SW8970526_CURRENT PERMIT_20040923

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_6q:zo5a(P
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE-
A22{AA%i
YYYYMMDD

o f WArF9
Michael F. Easley, Governor
QG
William G. Ross Jr., Secretary
O�
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
January 22, 2004
Mr. David Edwards, Vice -President
bIuegreen Carolina Land, LLC
1899 Zion Hill Road
Bolivia, NC 28422
Subject: Permit No. SW8 970526 Modification
Maintenance Facility at
Winding River Plantation
High Density Stormwater Project
Brunswick County
Dear Mr. Edwards:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
Maintenance Facility at Winding River Plantation on January 16, 2004. 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 970526 Modification dated
January 22, 2004, for the construction of Maintenance Facility at Winding River Plantation.
This permit shall be effective from the date of issuance until January 22, 2014, 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 any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within O irty (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 Laurie
Munn, or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/:lsm S:1WQSISTORMWATIPERMIT1970526MOD jan04
cc: T.Jason Clark
Brunswick County Building Inspections
Laurie Munn
Wilmington Regional Office
Central Files
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone]
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax
Customer Service
1 800 623-7748

State Stormwater Management Systems
Permit No. SW8 970526 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
bluegreen Carolina Land, LLC
Maintenance Facility at Winding River Plantation
Brunswick County
FOR THE
construction, operation and maintenance of 2 wet detention ponds 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 January 22, 2014, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect t6 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 37,187 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

State Stormwater Management Systems
Permit No. SW8 970526 Modification
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: Maintenance Facility at Winding River Plantation
Permit Number: SW8 970526 Modification
Location: Brunswick County
Applicant: Mr. David Edwards, Vice -President
Mailing Address: bluegreen Carolina Land, LLC
1899 Zion Hill Road
Bolivia, NC 28422
Application Date:' January 16, 2004
Receiving Stream/River Basin: Lockwood Folly River / Lumber
Stream Index Number:
Classification of Water Body:
Drainage Area, acres:
Onsite, sq. R.:
Offsite, sq. ft.:
Total Impervious Surfaces, sq. ft.:
Building, sq. ft..-
Parking, sq. ft.:
Sidewalks, sq. ft.:
Other, sq. ft.:
Pond Depth, feet:
TSS removal efficiency:
Permanent Pool Elevation, FMSL:
Permitted Surface Area, sq. ft.:
Permitted Storage Volume, cubic ft.:
Temporary Storage Elevation, FMSL
Controlling Orifice:
(drawdown in 2-5 days)
Permitted Forebay Volume, cubic ft.:
15-25-1-(11)
"SC HQW"
POND 1 POND 2
Total Project, 4.13 acres
52,268
46,801
none
none
26,275
10,912
7,436
3,585
10,$81
4,256
7,562
1,390
396
1,681
3.5 5.0
90% (no filter is required)
37.5 38.0
7,204@Perm Pool 4,518@Perm Pool
13,811 8,868
37.8 38.5
1" � pipe
2,160
1" � pipe
1,818
3

State Stormwater Management Systems
Permit No. SW8 970526 Modification
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its 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.
Decorative spray fountains will be allowed in the stormwater treatment system, subject to
the following criteria:
a. The fountain draws its water from less than 2' below the permanent pool surface.
b. Separated units, where the nozzle, pump and intake are connected by tubing, may
be used only if they draw water from the surface in the deepest part of the pond.
C. The falling water from the fountain must k e centered in the pond, away from the
shoreline.
d. The maximum horsepower for the fountain's pump is based on the permanent
pool volume. The maximum pump power for a fountain in Pond 1 is 1/8
horsepower and in Pond 2 is 1/8 horsepower.
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.
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 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:
4

State Stormwater Management Systems
Permit No. SW$ 970526 Modification
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.
10. 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.
11. 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. 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.
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 permitttee 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.
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.
5

