SW8001009_Historical File_20090422

Casmer, Jo
From: Casmer, Jo
Sent: Wednesday, April 22, 2009 9:43 AM
To: [e-mail]
Subject: Smith Creek StorageFacilities Inc
Hey Charlie: David Cox says that a permit fee is not needed — it is being issued as a plan revision, not a
modification. I am putting the check in an envelope to you today so that you may return to your client.
Thanks.
10 Casmer
Administrative Assistant IV
NC Dept. of Environment & Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
Please note email has changed.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

Intracoastal Engineering PLLC
April 16, 2009
NCDENR
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Attn: David Cox
Re: Smith Creek Storage Facility Phase I
SW8 ooioo9
PN 100-014
Dear Mr. Cox,
REC'D APR 1
2009.
Please find enclosed (1) original Stormwater application form (SWU-iol), (1)
copy of application form, (1) stormwater narrative, (1) Fee check ($505.00), and (2) sets
of plans.
Please review for approval and contact us with any questions, comments or additional
information needed.
Sincerely,
Intracoastal Engineering PLLC
Charles D. Cazier, P.E.
91 Pelican Point Rd. Wilmington, NC 28409 [phone]

TMC/TAYLOR CONSTRUCTION, INC. P.O. Box 2657
Wilmington, NC 28401
Phone #: [phone]
Fax #: [phone]
TO: MS. R-HOl`.TDA FIr^.? i
NC DIVISION OF WATER QUALITY
Date: 11/15/04
Project: SMITH CREEK STORAGE FACILITIES, INC. Job # 6768B
SW8001889 MOD
Gentlemen:
We are sending via ❑ Mail Messenger ❑ Overnight
COPIES
SHEET NO.
SHEET
DATE
ITEMS
(SEE LISTED BELOW)
These items are being sent for the purpose checked below:
❑ For Approval ❑ Approved as Submitted
❑ For Job Use ❑ Approved as Noted
❑ To Place Order ❑ Returned for Corrections
❑ To Fabricate ❑ Resubmit Copies for Approval
❑ Quotation ❑ Submit Copies for Distribution
❑ For Your Use
Please -return copies of Drawings, Noting Approval
Remarks:
Check #0922. (NCDENR)
Stormwater Management Permit Application
Stormwater Management Permit Application (Wet Detention Basin Supplement)
2 copies of Site Plan drawing #C1
'WX
Sincerely
ttLOR NSTRUCTION, INC.

I'
I
TAYLOR CONSTRUCTION, INC.
P.O. Box 2657 - Wilmington, NC 28402 • 910-251-1181 • Fax [phone]
Ms. Rhonda Hall
N.C. Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
RE: Smith Creek Storage Facilities, Inc.
SW8001009 Mod
Dear Ms. Hall:
November 12, 2004
RECEIVED
BY: Q6/009/72
Please find enclosed the Application for Modification to SW Permit #SW8001009 Mod. Included are the following:
1. Correct building #2 size.
2. Add building #3 to drawing.
3. Change building area square footage.
4. Change paved area square footage.
If any other information is needed please call our office at [phone]. Thank you in advance for your
consideration in this matter.
Sincerely
TMC-Taylor Construction, Inc.
tJs h J. Gray,
JJGIII/lo
cc: Richard Blacher

�QF VdArF�P Michael F. Easley, Governor
�O G William G. Ross Jr., Secretary
co y North Carolina Department of Environment and Natural Resources
r
©. Alan W. Klimek, P.E.,Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
September 2, 2003
Mr. Rick Blacher
Smith Creek Storage Facilities, Inc.
5633 Market Street
Wilmington, NC 28405
Subject: Stormwater Permit No. SW8 001009 Mod.
Smith Creek Storage Facilicities Phase I
High Density Project
New Hanover County
Dear Mr. Blacher:
The Wilmington Regional Office received a complete, modified Stormwater
Management Permit Application for Smith Creek Storage Facilities Phase I on July
17,2003. Staff review of the plans and specifications has determined that the project,
as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
2H.1000. We are forwarding Permit No. SW8 001009 dated September 2, 2003, for the
construction of the subject project.
This permit shall be effective from the date of issuance until September 2, 2013, and
shall be subject to the conditions and limitations as specified t herein. Please pay
special attention to the Operation and Maintenance requirements in this permit. Failure
to establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Linda Lewis, or me at [phone].
Sincerely,
2:La,t4Q 13.-,e -
41 uz Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:\WQS\STORMWAT\PERMIT\001009.sep03
cc: Jim Honeycutt, P.E.
Tony Roberts, New Hanover County Building Inspections
Beth E. Wetherill, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone] Customer Service V -
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax [phone] RMEN

State Stormwater Management Systems
Permit No. SW8 001009 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Rick Blacher, Smith Creek Storage Facilities, Inc.
Smith Creek Storage Facility, Phase I
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A ;CAC 2H . i 000 khereaner referred to as the "stormwater rules") and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and
considered a part of this permit.
This permit shall be effective from the date of issuance until September 2, 2013, and
shall be subject to the following specified conditions.and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and. volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described on page 3 of this permit, the Project Data Sheet. The
stormwater control has been designed to handle the runoff from 111,929 ft
square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system. A permit
modification must be submitted and approved prior to the construction of
additional built -upon area from outside of the approved drainage area.

Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
State Stormwater Management Systems
Permit No. SWO 001009 Modificati01 1
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Smith Creek Storage Facility Phase I
SW8 001009 Mod.
New Hanover County
Mr. Rick Blacher
Smith Creek Storage Facilities, Inc.
5633 Market Street
Wilmington, NC 28405
Application Date: July 17, 2003
Receiving Stream/River Basin: Spring Branch / Cape Fear
Stream Index Number: CPF17 18-74-63-1
Classification of Water Body:
Drainage Area, Acres:
Onsite, ft
Offsite, ff:
Total Impervious Surfaces, ft2:
Pond Depth, feet:
TSS removal efficiency:
Permanent Pool Elevation, FMSL:
Permitted Surface Area, ft2:
Permitted Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Permitted Forebay Volume, ft3:
"C Sw"
3.64
3.64
0
111,929
6.5
90% (no filter is required)
24.00
6,603@o Permanent Pool
10,159
25.37
1.5""0 pipe (drawdown in 2-5 days)
3,018
3

State Stormwater Management Systems
Permit No. SW8 001009 Modification
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in it's entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date_
activity, name of person performing the work and what actions were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment
system.
6. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are; constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. At least 30 days prior to the sale or lease of any portion of the property, the
permittee shall notify DWQ and provide the name, mailing address and phone
number of the purchaser or leasee. An access/maintenance easement to the
stormwater facilities shall be granted in favor of the permittee if access to the
stormwater facilities will be restricted by the sale or lease of any portion of the
property.
4

State Stormwater Management Systems
Permit No. SW8 001009 Modification
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the.approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
c.. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for
which Sedimentation and Erosion Control Plan approval or a CAMA Major
permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction. If the proposed
BUA exceeds the amount permitted under this permit, a modification to the
permit must be submitted and approved prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
13. The permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all the built -upon is directed into the permitted system.
14. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
15. The permittee must maintain the current permitted drainage area. No additional
runoff from outside of the permitted drainage area boundary may enter the
permitted stormwater facilities without first applying for and receiving a permit
modification.
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation from
the parties involved, and other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and may or may not be
approved. The permittee is responsible for compliance with all permit conditions
until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
5

State Stormwater Management Systems
Permit No. SW8 001009 Modification
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.. -
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.'
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 2nd day of September, 2003.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
2e,024-)a4s 132�
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
N.

State Stormwater Management Systems
Permit No. SW8 001009 Modification
Smith Creek Storage Facility Phase I
Stormwater Permit No. SW8 001009 Modification
New Hanover County
Designer's Certification
1, , as a duly registered
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.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
7

State Stormwater Management Systems
Certification Requirements: Permit No. SW8 001009 Modification
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
AA TI__
provided itted amounts of surface area and/or volume have been
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspections
W

Date
Z —11-
3 71- 31 1 SGv
State of North Carolina
Department of Environment -and Natural -Resources DEC 1 12002
Division of Water Quality BY:
SI'ORMMATER MANAGEMENT PERNUT APPLICATION FORM
This f nn may be phofocopied for use as an original '
L GEllNERALDWORMATION
1. A.piicants name (specify the name of the corporation, individual; etc: who owns the project):
RICK 8 i-A C H Ek — SVYi F-2c( l i+F esi JAC,
2. Pr mt Owner/Signing Officiars name and title (person legally responsible for facility and compliance):
_ �ZICf- 8LACHa2- O n6CL?
3. M..ii ing Address for person listed in item 2.above.
5433 ,4 I ORKET STP EET
C. ty:. w I L m I Ili Tom! State: N C zip: .2 R 4 O S
T<:lePhone Number (:'1) O }- '7 9 9— 5 4 3 3
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
p3.3ns, specifications, letters, operation and maintenance agreements, etc ): AA
SI'O I TH C12EEK STOV-AeE FAG7t�T1eS, Ir�L- - pk 1
5. U cation of Project (street address):
_ SEEV I Ce
%OAD
II 8''
DFF PnigOe.ET
ST12�
C ty: UJ 1 i_ lYl I IJ G
TO N
County.
NEW 14 PYr' O U EP-
6. Directions to project (from nearest major intersection):
17 AV EL tORTH OM MARY-O STZ.Oi , C(OSS 5, IM4 G2eE1(�_ PA Jer- LAJAYG
Tu2rQ LEFT pN1 SE)vIcE F-pA-p-P,-oPM2-Y oN 21!F2r4-r .4caVss F2om
l.UILryiINGT©n! Awro F-)ti'ISF{ES
7. Ut rude. Longitude:. of project
8. Cr:►ntactperson who can answer questions-about-theproject.
N.une: R 1 GC BLA CHOZ- Telephone Number. ( 9 1 v ) -19 9-S 4 3 3
II. PERMiT INFORMATION: _
1. SI- ecify whether project is (check one): New Renewal Modificcation
Form .IM-101 Version 3.99 Page 1 of 4

If i. pp d is Icing submitted as the result of a renewal or modification to an existing permit, list the
ex sting permit number S U)2 ()O I O O q and its issue date (if known) 2 O
3. Sp: -!cif the type vf project eck one):
_Low Density High Density Redevelop General Permit Other
4. Act: dit oral. Project Requirements (check applicable blanks):
__ CAMA Major _Sedimentation/Faosion Control _W401 Permit, _- PDE$ Stormwater
in;ormation on required.state permits can be obtained by contacting the Customer Service Center at
14 71-623-6748.
HL PROJECT INFORMATION
1. In the space provided. below, summarize how stormwaterwZ be treated.. Also.attach a detailed narrative
(ot ie to two pages)-desc�ing stormwater management for the project
WET PorJD
2. Stormwater runoff from this project drains to the CRP E� FEEIR P-. River basin
3. Tc tal Project Area: - (0 t j' acres 4. Project Built Upon Area:
T'oTA L S iTE (D . S 4- A-caeS
5. He>w many drainage areas does the project have?_
6. Complete the following information for each drainage area. If there aremore than two drainage areas in the
pr..4eet, attac:I'sn additional sheet with the information for each area provided in the same format as below.
r PHA507 I r` PHASe ; - FL.TuP-E
n ,
- w
�; .. ,. s': . ,.?. SS��i�."�. ..> ^y...
.1.1-ea .. Qyv.�-4[>1� i4 �' .:> ... •. 's.[:
•F`Ar '=Sw ...?.
Recei% ing Stream Name
(U Q-PN C
SNAKE) B tLAN CH,
Receh ing Stream Class
S Ui
Drains ge Area
1591.55%-
12 (.P q —i U
Existir g Impervious* Area
MIA
N A
PrOP(Y---ed ImpervioueArea
, 577 A CR E S
T=uT U RLE
% Imp ervious* Area (total)
F U. TU R-F—
ZU
On -sit,! Buildings
FuTU
On -sit::! Streets
N 1A
On -site Parking
l= TV R
On -sit:! Sidewalks .
410
FU TO 2E
Other :gin -site
iJ A
F u Tv R
Off -sits
rJ
IA
TotaL• Ill, 9Q9Total:.
' I iWervims area is defined as the built upon area including, but not Knifed to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form ;•. WU-l01 Version 3.99 Page 2 of 4

