SW8020120_CURRENT PERMIT_20020620

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPECURRENT
PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
June 20, 2002
Mr. Broadus E. Hill, I11, Member/Manager
KAECO.LLC
81 1 Wood Cove Road
Wilmington, NC 28409
Subject: Permit No. SW8 020120
Surf City Auto -Shine and Storage
High Density Stormwater Project
Wet Detention Pond
Pender County
Dear Mr. Hill:
The Wilmington Regional Office received a complete Stormwater Management Permit Application
for Surf City Auto -Shine and Storage on April 24, 2002. 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 020120 dated June 20, 2002, for
the construction of Surf City Auto -Shine and Storage.'
This permit shall be effective from the date of issuance until June 20, 2012, 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.
Ifany 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,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:IWQSISTORMWATIPERMIT1020120.JUN
cc: John Klein, P.E.
Town of Surf City Building Inspections
Linda Lewis
Wilmiii&ri Regional Office
Central Files
N ENR
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax [phone] Customer Service
800-623-7748

State Stormwater Management Systems
Permit No. SW8 020120
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
KAECO, LLC
Sw f City Auto -Shine and Storage
Pender 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 June 20, 2012, 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 a maximum of 48,877 square feet of impervious area.
3. The tract wilGbe limited to the amount of built -upon area indicated on page 3 of this permit,
and per approved plans. The built -upon area for the future development is limited to n/a.
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.

State Stormwater Management Systems
Permit No. SWS 020120
a
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Pro9ect Name:
Permit Number:
Location:
Applicant:
N4ailing Address:
Application Date:
Name of Receiving Stream/index 9:
Classification of Water Body:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, ft2:
Offsite Area entering Pond, ft':
Required Surface Area, ftz:
Provided Surface Area, ftz:
Required Storage Volume, ft3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL
Controlling Orifice:
Surf City Auto -Shine and Storage
SW8 020120
Pender County
Mr. Broadus E. Hill, I1I, Member/Manager
KAECO, LLC
811 Wood Cove Road
Wilmington, NC 28409
April 24, 2002
Cape Fear / ICWW / 18-87-(5.5)
"SA" (>1/2 mile)
5.5
17
1.63
48,877
none, per engineer
3,146
3,575
4,441
4,441
18.1
1 " pipe
I

State Stormwater Management Systems
Permit No. SW8 020120
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.
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 slopes and the vegetated filter.
d. Immediate repair of eroded areas.
C. 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. The permittec 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":
1
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 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.
4

State Stormwater Management Systems
Permit No. SW8 020120
10. The permittee shall submit final site layout and grading plans for any permitted future areas
sholAm 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. ,
H . 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.
12. 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
penmittee if access to the stormwater facilities will be restricted by the sale or lease of any
portion of the property.
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. Thepermittee shall provide copies of revised plans and certification
in writing to the Director that the changes have been made.
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. Responsibility for compliance with all permit conditions remains with the
Permittee until such time as the Division approves the formal permit request.
2. FaiIure 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 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. ,
W1

State Stormwater Management Systems
Permit No. SW8 020120
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 20th day of .tune, 2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
:; rl Division of Water Quality
By Authority of the Environmental Management Commission
11

State Stormwater Management Systems
Permit No. SW8 020120
Surf City Auto -Shine and Storage
Stormwater Permit No, SW8 020120
Pender County
Designer's Certification
I, , as aduly registered
in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the project,
roj
for (Prbject 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

0
State Stormwater Management Systems
Permit No. SW8 020120
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. 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
Town of Surf City Building Inspections

