn Motel received on June 12, 1995,
with additional information received on June 28, 1995. Staff review of the project plans and
specifications has determined that the stormwater control system as proposed for Sleep Inn Motel will
comply with the Stormwater Regulations set forth in Title 15A NCAC 211.1003(i). The ninoff from
81,000 square feet of impervious area will be treated in a detention pond sized to achieve 90% reduction
in Total Suspended Solids.
Any modification of the plans submitted to and approved by this Office or further development
of this site regardless of the fact that the modification may be less than 1 acre, 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, change of owner address, 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This Certification shall be effective from the date of issuance until rescinded.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 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 more, local County or Town Agency
permits under their local ordinances, or others that may be required.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Mr. Prevatte
July 6, 1995
Stormwater Project No. SW8 950613
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
must be received in this Office within 30 days of completion of construction. Failure to provide the
Engineer's Certification is considered a violation of this Certification.
The detention pond must be constricted in it's entirety, operational for it's intended use, and
permanently vegetated prior to the construction of any impervious surfaces proposed as a part of the
project, except roads. Failure to construct the stormwater controls as approved is considered a violation
of this Certification.
If you have any questions concerning this matter, please call Ms. Linda Lewis or me at (910) 395-
3900.
Sincerely,
Dave Adkins
Water Quality Supervisor
DA/arl: S:\WQS\STORMWAT\CERTIMC\950613.JUL
cc: John Kuske
Alan Golden, New Hanover County Inspections
Bradley Bennett
Beth Easley, New Hanover County
Linda Lewis
Wilmington Regional Office
Central Files

Project Name:
Project Number:
Location:
Applicant:
Mailing Address:
DIVISION OF ENVIRONMENTAL MANAGEMENT
PROJECT DATA
Sleep Inn Motel
SW8 950613
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:
RequiredSurface Area:
Provided Surface Area:
Required Storage Volume:
Provided Storage Volume:
Temporary Storage Elevation:
Controlling Orifice:
New Hanover County
Mr. Michael L. Prevatte
Wilmington Development Company, Inc.
4505 Market Street
Wilmington, North Carolina 28405
June 12, 1995
Spring Branch
"C Sw"
N/A
5.0 feet
30 MSL
81,000 square feet
N/A
68,000 square feet
5,735 square feet
6,744 square feet
7,600 cubic feet
8,370 cubic feet
31.1 MSL
1.5" pipe

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 90 % total suspended solid (TSS) removal.
Therefore, no vegetative filter is required.
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 An appropriate operation and maintenance plan has been provided for the
system.
7. Yes No THIS PROJECT MEETS THE STORMWATER CONTROL REQUIREMENTS
OF 15A NCAC 2H.1003 (g), (i), (k), and (1) (For Yes, 1 through 7 must all
be highlighted Yes.)
Brief Explanation: This detention pond is designed to remove 90% total suspended solids without the
aide of a vegetative filter.
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Wilmington Regional Office
1. _/S ,.��t'� L !C C� ✓�--�C.L '-L �7
Date Individual Evaluating Form/Plans
Date Regional Water Quality Supervisor
cc: Applicant/Bradley Bennett/arllWiRO/CF

Sleep Inn Motel
New Hanover County
Stormwater Project No. SW8 950613
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,
(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