7. H :.)w was the -off -site impervious -area listed- above derived-? 1�
IV, DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The fc:_howing italicized deed restrictions and protective covenants are required to be recorded for all
subdi-Asions, outparcels and future development prior to the sale of any Tot If lot sizes vary significantly, a
table : isting each lot number, size and the allowable built -upon area for each lot must be provided as an
attacl-ment.
1. T'X following covenants are intended to ensure ongoing compliance with state stormwater management permit
M'mber as- issued by the Division of Water Quality. These covenants may
W t be changed or deleted without the consent of the StatC.
Z. N.) more than square feet of any lot shall be covered by structures or impervious materials.
Ir=;pervious materials include asphalt, gravel, concrete, brick stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. S :rotes shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Bu: It -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
cunstruction.
5. A .I permitted runoff from outparcels or facture development shall bedbrcted into the permitted stormwater control
sa�stem. These connections to the stormwater control system shalt be -per formed in�a manner that maintains the
irlegriiy and performance -if the system as permitted.
By your signature below, you certify that the recorded deed restrictionsand protective covenants for this project
shall:', nclude all the applicable items required above, that the covenants will be binding on all parties and
persots 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 willl be recorded prior to the sale of any lot
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement forms) listed below must be submitted for
each -.iml? specified for this project Contact the Stormwater and General Permits Unit at (919) 733=5083"for the
sta tm. and availability of these formso
Form SWi! 1fl2
Wet Detention Basin Supplement
Form SWU-103
Infiltration Bastin Supplement
Form SWU-104
Low Density Supplement
Form SWU-10 s
Curb Nutlet System Supplement .
Form SWU-106
Off -.Site System Supplement.
Form SWU-107
Underground InfittrationTrench Supplement,
FormSWU--1 '18
Meuse -lover Basin -Supplement -
Form SWI T 109
Innovative Best Management Practice Supplement
Form `;WU-101 Version 3.99 Page 3 of 4-

NL SUBMTTfAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A com.Plete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item_
• Dngmal and one copy of.the .Storcnwater.Management Permit .Application Form
• Die copy of the applicable Supplement Form(s) for each BMP
• ?ermit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of storrnwater treatment/management
• 'Two copies of plans and specifications; including:,
- Development/Project name
- Engineer and fiam.
- Legend
North arrow .
- Scale
- Revision numbers date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, sport elevations, f njsW floor elevations
- Details of roads, drainage, features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans thatnone.exist
- Existing drainage (including off -site), drainage .easements, pipe sizes, runoff .calculations
- Drainage areas delineated,
- Vegetated buffers (where required) -
VII. .4IGENT AUTPfORIZA'TION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf. please complete this section.
Desig. fated. agent (individual or firm): H o y,4 E� Cu.T T
Mailk g Address: P ' o • e)ox 1 so -3co
City:_, W I L—r n ( rCa TO IJ State: N C. zip: QS +0
Phone: ( 9 10 ) 350 -((0 31 Fa)c { q I 0 } 3 S 0 -0(0 31
VUL APPLICkiT'S CERTIFICATION
L (prim or W name of person listed in General Information, tem r)4/�, f6;r
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that d ::e project will be constructed in conformance with the approved plans, that the required deed restrictions
and p=: otective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAt, 2H -1000. '--� % -1-7 i
Signa
Date: �e:)�
Form .:..MU-l0l Version 3 99 Page 4 of 4

Permit No. 00001? , f±0
(to be provided by DW¢)
State of North Carolina
Department of Environment and Natural Resources
Division of Wafer Quality
S i ii34MWr".3 3 ER iV�.2�3NAGEVIE ' i PE1RMf 3 .,,k T uIC.,Ai i iLPN FORM
WET DETENTTON BASIN SUPPLEMENT
This forth may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin End outlet
structure details.
L PROJECT INFORMATION
Project Name: 5 (Y)1 TH GP—C)e:K- S-rORA-G F FA-C,I U T1 eS , 11QC
Contact Person: RICK 8 i_A C-HEP. Phone Number. (`i I o) r7 9 9 -5 4-3 3
For pmjects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation 1 `7. 5 0 ft.
Permanent Pool. Elevation A'% ft.
Temporary Pool Elevation Q5, 3 9 ft.
areas
Permanent Pool Surface Area 03 sq. ft.
Drainage Area 3. (0 Lf ac.
Impervious Area z�. 59 ac.
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAI
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
FomSWU-102 Rev 3.99
`7 a cu. ft.
- _9 cu. ft.
� ®► 3 cu. ft.
.0.94
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage area ratio from DWt) table)
1 . S in. (2 to 5 day temporary pool draw -down requited)
1 in.
90 % (minimum 85% required)
Page l of 4

Footnotes:
I When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct vah.ie for non-
standard table entries.
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed ;� provide
90% TSS removal. The NCDENR BMF manual provides design tables for both 85% TSS removal and 90% TSS renumal.
U. REQUMEID ITEMS CMCEUST
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 Administradve Code
Section: 1.5 A NCAC 2H .1008.
Initial in the space provided to indicate 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. If a requirement has not been met, attach i" stific -tion.
Initials
a. The permanent pool depth is between 3 and ,6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 2096 of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative linter is provided at the outlet (include non -erosive flow
calculations)
i. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (shove detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will: drain the basin for maintenance or an erm-rgency.
�E . WET I}I'iTE? I`JlON BASM OPERATION AND MAINTENANCE ENANCE AGREEWENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
Thu system. (check one) 0 does
This system} (check one) 0 does
�-j oes not incorporate a vegetated filter at the outlet.
`6t aloes not incorporate pretreatment other than a forebay.
Forth SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash acciimulaticn,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow 'vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly t 3
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wet detention basin or stream, etc.).
The measufing device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readilv penetrate into accumulated sediments.
When the permanent pool depth reads % 05- feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads Y7Sfeet in the forebay, the sediment shah be removed.
BASINDIAGRAM.
ffiIl In the blanks)
permanent pool Elevation oZ 4, o O
Sediment L I ��75 I % 2----------- Sediment Removal Elevation 75%
BottomEiI 0 _----- —--- --------------------------- --
Bottom Elevation r% ° 5D J25%
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sedim ;nt
through the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3." Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or pric:.r to any
changes to the system or responsible party.
Print name: Y / C7 '- �-
Title:
Address � .� � �� %r Gi✓� %/fir ` PIL)
Phone:
Signature:
Date: .� a
Note: The legally responsible party should not be a homeowners associationunless mote than 50% of the lots have bet sold and
a resident of the subdivision has been named the president_
I 4Clj� a Notary Public for the State of C
County of 14ajuar __— - , do hereby certify that '?qto,
Tkal:-,
personally appeared before me this � day of o rm La , 90oa , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires,5 �05
Form SWU-]Q2 Rev 3.99 Page 4 of 4

State Stormwater Management Systems
Permit No. SW8 001009 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Rick Blacher, Smith Creek Storage Facilities, Inc.
Smith Creek Storage Facility, Phase I
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in r_.omplinnce with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and
considered a part of this permit,
This permit shall be effective from the date of issuance until September 2, 2013, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described on page 3 of this permit, the Project Data Sheet. The
stormwater control has been designed to handle the runoff from 111,929 ft
square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system. A permit
modification must be submitted and approved prior to the construction of
additional built -upon area from outside of the approved drainage area.
2

v
State Stormwater Management Systems
Permit No. SW8 001009 Modification
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
Drainage Area, 9cres:
Onsite, ft :
Offsite, ft2:
Total Impervious Surfaces, ft2:
Pond Depth, feet:
TSS removal efficiency:
Permanent Pool Elevation, FMSL:
Permitted Surface Area, ft2:
Permitted Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Permitted Forebay Volume, ft3:
Smith Creek Storage Facility Phase I
SW8 001009 Mod.
New Hanover County
Mr. Rick Blacher
Smith Creek Storage Facilities, Inc.
5633 Market Street
Wilmington, NC 28405
July 17, 2003
Spring Branch / Cape Fear
CPF17 18-74-63-1
"C Sw"
3.64
3.64
0
111,929
6.5
90% (no filter is required)
24.00
6,603@Permanent Pool
10,159
25.37
1.5"" 0 pipe (drawdown in 2-5 days)
3,018
3

State Stormwater Management Systems
Permit No. SW8 001009 Modification
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in it's entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to auth-ri`eiai pervvnnel W1 D V V %K. The I VVoI dJ YYIII indicate the date,
activity, name of person performing the work and what actions were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment
system.
6. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has beer. installed in accordance with this ,permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. At least 30 days prior to the sale or lease of any portion of the property, the
permittee shall notify DWQ and provide the name, mailing address and phone
number of the purchaser or leasee. An access/maintenance easement to the
stormwater facilities shall be granted in favor of the permittee if access to the
stormwater facilities will be restricted by the sale or lease of any portion of the
property.
4

State Stormwater Management Systems
Permit No. SW8 001009 Modification
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for
which Sedimentation and Erosion Control Plan approval or a CAMA Major
permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction. If the proposed
BUA exceeds the amount permitted under this permit, a modification to the
permit must be submitted and approved prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
ennetn ir+finn
13. The permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all the built -upon is directed into the permitted system.
14. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
15. The permittee must maintain the current permitted drainage area. No additional
runoff from outside of the permitted drainage area boundary may enter the
permitted stormwater facilities without first applying for and receiving a permit
modification.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation from
the parties involved, and other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and may or may not be
approved. The permittee is responsible for compliance with all permit conditions
until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
5

Dimbage Caicukaons for Smith Ca etc storsee Fadrives
I #i
284925
Asite -= 43560
As to = 6.541
Atotai = Asi
A40W = 6.541
1
Al =5844943560
A1= 3.6375
79179
Alps =
A1paved =1-8"18
�O
Al side := �l043560
A15ide = 0.009
32340435M
Al bidg.=
Al b1dg = 0.742
A1imp:= Alp +Alside
Al = Al — Alimp — AijXdg
Cpm = .30 ...pre-develo ent C
ages ...total area
acres
acres - Phase 1
...total drainage area
acres ..-paved area phase l
acres ....build€ng area phase 1
Al imp = 1.827 acres - total impervimm area el 1. bidgs
phase l
A1011W = 1.058 phase 1
Camp = .95 ...paved area C C -= 1.00 �� ��.liL:l
Al�,� A1imp Al JUL 17 2003
C1p := ��. Al �- C�,p Al � � Al t..
DWQ
C1�,p = 0.77 _. phase 1 composite C (post-deti+eloptnent) PROD # � if(Z/! c;%
i = 710 ...hydraulic length
H 15ft ...height.
L 3).385 ``va'oreuuuy�q��
(H
Tc
7s
128 a'' * QA ��
Z.:. 8824 #=
Tc = 5.41 ...time of concentration a �►
�QINS
,
•• Edna..-elf`.vL.w�� .._
Page I
#ntensky-DuraWnm Fraqusncy Relationships:
Values of G and H*
R G H
10 252 30
50 338 33
R= Return Period
-Source Master Drainage Flan for City of Wilmington
%1/'4%
.0