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
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
�, AEC.a , L,-L-C -
2. Print Ownerr//Signing Official's name and title (person legally responsible for facility. and compliance):
_ D i2t� �fl� �• � � �.. � � � - � �y►� Y3E1C. � .tea h-6�E�'� .
3. Mailing Address for person listed in item 2 above:
6ti I wool CQ.,E Rn^.�
City: W N,.rA-A a („-M , i State: f--C Zip: Z 840
Telephone Number. 0 1- (a6
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Ali.-<-, >- �E ADD LE
5. Location of Project (street address):
WO-E +4SS�c.,rtiED +�r t4tS T1MC
City: County:- _ PE-t-ID EY2
6. Directions to project (from nearest major intersection):
w. W t �.M ►N 6f'c o� , T,,y,�E VS i�..3 `{ 1 "i � oK�+l- ; �v,c.� +R [�s�-� oa .�-w�t z, ,o_}
-T�ica (Z (SEA o� V4 i��.�� SO �►tny�LT 1S vw�
7. Latitude: t`l '?, A 74. S Longitude: w `l `] 33 -1, _ of project
Contact person who can answer questions about the project:
Name: F—>> Telephone Number: ('Rto )-T;1—U6. (o
II. PERMIT INFORMATION:
1. Specify whether project is (check one): V11, New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number N 114 and its issue date. (if known) w 1A,
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.
�-rb �,.., w r4-T EtiC Col-C.0 GT BO V \�+. 1 r�(r�� Jr�•s 1s � 1 i� D TQ �w O
STo.tw, .� Pc-T•t�2. �i�t�
2. Stormwa ter runoff from this project drains to the VN7-vcA c 04S1-.4t Wti-r6:XWAY Riverbasin.
3. Total Project Area: 1. (, 3 acres
5. How many drainage areas does the project have? k
4. Project Built Upon Area: Get %
6. Complete the following 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.
tiFJ
#Basin Informaon
... 4 ....
ill. 11 e Area P �
.. �_ ,:M F _
e" rN.:(Niit'HFF�&�t).;:'.tidcY>Ak.'.'.2'VfHtWf.A'fN^,✓.
m:
o yDr ALefArea
n
Receiving Stream Name
Ct,�
Receiving Stream Class
S�
Drainage Area
'70 978 5r:'
Existing Impervious* Area
o
Proposed Irn ervious*Area
q.$ 16-f I SF
% Impervious* Area (total)
. � , cl 0&
f .Ixn ervious�^Surface Area' �
��, �"��� # geArea=�1�� � �
,� , � ,DramageArea 2,
On -site Buildings
On -site Streets
On -site Parking
3 7-1 5F
On -site Sidewalks
Other on -site
Off -site
—
Total: $►T-7 SF-
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form 5WU-101 Version 3.99 Page 2 of 4

How was the off -site impervious area listed above derived? NotNE y�v-n%—r-ryD --T-
Ec m
IV. DEED RESTRICTIONS AND PROTECTIVE COVENAINrTS
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 anachnrerit.
The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
f A. _ as issued by the Division of Water Quality. These covenants may not he
changed or deleted without the consent of the State.
2. No more than NI P� — 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
deddr?g or the water, surface of swimming pools.
3. Swales shall not be filled in. piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stornnwater lnalragemejnt permit nnodifrcation prior to
construction.
5. All permitted runofffmm outparcels or future development shall he directed into the permitted storm water control
system. These connections to the stormwarer control system shall be performed in a manner 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 persons
claiming under them, that they will run with the land., that the required covenants cannot be changed or deleted
vvithout concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state storrnwater management perm t supplement fami(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement '
1?orm SWU-304
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SNAIU-106
off -site. System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Farm SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Managernent Practice Supplement
Form SWU-101 Version 3.99 Pate 3 of

1
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 indicare that you have provided the following required information by initialing in the space provided
next to each item.
Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of storrnwater treatment/tnanagernent f
• 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 storniwater 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)
V11. 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): V•� �+w�,w��.� __C-ra t��a.yELt�ti�e��cS _ _
Mailing Address: 1�o %,-LZ A v E .
City: +-ti. t-?6%--ro►-) State
Phone: {goo )—JC(C-{--7c( (,I Fax:
VM. APPLICANT'S CERTIFICATION
Y.?L
i. (print or type name of person listed in General Information, item 2) _ ZtepkD JS_ E , �A I LL
certify that the information included on this permit applicationi form is, to the hest 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. f
Signature:
FormSWU-101 Version3.99
l
Page 4 of 4
Date: Z 1_ Z- 5- o Z