DIVISION OF ENVIRONMENTAL MANAGEMENT
A&K #94263
DENSITY
PROJECT DATA 101 JUN 121995
Project Name sleep Inn Motel U11h quI
Location (County, Township/Municipality, Address, State Road) Harnett-Y'tzMs"tYiP;- ----
New Hanover County. The site is on Market St. (US Hwy 17) near the corner of
Market St. (US Hwy 17) and Lennon Drive (SR 1309)
Owner's Name Wilmington Development Canpany, Inc.
Mailing Address 4505 Market street
Wilmington, NC 28405
Phone Number 910-799-1214 Submittal Date 5/30/95
Brief Description (include map and appropriate drawings) The stoxnrwater detention pond has
been designed to serve the Sleep Inn Motel site ass own on the enclosed plan
Name of Water Body Receiving Stormwater Runoff smith creek
Classification of Water Body C-SW If SA waters, engineered system, and distance is < 0.5
miles, attach report of chloride sampling results- mg/1•
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major Sedimentation/Erosion Control x
404 Permit DEM/DHS Sewage Disposal
Other (Specify)
CALCULATION OF BUILT UPON AREA
Built upon area means that portion of a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the
project includes areas draining to different water classifications, please note them separately below.
Classification
Built upon area
Total Project Area
% Built upon Area
Allowable B/U Area
Subwatershed
C-SW
1.86 Ac./81,000 S.F.
3.42 Ac./149,000 S.F.
r�54.39%
'30%
Subwatershed
Is the Project B/U Area < the Allowable B/U Area? No (If no, an engineered system is required.)
% Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA waters -- 25%, Other -- 30% Office Use Only
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated The stonnwater will be
)')TORNATER
'un`U JUN 1 2 1995 U
FROJ Sou 8 9s0 c�(3

BUFFER AREA
Is the built upon area at least 30 feet from mean high water of all surface waters? YeS If no, please
provide a description
(Note:,Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stormwater control
requirements through density limits.)
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this
project shall limit the allowable built -upon area per lot to 81, 000 square feet inclusive of right-of-way,
structures, pavement walkways or patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will run with the
land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be
changed or deleted without consent of the State.
CERTIFICATION
I Michael L. Prevatte certify that the information included on this
submittal form is correct, that the project w constructed 1 be in conformance with the information, and
that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and
agree to abide by the deed restriction statement above.
Owner's SignaWte Date
Provide authorized person or firm name and address below:
Andrew & Kuske Consulting Engineers, Inc.
202 North Fifth Avenue
Wilmington, NC 28401
I, Jeria M. Coleman , a Notary Public for the State.of nrth
County of New Hanover , do hereby certify that M.L. P t
appeared before me this 31 s day of Ma 1 ,
of the foregoing instrument. Witness my hand and o rcial seal, Q y °
� �p1ARY. 2
cas
My commission expires 7/ 2 6/ 9 7 i
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Regional Office
t(1L `l5,
Date
Date ,; n
cc: Applica it/WiRO/Bradley Bennett/Central Files
execution

Andrew & Kuske
CONSULTING ENGINEERS, INC.
STORMWATER MAINTENANCE SYSTEM
MAINTENANCE PROCEDURES
John R. Andrew, P.E.
J. A. Kuske, P.E.
J. Phillip Norris, P.E.
SLEEP INN MOTEL 'Now6������
A&K PROJECT NO. 94263
1. RESPONSIBLE PARTY E 6 E 0 W E D.
A. The project will be built and maintained by: �U�J
Wilmington Development Company, Inc. JI,N 2 199$
4505 Market Street D E M
Wilmington, NC 28405 Pq100 I3
910-799-1214
2. DETENTION POND AND COLLECTION SYSTEM
A. The detention pond will be checked after every major storm event to insure that the
outlet structure is working properly and is not clogged with debris. Remove any accumulated
sediment or debris. Any signs of erosion or deterioration of the pond side slopes or any other feature
must be repaired before the next storm event.
B. The depth of the pond will be checked every six months to determine the depth of the
permanent pool. The pond will be cleaned out when silt deposits reduce the depth of the permanent
pool below 3.75 feet. The side slopes of the pond shall be mowed as required to maintain a grass
height not to exceed 8 inches in height.
C. Collection basins and piping will be checked every six months and kept clear as
necessary.
3. CERTIFICATION
The owner will submit to the Department of Environment, Health and Natural Resources an
Engineer's Certification that the stormwater facilities were constructed in accordance with approved
State of North Carolina
I, Jeria M. Cole
aforesaid, certify that M.L.
day and acknowledged the due 6
WITNESS my hand alp
NOTARY'S CERTIFICATION
County Of New Hanover
a Notary Public in and for the State and County
, personally appeared before me this
31st day of May , 1995.
My Commission Expires: UZ`
:
7 / 2 6 /q3�
202 North Fifth Avenue Wilmington, 1 a 28401 Telephone: [phone] Facsimile: 910/343-9604