I
Page Z
T = TC
Time of duration
G10 := 252
H10:= 30
G 01fl
_
110 . H
Tl
1
110 = 7.12 in/hr
G50 = 338
H50 33
150:= 1,150 + Tj
t5o = 8.8 in/hr
Compute runoff rates:
Qpre Cpre-110-(Atotai)
...10 year storm intensity
...50 year storm
Qpm = 13.96 cfs ._.total pre -development runoff from 10 yr. storm
Q1 pm -.= Cpre-110-(Al)
Q11m = 7.77 cfs _phase 1 pre -development runoff from 10 yr. storm
Q110== Clcomp•110-(Al)
011,0 = 19.92 cfs _..phase 1fmst-development discharge rate to pond from 10 yr.
storm
Q150 = Clcomp•150•(Al)
Q150 = 24.63 cfs ...phase 1 post -development discharge rate to pond from 50 yr. storm
Volume of runoff from developed area of site:
P 4.8 in
CN := 76 Curve No.
S := \ CO©00) _ 10 S = 3.158
Rdepth -= P + .8-S Rdepth = 2.372 in. ...runoff depth
R1VO1= Rdepth-(Al)•43560.12 R1yo1= 31.316 cubic feet ...phase 1 runoff volume
Al
TIP := 1.39 Q11 ) .`12) 43560• 6-
0
TIP = 18.85 ...time to peak flow phase 1

Page 3
PRASE 1 POND:
Determine size of pond W thout vegetative filter:
depth := 6.5 ft
A1imp + A1��
IMP% := IMP% = 0.7064
Al
IMP°%o70:= .034
IMP%80:= .040
i := 0..1 xi — vyi
0 IMP%70
EIMP%8Q
V)q := )i
IMP := linterp (vx, vy, IMP%-100)
IMP = 0.034384
DA := (Al) -43560
SAr = (IMP)-DA SAreq = 5448 sq.ft ...Required surface area
slopel := 6 ..-min. slope of shelf
slope2 := 2.5 ...min. slope of pond below shelf
shelf := 2 ft. ...depth of shelf
w := (depth - shelf)-slope2.2 + shelf-slopel -2
w = 46.5 ...minimum width of permanent pool
w := w ft. - width chosen
w = 46.5 ft.
1. 3-w
I = 139.5 ft. ...rain. length of permanent pool
1:= 142 ft. - length chosen
SAprav = I -w SApmv = 6603 ...sq.ft of surface area provided must be : SAr, = 5448 sq.ft.
Det®rmine storage volume required for treatment of first inch of runoff:
C1eomp = 0.769
V := 2-(Al)-43560-Clcomp
V = 10159 cubic feet of storage required

Page 4
Solve for depth "d" to provide required storage:
d .= 1.5 ...guess value
f(d) i w + (1 + 62 )•{w + 6 d} d .„function of d for rectangular pond w/3:1 side slopes
FROM
d := root[(f(d) -• g(d)) , d]
d = 1.37 ft. - depth required to provide required storage for 1 inch with site fully developed
V
Q2day := Q2day = 0.0588 cfs ...Max discharge for 2 day drawdown
2.24.60.60
V
Q5day 5.24.60-60 QSday = 0.0235 cfs ...Max discharge for 5 day drawdown
g := 32.2 Cd := .6 ...orifice coefficient
h � h = 0.685 ft ...avg. head
��y
Aor�ce.
Aorifice = 0.015 Square ft.
5
Cd-(2-g-h).
5
Aonf4e
D :=
4•
•12
D = 1.645 in. - for 2 day drawdowrr
3.14
Q5day = 0.0235 cfs
QSda
Aorifice :=
Aorifiee = 0.006 Square ft.
.5
Cd-(2•g•h)
.5
Aoriftce
D :=
4
12
D = 1.04 in - for 5 day drawdown
3.14
Use 1.5 inch diameter pipe
in routines, chart
Check drawdown time:
Eoinv:= 24 .-elevation of orifice invert
Etop 25.43 .elevation of top of discharge strructure
Do := 1.5 inches - diameter of orifice
Do
2
Eod := Eoinv +
Eod = 24.063 ...elevation of center line of orifice
12

Page 5
(Etop — Eod)
h = h = 0.684 ...avg. head
2
do := 00
12 ft. -diameter of orifice
do 2
Aorifi , 3.14 - 2 A orifice = 0.0123 ...sq. ft.
1
q2 := Cd-Aorifice-(2-g-h) 2 q2 = 0.049 cfs
q2 := q2 -cfs q2 = 0.049 cfs
V = 10159 cubic feet of storage required
3
drawdown := V-ft
q2
drawdown = 2.41 day Must be greater than or equal to 2 days and less than or
equal to 5 days ."�.�.
Determine volume of permanent pool in order to size forebay:
j := 0.. 7 k := 1.. 7
Aj
...area of contour 24.00
...area of contour 23.00
...area of contour 22.00
_.-.area of contour 21.00
...area of contour 20.00
...area of contour 19.00
...area of contour 18.00
...area of contour 17.50
D j : = corresponding depth from contour above
.0-ft1
1 ft1
1 •ftt
140
1-ft1
1 ft1
1 •ftt
5-ftt-
Ak 1 + Ak
Vk:= 2 •Dk ...incremental volume
Vpond :_ Y, V ...total volume equals the sum of the incremental volumes
Vpond = 14726 f? ...total volume in permanent pool
Vrequired :_ .20-Vpond ...forebay volume equals 20% of total pool volume
Vrequired = 2945f? ...cu.ft. required in forebay

Page 6
Determine volume in forebay:
m:=Q..7
n: 1..7
am -
dm -
0.ft2
...area of contour 17.50
0-ft'
6.25-ft2
...area of contour 1&00
5 ft1
56.25•ft
...area of contour 19.00
1-ft1
2
156-25•ft
...area of contour MOO1
1-ft
306.25 ft2
area of contour 21.00
1
1 ft
...area of contour 22.00
506.25-ft
...area of contour 23.00
1-ft 1
1069,50-e
...area of contour 24.00
1-ft1
1836.75•ft2
1 ft1
vn :_ -r an
-dc ...incremental volume
corresponding depth from contour below
VfOrebay'- Y v ...total volume in forebay-equals the sum of the incremental volumes
Vforebay = 3018ft3 ...total volume in forebay must be >= Vrequired = 2945ft3
Check capacity of emergency spillway to pass 50 year peak flow:
L := 18 ft ...Length of weir
H := 2 ft ...Driiving head Cw 3.0 ...Weir coefficient
Q '= CW H 1.5
Q = 29.39 must be =>
Weir capacity
Q15o = 24.63 O.K.
Using a 15" barrel, check velocity at outlet from pond:
0 := 1.25 ft q := 8.03 cfs ...max barrel discharge from routing sheets
n -D2
Apipe :- 4 Apipe = 1.227
Voutlet == Apipe
Voutlet = 7.03 fps
Determine outlet apron dimensions and rlprap size for discharge from pond:
From Figure 8.06.b.1 and Figure 8.06,b.2 choose Zone 2.
La := 6•D La = 7.5 ft - minimum length of apron from figure 8.06b2
W := 3-0 W = 3.75 ft - minimum width of apron from figure 8.06b2
dia := 6 diameter of stone in inches
dmax:= 1.5-dia dmax = 9 max stone diameter
t _ 15 in. min. thickness of apron in inches

Page 7
Determine outlet apron dimensions and riprap size for discharge to pond :
V := 5.1 fps - from pipe sizing chart
D:=2 ft
From Figure 8.06.b.1 and Figure 8.06:b.2 choose Zone 1.
La := 4-D La = 8 ft - minimum length of apron from figure 8.06b2
W 3•D W = 6 ft - minimum width of apron from figure 8.06b2
dia = 6 diameter of stone in inches
dmax = 1.5-dia dmax = 9 max stone diameter
t := 18 in. min. thickness of apron in inches
Check velocity at pipe outlet under entrance drive:
D:=4 ft
headwater:= 35.00 — 26.00 headwater = 9 ft.
headwater
hwd = hwd = 2.25
D
gpipe = 165 cfs - From "Hydraulic Design of Highway Culverts", a 48" tripe with headwater depth of 9'
Using this "How, calculate velocity Vl water exiting pipe:
n -D2
Apipe = 4 Apips = 12.566
Voutlet := ape Voutlet = 13.1 fps
Apipe
Determine outlet apron dimensions and riprap size for entrance drive:
From Figure 8.06.b.1 and Figure 8.06.b.2 choose Zone 3.
La := 8-1) La = 32 ft - minimum length of apron from figure 8.06b2
W 3•1) W = 12 ft - minimum width of apron from figure 8.06b2
dia := 13 diameter of stone in inches
dmax := 1.5-dia dmax = 20 max stone diameter
t 24 in. min. thickness of apron in inches
Now calculate velocities in diversion swale and check channel liner
requirements:
32174
Aswale:= Aswale = 0.739 acres draining to swale
43560
3275
Asweledist := 3275 Aswaledist = 0.075 acres disturbed area draining to swale
43560
qq := Cpm-lqp-AwaW qj = 1.577 ..total flow in channel in cfs from routing chart

Page 8
B := 0 ...bottom width of channel (ft)
M := 3 ...side slopes typical of all ditches
length := 530
fall 11
s .- fall s = 0.021 ...channel slope
length
n = 0.20 ...roughness coeff. for retardance factor "C" (must be consistent with depth of flow)
•n
Zrei := q1Zreq = 1:469 ...Z required (from R.Malcolm)
1.49 •V-s
y := .022 ...depth of flow (ft.) - vary this number until Zav (below) is approx equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A := B-y + M-(y)2 A = 2.55 ..:Cross -sectional area of flow (sq.ft) at depth y
P :_ + 2-y- 1 + M2 P = 5.831 ...Welted perimeter (ft) at depth y
R = P R = 0.437 ...Hydraulic radius (ft.) at depth y
2
Zav = A-(R)3 Zav = 1.469 ...Z available
Now compute velocity at this depth:
2 1
V 1.49 113 .52 V = 0.618 fps
n
V-R = 0.27 Using this value, choose n from Figure 8.05cpage 8.05.7 and adjust n above
until consistent
From Table 8.06a page 8.06A
VP := 4.5 fps - Permissible Velocity for channels lined with specified grass with slopes 0-4.5%
in easily erodible non --plastic soils
Since V<Vo. permanent channel lininci O.K.
Now check velocity in bare soil to determine it a temporary channel liner is required:
n := 0.02 ...roughness coeff. for bare soil from Table 8.05b
Using normal depth procedure, calculate depth of flow:
n
Zreq:= q1 ZrIN = 0.147 ...Z required (from R.Malcolm)
1.49-V s
y = .389 ...depth of flow (it) - vary this number until Zav (below) is approx equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A := B-y + M-(y)2 A = 0.454 ...Crows -sectional area of flow (sq.ft) at depth y

