SW8000425_CURRENT PERMIT_20010516

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW��SJ
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
apGYO$-�4
WYYMMDD

North Carolina
Department of Environment and Natural Resources
Divvoon of Water QuAlit,,
Wiiminglon Regional Office
Michael F E-isley, Governor
William G Ross, Jr, Secretary
May 16 2001
Mr Dennis Chisum Partner
Three C s Investments LLC
31 1 Tudges Road, Unit #1 F
Wilmington, NC 28405
NCDENR
NORTH CAROLiNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject Permit No SW8 000425
Chisum Storage
High Density Stormwater Pioject
New Hanover County
Dear Mi Chisum
The Wilmington Regional Office received a request to transfer ownership and change the mailing address of the
Stormwatei Management Permit Application for Chisum Storage from Parkway Business Park, LLC, to Three C's
Investments, LLC, on May 1, 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 000425, dated tune 28, 2000, and revised May 16, 2001, for the construction of
Chisum Storage
This permit shall be effective from the date of issuance until Tune 28, 2010, 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 of the stormwater management
system will result in future compliance problems
If anv parts, i equii ements, 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 Car olma General Statutes and filed
with the Office of Administrative Hearings, P O Drawei 27447, Raleigh, NC 2761 1-7447 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
C_ c-
Rick Shivei
Water Quality Regional Supervisor
RSS/sav S IWQSISTORMWATIPERMIT1000425 TUN
cc David Hollis, P E
Tony Roberts, New Hanover County inspections
Beth E Wetherill, New Hanover County Engineer ing
Scott Vinson
Wilmington Regional Office
Central Files
127 Cardinal Dr Ext, Wilmington, North Carolina 28405 1clephone 910-395-3900 FAX [phone]
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State Stoi mwater Management Systcros
Permit No SWK 00042;
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 ofNorth Carolina as amended, and
othei applicable Laws Rules, and Regulations
PERMISSION 1S HEREBY GRANTED TO
Three C's Inveslmenls L LC
Chisun? Storage
New Hanover Counly
FOR THE
construction operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H 1000 (hereaftei referred to as the "slorn7watei rulev'D 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 considei cd a part of this permit
This permit shall be effective from the date of issuance until tune 29, 2010 and shall be subject to the following
specified conditions and limitations
I DESIGN STANDARDS
l This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data
2 This stormwatei system has been approved for the management of stormwatei runoff as described on page
of this permit, the Pi oject Data Sheet The stormwatei Conti of has been designed to handle the i unoff fi om
74 052 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
2

I
State Stormwatei Management Systems
Permit No SW8 000425
P10lc.ct Name
Permit Number
Location
Applicant
Mailing Addjcss
DIVISION OF WATER QU ALITY
PROJECT DESIGN DATA SHEET
*Chisum Storage
SW8 000425
New Hanover County
Mr Dennis Chisum, Partner
Three C's Investments, LLC
311 Judges Road, Unit 41 F
Wilmington, NC 28405
Application Date April 20, 2000, revised May 1, 2001
Name of Receiving Stream/Index # Spimg Branch / CFR 18-74-53
Classification of Water Body "C Sw"
If Class SA, chloride sampling results
Pond Depth, feet
Permanent Pool Elevation, FMSL
Drainage Area, acres
Total Impervious Surfaces, ft2
Buildings ft2
Streets, ft2
Offsite Ai ea entering Pond, ft2
Required Surface Ai ea, ftz
Provided Surface Aiea, ft2
Required Storage Volume, ft3
Provided Storage Volume, ft3
Temporary Storage Elevation, FMSL
Controlling Orifice
n/a
60
2800
2 10
74,052
34,848
39 204
none per Engmeei
4,260
5,880
5,935
6,353
2900
1 00" c pipe
*The piolect name is spelled incorrectly on the plans as Chisom Storage
3