State Stormwater Management Systems
Permit No. SW8 970526 Modification
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 storrnwater
management facility.
6. The permit may be modified, revoked and reissued or terminated fof-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 22nd day of January 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., erector
Division of Water Quality
By Authority of the Environmental Management Commission
}
on

State Stormwater Management Systems
Permit No. SW8 970526 Modification
Maintenance Facility of Winding River Plantation
Stormwater Permit No. SW8 970526 Modification
Brunswick 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
7

State Stormwater Management Systems
Permit No. SW8 970526 Modification
Certification Requirements:
1. The drainage area to the system contains approkimately 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 Vch 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
Brunswick County Building. Inspections
�3

State of North Carolina
Department of Environment and Natural Resources
Division of Water .Quality
S'TORMWATER MANAGEMENT PERMIT APPLICATION FORM
This farm may be phai=pied for use as an anpha!
L GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person Iegally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
q ziON
City: $OL I U � A _... state.-,( -VG _ zip:_ a2� 4
'telephone Number: f 91 U ) 256 - {7 0 aO_
4. Project Name (subdivision, fadlity, or tsrablisiunent name -should be consistent with project name an plans,
specifications. letters, operation and maintenance agreements, etc.):
_ Awe\r CmAnce. r-oGJ '� tl/ a+- J' L nsq . Iycr P1arA (4
LJ
5. Location of Project (street address):
Z i Ui _ 14 1 LL--- t OA 2 - — - - --
City O A County I C
6. Directions to project (from nearest major intersection):
/VG ���_� Tewa�d Sou�6•Aor'� �' .r75 ry ,_�e5 Turn ri4k4 nrtio 10A) �1L.G ROr4(]
7. Latitude: 33 °5$ 'a0" Longitude:„ 7$D 14 r DOj, _ of project
9. Contact person who can answer questions about the project:
Name: Q0,418 F8tn4s 'telephone Number
a. PERMFT wolzVIATION:
1. Specify whether project is (check one): New Renewal Ll Modifim an
Form SWU-101 Version 3.99 Page 1 of4

? If this application is being submitted as the result of a renewal or modification to an wdstinng permit, list the
existing permit nUMber S W a al'-?_952 _ and its issue date (if lmawsaU�— 4-,199'Z_
3_ Specify the type oFproject (check me):
Low Density tf�gh Density Redssreiop General Permit Other
4. Additional Project Requirernents (check applicable blanks):
CAMA Major --edlmientasion/Eroson Control _404/401 Permit NPDES Stnnmwater
Information on required state permits can be obt uned by mat tg the Custc imer Service Center at
i-gn-623-6749.
IIL PROJECT INFORMATION
1. In the space provided below, stunmar=e hove storinwaterwill be treated_' Also attach a detailed narrative
(one to two pages) describing stnrrnewater dement for the project.
tiN r''
2. Stormwater runoff ftnm this project drains to the L Lt_r" h et"- _ River basin.
3. Total Project Area: ` - 13 acres 4. Project Punt Upon Area �. I 96
5. Haw many drainage area does the project have?_,9__
6. Complete the following informatim for each dtadnage area, If there are more than two drainage areas in the
project, aaach an additional slyest with the information for each area provided in the same ffvrrznaa as below.
ids•:c..,.�£-':.f`��u\..:5<�iX:'<c:^..
Receiving Stream Naxne
er
L a siurr
Receiving Stream Class
L C. I5
Drainage Area
I .1c,49 & S Z 2 sF
1. 0 t 4 §bl F
Existing Impervious' Area
—
--
Proposed ervirnss`Area
aysos&F'
96 Impervious' Area (total,)
Go
3 3 °,
ai`
Ball
xi.`'i ": +W:• .RY.U.
µ T
On -site Buildings
, t of c.
04 ga3 Ac.
3 S SS sp
On -site Streets
On -site Parking
0.2-IML 10.
9R (,ip
on 1,7Ac.
SG
On-ske Sidewalks
. 17 34P
sfi
n, a 30 A c.
1, 390 SF
Other inn -sire
0. 00 q1 AL
3. 5,P
0. 0 386 Ar.
1.G 81 s F
Off -.site
—
—
TotaL 0. 032A,_
( ,;IS- SF
Total p,1)606
1'mpervions area is deffned as the built upon atria inchi&g, but mt Amited 6% btt ldirW roads, parking acres,
stdmaiks, grainl arras, eic.
Farm SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? _Lll 2
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 amble
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
SW OS as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
-Me. Te4c.l�ofrckArm
2. No more than . 3 8�Q3 square feet af4 a 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
deckuig or the water surface of swimming pools.
3. Swales shall not be filled M. piped. or altered except as necessary to provide driveway crossings.
!. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
canstruction.
5. All permitted runatf 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 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 iterns 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 ainnot 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 stnrmwater management permit supplement form(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
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 River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
F= SWU-101 Vcrsion 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.
• 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 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)
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);am\d _ASSQr;C'cs Y P.A,_ _ _
Mailing Address: PO. Boy Cv2'7
City: 66.1inkie _ _. State: ZyC Zip: a 8459
Phone: ( `� 10 ) '7 5 4- G 3.24 Fax: ( q 10 } ' Sj_- a 1 a 1
VIll. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2) aV� es �Ci argS
certify that the informatiJJPn included on -this pe " it application form is, to the best of my knowledge, correct and
that the project will be cro6structed ir✓conf ance with the approved plans, that the required deed restrictions
and pro tectivey�ovena4ts wv IIBe re rdj d that the proposed project complies with the requirements of 15A
NCAC 2H .1000.1
t3
Date:
Form SWU-101 Version 3.99 Page 4 of 4