Page 9
P = B + 2-y- 1 + M2
A
R.=-
2
Zav:;.- A-(R)3
R = 0.185
P = 2.46
Zav = 0.147
...Wetted perimeter (ft.) at depth y
...Hydraulic radius (ft.) at depth y
...Z available
Now aomoute velocity at this depth:
2 1
V := ' R 3 s2 V = 3A79 fps
n
From Table 8.05d page 8.05.9:
Vp = 2.5 fps - Permissible Velocity for unprotected soils (fine sand) in channels
Since V>Vo. a temporary channel lining, is required
Compute velocity in swale again assuming a curled wood mat at, the temporary liner:
n 0.035 ...roughness coeff. from Table 8.05e
Using normal depth procedure, calculate depth of flow:
n
Zrel 1 Zril = 0.257 ...Z required (from R.Malcolm)
1.49-�
y = .48 ...depth of flow (ft.) - vary this number until Zav tbelow) is approx equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A := B-y + M-(y)2 A = 0.691 ...Cross -sectional area of flow (sq.ft) at depth y
P := B + 2-y 1 + M2 P = 3.036 ...Wetted perimeter (ft.) at depth y
R = P R = 0.228 ...Hydraulic radius (ft.) at depth y
2
Zav := A-(R) 3 Zav = 0.258 ...Z available
Now compute velocity at this depth:
2 1
V = 1.49 R 3 -s2 V = 2.287 fps
n
Calculate shear stress for this velocity:
Tallow := 1.55 lb per sq.ft allowable shear stress
y := 62.4 ...unit weight of water

Page 10
T := y-y-s
T = 0.622 ...shear stress
Since T<Tallow. temporary channel lining Is O.K.
Check storage behind checkdam:
32174
Aswale = 43560 Aswale = 0.739
Aswaledist --= 3275 3275 Aswaledist = 0.075
43560
S .= Aswaledist• 1800
S = 135 cuA of storage required
acres draining to swale
acres disturbed area draining to swale
a1 — 2-.5.1.3 + 1.5 a1 = 8 sq.ft. - area of trench at checkdam
a2 = 3.25 a2 = 3.25 sq.ft. - area of trench 25' upstream
at + a2
V = 2 -25 V = 140.625 cu.ft_ of storage - O.K.
REFER TO ATTACHED SHEETS FOR ROUTING RESULTS
Note: References to chart nos., table nos., and page nos. refer to Erosion and Sediment Control
Planning and Design Manual unless noted otherwise

Entity Names
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Date: 9/3/2003
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R!C Smith Creek Legal
Storage Facilities, Inc.
Business Corporation Information
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Status:
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Duration:
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Agent Name:
Registered Office
Address:
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Address:
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Address:
Principal Mailing
Address:
0659868
CG rrent-Actl Ve
-if %15%2VV3
Domestic
NC
Perpetual
Blacher; Richard
5633 Market Street
Wilmington NC 28405
5633 Market Street
Wilmington NC 28405
209 Quilon Circle
Wilmington NC 28412
209 Quilon Circle
Wilmington NC 28412
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1 of 2 9/3/2003 8:06 AM

STATE OF NORTH CAROLINA
DEPARTMENT OF THE SECRETARY OF STA
STATEMENT OF CHANGE OF REGISTERED
OFFICE AND/OR REGISTERED AGENT
SOSID: 0659868
Date Filed: 5/19/2003 12:18:00 PM
Elaine F. Marshall
North Carolina Secretary of State
C200313300064
Pursuant to §5513-31 of the General Statutes of North Carolina, the undersigned entity submits the following for the purpose of
changing its registered office and/or registered agent in the State of North Carolina.
INFORMATION CURRENTLY ON FILE
The name of the entity is: Smith Creek Storage Facilities, Inc.
Entity Type: ®Corporation, ElForeign Corporation, [DNonprofit Corporation, ®Foreign Nonprofit Corporation,
-Limitcd Liability Company, [DForeign Limited Liability Company Limited Partnership, []Foreign Limited Partnership,
❑Limited Liability Partnership, Foreign Limited Liability Partnership
The street address and county of the entity's registered office currently on file is:
Number and Street: _ 209 Ouilon Circle
City, State, Zip Code: Wilmington. NC 28412 County: New Hanover
The mailing address If different from the street address of the registered office currently on file is:
The name of the current registered agent is: Richard Blacher
NEW ENFORMAT!ON
1. The street address and County of the new registered office of the entity is:
(complete this item only if the address of the registered office is being changed)
Number and Street: 5633 Market Street
City, State, Zip Code: Wilmington, NC 28405 County: New Hanover
2. The mailing address if different from the street address of the new registered office is:
(complete this item only if the address of the registered office is being changed)
3. The name of the new registered agent and the new agent's consent to appointment appears below:
(complete this item only if the name of the registered agent is being changed)
1ppe or Print Name of New .4gent
* Signature & Title,
4. The address of the entity's registered office and the address of the business office of its registered agent, as changed,
will be identical.
5. This statement will be effective upon filing, unless a date and/or time is specified:
This is the _day of •�a , 20,02
<46✓ r i ids ant-_
Signature
31�ctPf
Type or or Print Name and Title
Notes: Filing fee is $5.00. This document must be sled with the Secretary of State.
" Instead of signing here, the new registered agent may sign a separate written consent to the appointment, which must be attached to this statement.
CORPORATIONS DIVISION P. O. BOX 29622 RALEIGH, NC 27626-0622
Revised January 2002 Form BE-06

HONEYCUTT ENGINEERING CO.
CONSULTING ENGINEERS
610 HIDDEN VALLEY ROAD
WILMINGTON, NC 28409
910-350-0631
July 14, 2003
North Carolina Department
Environment and Natural Resources
Division of Water Quality
ATTN: Linda Lewis
Re: Stormwater Project No. SW8 001009
Smith Creek Storage Facilities, Inc. F
New Hanover County
Dear Linda:
I am addressing your comments as follows:
1. We agree with your suggestion that the orifice draws down the 1" volume in. the 2-5
days so we should change the pond back to its original design. Thanks.
2. All references to phase 2 have been deleted for clarity. The proposed BUA does not
exceed what was assigned on the original permit.
If you have any questions regarding this project, please give us a call.
Sincerely,
'IAZ
Wendy Ric arlson

SMITH CREED STORAGE FACILITIES, INC.
5665 MARKET STREET
REVISED NARRATIVE ON STORMWATER MANAGEMENT
A permit modification is being submitted because the owner decided to make one of the
buildings smaller and change the name of the business to Smith Creek Storage Facilities,
Inc. The impervious areas on the drawing and the application have been changed to
reflect this. The pond has been revised to its original design and we have shown the new
layout. The calculations have been revised to show that the orifice will draw down the 1"
volume in 2-5 days.
RECEIVED
JUL 17 2003
DWQ ,�r,� �%
PROD # �%f0Q1� � `"`-

P. 1
* * * COMMUNICATION RESULT REPORT ( FEB.17.2003
FILE MODE OPTION
721 MEMORY T
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
i
ADDRESS (GROUP)
---------------
9-3500631
5:19PM )
TTI
RESULT
-----------
OK
NCDENR WIRO
PAGE
-------P. 1/1
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
QtWA7'1 Michael F. Easley, Governor
William G. Ross, Jr. Secretary
North QaroliP;ja Depark rent of Environment and Notural p cur es
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
FAX COVER SHEET
Date: February 17, 2003 No. of Pages: I
To: Jim Honeycutt, P.E. From: Linda Lewis
Company: Honeycutt ]engineering Water Quality Section - Stormw►ater
r,AX #: 350-001 FAX # 910J50-2004
Phone # [phone]
DWQ Stormwater Project Number: SW$ 001009
Project Name: Smith Creek Storage Facility
MZSSAVE:
Jim:
Since you have changed the storage elevation, please submit revised sealed calculations to
support this change.
Other than reducing the storage elevation in th pond, I'm not exactly sure why you thought a
permit modification was needed. I think the ea�iest course of action would be to keep the and as
it Was origjr ly proposed, and just show the near layout on a revised plan. As long as the new

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
FAX COVER SHEET
Date: February 17, 2003
To: Jim Honeycutt, P.E.
Company: Honeycutt Engineering
FAX #: [phone]
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
No. of Pages: 1
From: Linda Lewis
Water Quality Section - Stormwater
FAX # [phone]
Phone # [phone]
DWQ Stormwater Project Number: SW8 001009
Project Name: Smith Creek Storage Facility
MESSAGE:
Jim:
Since you have changed the storage elevation, please submit revised sealed calculations to
support this change.
Other than reducing the storage elevation in the pond, I'm not exactly sure why you thought a
permit modification was needed. I think the easiest course of action would be to keep the pond as
it was originally proposed, and just show the new layout on a revised plan. As long as the new
layout is less than or equal to the approved BUA total for the pond and the approved orifice will
draw down the 1" volume in 2-5 days, no modification is needed.
Additionally, I don't understand why you included a second drainage area for Phase II, but are not
showing any built -upon area allotted for it. Again, it is simpler to go ahead and size the pond for
all the current and future built -upon area by assigning a lump sum maximum amount for the
future BUA (you don't have to break it down). That way, when the time comes to develop the
future area, you need only submit a grading and dimension plan demonstrating that the proposed
BUA does not exceed what was assigned in the permit.
It's up to you and the applicant to decide which course of action suits the situation. I'll permit the
project either way.
S:\WQS\STORMWAT\ADDINFO\2003\001009.FEB03
N.l:. uivision of water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax [phone] Customer Service
800-623-7748

Stai,,� of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Division of Water Quality
Mr. Rick Blacher, Owner
5665 Market Street
Wilmington, NC 28405
Dear Mr. Blacher:
A7�1�
lirin,l
A*v`... X,
AM A�iiiiii- EL
NCDEI4R
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
February 13, 2001
Subject: Permit No. SW8 001009
Smith Creek Boat Storage
High Density Stormwater Project
New Hanover County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Smith Creek
Boat Storage on January 17, 2001. Staff review of the plans and specifications has determined that the project, as
proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW8 001009 dated February 13, 2001, for the construction of Smith Creek Boat Storage.
This permit shall be effective from the date of issuance until February 13, 2011, and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance ofthe stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt ofthis permit. This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or
me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/sav: S:\WQS\STORMWAT\PERMIT\001009.FEB
cc: Jim Honeycutt, P.E.
Tony Roberts, New Hanover County Inspections
Scott Vinson
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No. SW8 001009
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS. HEREBY GRANTED TO
Rick Blacher
Smith Creek Boat Storage
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by the Division of Water Quality
and considered a part of this permit.
This permit shall be effective from the date of issuance until February 13, 2011 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as -described on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
120,200 square feet of impervious area.
Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
5. The runoff from all onsite and offsite built -upon area permitted with this project must be directed into the
permitted stormwater control system.
2

L
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream/Index #:
Classification of Water Body:
If Class SA, chloride sampling result
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, ft2:
Buildings, ft2:
Parking, ft2: `
Offsite Area entering Pond, ft2:
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, ft3:
Provided Storage Voluriie, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
State Stormwater Management Systems
Permit No. SW8 001009
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Smith Creek Boat Storage
SW8 001009
New Hanover County
Mr. Rick Blacher, Owner
5665 Market Street
Wilmington, NC 28405
January 17, 2001
Spring Branch / CFR 18-74-63-1
"C Sw"
s: n/a
6.50
24.00
3.64
120,200
49,188
71,012
none, per Engineer
5,944
6,603
9,675
10,620
25.43
1.50 pipe
3

State Stormwater Management Systems
Permit No. SW8 001009
I1. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately.
The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system.
6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification.
If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility.
9. A modification must be permitted prior to any construction. The following items will require a modification
to the permit. The Director may determine that other revisions to the project should require a modification
to the permit: -
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the prof ect area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction.
4 - -

State Stormwater Management Systems
Permit No. SW8 001009
IL . The permittee shall submit final site layout and grading plans for any permitted future areas shown on the
approved plans, prior to construction. If the proposed BUA exceeds the pemitted amount, a modification
to the permit must be submitted and approved prior to construction.
12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
14. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time f mme specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall
provide copies of revised plans and certification in writing to the Director that the changes have been made.
15. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days.
III. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual.
Permit issued this the 13th day of February, 2001.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
--Q�� Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 001009
5