-[ Permit No.G LG'f 2(�
(to be Provided by D[YQ)
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
_D«'Q_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 INFORMATION
Project Name:
Contact Person: 7—=ti Prone Number: '�_10 ) `19C Z(ofoC,
For projects with multiple basins, specify which basin this worksheet applies to: tiA
elevations
Basin Bottom Elevation 1y S ft. (floor of the basin)
Permanent Pool Elevation k l- O ft. (elevation of the orifice)
Temporary Pool Elevation lg . \ ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area
sq. ft.
(water surface area at the orifice elevation)
Drainage Area
1. 3
ac.
(on -site and off -site drainage to the basin)
Impervious Area
1.1 Z
ac.
(on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
13
cu. ft.
(combined volume of main basin and forebay)
Temporary Pool Volume
A3Z
cu. ft.
(volume detained above the permanent pool)
Forebav Volume
279 4
cu. ft.
(approximately 20% of total volume)
Other parameters
SAIDAI
_.4 • 50
(surface area to drainage area ratio from DWQ table)
Diameter of Orifice
_� �cc
in.
(2 to S day temporary pool draw -down required)
Design Rainfall
0
in.
Design TSS Removal'-
90
%
(minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4

Permit No. 9�V,90_)_o /a cD
(to be provided b�- 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 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 INFORMATION f
Project Name: f --PIF C I-,`[ � -"srt tia � � Sro,2A 6�. _
Contact Person: 'E�� �A, � Phone Number: R �o "t q Q - 2.G (L
For projects with multiple basins, specify which basin this worksheet applies to: t- 1A,_
elevations
Basin Bottom Elevation
IZ-G1.
ft.
Permanent Pool Elevation 11 5 ft.
Temporary Pool Elevation -- _ l lg_to ft.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 35`7� sq. ft. (water surface area at the orifice elevation)
Drainage Area 1. t. = • ac. (on -site and off -site drainage to the basin)
Impervious Area 1 • IZ ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume l3.8T7 cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume _ 44 3Z cu. ft. (volume detained above the permanent pool)
Forebay Volume 2 754 cu. ft. ` (approximately 20% of total volume)
Other parameters
SA/DA 1
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
•f
Form SWU-102 Rev 3.99
-A • SO (surface area to drainage area ratio from DWQ table)
l • oo in. (2 to 5 day temporary pool draw -down required)
l•o in.
8 % (minimum 85% required)
Page 1 of 4

Footnotes:
t •
1 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 value for non -
table entries.
2 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 BIVIP 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
� = % fir- 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.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
_ U f A...,__ e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
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.
J. A trash rack or similar device is provided for both the -overflow and orifice.
M1.6 k. A recorded drainage easement is provided for each basin including access to nearest right -
all 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.
r
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
:i
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 6 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does "oes not incorporate pretreatment other than a forebay.
Form SWU-l02 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
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.
4-1
When the permanent pool depth reads 1,6� feet in the main pond, the sediment shall be removed.
4J
When the permanent pool depth reads 1� feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 17. D
Sediment Re oval El. 1;"+5 12Y 75
------------- -- Sediment Removal Elevation �3r c.q 75%
Bottom Ele ation �7 5 II.S %----------------------------------------------------
j Bottom Elevation 17-49- 11,5 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

7. All components of the wet detention basin system shall be maintained in good working order.
f
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 name:
Title—'
Address: - Stl W0." Co'JG 'R.m' . �•��-c�•��T�,�} NC- 7,5,A.OS
Phone: -Iq1-- Zc"�(' ---
Signature:_
Date: / - L'? . - -?
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, a Notary Public for the State of CO./ y n
County of ) C"-; I Q ►'1 u t: e r , do hereby certify that d c' S C d Lc; o c 14 r. i 1 L1
personally appeared before me this � 3 `xday of J Ll Q �(Q r y - b0 S , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
I� My commission expires
Farm SYVU-l02 Rev 3.99 Page 4 of 4