Andrew & Kuske
John R.
Andrew, P.E.
CONSULTING ENGINEERS, INC.
��V9F9�%E jj
A.
Kuske, P.E.
IL4p}1
IUI
J. Phill lip
Norris, P.E.
JUN 2 8 1995
WilmingtonF1NCh 28401e
FacsimTelehile:
910/343-9604
----------- -
LETTER OF TRANSI$i�1TAL
To:
Date: /
Job No.: /
Attention:
Subject:
L,../ .� CT S�✓B D6/
WE ARE SENDING YOU ATTACHED
VIA [J UNDER SEPARATE COVER
(I Shop Drawings M' Prints (] Tracings
(J Specifications (] Disks M Copy of Letter
FAX TRANSMITTAL: NUMBER OF PAGES
INCLUDING THIS TRANSMITTAL
Call 910/343-9653 if you have any
difficulty receiving this message
COPIES
DATE
DESCRIPTION
co/� Y oE S/tEE� C/
00 o
fpt'airlita
Fl9aHRT
THESE_ ARE TRANSMI� 9 CEFKEI BELON: I I
�For Approval U () No Exceptions Taken [] Rejected -See Remarks
[y/�For Your Use JUN 2 8 1995 (] Make Corrections Noted [] Returned For Corrections
M As Requested D. _E M [] Amend and Resubmit [J Return Corrected Prints
[] For Review anFF QLA�! SWn R ota [] Your Prints Returned After Loan To Us
[] FOR BIOS DUE CC []
REMARKS:
/'7/Li5///FL P.eEyJl� /G✓/Gr1//�GT�i/�/i/
Signed:
CONFIDENTIAL AND PRIVILEGED: Information contained in this document is privilegeff and confidential, intended for the
sole use of the addressee. If you are not the addressee or the person responsible for delivering it to the addressee
you are hereby notified that any dissemination, distribution or copying of this document is strictly prohibited.
If you have received this document in error please immediately notify the sender and return to the address above.

Winter Park Preschools
19 Lennon Drive
Wilmington, NC 28405
910.392-3430
June 21, 1995
Michael L. Prevatte, Vice -President
Wilmington Development Company, Inc.
450-1 Market Street
Wilmington, North Carolina 28405
Re: Sleep•Inn, Market Street
Drainage Easement for Stormwaler Detention Pond
Dear Mr. Prevatte:
Please accept this letter with our signatutes as PERMISSION to install approximately 20 linear
feet of 12" RCP pipe and an energy dissipator that will encroach our property into the ditch that
runs along the back of our property as shown on the plans prepared by Andrew & Kuske
Consulting Engineers, Inc The pipe will extend frorn a detention pond which will be located on
the adjacent property owned by Wilmington Development Company in conjunction with the
Sleep -Inn project. Our property is described in the New Hanoi er County Registry in Deed Book
1 l67 Page 743.
Jan es L. Hall STOR p � (� TER
SylviaM. Hall fNl N�'�1�9®�qN O�111 B
lIm JUN 2 R 1995 U
DEM
rgoj - J,u 8 I Soo I S

0
State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
June 20, 1995
Mr. John Kuske, III
Andrew and Kuske
202 North Fifth Avenue
Wilmington, North Carolina 28401
Subject: ADDITIONAL INFORMATION
Stormwater Project No. SW8 950613
Sleep Inn Motel
New Hanover County
Dear Mr. Kuske:
The Wilmington Regional Office received a Stormwater Submittal for the Sleep Inn Motel on June
12, 1995. 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:
1. Please delineate the 149,000 square foot drainage area.
2. Provide a copy of the easement agreement for the pond outlet pipe.
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 July 20, 1995, 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
DA/arl: S:\WQS\STORMWAT\ADDINFO\950613.JUN
cc: Linda-LewiS-I
Central Files
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Andrew & Kuske
_ = — CONSULTING ENGINEERS, INC.
June 7, 1995
In R. Andrew, P.E.
[JUN
J. A. Kuske, P.E.
Phillip Norris, P.E.
1 11995
Ms. Linda Lewis, Environmental Engineer
NC DEHNR-Division of Environmental Management
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Sleep Inn Motel
Harnett Township, New Hanover County
Stormwater Management Plan
A&K Project No. 94263
Dear Ms. Lewis:
Enclosed are three sets of plans for the subject project,
calculations, a stormwater maintenance schedule, and the
appropriate Division of Environmental Management stormwater
application. We have submitted the erosion control plan to New
Hanover County for approval. Please note that any future
development on this site which is not shown on the enclosed plans
will require a separate stormwater submittal and possible
modifications to the proposed detention pond.
Please review
any questions
assistance on
Sincerely,
this information
or comments you
this project.
ANDREW & RUSKE
CONSULTING ENGINEERS, INC.
John A. Kuske, III, E.I.T.
JAKIII/sbs
enclosures
cc: Michael L
94263-1
for approval and contact us with
may have. Thank you for your
� qRI A
� v r, 1;-
dun 1 2 1995
DEM
FROJ�w895�13
Prevatte/Wilmington Development Company, Inc.
202 North Fifth Avenue Wilmington, North Carolina 28401 Telephone: [phone] Facsimile: 910/343-9604