State Stormwater Management Systems
Permit No. SW8 001009
Smith Creek Boat Storaue
Stormwater Permit No. SW8 001009
New Hanover County
Designer's Certification
I, , as a duly registered 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.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Gol

0
State Stormwater Management Systems
Permit No. SW8 001009
Certification Requirements:
_1. The drainage area to the system contains approximately the permitted acreage.
_2. The drainage area to the system contains no more than the permitted amount of built=upon area.
_3 . All the built -upon area associated with the project is graded such that the runoff drains to the system.
_4. The outlet/bypass structure elevations are per the approved plan.
_5. The outlet structure is located per the approved plans.
_6. Trash rack is provided on the outlet/bypass structure.
_7. All slopes are grassed with permanent vegetation.
_8. Vegetated slopes are no steeper than 3:1.
_9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
_10. The permitted amounts of surface area and/or volume have been provided.
_11. Required drawdown devices are correctly sized per the approved plans.
_12. All required design depths are provided.
_13. Al I required parts of the system are provided, such as a vegetated shelf, and a forebay.
_14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector
7

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MMAGEMENT PERMIT APWCATION FORM
This form may be *towpied for use as an or&iwl
I. GENERAL INFORMATION
1- Applicants name (specify the name of the corporation, individual, etc. who owns the project) --
RICK $1-ACHER
2. Print Owner/Signing COicial's name and title (person legally responsible for facility and compliance):
RICK BLACHEP-- OWNER
3. Mailing Address for prerson listed in item 2 above.
50(4 CnARYeT STieeel'
City: W l LM1 N Co Tb N Sate: NC_ ; 2 S SOS
Telephone Number: ( 9 10 ) -] 99 - 54 3 3
4- Project Name (subdivision, facility, or establishment name - should be Consistent with project name on
plans; specifications, letters, operation and maintenance agreements, etc.):
Snn1TH cR.Erl::. BOAT STOaAGE
5. Location of Project (street address):.
SEPWICS IZOAD "S" oF-F MARILET 5 Tf4EE-l"
City: WIl-M�N�v7oN County: NEO tf "OVCR
6 Directions to project (from newt major intersection):
T9A,\1S ,. ND,21l4 ON rAA1t4'Y S-rg.967r, cA css smi7N cjea K PARx.wAV, TuQN
LEFT oo S R\jCE aoab- P2.oPE9TY ON 2-IGH7* AQZM F20M W,L tN6TpN
7. Latihxk- Longitude: of pry
& Contact person who Can answer questions about the project:
Name: RICK 9LA CH M Telephone Number: ( 910 ) -799- S 4 3 3
M PEI Mrr INFORMATION-.
1- Specify whether project is (check one):. ALNew Renewal Modification
Form SWLt lUl version 3,99 Pap 1 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number NIA 1, and. its issue date (if known)
3. Specify the type of project (check one):
Low Density High Density Redevelop General Permit Other
4. Additional. Project Requirements (check applicable blanks):
CA MA. Major v Sedimentation/Erosion Control 404`401 Permit NPDES Stormwater
Information on required slag permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, sumnuu-jze how stortmwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
WE.T PoNO
2.
0
s
Stormwater runoff from this project drains to the CAPE
"Total. Project Area: 3,G4 acres
4.
TOTAL- 51TE (,.5 µ A42ES
How marry drainage areas does the project have? i
FEAR
River basin.
Project. Built upon. Area: ? 9
�-PHA5E 1
6. Complete thefo lowing 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.
r' PH are 1
PHASE Z—FUTV2.E
.: ��
3 ..
Receiving Stream Name
sepu r4 r 13 ZAN CH
SPR-1 tJG BP -A PJC14
Receiving Stream Class
C S UJ
C S W
Drainage. Area
I Sir, 449
12 (n 4 7 Go
Existin Impers our' Area
^J/A
N/A
Proposed ' Area
1 Z, % 9 q
F V V E
9'o Impervioue Am (total)
7
F U T U A E
On-siteBuildings L{ 91 1199 FUTv2E
On site Streets N/ rU Tog e
On-siteParking i 1 01 Z
On site Sidewalks ri /A
Other on -site n1/A
Off -site: / A
Total: 12 2 -799 — /,Zv) a 8o
ImMvious ow is defied as dw bOt area includin& but not h areas,
side uft, gnwd areas, etc
Form SWU-I01 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? N JA
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
attactuneent.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality. T%se covenants may
not be changed or deleted without the consent of the State.
2. No more than square feet of arty lot shalt be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, boldly stone, slate or similar material but do not include wood
dedring or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide drimuny crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runqfffrwn outparcels or future development shall be directed into the permitter) stornivxter control
system. Thew connections to the stormunte: control system shall be performed in a mo men that maintains the
integrity and performance of the system as permitted.
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
persona; 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 sate of any lot.
V. SUPPLE M[ENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specked for this project. Contact the Stormwater and General Permits Unit at (919) 733-SM for the
status and availability of these forms.
Form SWU-10Z
Wet Detention. Basin Supplement
Form SWU-103
lnfiitration 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
Nam River Basin Supplement
Form SWU-109
innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

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.
1. Please indicate that you have provided provided next to each item. the fallowing required information by initialing in the space
Original and one copy of the Stormwater Management Permit Application Form
One copy of the applicable Supplement Form(s) for each BMP
o Permit application processing fee of $420 (payable to NCDENR)
Detailed narrative description of stormwater treatment/management
Two copies of plans and specifications, including:
- Development/Project name
- Engineer 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)
VIL AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): HONEY CV T T E N 6 I )J E E R.) N G cJ0 Al p,0 N Y
Mailing Address: P.O. 8ox 1503 (p
City: W I l,M I tJ GO TO N State: N. C. Zip: Z 9 40
Phone: ( 910 ) 3 S O- O(031 Fax: (_ 910 ) 50 -0(0 31
VUL APPLICANT'S CERTIFICATION
L (print or type name of person listed in General Information, item 2)
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:G� d0
Form SWU-101 Version 3.99 Page 4 of 4

Permit No. W / 0 ci 9
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER. MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT !NFOR1',4A710N
Project Name: SrY 1 I TH C REEK- BOAT S TOaAG
Contact Person: R 1 CK B l-ACH E R Phone Number: (91p ) -19 cl y 3 3
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation 17, 5 v ft.
Permanent Pool Elevation 2 4, 00 ft.
Temporary Pool Elevation 25. 43 ft.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area G (V ®'3 sq. ft. (water surface area at the orifice elevation)
Drainage Area 3.6 4 ac. (on -site and off -site drainage to the basin)
Impervious Area 2.1(y ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume I y . 7 26 cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume 10 (v (a 7 cu. ft. (volume detained above the permanent pool)
Forebay Volume �-�-�'yl cu.
ft. (approximately �i2.,}0% of tottgaj}l volume)
5Ary
_..310 l I- V 1 0"'S per' W c i ` wol-7et„1ry+1 ;n ��/N w recU o-,
Other parameters
SA/DAI
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
o= o 375
1.5 in.
I in.
qO %
(surface area to drainage area ratio from DWQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required)
Form SWU-102 Rev 3.99
Page i of 4

Foote
When using the Division SAIDA tables, the correct SAlDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
11. IVQI3MED ITEMS CIHECBMIST
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 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. If a requirement has not been net, attach justification.
. The permanent pool depth is between 3 and.ff feet (required minimum of 3 feet).
. The forebay volume is approximately equal to 20% of the basin volume.
The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
/►/ e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during constriction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
I. WET �ETENjjON BASIN OPERATION AND MAUR_MNAI-3CE AGREEMENTJL
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does
This system (check one) 0 sloes
�oesnot
incorporate a vegetated Miter at the nutlet.
not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads _ feet in the I be removed.
When the permanent pool depth reads feet in the removed.
BASIN DUGR
f fill in the blank
© Permanent Pool Elevation
Sediment Re oval El. �.0'� 75
--------------- Sediment Removal Elevation / q, / Z 75%
Bottom Ele ation /7 Sy -- ,- % -------------------------------------------- ----
Bottom Elevation 25%
FOR'EBAY MAIN PQ2N D
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
Form SWU-1o2 Rev 3.99 Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
j
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
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
.v
Address:
Date: �1�i; X;-- ` -/z 220
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.
a Notary Public for the State of
D.
County of PC,) nQYPP-- , do hereby certify that
personally appeared before me this day of e:Lem / 6R— , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires _
Farm SWU-lag Rev 3.99 Page 4 of 4

State Stormwater Management Systems
Permit No. SW8 001009
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Rick Blacher
Smith Creek Boat Storage
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by the Division of Water Quality
and considered a part of this permit.
This permit shall be effective from the date of issuance until February 13, 2011 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
120,200 square feet of impervious area.
Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
The runoff from all ofsite and offsite built -upon area permitted with this project must be directed into the
permitted stormwater control system.
P)

State Stormwater Management Systems
Permit No. SW8 001009
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Smith Creek Boat Storage
Permit Number:
SW8 001009
Location:
New Hanover County
Applicant:
Mr. Rick Blacher, Owner
Mailing Address:
5665 Market Street
Wilmington, NC 28405
Application Date:
January 17, 2001
Name of Receiving Stream/Index #:
Spring Branch / CFR 18-74-63-1
Classification of Water Body:
"C Sw"
If Class SA, chloride sampling results:
n/a
Pond Depth, feet:
6.50
Permanent Pool Elevation, FMSL:
24.00
Drainage Area, acres:
3.64
Total Impervious Surfaces, ft2:
120,200
Buildings, ft2:
49,188
Parking, ft2:
71,012
Offsite Area entering Pond, ft2:
none, per Engineer
Required Surface Area, ft2:
5,944
Provided Surface Area, ft2:
6,603
Required Storage Volume, ft3:
9,675
Provided Storage Volume, ft3:
10,620
Temporary Storage Elevation, FMSL:
25.43
Controlling Orifice:
1.50 pipe
3

State Stormwater Management Systems
Permit No. SW8 001009
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minlmurr. and any eroded areas of the systemwlii be repaired
immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system
6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification.
8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility.
9. A modification must be permitted prior to any construction. The following items will require a modification
to the permit. The Director may determine that other revisions to the project should require a modification
to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the proj ect area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction.
rd

I
State Stormwater Management Systems
Permit No. SW8 001009
11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the
approved plans, prior to construction. If the proposed BUA exceeds the pemitted amount, a modification
to the permit must be submitted and approved prior to construction.
12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities rill be restricted by the sale
of any portion of the property.
13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
14. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall
provide copies of revised plans and certification in writing to the Director that the changes have been made.
15. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual.
Permit issued this the 13th day of February, 2001.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
r' , ice n p ' _
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 001009
5