Permit No. _ S, O 'i� '71,C1 S_ Z ' Aq or)
(to be provided by DWQ) .
State of Norkh Carolina
Department of Enviunnment and Natural Resources
Division of Water Quality
WET DETENTION BASIN SUPPLEMENT
This farm mark be photoeq ied for use as an m igmal
DWQ Stormwater Management Plan Review:
A complete stormwarer 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.
L PROJECT INFORMATION
PmjectName: _I'lo,n4en,A_nt�tna R_��tlLP�Qf��ACien
Contact Person_ pap , �d f�Awac&s Phone Number. (9 I0) r] 5 5 - i020
For projects with multiple, basins, specify which basin this worksheet applies to: 2
elevations
Basin Bottom Elevation 3?-)_ O ft.
Permanent Pool Elevation S. © ft-
Temporary Temporary Pool Elevation 3 & S ft.
areas
Permanent Pool Surface Area SI sq_ ft.
Drainage Area . p744 ac.
Iiuzpemous Area O. 2 5 05 ac.
(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)
volumes
Permanent Pool Volume (0 cu. ft. (combined valume of main basin and forebay)
Temporary Pool Volume 'Z.t 38 4 cu. ft. (vaiwne detained above the permanent pool)
Forebay Volume cu. ft. (approximately 20% of total volume) _
Other parameters
SAIDAI i . (surface area to drainage area ratio from DWQ table)
Diameter of Orificc in. (2 to 5 day temporary pool draw -dawn required)
Design Rainfall
Design. TSS Removal 2 Q0 % (minimum 85% required)
Form SWU-102 Rev 3.99 Page t of 4