State Stotmwatet Management Svstems
Permit No SW8 00042-�
II SCHEDULE OF COMPLIANCE
1 l lie stormwater management system shall be constructed In it's entirety vegetated and operational for its
intended use pi ioi 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 permittce shall at all tunes provide the operation and maintenance necessat y to assut e the pet mrtted
stormwatet system functions at optimurn efficiency The appt ovcd Operation and Maintenance Plan must
be followed to its entirety and maintenance must occur at the scheduled intervals including, but not ]nnuted
to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and tevegetatron of side slopes
d Immediate repan of eroded areas
e Maintenance of side slopes in accordance with appt oved plans and specifications
f Debris removal and unclogging of outlet structure, of ifice device and catch basins and piping
g Access to the outlet structure must be available at all time,,,
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 pet forming the work and what actions
were taken
Decorative spray fountains will not be allowed to the stormwater treatment system
The facilities shall be constructed as shown on the approved plans This permit shall become voidable unless
the facilities are constructed to accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data
Upon completion of construction, prior to issuance of a Certificate of Occupancy, andprtoi to operation of
this permitted facility, a certification must be received from an appi oprrate 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 storrnwater treatment device, and prior to occupancy of the facility
The following items will 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 project area The project area is defined as all property
owned by the permittee, for which Sedimentation and Etosron Control Plan approval was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan
10 The Dnector may determine that other revisions to the project should require a modification to the permit
I 1 A copy of the approved plans and specifications shall be maintained on file, by the Permtttee for a minimum
of ten years from the date of the completion of construction
Fil

State Stoiniwatei Management System,,
Permit No SW8 00042�
12 Pi ioi to the sale of any poi Lion of the property an access/maintenance easement to the "tornivvatei facalitieti
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of anv portion of the property
l The permitiee is responsible for verifying that the piopowd built -upon area does not exceed the allowable
built -upon area
14 The runoff from all built -upon area on the piolect must be diiccted into the peinmiltcd stormwater control
system
15 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
16 the permittee shall notify the Division of any 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 icquest must be submitted to the Division of Watei
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as maybe appropriate The approval of this request will be considered on its merits and mayor
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 fi om 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
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 foi cause The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition
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 modified and reissued this the 16th day of May, 2001
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000425

State Stormwater Management Systems
Permit No SW8 0004`'5
Chisum Stoiase
Stoimwatei Peirna No SVI'8 000425
New Fl inovei County
Designer's Certification
as a duly registered
in
the State of North Carolina having been authorized to observe (periodically/weekly/full time) thy. construction of
the project
(Project)
for (Project Owner) hei eby 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
Signatuic
Registration Number
Datc
SEAL
0

State Stojrnwatei Management SvstenZs
Pei mil No SW8 00042�
Ceitilication Requiic.mcrits
1 The drainage area to the system contains approximately t11e permitted acreage
2 the drainage area to the system contains no more than the permitted amount of built -upon area
All the built -upon area associated with the project is graded such that the runoff drams to the system
4 The outlet/bypass structure elevations are pei the approved plan
.S The outlet sti ucture is located per the approved plans
6 Tiash rack is piovided on the outlet/bypass structure
7 All slopes are gassed with permanent vegetation
_b Vegetated slopes are no steepei than 3 1
9 The inlets aie located per the appioved plans and do not cause short-ciiculting of the system
10 The permitted amounts of sui face area and/or volume have been provided
1 1 Required drawdown devices are correctly sized per the approved plans
12 All required design depths are provided
13 All 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