TOTAL AREA
PARK I NG LOT,
'OR
TOTAL TOTAL INTERIOR INTER[ /-,DISTURBED
TOTAL _D ISTURBED BUILDING, 1 �',APERV I OUS LANDSCAPING, PARK I NG 0, AREA. DISTUR8ED
0
AREA AREA. AREA PAVED AREAS AREA 'CURB', 8, DR I VE LANDSCAP 11 NG LIMITS ZONED R- 10 AREA TEMPORARY CHECK,
f SQ., rT,) �8Q. _f
�SQ� fT, L Ft. L,IMITS
DAM IN SWALE-\
(PROP. LINE)
:SITE
ZONED 1-1 (PROP. LINE)
TOTAL S- 1 TE 'SHOWN 284, 925 15,5,562 49,188 71,012 122,799 77,885 6,231 REQUIRED INV. 22-00 OUTLET STRUCTURE
(6"54 ACRES\ 6,266 SHOWNI, SEE DETAIL 5 S I LT FENCE SILT FENCE
SEE DETAIL 4 (PROP. LINE) EDGE OF
THIS SHT.- /(PROP. LINE) g
H� S SHT.
PAVEMENT
wommAT I ON PROVIDED BY:
-7
TOPOGRAPHICSURVEY I
L
STOCKS LA11 YEYING, P.C. FRONT: 35' 30� FT. WETLANDS
41)�SUR 6 SQ.r
EXIST,
-0
REG. LAND SURVEYOR S, I DECz t;
36" RCP NOT\,�L__BEF D 1 STURBED 9-
N C,_ REG. NO� L 747
REAR A8UTTiNG,RESlDEN 29 z
Vass
TIAL: 52,122' INV. 25.58, 5 ---------
.0
9.30 w
(OWNER WILL -OBTAIN VARIANCE- PROPERTY ABUTTING IS NOT
ZONING',B-2
SUITABLE FOR BUILDING). >
0
ELEV, 19.00
BOAT STORAGE FACILITY-
0
uj
vEn-m-,lbs
L' EV. 20, cl 0 313
RUN ALON z
0
`-�El EV
INDUSTRfAL OR MANUFACTURING OR WAREHOUSE- G 22. 00
1/2 BOTTOM 1 'PACE$ PER EACH 2,ON SHIFT OF SILT INV�. 24.00� w
(TYP
DITCH FENCE DF-TA-tt 5
1.3REATEST EM 50% OF THE REQUIRED SETBACK 26.11' ELEV
lPLQYMENT,.0NE,,SPACE PER EACH 24.00
rE_-LEV. 25 43 TH I S SHT. 00
MANAGER,IAL PERSONNEL, 1 VISITOR SPACE (OMER WILL OBTAIN VARIANCE)
FOR EACH 10,MANAGERIAL PERSONNEL AND 1 SPACE ELEV� 27.50 w (5
OVERFLOW SPH
FOR EACH VEHI',OLE'USED FOR BUSINESS. DEWEY BROS. CH-BN-1
L AREA
FRAME & GRATE OR EQUAL T F
THERE WILL BE ONE EMPLOY E ONE SPACE + ONE HC SPCE SEE DEtAIL 3 LIMITS
DIS
OF
TOP ELEV. 25. 43' TURBt
MITS
r
-ATCH BA 00
8-'5 .0P LINE) CATI N
-.--rH.l S HT X PAVEMENT
(EDGE OF DITCH) 31 L IFT. 2 4 RC
TW TOTAL SPACES REQUIRED, P
Ll
SIN 1-)�� QATow-ii
I Nru ­70P 29. 00
LEGQ_
INV. 24�95 INV. 24.16
DEWEY BROS. CH-QNI
,I- NTS
!-(9-,00 FI N,I SH GRADE FRAME GRATE .-OR-EQUAL .,qAT-E----0R EQU,
Ov,
00 .70
INV. 24.00'
E
4" PVC 3 GRADE
PLACE---'
ED (SQ. FT. N TH SIZE INDICA
:1/00
97 TREES REQUIRED (15 PER ACRE) 30.70
TREES WILL:. -BE CREPE'MYRTLES AND BRADFORD PEARS
A
-EDG
E OF
RCP OUTLET 10
393, SHRUBS REQUIRED >< 5 00
3
PAVE
L BE MONDOGRASS
SHRUBS:�:WIL
TOP OF DITCH
'��CAP WITH 1�5!' ITYP.
DR I LLED HOI E FROM
Xr, MAX, SLOPE 021
ES� .70
30.00 29,60
r
S] TE LIGHTING ------- 00
DIVERSION SWALE
ELECTRICAL SERVICE
I LT, FEN
3,3.00
WATER SERVICE ',�>� - - - ----- GRAI-i
Al�� s
7
WRAP 4" PVC WITH H E DISTURBED
1 133 00 AREA
-IMITS
--DI RBED
L
RYE
-LINE) I C�'� X �Tlf; Z
A -PRCP-�­
LN-OTES:
SfT MI
60
_0
x
WETLANDS IMITS 'N
IE AND
IS ESTABLISHED ON THE
NS R7-8c A�Q R7-8d
G i�AT_ AUG.. 15, DEC. '30
1. INSTALL HANDICAPPED:PARKI,NG SIG DR APPLY. 2000 LB/AC�E GROUND
E E TIIE OF DIT% 34.00
�EDPE
HANDICAPPED PARKING SPACE SHOWNI BOTTOMI OF 0
30,2 FOL
0,5
��; �l � �4 -,
I I I , Ij L'B/ACRE TO 'l 0-10 FERTI.LIZER
2. PARKING LOT LANDSCAP[NG TO BE CURBED OR OTHERWISE PHYSICALLY 'PROTECTED 34. On 33-- -AND 1000
D RLL ESTONE
bo
I , , �LQhj_ APPLY 4000 LB
/ACRE STRAW, ANCHOR STRAW WITH
INSTRUCTION TRAILER ON SITE.
'7 LI P�H�ARG�E IRUCTURE
3. THERE W I L_ BE NO 0 252' Fmw
30 ASPHALT NETTING, OR A MULCH -ANCHORING TOOL�
EDGE OF
SQ
IE -0, 4. LANDS EX I ST, 0 JS 1 . : -
PAVEMEkIl-'
CTSACl<
OPI:'S 1 TE WATER'ENTES THIS, SITE c
RYE
34,70
5''F om
_j5, 00
(TY
r DEC� 1 APR 15
PORTABLE PUMP WILL BE PROVIDED TOIDRAIN THE BASIN IN AN EMERGENCY. TOP .
�T.
... .... -OLLOW SOIL TESTS, OR APPLY, �000 LIB/ACRE
111, �MEN�T� P
GROUND
1,33 LB,./L.FT,
STEEL. OR
AGRICULTURAL� LIMESTONE AND 750 LB/ACRE' 10
STRAW. ANCHOR STRAW W I TH
8' MAX. WOOD POST 3150 iL/ Ol 4 ACRE W
, OR A MULCH ANCHORING TOOL.
WIRE FENCING
-Fil TER FABRIC
36 0 -QRf-, GERMAN. MILLET 40 LB/ACRE
< ...... 70 DISTURBED,
Mft 14 GA.
L 5, iu- APR. 15 AUG. 15
'ONED 2 a:
_s I AREA
W/MESH SPACING
:FOLLOW SOIL
w
LIMITS
6 MAX� 36,
I
W
D I STURBED SLA MQLL_LI� APPLY 40
DEEP x WIDE RENCH 4- w
GRADE AR F
A
R A MULCH ANCHORING TOOL.
LIMITS
N
1A �AN
(EDGE.OF DI H
18" MIM ZONED
\\-GRAVEL aEE0i_lNG_Y_JjlU_RE.L PENSACOLA BAHIAGRASS
M E 10 LB/ACRE
M
9L9YA_lj0_N
-5
APR. I.- JULY
5-EEQJNG TcS
z 50 w
own
3R, 50
DA VE A�D�MENTS�. POLI OW SO I L TESTS OR APPLY 3000 LB/ACRE GROUND
AGRICULTURAL LIMESTONE AND 50OLB/ACRE 10-10-10 FERTIL.IZER
1� SET POSTS AND EXCAVATE A 8" X 4" TRENCH UPSLOPE ALONG THE LINE OF POSTS�
STRAW WITH
IV CH APPLY 4000 LBACRE STRAW. ANCHOR
�A STAPLE OR WIRE THE FENCING TO THE POSTS, EXTEND FENCING lNTO TRENCH. SWALE TO DIVERT. Fam w
ASPHAII, NETTING, OR A MULCH ANCHORING TOO
OFFSITE WATER
3, ATTACH THE Fit -TER FABRIC TO THE WIRE� FENCE AND EXTEND 1-1 INTO THE TRENCH.
E __V_l% NT.
36.50
I [R�- PENSACOLA BAHIAGRASS
�X
1 62 50 LB/ICRE
�Lo
AB �4
4, BACK-l' L AND COMPACT THE GRAVEL IN THE TRENCH. F TER F R
0,LB/A
FESCUE
TRA S T R E G T H FIL E R FABRIC WITH 6' POST SPACING DOES NOT EG"! WRE CRE
8
5�EX R TALL,r
I 40 l_E3/Ar;RL-'
FR-aNl
TOP 05* D I TCH
co
MESH SUPPOR T FENCE., STAPLE OR WIRE THE Fit TER FABRIC DIRECTLY T POST Cryp. _7S OR APPI Y _700
IL -ES
FOLLOW SO L
A�PNAI
CRE
3450 F
D&
NTS EROS ON CONTROL t ? STRAW
ETLANDS' 0 LA
VF FNCP, _U, APPI Y 4000 LB/ACRE STRAW, ANCHOR WITH
r 62" AREA
ALON
c
w TE 23
OF "otl/
B 0 T10 LIMITS
I LAYER, OF
mc) x �TCH (TYP.) R&I, I O
XLj D1 //A .50 (PROP. LINE)
LIMITS
7 7: _j_
(EDGE OF, DITCH)
'SILT
< FILTER FABRIC
FENCE/
ToRml �ATE,
0 _TE I- =8 ROOF'DRAINAGE
SEP ETA 1 L
r S BLDG.
INTROL GEN !kL _NOTES�
EROS I ON',�
'TO AND OFFICE
BE ROUTED TO POND.
3650,eo. 4 "\X24
AN
ONS TO AVOID THE
THE�OWNER SEE, MAIN AREA VIA A BUILDING SEVER L
T I ING OF ST REAMS, LAKES SWAMPS,,OR OTHER WATER COURSES DUE TO THE LIMITS OFF�-�E F.F.
D-1-STURBED
AREA
-CONSTRUCTION OF.THIS PROJECT. 1B TRENCHES SHALL
x (PROP. LINE)
CREST ELEV.- LIMITS
ALL R6 25'
THE OWNER.SHALL MAINTAI,N ALL EROSION CONTROL MEASUR E
1931
THAT THEY FUNCTION AS INTENDED UNTIL THEIR USE IS NO LONGER 'WARRANTED. AT THAT TIME, ALL
co Z)
STITATION OF L DEVICES SHALL BE REMOVED AS TO CAUSE NO BON
IS'0R,ANY ADJACENT,PROPERTY.
S'TREAM
L L
d5o
6"
)LF -1 D !0
S �MLCL'
1.9� �IR O�
ml
N. 15" THICK
§KgLl 0 N
2:1
1�: OBTAIN EROSION�CONTROL PLAN APPROVAL,
'HIS, DWG. AT 10CA 10N.SHOWN ON DRAWING. 0
2, PROTECT CONSTRU ER DETAIL APPROV
SILT FENCE AT LOCATIONS SHOWN ON TH T S W T
3. INSTALL DRA 4 NG. + DETA H 65
30' V�F �LQ �W I �RD �A I �L NORTH CAROUNA ENVIRO-
4. 1 NSTALL DIVER SIbN,,SWALE,AiGNG'EASTERN PROPERTY LINE. (3D
DISTURSEDL\' MANAGEMENT COMMISSION.
5. 1 NSTAL CHECK DAM lN DI'VERSION SWALE. Cc
AREA DIVISION OF WATER QUALffT
IN DlVERSION SWAI E�
,I NSTA' L TEMPORARY LINMOF CURLED WOOD MA
L I Mll TS
AREA
7. CONSTRUCT STORM:,W TER DETENT I ON,'�BIAS IIN. . ..... -- -__ --
�A LIMITS Date
8. GRADE SITE AS ... ...... .
OW S.
stormwater pormu (D
9. SEED: DITCHES'WIT�HIN_15. WORKING -DAYS' OF COMPLETION OF GRADING, 40
L
10 SEE,I-AND, -MULCH DENUDED,AREAS WITHIN.30 DAYS AFTER FINISHED 'GRADES 40 LISHED, EXCAVAT'ION COMPLETED OR WORK IS'SUSPr_NDED
FOR AN EXT.-NDED' PERIOD, Or T I -ME.,
LLJ
11., MAINTAIN,L N'CONTROL MEASURE 'PERMANENT GROUND COVER HAS
ROS,10, -S UNT'l I-
SEEN ES_r-Ak. I SHED', SEE MAINEANCE PLAN BELOW. 50' IWIN
, TEMPORARY EROS,ION CONTROL MEASURES AND' -STABILIZE
R Ea
ING I DAY$. 'IV SEE DETAIL THIS SHT.
IVO. 4 S70 4F
IHOSE AREAS WITHIIN 5VORK
LQ o o
x 0
w
PLAN
SM:
1. Al I e'ros ion and sediment c,ontrol.proctices ill be checked for stability and.operation
25, OR 41119iH
n eek.
y w , every rnoff�proiduclng fainfoll but.in o cose less than once (�ve Any EXISTIM6
cctices as des i gned. ROAD
ne "e, I be mcide immedlotely to m WA Y
-0 Lo
YELL ORADED RI-P RAP BEDD,
I eded GRADED >
d STONE SIZE 13"
uj
d S
2 TONESIZE
into the 8treet will be TE ZE
struction �-entr_.cnc' be periodically topdrssed with and dditiono 2 inches of 50
All con
0"' MAX.. S
�#4 s t cne� to mo, depth. Any sediment that is tracked
Intoin prope
0,
ei ved. 4
im 20' 0 40' 8 c 01 0
aAIV
1-7
UJ
e remove p wh city,hos been
3., Sediment'will b
50' 4114/1/v
'motely 50% f i I I ed.. 'Gravel 'will be cleaned o� replaced when the sediment pool no CL
opprox operly.
0
GPAPHIC SCALE Z'
nt will t�e removed fr om behind the '§ediment fence when it becomes 0.5,feet deep at 4. Se d ii�ie
the fence. Th e, sediment fence will be repaired as necessary to mclinta
< ;<
CROSS SEC ION
Ali' :see- ded s ll be fertilized, reseeded as necessary, mulched.occording to
specific,ations in the v a us,,densf, vegetative.cover.
DRAWN' BY:
M?U�CPO�IV �NT�RAIV�C
WJR
NTS o! E CHECKED B Y:
17 WE
ES
1� IN A- VVELL-DEF'l NED CHANNEL
_AN JRH
TOP OF EARTH AIE I R 424. 00 F�Ahl 'EXTEND THE,APRO� UP THE
NNEL
S 39' -6 1. IN A WELL-DEF I Nl�_[) CHAI CHANNEL BANKS TO AN
T F 3 MAX. N ABOVE THE DATF.
TOP' OF BANK 27.500 (M,IN,) ELEVATION OF 6"
MAX I MW TA I LWATER btPTH�
ELEV. 25.43 CHNNEL BANKS TO AN
1" WATER STORAGE 3 MA X. I" WA:EER STOI AGE_ELEV 25,43
PERM, 'vVALE_LR_SQIF8LFE 1_��1-24 A ELEVATION OF 6" ASOVE,THE
TL9�4 _V11A T E R C )01 .;N,,OR TO THE TOP OF THE BANK
__$tJ FACE �L �L�4 9/22/00
'00
Ml CHEVER I S LESS.
f
6 JOR TO THE TOP OPTHE BANK,
6
!
M 1, CHEVER IS LESS,
MAX.
ELEV. '7.50
JOB NUMBER:
2 ��-2
-0
-010 127 00 004
6;
---- ------
4
142'
7'�
DWG. NO.
-ER FABRIC'
ltT
'T -WELL F I N�D
SQ� FT.) SQ� FT., SQ., FT�
-7
F WE IDS
T TL N
D 'STURBED
�ONQ 1) QaQ R R OND I U Fr
EFINED
W
MW4 -1 p 6,
SC
SCA
ALE 1 20 c 1
NT
%%moo