Date
De -sign Andrew and Kuske Sheet
—RR-� 202 N. Fifth Ave." CONSULTING ENGINEERS, INC. Wilmington, N.C. 28401 Of
Check Job For Job No.
57aR�'7�/•A�l.0 fifCC�C�AonGi SLEEP /NA/ 7¢Z6.3
S TO,er'! L/�T�•C G�GG riG /?J on/S'
SG EE /� /�//✓� w/A� r�T IT
f/i1,CnJE�T7Zr/n/.sh'i/�� iVEc✓ y�.�/ocrE..� Goun/Tf / /./, G ,
DEM -
PROI Sw8 gsoco l

�v zb•�
7fi1¢1
s��d z�. •£ / ,ems 000'bfi/ = s-�yv �B-r/v�v
%8 / / _S o0o i8 = os
7a� 1// 7-c- '
�S a"o L of = s�ni ry ss�»v '�virys�s
J76�ct / u1TlU'
�yywd�j' y�Prv� (J�77G�d�f/ �'fJ 77�iy �v�c.�do��i��0
•b-yy 1.>W-,Xe -2L1?L 3WZ 10^/ J7 �-1/1•
3,SlC 7'��' f�?yd/-�id�✓/b7'G dfl1 'i-7"o 31is- %✓N/
dgdZS �!+'1 ?�� Gdvv9/lam S/ O/prod /�ote/�31�7V �//1 :-71oN
1-S'�i.6� 1'��'�'C/ ss�»v � to-� yivia•r6o' ��/viv�i�0 �-,v1
�o S1JrsNoJ �71is' �t� 70� v�db 1'�"i�y�d/v/ �sY1 10
%0/i6 1 NN/ d��7S �1L �i 7NJ a�1L/7�✓Y413
'ON 4of J03 161s 4of hoa40
Z% 10 bOVK'O-N'uolBulwllM 'ONI 'Sd33NIJN3 9NunSNOO a^d g4lj'N ZOZ �� ZZ/S
laeyS aMsn>{ pub n�aipuy uBlsaa alOa

Z1-,e 60 •8yG = Toed 16� A�--704-, �-gA-.eJ✓7S O:?,J'/—,P
z1-.,, E Z '8F LS c 000'S�j 2/SS£O 'O = YS air//D�'
- - - - --£•� =zA
: �'7Lrll1 /1nJ� ass-�odr31/�2
- - ... �liSr3(! -..olo -L�£ •�S - 1s:� 7-L�ol/�7' JS1
oo'SZ .= L-'2lLoA
00 'off' o ood �a-ti+�vN
�ivrzr,J- on�ay /vo�/v31
Z/
�1z/ oJOGbg, y 0vo1/8 % %
2A- %8 '/ �S000'/g = 1r,orny9dU/ �b11
-1:7 %zA6
'ON 4of J03 �1�15 qof hOego
Z/ )O z M79Z '3'N 'vo;Buiwpry\ 0NI 'Sd33NI9N3 9N1lnSN00 a^d 4g!3 N ZOZ
jaayS 9�sn>{ pup tAejpuy u6lsa4 aipo
t