North C'arohna
Department cif En,. tronment and Natural Resources
Dn ision of Nvater QuAirA -RECEIVED
Wllmin-ton Rcgtunal Office
Michael F Easlei, Governor
M)lllam G Ross, Jr, Secretary
MAY 01 2001
nwQ
PROD #
A*;A
swu
NCDENR
NORTH C.AROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
WATER QUALITY SECTION
COASTAL STORMWATER PERMIT NAME/OWNERSHIP CHANGE FORM
I CURRENT PERMIT INFORMATION
Stormwater Management Permit Number 5(�V F 00(—
1 Permit Holders name i r C' �S 'Ti'1uPS e/L7 L LG
2 Permit s signing official's name and title 15 iD Chi S VM
(person legally responsible for permit)
i?oW--171)J�4L
;� cntie)
3 Marlin- address 3 l _ J eF R 4 Un. �` �� City W- IryLoq-ark -- -
_ ._.
State t CL Zip Code aiR45 Phone 10 - o -05(5 FAX _WO -35,-� -7093
(Arta Code and Number) (Area Code and Number)
II NEW OWNEWNAME INFORMATION
1 Thifi request is for
a Change in ownership of the property/company ti
'�
la Name change ooprojer-
cor company ?Upges "�oa� w M,01
Other (please explain) J
2 New owner s name (name to be put on permit)
3 New owner s Signing official s name and title
(Person leadlly responublL for permn)
4 Mailing address
State Zip Code Phone
City
FAX
(Arta Code and Numher) (Area CodL and Number)
127 C irdin it ❑r Ext W Iimington, North C-irolina 2840'; Telephone [phone] FAX [phone]
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n

PERMIT N4l%jE/OWNERSHIP CHANGE FORM
THIS APPLICATION PACKAGE NVILL NOT BE ACCEPTED BY THE DIN71SION OF WATER QUALITY
UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMITTAL
REQUIRED ITEMS
This completed form
Legal documentation of the transfer of ownership
A copy of the recorded deed restrictions, if required by the permit
The encineer s certification, if required by the permit
A signed Operation and Maintenance plan, if a system that requires maintenance will change ownership
CERTIFICATION MUST BE COMPLETED AND SIGNED BY BOTH THE CURRENT PERMIT HOLDER AND
THE NEW APPLICANT IN THE CASE OF A CHANGE OF OWNERSHIP
FOR NAME CHANGES, COMPLETE AND SIGN THE CURRENT PERMITTEE'S CERTIFICATION
Current Permittee's Certification
11 !1 S —D. ch 1 Su M , attest that this application fora name/ownership change has been reviewed and
is accurate and complete to the best of my knowledge I understand that if all required parts of this applicanion are not
completed and that if all required supporting information and attachments are not included, this application package will be
te 4 returned as incomple/1 �O , f r
Signature n_ Date
Applicant's Certification
1 , attest that this application for a name/ownership change has been reviewed and
is accurate and complete to the best of my knowledge I understand that if all required parts of this application are not
completed and that if ell required supporting information and attachments are not included, this application package will be
returned as incomplete
Signature
Date
THE COMPLETED APPLICATION PACKAGE, INCLUDING ALL SUPPORTING INFORMATION AND
MATERIALS, SHOULD BE SENT TO THE FOLLOWING ADDRESS
North Carolina Department of Environment and Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
ATTN Linda Lewis