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
Project 00-004
284925
A site A site ' 6.541 acres ...total area
43560
A total = A site
A total = 6.541
Al = 158449
Al = 3.6375
43660
A2 = 126476
A2 = 2.9035
43560
Al '71012-
Al = 1.63
paved
43560
Paved
acres
acres - Phase 1
acres - Phase 2
Al side 0 Al side = 0 acres
4 0
49188
Al bidg = Al bidg = 1.129
43560
Al imp := Al paved + Al side
Al other := Al Al imp - Al bidg
C pre :_ .30 ... pre -development C
C imp :_ .95 ...paved area C
...total drainage area
acres _paved area phase 1
... sidewalk areas phase 1
acres ....building area phase 1
Page 1
9/12/00
Revised 1/04/01
DECEIVE
a
JAN 11 2001
DWO
PRDJ #
Al imp = 1.63 acres - total impervious area excl. bldgs
phase 1
Al other = 0.878 phase 1
�? ^ C'
C bidg : - 1.00
Al other r C Al imp + C Al bid
C1 g_ 9524
comp = C pre' Al imp' Al bidg' Al
J.g, ll a
C1 comp 0.81 ... phase 1 composite C (post -development) �± ^��c�'°•°• �� am��
+ as€6
A2 paved .5•A2 A2 paved = 1.452 acres ...paved area phase 2 °
A2 side 0 A2 side = 0 acres ... sidewalk areas phase 2
A2 bldg := •3•A2 A2 bidg = 0.871 acres ....building area phase 2
A2 imp - A2 paved + A2 side A2 imp = 1.452 acres - total impervious area excl. bldgs phase 2
A2 other : = A2 - A2 imp - A2 bidg A2 other ` 0.581 phase 2
A2 other P ( 2 g A2 bidg
C2 comp : = C pre' A2 + C !m ' ` J + C b!d A2
C2 comp = 0.83 ... phase 2 composite C (post -development)
L := 710 ft ...hydraulic length
P. e

M
N
H := 15 ft
3
.385
L
(_�
H
128
T c = 5.41
time of concentration
Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
... height
Intensity -Duration -Frequency Relationships:
Values of G and H*
R G H
10 252 30
50 338 33
R= Return Period
*Source: Master Drainage Plan for City of Wilmington
T := T c Time of duration
G 10 := 252
H 10 := 30 /a
G Ah
1 10 = - 1 10 = 7.12 in/hr
T 10+T�
G 50 : = 338 H 50 33
1:= G50150=8.8
H
50 T
Compute runoff rates:
Q pre - C pre' 1 10. (A total
Q pre ' 13.96 cfs
01 pre C pre .1 10-(AI)
41 pre = 7.77 cfs
Q2 pre C pre' 1 10- (A2 )
Q2 pre = 6.2 cfs
01 10 C1 comp'I 10'(A1)
in/hr
...10 year storm intensity
..50 year storm
.total pre -development runoff from 10 yr. storm
.phase 1 pre -development runoff from 10 yr, storm
.phase 2 pre -development runoff from 10 yr. storm
Q1 10 = 20.93 cfs ...phase 1 post -development discharge rate to pond from 10 yr.
storm
Q1 50 C1 comp'I 50'(A1)
01 50 = 25.88 cfs ...phase 1 post -development discharge rate to pond from s0 yr. storm
Page 2

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
Q2 10 : = C2 comp' 110' (A2)
Q2 10 = 17.25 cfs ...phase 1 post -development discharge rate to pond from 10 yr.
storm
Q2 50 : = C2 comp' 150' (A2)
Q2 50 = 21.33 cfs ...phase 1 post -development discharge rate to pond from 50 yr. storm
Volume of runoff from developed area of site:
P 4.8 in
CN ;= 76 Curve No.
R d(P - 0.2.S )2 R = 2.372 in. ...runoff depth
epth �= p + .8•S depth p
R1 Vol:;::: R depth -(Al )•43560.12 R1 vol = 31316 cubic feet ...phase 1 runoff volume
T1 -_ R depth' (A1) 1 43560. 1
p 1.39 (Q1 10� (12) 60
T1 p = 17.94 ...time to peak flow phase 1
R2 vol = R depth' (A2).43560. 2 R2 vol = 24997 cubic feet ...phase 2 runoff volume
T2 p : = R depth' () 1.43560 1 T2 p = 17.37 ...time to peak flow phase 1
1.39• (Q2 10) 12 60
PHASE 1 POND:
Determine size of pond without vegetative filter:
depth : = 6.5 ft
IMP% Al imp + Al bldg IMP% = 0.7586
Al
IMP% 70 .034
IMP% 80 ; _ .040
is=0..1 X;;=
70 IMP% 70
� iMP% 80
vX1 : = Xi
IMP linterp(vx, vy, IMP% -100)
IMP = 0.037516
Page 3

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
DA := (A1),43560
SA req := (IMP) - DA SA req = 5944 sq.ft.
slope 1 := 6
...min. slope of shelf
slope 2 ;= 2.5
...min. slope of pond below shelf
shelf := 2
ft. ...depth of shelf
w : = ( depth
shelf) • Slope 2. 2 + shelf. slope 1.2
w = 46.5
...minimum width of permanent pool
w : = w ft.
- width chosen
w = 46.5
ft.
1 := 3•w
1 = 139.5
ft. ...min. length of permanent pool
1 : = 142
ft. - length chosen
.Required surface area
SA prov = 1•w SA prov = 6603 ...sq.ft. of surface area provided must be *A req = 5944 sq.ft.
Determine storage volume required for treatment of first inch of runoff.-
C1 comp = 0.809
V := 12 (A1)•43560•C1 comp
V = 10677 cubic feet of storage required
Solve for depth "d" to provide required storage:
d := 1.6 ...guess value
f(d) 1•w+ (I + 6-d)•(w+ 6-d) d
2
g(d) := V
d := root((f(d) - g(d)),d)
..function of d for rectangular pond w/3:1 side slopes
d = 1.43 ft. - depth required to provide required storage for 1 inch with site fully developed
Q 2day := 2 24 60 60 Q 2day = 0.0618 cfs ...Max discharge for 2 day drawdown
V
Q 5day 5.24.60 60 Q 5day ` 0.0247 cfs ...Max discharge for 5 day drawdown
g : = 32.2 C d : = .6 ...orifice coefficient
Page 4

Drainage Calculations for
Smith Creek Boat Storage
Page 5
Market St.
Wilmington, NC
h := d h = 0.717 ft ...avg. head
2
A orifice C 2day A orifice = 0.015 Square ft.
C d•(2•g•h).5
.5
D : = (4-- A orifice • 12 D = 1.668
3.14 /
Q 5day = 0.0247 cfs
Q
in. - for 2 day drawdown
A orifice = 50ay 5 A orifice = 6.064.10 Square ft.
Cd•(2•g•h)'
.5
D (4- A orifice .12 D = 1.055
3.14
Use 1.5 inch diameter pipe in routing chart
in - for 5 day drawdown
Determine volume of permanent pool in order to size forebay:
j := 0..7 k 1..7
Al : =
,.area of contour 24.00
...area of contour 23.00
...area of contour 22.00
...area of contour 21.00
. ..area of contour 20.00
...area of contour 19,00
...area of contour 18.00
...area of contour 17.50
6603•f?
4485. ft2
2655. ft2
1978. ft2
1350•ft2
773.ft2
245.ft2
0.ft2
Ak - 1 + Ak
Vk : = 2 • Dk
Dj corresponding depth from contour above
.0• ft1
1 • fta
1•ftI
1 ft�
1•ft�
1•ft1
1•ft�
.5- fta
..incremental volume
V pond Y-V ...total volume equals the sum of the incremental volumes
V pond = 14726-fta ...total volume in permanent pool
V required = •20, V pond ...forebay volume equals 20% of total pool volume
V required 2945-fta ...cuft required in forebay