Did
r1�LZ�B �� »s�8 zL i = r��v.-,��•v �.s-v z
r- s o S -z
{78 = O�'D�i�o2p/ 3�Jy7ols 7d1O1
�1�
z
Z1�S'Z89 = (=o'of"7 �P'd �v�..7»N 1!� t•�y6� ��NyYi'S
z
1� 8 s 68 = (oi •i�� x+od � ��1~v 6-�'a v 3wsr�S
N��rzt3b' r1� F'88L �7'¢!J' a1 -�;'19� IP ¢G O-7�1V
lv o 7/l7 �-t/� ��Jf/7QLS
Z1y_$ZS% =
.0-
1v 6 Z 'S £L. S = 7co/
vr-
fYvo�y»7�Y7 ��-fiy¢1S b?a'
ON qOr lo3 31as1S qor �0640
10 £ bODBL ON 'uoieuiw!!M 'ONI 'Sd33NI9N3 9NunSN00 eAb 48!3 'N ZOZ M-� S6,/rr/S
yaeyS e�sn>{ puo n^ajpuy �ualsao aloa

4y�s
S�J O '�i i• -7.3LVL.�ixoyddd� �7Prvb/r' 4 7/V,57
v
o
r XviOao7d q/V oo'z2 = —/W& do 41
i ZL %£ _ . Z�'o f . -/ '/.r = y3tf iy >o a'6�4
o8•p =� �sn (zfi'E�(Sz�7(�O� =b
'i✓/w o f � ' y� o/ y�Nr S Z '�i = Z
e 6— -M--;> = b
N al�rir.-.7i� you' i�i�':zl/7'7 ti7¢GS �tnrvi�+ o£
y6��.: O/ �slL yNi.J'Il 31/,J' �35Cc Yam O �-vr�76'J �
'ON qo /vivi d��7S o3 -z1b15 qor �084O
z/ 10"o< WVE '0'N 'u0y6u!wIlM •0NI 'Sd33N19N3 9NunSNOO a^d 4O!4 N ZOZ
1aagS a>Isn>i puo Majpuy u61Saa aiod

Exhibit 11
O
180
10,000
166
8,000
EXAMPLE
156
6 000
D•42 Inch. (3.5 foot)
6.
144
5,000
0.120 cfs
:
6.
4,000
• ttt►
6'
S.
132
3,000
D feet
5'
4.
ltl cs e.e
,
4.
120
CZ) 2.1 7.4
IOB
2.000
(3) 2.t T.T
4'
3.
00 Is foot
3'
96
1,000
3.
Boo
84
600
-
~
2'
2-
500
/�
/
72
400
/
3t
2.
w
u
300
`g
=
N
1.5
1.5
z
cn
cc
60
p
200
1.5
z
_
z
/
W
0
54
/
Q
O_
W
100
- W
J
48
/ s
00
z
Q
=
U
42
u
80
Q.
1.0
I.0
0
0
50 HW SCALE E RANGE
10
I
40
D TYPE
¢
)_
W
36
30
(1) S4aer$ edge •1th
3
9
'9
�
33
nrad.all
U
.9
Q
0
20
(2) Groove end ..tn
Q
30
nrad.oll
S
•8
.8
I
1
! Groan and
•°
1
Y7
projecting
10
24
°
7
.7
.7
6
To use scale (2) or (3) pro)ect
21
horizontally to seal• (q,roon
1
4
was stralghl Inclined line through
D and 0 scabs, ar reverse as
6
3
illustrated.
6
.6
IB
Q
15
Q = ¢bGFf
.5
.5
1.0
5
12
HEADWATER
DEPTH
FOR
CONCRETE
PIPE
CULVERTS
HEADWATER
SCALES 2113
REVISED MAY1964 WITH
INLET
CONTROL
BUREAU
DspuellclroADa.wnnu
vi-11