North Carolina
Department of Environment and Natural Resources
Divi�uin of Water Quality
NNilmington Regional Office
Michael F Easley, Governor
William G Ross, Jr, Secretary
Mr Dennis Chisum, Partner
Three C's Investments, LLC
31 I Judges Road, Unit 41 F
Wdi-nncton NC 28405
Dear Mr Chisum
April 2, 2001
4 • •
NCD R
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
RECEIVED
MR,, U 1 2(l01
DW@
PROJ #
Subject Name/Ownership Change
Chisum Storage --
Stormwater Project No SW8 000425
New Hanover County
On luly 20, 2000, the Division of Water Quality requested that you complete and send in the name
ownership change form due to the discrepancies between the permittee we have listed on the permit, and what you
say shouid be on the permit No response to that request was received Please make these revisions official by
completing and returning the enclosed form '
One thing I have noticed is that your name, Chisum, is spelle h a "u" in your July 20, 2000, note to me,
but the permit and the plans spell it with an "o" I will assume th Chisum is the correct spe ing
Additionally, please submit the required Designer's Certification for this project, ifthe facility has been built
and placed into operation, per the requirements of your permit If the facility is not yet built, please let me know
a.
Please submit the required information by May 2, 2001 If you have any questions, please do not hesitate
to call nee at [phone]
kas ,)�
O f been
�'J^en 6v itSincerely,
Linda Lewis
Environmental Engineei
RSSlarl S 1WQSIST0RMWAT1ETTERS1000425 APR
cc Linda Lewis
David Hollis, P E
127 Cardinal Dr Ext , Wilmington, North Cnrohnn 28405 Telephone [phone] FAX [phone]
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®1aFIUQNLY
Hate Received
Fee Paid
Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I GENERAL INFORMATION
1 _ Applicants name (specify the name of the corporatibn, individual etc who owns the project)
F--)i7i tt,� f.,. / IP%f 1C,IL4n 'n l i�- { ! C+
2 Print Owner/Signing Official's name and title (personlegallyresponsible for facility and compliance)
E)4a yL Iq t S C��-Ly coP" 1`' 2r Jr) 4E*— --
3 Mailing Address for person listed in item 2 above
G Co 131„ _ Awt.s#,ey dx c-� U9°`� mm
City U - rA L+�1_Q State Zip
Telephone Number
4 u Project Name (subdivision, faality, or establishment name - should be consistent with project name on -
plans, specifications, letters, operation and maintenance agreements, etc }
L-u warn e - -- -
5 Location of Project (street address)
_ .Jc �S I�o�L t3c�s I ass I��t. f_c
City ll �i 1 /1,Q br_.._—._ County _Q19JA,a WKLt.tCJtaLL/ —
6 Directions to project (from nearest major intersection)
7 Latitude 34 (S Longitude of project
fi
8 Contact person who can answer questions about the project
Name 1>—.t'tVLLS SCJYt t Telephone Number
II PERMIT INFORMATION
1 Specify whether project is (check one) ✓ New
Renewal Modification
Form SWU-101 Version 3 99 Page I of 4

a
"'i
2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing penrut number_ 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)
_CAMA Major _Sedimentation/ Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
III PROJECT INFORMATION - -
1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative
(one to two pages) describing stormwater management for the project _
i r 41.0 -- tn0 4 u 4-1 rr�. - 1,4 n �P u -�-i r r, A-
_ I �
2 Stomiwater runoff from this project drains to the . River -basin
3 Total Project Area 2.� acres 4 Project Built Upon Area ``-+� %
5 How many drainage areas does the project have?� - u
6 Complete the following information for each drainage area If there are more than two drainage areas in the
project, attach an additional sheet ohth-the information for each area provided in the same format as below
irt�Ir Forma
,.I7raitnage Area* �*
_'� g tl
1a�-��FJ�alna.
Receiving Stream Name
7S-V1 _ maA�
Receiving Stream Class
I�U-3
Drainage Area
2� 0-r—rc.5
Existing Impervious* Area
MA
Pro osed Im ervious`Area
Q G1^eS
% Impervious* Area (total)
Im eiviousSurfaceea
f5r Drainage =Area
Area;2 JM
Ll
On -site Buildings
0.a aL
On -site Streets
© QG
On -site Parking
On -site Sidew
r-,
Other on -site
----
Off-site
Total �� acoe5
Total
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc
Form SWU-101 Version 3 99
Page 2 of 4

Js
7 How was the off -site impervious area listed above derived?
2.t c.�s �.
,c
fr�r� a✓
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment
1 The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number - - as issued by the Division of Water Quality These covenants may
not be changed or deleted without the consent of the State
No more than —A square feet of any lot shall be covered by structures or impervious materials
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools
Swales shall not befilled in, piped, or altered except as necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of Me 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
persons claiming under them, that they will run with the land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot
V SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project Contact the Stormwater and General Permits Urut at [phone] for the
status and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse Raver 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 the following required information by initialing in the space
provided next to each item
Initials
• Original and one copy of the Stormwater Management PenTut Application Form T"Vs ti ^
• One copy of the applicable Supplement Form(s) for each BMP _ MS44
• Perrrut application processing fee of $420 (payable to NCDENR) D:,:;,
• Detailed narrative description of stormwater treatment/management _ Dv 64
• Two copies of plans and specifications, including �r _
- Development/Project name -
- _ = Engineer and firm - _ -Legend
- North arrow
- Scale
- - Rdvision number & date - -
- - Mean high water line
v Dunensioned property/project boundary - - -
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, fuushed floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated -
- - Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section '
Designated agent (individual or firm) i�y [�5t Secruces 1 (2)
Mailing Address
City State �i _ Zip Z8 401
Phone (:N5 2_ Fax (� tU ) 4-�J " ' ES c70 -_ —
VIII APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) yL (/1.� S Q_LkA_!SCr)"
certify that the information included on this pernut 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 protectivd covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H IOWA /7 n n
Signature
Date
Form SWU-101 Version 3 99 I Page 4 of 4