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
Determine volume in forebay:
m:=0..7
am :=
0•ft2
n:=1..7
... area of contour 17.50
...area of contour 18.00
•. •area of contour 19.00
.. •area of contour 20.00
...area of contour 21.00
...area of contour 22.00
... area of contour 23.00
... area of contour 24.00
dn, : =
p fe
.5. fti
1 • ft`
1 • fe
fe
1-ft"
11ft1
1. ftI
6.25. ft2
56.25, ft2
156.25• ft2
306.25•ft2
506,25. ft2
1069.50•ft2
1836.75. ft2
an - 7 + an
vn 2 do
V = 5-v
...incremental volume
Page 6
corresponding depth from contour below
forebay .,.fatal volume in forebay equals the sum of the incremental volumes
V forebay = 3018•ft3 ..total volume in forebay must be >= V required ' 2945-ft3
Check capacity of emergency spillway to pass 60 year peak flw :
L := 18 ft .. , length of weir
H := 2 ft ...Driving head C w := 3.0 ...Weir coefficient
Q := C ,N L• H1.5 ...Weir capacity
Q = 29.39 must be => Q1 50 = 26.88 OX
Using a 16" barrels check velocity at outlet from pond:
D := 1.25 ft q := 8.63 cfs .,.max barrel discharge from routing sheets
�• D2
pipe = 4 �` pipe ' 1.227
V outlet , = A q V outlet ` 7.03 fps
Pipe
Determine outlet apron dimensions and riprap size for discharge from pond:
From Figure 8.06.b.1 and Figure 8.06.b.2 choose Zone 2.
L a := 6• D L a = 7.5 ft - minimum length of apron from figure 8.06b2
W : = 3• D W = 3.76 ft - minimum width of apron from figure 8.06b2
dia := 6 diameter of stone in inches
d max : = 1.5 dia d max ` 9 max. stone diameter
t := 15 in. min. thickness of apron in inches

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
Determine outlet apron dimensions and riprap size for discharge to pond :
V : = 5.1 fps - from pipe sizing chart
D:=2 ft
From Figure 8.06.b.1 and Figure 8.06.b.2 choose Zone 1.
L a := 4• D L a = 8 ft - minimum length of apron from figure 8.06b2
W := 3- D W = 6 ft . minimum width of apron from figure 8.06b2
dia : = 6 diameter of stone in inches
d max 1.5• dia d max = 9 max. stone diameter
t : = 18 in. min. thickness of apron in inches
Check velocity at pipe outlet under entrance drive:
D:=4 ft
headwater : = 35.00 26.00 headwater = 9 ft.
hwd : = headwater hwd = 2.25
v
q pipe = 165 cfs - From "Hydraulic Design of Highway Culverts", a 48" pipe with headwater depth of 9'
Using this flow, calculate velocity of water exiting pipe.-
2
A pipe : = 4
q pipe
V outlet = A
pipe
A pipe = 12.566
V outlet = 13.1 fps
Determine outlet apron dimensions and riprap size for entrance drive:
From Figure 8.06.b.1 and Figure 8.06.b.2 choose Zone 3.
L a : = 8• D L a = 32 ft - minimum length of apron from figure 8.06b2
W : = 3.0 W = 12 ft - minimum width of apron from figure 8.06b2
dia := 13 diameter of stone In inches
d max := 1.5-dia d max = 20 max. stone diameter
t := 24 in. min. thickness of apron in inches
Now calculate velocities in diversion Swale and check channel liner
requirements:
A 32174 A - 0.739 acres draining to Swale
Swale 43560 Swale " g
A 3275 A = 0.075 acres disturbed area draining to swale
swaledist 43560 swaledist g
q 1 C pre"I 10.A Swale q 1 = 1.577 .total flow in channel in cfs from routing chart
Page 7

Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
B := 0 ...bottom width of channel (ft)
M 3 ...side slopes typical of all ditches
length = 530
fall = 11
s = fall s = 0.021 ...channel slope
length
n . 0.20 ...roughness coeff. for retardance factor "C" (must be consistent with depth of flow)
n
Z req 1 Z req = 1.469 ...Z required (from R.Malcolm)
1.49•�
y .922 ...depth of flow (ft.) - vary this number until Zav (below) is approx. equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A 6-y + M• (y)2 A = 2.55 ...Cross -sectional area of flow (sq.ft.) at depth y
P := 8 + 2-yFI+M2 P = 5.831 ...Wetted perimeter (ft.) at depth y
R:= A
P
2
Zav A-(R)3
R = 0.437
Z av _ 1.469
Now compute velocity at this depth:
2 1
V := 1•48 R3 s2 V = 0.618 fps
n
.Z available
Hydraulic radius (ft.) at depth y
V- R = 0.27 Using this value, choose n from Figure 8.05c page 8.05.7 and adjust n above
until consistent
From Table 8.06a page 8.06A
V p := 4.5 fps - Permissible Velocity for channels lined with specified grass with slopes 0-4.6%
in easily erodible non -plastic soils
Since V<Vo. ,permanent channel tirlanqOX
Now check velocity in bare soil to determine It a temporary channel liner is required:
n := 0.02 ...roughness coeff. for bare soil from Table 8.05b
Using normal depth procedure, calculate depth of flow:
n
Z req 1 Z req = 0.147 ...Z required (from R.Malcolm)
1.49, N s
y :_ .389 ...depth of flow (ft.) - vary this number until Zav (below) is approx. equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A := 8• y + M• (y)2 A = 0.454 ...Cross -sectional area of flow (sq.ft.) at depth y
Page 8

P:=B+2•y1 + M 2 P=2.46
R_ : = A
P
2
Z av := A-(R)3
R = 0.185
Z av = 0.147
Now compute velocity at this depth:
Drainage Calculations for
Smith Creek Boat Storage
Market St.
Wilmington, NC
.Wetted perimeter (ft.) at depth y
...Hydraulic radius (ft.) at depth y
...Z available
2 1
V := 1.49 R3•s2 V = 3.479 fps
n
From Table 8.05d page 8.05.9:
V p := 2.5 fps - Permissible Velocity for unprotected soils (fine sand) in channels
Since V>Vp, a temporary channel lining is reguire_ dd
Compute velocity in swale again assuming a curled wood mat as the temporary liner:
n 0,035 ...roughness coeff. from Table 8.05e
Using normal depth procedure, calculate depth of flow:
n
Z req 1 Z req = 0.267 ...Z required (from R.Malcolm)
1.49• N s
y :_ .48 ...depth of flow (ft.) - vary this number until Zav (below) is approx. equal to Z.req
(above) - may also have to vary n above to be consistent with this depth
A := B•y + M• (y)2 A = 0.691 ...Gross -sectional area of flow (sq.ft.) at depth y
P := 8 + 2•y 1 + M2 P = 3.036 ...Wetted perimeter (ft.) at depth y
R := P R = 0.228 ...Hydraulic radius (ft.) at depth y
2
Z av := A. (R) 3 Z av = 0.258 ...Z available
Now compute velocity at this depth:
2 1
V := 1'4g•R •s2 V = 2.287 fps
n
Calculate shear stress for this velocity:
T allow : = 1.55 lb per sq.ft allowable shear stress
r := 62.4 ...unit weight of water
Page 9

Drainage Calculations for Page 10
Smith Creek Boat Storage
Market St.
Wilmington, NC
T := yys
T = 0.622 ...shear stress
Since T<Tallaw, tempa►r,*rxaha,nnei lining is O.K.
REFER TO ATTACHED SHEETS FOR ROUTING RESULTS
Note: References to chart nos., table nos., and page nos, refer to Erosion and Sediment Control
Planning and Design Manual unless noted otherwise

HONEYCUTT ENGINEERING CO.
CONSULTING ENGINEERS
610 HIDDEN VALLEY ROAD JAN
WILMINGTON, NC 28409
910-350-0631
January 8, 2001
State of North Carolina
Department of Environment
And Natural Resources
Division of Water Quality
Re: Smith Creek Boat Storage
Stormwater Project Number SW8 001009
Dear Mr. Vinson:
! have reduced the size of the fore bay and have included two drawings and new
calculations for your review.
Sincerely,
James R. Honeycutt, Jr. P.E.

* * * COMMUNICATION RESULT REPORT ( NOV.29.2000 11:03AM )
P. 1
FILE MODE
OPTION
ADDRESS (GROUP)
-----------------
219 MEMORY TX 9-3500631
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
V( '0 j6 P-�
TTI `NCDENR WIRO
"RESULT -\ PAGE
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
State of\orth Carolina na
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Dice
Janes l3, Hunt, Governor Bill Holman, Secretary
FAX COVE, R SHEET
Date: November 29, 2000 No.'of Pages: 1.
To: Jim Honeycutt, P.E. From: Scott Vinson
Company: Honeycutt Engineering Co. Water Quality Section - Stormwater
FAX #: [phone] FAX #: [phone]
Phone #: [phone]
DWQ Stormwater Project #SW8 001009
Project Name: Smith Creep Boat Storage
MESSAGE:
Jim, everything on the application looks great except the size of the fore bay.
Please reduce the size of the fore bay down from roughly 25% of the permanent pool volume
to around 20%. Two new sets of plaits will need to be submitted and once the new numbers
and page b of the calculations are submitted 1 will be glad to correct the supplement Form so
there will not be a need to mail them back and forth between us. Please call if you have any
questions. Thatiks, Scott.

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
James B. Hunt, Governor
FAX COVER SHEET
Date: November 29, 2000
To: Jim Honeycutt, P.E.
Company: Honeycutt Engineering Co
FAX #: [phone]
DWQ Stormwater Project #SW8 001009
Project Name: Smith Creek Boat Storage
MESSAGE:
Bill Holman, Secretary
No.'of Pages: 1
From: Scott Vinson
Water Quality Section - Stormwater
FAX #: [phone]
Phone #: [phone]
Jim, everything on the application looks great except the size of the fore bay.
Please reduce the size of the fore bay down from roughly 25% of the permanent pool volume
to around 20%. Two new sets of plans will need to be submitted and once the new numbers
and page 6 of the calculations are submitted I will be glad to correct the supplement form so
there will not be a need to mail them back and forth between us. Please call if you have any
questions. Thanks, Scott.
S:\WQS\STORMWAT\ADDINFO\001009.NOV
127 Cardinal Drive Extension, Wilmington, NC 28405-3845 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer

BOAT STORAGE FACII TY
MARKET STREET
NARRATIVE IVE ON STORMW? TER MANAGEMENT
This site consists of 6.54 acres that Will be developed in two phases. A drainage ditch
running from south to north divides the site into two drainage basins. That part of the site
on the eastern side of the ditch consists of 3.63 acres that will be developed as phase I . It
is that portion of the site for Which this permit application has been prepared. It is
planned to construct two buildings and the associated drives to access these buildings.
The stun Water runoff will be collected and tried in a Wet pored in the northwest corner
of Phase 1.
Since there are two district drainage basins it is anticipated thd each basin will be
permitted as if they were separate sites with individual Bret ponds for each phase_ The
second phase of this project has not been planned at this time. Some references to Phase
2 Will be seen in the calculations for Planning purposes but should be ignored for this
application.
A pocket of Wetlands exists in the northwest corner of Phase 2. These wetlands will not
be disturbed dung the fast phase of construction. The bottom of the drainage ditch for
its entire length through the site is also considered wetlands. These wetlands Will be
disturbed only in those areas n ssas to gain access to tie site and to coM-mud the
outlet and overflow structures for the pored.
"ety
HO - WP
RECF;FAED
OCT 0 6 2000
DWQ
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