Date Design Andrew and Kuske Sheet
202 N. Fifth Ave. CONSULTING ENGINEERS, INC. Wilmington, N.G. 28401 6 Of /Z
Check Job For Job No.
s7AG�cif�,rc C,ycc�c.p/,n,.ij .SGEE.P 9¢263
S/zE EnECGEtiG >' SPicc u� Y
]z,-E
(�✓/L G Lt`ifc/E
O. SO � OF F.GEE6a�c.0 �N Tit,C
LGr✓ S/� O�
T/t�` Fb�/p
n, = 7,63cFs
77,4,E .Srz>,c.- -
/4 (ls)(o, ¢oJ
- - - -
V��'� L/-vE7J soiGc u�y o,�

STORM DRAINAGE DESIGN DATA SHEET
PROJECT 1--vA✓ COMPUTED BY DATE 6 7 2-L.
LOCATIONCHECKED BY SHEET_-.7—OF /Z.
STORM FREQUENCY /o YRS. --z7= `� ZS C= o, eo
LOCATION
AREA(ACRE)
C
INTENSITY
QoCIA
(C.F.S.
REQ'D)
PIPE DATA
REMARKS
FROM
TO
SUB
TOTAL
TOTAL
H
L
I
I
TYPE
N
S
ENGTH
SIZE
VEL.
(OFF DQ
RED
Q
AVAIL.
p'At> r
z
Q//WZ
G n/OZ
�22,1_3
%S'
.S�
B.O
6
3
ui/o
OSS
/.97
Z6z
/S"
35-
0It
c�ivoi
Ci.c oZ
3
o
Z /S
G110ZP2
,o.. 16
O. /
Z
76Z
S. 7
Zo '
1134
EL
C . RUNOFF COEFFICIENT N COEFFICIENT OF FRIUUU+
11 - NEIGIII ABOVE INLET OF MOST REMOTE POINT S - SLOPE W
L - LENGRI OF DRAINAGE AREA 0 - FLOW (C.F.S.)
I . INTENSITY OF STORM (INCHES)
IVV IC.. ULN4" IJ UAZLU U.
DIE SUM OF DIE AREAS
AND NOT III[ SUM OF
111E OISCVARGES.

_._7.v�rvo� /vo/S'�7�".8' JS'67� _L�7J✓-.._
yae W-ed /SS'/v U S/ xS
Z 7
'7
�71/61 -voY�
z f i7�
/.�yatS OA o/ 7rirn0 .4iL »/d- T 1"o v7WeV �• z/ _
_. _s�of9'L /1Jzti�o �.-2/ -�0-�/�I�G'J--�--J.� _O•{� -�j
-� � •� -.L .. � x � z /f �/� ¢ems t1� wil-vim �
ter- �s
ortr o7 /�.o�J oy� D J3'b'77 1a/
, o/ X, o/ = CS'n A. = z7
£b
-b
!/
I--¢cvr�s 'VAS/d N/
L+nt�nC�-w 1��f�1 6�164 Noi��O vo3� f�J Z9'L =b
Qe'o
Sz d7
(/9 'off oz'o (6ras'o7 s6 0 = 2
zA 'L =.b
71� /
'ON qof i°3 �1615 qop �oa4)
!O 8 MIR 'O'N 'uo46ulwIIM 0NI 'Sd33NI9N3 9NuinSN03 a^b 41j!d 'N ZOZ ��*r
jaayS e�sn>{ pub n,\alpuy u61sa4