1
Permit No < OF 090 q,.ZC
(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
DWQ. Stormwater Management Plan Review
A complete stormwater management plan subrruttal 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 INFORMATION _
Project Name-�/L.�S
_ Contact Person 0 (•tA Sovt., - Phone Number (�C7) Co f ro-3�Cf I
-For projects with multiple basins, specify which basin -this worksheet applies to
elevations 1E�I r1it 5 L�
Basin Bottom Elevation ft (floor of the basin)
!Permanent Pool Elevation 2a - d ft (elevation of the orifice)
Temporary Pool Elevation Q ft (elevation of the discharge structure overflow) _
areas - -
�Permanent Pool Surface Area © sq ft
Drainage Area 2 - ac
frrpervious Area ac
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
S A/DA i
Diameter of Orifice
-Design Rainfall
J
Design TSS Removal 2
Form SWU-lot Rev 3 99
(wdter surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
cu ft (combined volume of main basin and forebay)
CD D cu ft (volume detained above the permanent pool)
cu ft (approximately 20% of total volume)
in
in
(surface area to drainage area ratio from DWQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required)
Page 1 of 4

Footnotes
�1 When using the Division SA/DA tables, the correct SA/DA 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
2 1n 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
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008 - -
Initial in the space provided to indicate the 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 justification.
Applicants 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 20% of the basin volume
L� c The temporary pool controls runoff from the design storm event -
IDS L& 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)-
C-� 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 y
�S f� h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
—IDS 61 1 Vegetative cover above the permanent pool elevation is specified
Z j A trash rack or similar device is provided for both the overflow and onfice
7 k A recorded drainage easement is provided for each basin including access to nearest right-
of-way
-DS &4 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 emergency
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does woes not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3 99 Page 2 of 4

Maintenance activities shall be performed as follows
DAfter 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 onfice of any obstructions such that drawdown of the temporary Vool 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 a catch basins, piping, swales, nprap, 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 a 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 main pond, the sediment shall be removed
4 When the permanent pool depth reads 4•S feet in the forebay, the sediment shall be removed
- _ BASIN DIAGRAM -W
ill to she blanks)
Permanent Pool Elevation
-
Sediment Re oval El 75 0
Sediment Removal Elevation 2'3- 75%
Bottom Ele Ation 22.0 % --------------------------------------------- -------
Bottom Elevation 22• 25%
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 sediment
^ ➢ through the emergency drain shall be minimized to the maximum extent practical
Form SWU-102 Rev 3 99 Page 3 of 4

7 All components of the wet detention basin system shall be maintained in good working order
�I g
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
i Title
Address C C::;, t dk S Lk�
Phone
- -
- Signature
Date
Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president _
I, R Q, �..0 �'h ��u , a Notary Public for the State of �Orfl�'. Ow hrn�. ,
County of Nk1,y MY?O iQ,( , do hereby certify that DM -IS cb1sw
personally appeared before me this ! g day of l DDO , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements- Witness my hand and official seal,
Q�� ,tG``�
pVBL�G 2
yN�v ov�'
EA C
SEAL
, My commission expires 0 � I 1 Pto-
il
J
Form SWU-102 Rev 3 99 Page 4 of 4

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