Footnotes:
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 detertnine 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.
U. 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 justifieation.
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.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If requited, 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.
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.
C r"bitT481-6
uM m. A mechanism is specified which will drain the basin for maintenance or an emergency.
M. 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 0�ay's fiot
This system (check one) 0 does does not
incorporate a vegetated fflter at the outtlet
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 (Le.
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 3.'7 5 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 3.0 feet in the forebay, the sediment shall be removed.
Sediment
Bottom
El. 3 5
on
FOREBAX
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 30LO
0
Sediment Removal Elevation 34..25
Bottom Elevation 3 3'
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 bean.
5. 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-lot Rev 3.99 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 prior to any
changes to the system or responsible party.
Print name: Qa,)',d 'F—clwo.eAs
Tide:,,_ U � c e ?res,��e ✓� {- ,_ __ ,_,_,
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 Otts, a Notary Public for the State of D►-I OrirQL'CL,
County of do hereby certify that >ajrl ��,�a- 5% _w
personally appeared before me this [ 5�' day of r oo ,and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official sea[,
SEAT.
My commission expires LO -15 -,:Ruh4
Form SWU-102 Rev 3.99 Page 4 of 4

13
Permit No.� U 2 &
(to be provided by DWQ) .
State of North Carolina
Department of Environment and Natural Resources
Division: of Water Quality
STORMWATER MANAGEArEVT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This fnrrrt may be photocopied for use as an original
DW Stormwater. Management Plan Review:
A complete storanwater 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.
L PROJECT INFORMATION
Project Name: WidlAQ?vex Qn
Contact Person: 1Da1,1A C-Awar,&S Phone Number: (qt0 ) r'1Err, - 020
For projects with multiple basins, specify which basin this worksheet applies
elevations
Basin Bottom Elevation ft_ (floor of the basin)
Permanent Pool Elevation 3'7. 5 _ ft. (elevation of the orifice)
Temporary Pool Elevation ft (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 0 sq. ft. (water surface area at the orifice elevation)
Drainage Area I. 1 q99 ^ ac. (on -site and off -site drainage to the basin)
Impervious Area Q. GQ'32 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume 13�g I t cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume 2 cu. ft. (volume detained above the permanent pool)
Forebay Volume (00 cu. ft. (approximately 20% of total volume)
Other parameters
SA/DAS 5. 03 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 1.0 in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 1.0 in.
Design TSS Removalq0 % (minimum 85% required)
Form SWU-IO2 Rev 399 Page 1 of 4

.7
Footnotes:
l when using the Division SAMA 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 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 NCD NR $MP 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 Lf the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been suet, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and b 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.
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 5:1 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.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
L U the basin is used for sediment and.erosion control during construction, clean out of the
PoRTAa., basin is specified prior to use as a wet detention basin.
e+nP m. A mechanism is specified which will drain the basin for maintenance or an emergency,
III. WET DETENTION BASIN OPERATION AND XIAINTEN.A.NCE 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 Z
-not incorporate a vegetated filter at the outlet.
This system (check one) 0 does not incorporate pretreatment other than a forebay.
Form SW -lot Rev 1.99 Page 2 of 4

r '.
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 S 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
groper 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 0. Ga s feet in the maize pond, the sediment shall be removed.
When the permanent pool depth reads l j,;�5 feet in the forebay, the sediment shall be removed.
Sediment Removal F.3. 3! .`575
BoMOM
FOREBAY
BASIN DIAGRAM
(fill in the bkue )
Permanent Pool Elevation 3'7.5
Sediment Removal Elevation
34. y7s
Bottom Elevation 34.0
ff :vff. ' • 3
5. Remove cattails and other indigenous wetland plants when they cover 50%a 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.
Farm SWU-102 Rev 3.99
Page 3 of 4

j
7. All components of the wet detention basin, system.shalk 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 prior to any
changes to the system or responsible party.
Print name: Dn �, ; d CAwo&AS
Title: , e t�fe$;d ✓i
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, `i o r !4 L . lib usft'" , a Notary Public for the State ofLCaan�',y��,
County of _&-04m ZILL __, do hereby certify that .� ._ 1�aU i4 EaLOgMc 6
personally appeared before me this 154^ day of �l�e, cs• mhea- , saQt� IS_, and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
4- id cu-&*Jrl SEAL
My commission expires to -15j • aOO4
Form SWU-102 Rev 3.99 Page 4 of 4