Once the average velocity is determined, the travel time can be
kited as: L
Tt 3 v
(3) Open Chanml Flow - For open channel flow, the travel time is
muted using an estimated velocity of flow in the channel section.
'Rue velocity is estimated using Marnlisg's equation expressed as
follows:
V 1.49 r% sh
n
where
V is velocity in feet per second (fps)
r is the hydraulic radius Which is equal to
the channel
area divide by the Wetted perimeter or the
perimeter
length of sides and bottom below the line of flow.
s is the slope of the hydraulic grade line
or charnel
slope in ft/ft and
n is the M iming's rcu#u:ess coefficient
Once the average velocity is determined f2: the above
equation, the
travel time can be computed as in 2. above.
The time of concentration, Tc, is a s=aticn of the
three travel
ti cmpzted In the rrr� steps.
The rainfall intensity for design can be obtained
frffi the Intersity-
AsaticrrFrequency 'table or the equations provided
below.
M-je return
period for design in the City of Wilmington for
stormwater mares, ct
systems is the 10-year return fregim-lcy event.
IPr�2sITSt-�JFAZZCCF-Fi hN(Y MBIb'*
WIIMING'ILN, NC
Return Period ->
CUR]ITICN 2-yr 5-yr 10-yr 25-yr
50-yr
100-yr
[iVhr] [iWhr) [in/hr] [>rV(hr]
(in/hr]
(hVhr]
5 min 5.88 6.63 7.23 8.15
8.87
9.60
10 min 5.06 5.76 6.30 7.13
7.79
8.45
15 min 4.36 4.97 5 45• 6.17
6.75
7.32
. 30 min 3.17 3.79 <M 4.92
5.44
5.96
60 min 2.10 2.58 2.92 3.41
3.80
4.18
2 hr 1.18 1.47 1.67 1.96
2.19
2.41
3 hr 0.88 1.10 1.25 1.47
1.65
1.82
6 hr 0.55 0.70 0.80 0.95
1.07
1.18
12 hr 0.33 0.42 0.48 0.57
0.64
0.71
24 hr 0.19 0.24 0.28 0.33
0.38
0.42
*SouZCe: Master Drainage Imprpyement & Stormwater Management plan, Vol. 1,
McKim & Creed, June 1988..
l
T-9.21

rW r! Lo ! ® YII.'.'V�;3tr g `."' (._.'�i '"-r 7�'•.et '
25
IZI10
ESTIMATION OF STONE SIZE AND
DIMENSIONS FOR CULVERT APRONS
0 5 10 15 20
D IN FT.
Step 1> Eallrnoll flow vslaclly Va at culvert a
paved channel ouUsl.
Slap 2> for pipe culverts Do Is dlomsler.
For pipe orrh, arch and bow cWvsrls and
paved channel mUsts. D o - A 0. where
A a - crave sectional area Of flow
at oullsl.
For mulllple culverts, use Da N 1.25 a 0 a
of single culvert.
Slop ]> For apron grader al IOE or duper, use
recommendations far noel higher tons
(tones I thru 6)
w
Z
O
N
APRON MATERIAL
LENGTH OF APRON
TO PROTECT
CULVERT
L1
10 PREVENT
SCOUR HOLE
L2
1
Stons Filling (Fine)
3 a D a
/ a 0 a
2
Slone Filling (Light)
3■ 0 a
6 a D 0
Stone Filling (medium)
/■ D o
6 a 0 0
4
Slons Filing (Heavy)
4■ D a
6 a D 0
S
Stone Filling (Heavy)
5 a 0 0
10 s 0 a
6
Slone Filing (heavy)
6 a 0 0
12 a D a
7
Special study required (energy dloyalaa, sliling basin
or lorgar alone site.)
SOURCE BANKS AND CHANNEL LINING PROCEEDURES,
N.Y.D.O.T., DIVISION OF DESIGN AND CONSTRUCTION, 1971
a

:L
0
DETERMINATION OF STONE
DUMPED STONE `CHANNEL
AND REVETMENTS
SIZES FOR
LININGS
Slap 1> Use graph to dalsrmins maximum done &Ira (e.g., for
12 fps - 20' or 550 lbs.)
Slap 2> Use table to dataumins acceptable sit@ rungs for alone
(tor 12 fps It Is 125 — 500 lbs. for 75X of alone, and the
moeimum and minimum range In welghl should be 25-500 [be.)
Note: In determining channel volocllles for alone linings and
revelments, use the following coefficients of roughness:
Diameter Wonnlnq a Win. Thickness
(Inches) 'n of Lining (Inches)
fine .1 0.031 9
Light 6 0.035 12
Medium IJ 0.040 18
Ilsovy 23 0.014 30
Velocity In Feet / Sec.
— 16.000 1
_ la o lo\0
— 5.000 —
rn
I^
M
1000 O
— 500 c
— »o
100
— So
0
t
r
MAX. STONE SIZE FOR RIP RAP
N
SOURCE: BANKS AND CHANNEL LINING PROCEEOURES,
N.Y.DO.T., DIVISION OF DESIGN AND CONS7RUC710N, 1971
Maximum weight of
stone squired
Minimum and manknum ronge
In weight of slonu
Weight tongs of
759 of done&
(Itm)
(Ib 1.)
(lbs )
I50
25 — 150
50 — 150
200
25 — 200
50 — 200
750
25 — 250
50 — 250
400
25 — 400
too — 400
600
25 — 600
ISO — 600
800
75 — 800
200 — 800
1.000
50 — 1.000
250 — 1.000
1,300
50 — 1,300
325 — 1.300
1.600
50 — 1.600
400 — 1.600
2,000
75 — 2.000
600 — 2,000
2,700
100 — 2,700
8001 — 2.700

NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
lu
RALEIGH
STANDARD SPECIFICATIONS
FOR.
ROADS AND STRUCTURES
SECTION 942
RIP RAP MATERIALS
942-1 PLAIN RIP RAP.
Stone for plain rip rap shall consist of field stone or rough unhewn
quarry stone. The stone shall be sound, tough, dense, resistant to the
action of air and water, and suitable in all other respects for the pur-
pose intended. Where broken concrete from demolished structures or
pavement is availahle, it may be used in place of stone provided that
such use mints with the approval of the Engineer. However, the use
of broken concrete which contains reinforcing steel will not be
permitted.
The stone or broken concrete shall be graded to meet the following
requirements:
1. For Class 1 Rip Rap. Stone shall vary in weight from 5 to 200
pounds. At least 30 percent of the total weight of the rip rap
shall be in individual pieces weighing a minimum of 60 pounds
each. Not more than 10 percent of the total weight of the rip rap
may he in individual pieces weighing less than 15 pounds each.
2. For Class 2 Rip Rep. Stone shall vary in weight from 25 to 250
pounds. At least 60 percent of the total weight of the rip rap
shall be in individual pieces weighing a minimum of 100 pounds
each. Not more than 5 percent of the total weight of the rip rap
may be in individual pieces weighing less than 50 pounds each.
942-2 STONE FOR EROSION CONTROL.
The stone shall be of a hard, durable nature and shall range in size
as follows:
Class Size
A 2' - 6'
B 5' - 15'
All stone shall meet the approval of the Engineer. While no specific
gradation is required, the various sizes of stone shall be equally dis-
tributed within the required size range. The size of an individual
stone par.icle will be determined by measuring its long dimensions.

APPLICATION A&K #94263
FOR File Number
ENGINEERING d FACILITIES
i I ! n
Andrew & Kuske i
Inc.
Applicant: Wilmington Developinent Carlpany, Applicant's Agent: Consulting FrlgineerS, Inc. t
Address: 4505 Market Street . Address: 202 North Fifth Avenue
Wilmington, NC 28405
Telephone Number: 910-799-1214
Wilmington, NC 28401
Telephone Number: 910-343-9653
Total Acres of Land Disturbance: 4.0 Ac. Purpose of Development: Sleep Inn Motel
Location and Description of Land Disturbance:
The site is located on Market Street (US 17) near the corner of Market Street (US 17)
and Lennon Drive (SR 1309) in Harnett Tbwnship New Hanover County.
Approximate Start up Date: ASAP Approximate Completion Date: 5/96
STATEMENT OF FINANCIAL RESPONSIBILITY
Land owner(s) of Record Person or firm(s) financially responsible
for the land -disturbing activity
Name: WilmingtOn DeVelOgnent CCmpany,Inc. Name Wilmington Development Company, Inc.
Address: 4505 Market Street Address- 4505 Market Street
Wilmington, NC 28405 Wilmington, NC 28405
Telephone Number: 910-799-1214 Telephone Number- 910-799-1214
Location of deeds) or instrument (s) : CountyNew Hanover Book 926 Page 558
County Book Page
The above information is true and correct to the best of my knowledge and belief and was
provided by me while under oath. (This form must be signed by the financially responsible
person if an individual and by an officer, director, partner, attorney -in -fact, or other
person of authority to execute instruments for the financially responsible person if not
an individual.)
Date: // 9 S Name (Type or Print) Michael L. Prevatte
Title: vice PPresidP t
Signature: