SW8000416_CURRENT PERMIT_20010219

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW OLfl�%
DOC TYPE
p CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

North,Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
Michael F Easley, Governor
William G. Ross, Jr., Secretary
February 19, 2001
Mr Donald Safrit, Vice President
Horizontal Development
LaDane Williamson Company
10155 Beach Drive
Calabash, NC 28467
MAI
4•.
NCDENR
NORTH CAROLSNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject Permit No SW8 000416
Strand River
High Density Subdivision Stormwater Project
Brunswick County
Dear Mr Safiit
The Wilmington Regional Off ce received a complete Stormwater Management Permit Application Far Strand River
on February 9, 2001 Staff review of the plans and specifications has determined that the protect, as proposed, will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding Permit No
SW8 000416, dated February 19, 2001, for the construction of the project, Strand River
This permit shall be effective from the date of issuance until February 19, 2011, and shall be subject to the
conditions and limitations as specified therein Please pay special attention to the Operation and Maintenance
requirements in this permit Failure to establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-7447 Unless such demands
are made this permit shall be final and binding
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me
at (9I0) 395-3900
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/ arl S IWQSISTORMWATIPERMIT1000416 FEB
cc Brandon Finch / Amos Clark, P E
Calabash Building Inspections
_Linda Lewis
' Wilmington Regional Office
L Central -Files ­ — ` "-
127 Cardinal Dr Ext, Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer j 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No SW8 000416
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
LaDane Williamson Company
Strand River
Brunswick County
FOR THE
construction, operation and maintenance of 4 wet detention ponds, 2 sand filters and a curb outlet system, 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
"]"his pei mit shall be effective from the date of issuance until February 19, 2011 and shall be subject to the following
specified conditions and limitations
I DESIGN STANDARDS
This pei nit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data
This stormwater system has been approved for the management of stormwater runoff as described on pages
4 and 5 of this permit, the Project Data Sheets The subdivision is permitted for 709 lots, each allowed a
maximum amount of built -upon area as follows
315 Lots between Gray Bridge Road and Shallotte River @7,000 ft2
4 lots along Street "X" @ 10,600 ft2
389 Lots between Gray Bridge Road and NC 130 @4,500 ft2
5 lots along Street "AE" @8,100 ft2
Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the peimit
2

State Stormwater Management Systems
Permit No SW$ 000416
4 This project proposes a curb outlet system to serve the low density single family portions Each designated
curb outlet swale shown on the approved plan must be maintained at a minimum of 140' long with 5 1 (B V)
side slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in
a non -erosive manner, and maintain a dense vegetated cover
5 No piping within the low density part of this project shall be allowed except those minimum amounts
necessary to direct runoff beneath an impervious surface such as a road or under driveways to provide access
to lots, or those pipes shown on the approved plans directing runoff to one of the approved engineered
systems
6 Runoff conveyances within the low density part of this project, other than the curb outlet system swales,
such as perimeter ditches, must be vegetated with side slopes no steeper than 3 1 (PI V)
7 The overall tract built -upon area percentage for the project must be maintained at 30%, per the requirements
of Section 1005 of the stormwater rules The ponds and sand filters are designed to treat runoff from the
high density, piped portions of this overall low density project

State Stormwater Management Systems
Permit No SW8 000416
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Strand River
Permit Number
SW8 000416
Location
Brunswick County
Applicant
Mr Donald Safrit, Vice President, Horizontal Development
Mailing Address
LaDane Williamson Company
10155 Beach Drive
Calabash, NC 28467
Application Date
December 18, 2000
Name of Receiving Stream
Shallotte River / Sharron Creek
Index 4
LBR 15-25-2-7 5 / 15-25-2-9-2
Classification of Water Body
"SC HQW"
Design Storm
III
Wet Detention Pond Number
1 2
3
4
Hotel & Apts MF on St V MF on St A Clubhouse & Inn
Pond Depth, feet
3 5 3
4
3 5
Permanent Pool EIevation, FMSL
20 20
8
9
Drainage Area, acres
146 6 18
179
69
3 otal I mpet vious Surfaces, ft2
396,222 134,600
374,180
150,282
Buildings, ft'
103,689 30,523
139,527
28,472
Roads/Parking, ft'
229,979 85,885
190,432
74,090
Sidewalk, ft'
32,496-------
-------
3,739
Cartpath, ft'
------- 1,964
8,634
11,465
Offsite Area entering Pond, ft2
None, per Engineer
Requiied Surface Area, ft'
39,622 15,075
32,272
15,028
Provided Surface Area, ft'
41,393 15,991
32,414
15,707
Requned Storage Volume, ft'
32,366 11,217
31,311
12,524
Provided Storage Volume, ft'
112,671 35,711
32,707
17,507
Temporary Storage Elevation, FMSL
225 22
9
98
Controlling Orifice
2 511� 1 5"�
3"(�
2"(j pipe
4

State Stormwater Managemcnt Systems
Permit No SW8 000416
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Strand River
Permit Numbei
SW8 000416
Location
Brunswick County
Applicant
Don Safrit, Vice President Horizontal Development
Mailing Address
LaDane Williamson Company
10155 Beach Drive
Calabash, NC 28467
Application Date
January 30, 2001
Name of Receiving Stream / Index #
Shallotte River / 15-25-2-7 5
Classification of Water Body
"SC HQW"
If Class SA, chloride sampling results
n/a
Design Storm
1"
Sand Filter Number
1 2
Apartments Road & Tunnel
Sediment Chambei/ Sand Filter Depth
18" 1811
Bottom Elevation, FMSL
225 165
Drainage Area, acres
3 52 428
Total Impervious Surfaces, ft7
105,210 31,349
Apartments, ft'
38,887--------
Roads/Parking, ft'
60,990 31,349
Sidewalk, ft'
5,333-------
Offscte Area entering Pond, ftz
none
Required Suiface Area, each chamber, ft'
360 360
Provided Surface Area, ft'
4,125 7,617
Required Storage Volume, ft3
3,802 4,622
Provided Storage Volume, ft3
10,616 18,566
Top of Sand Filter Elevation, FMSL
24 18
Controlling Orifice
6"� pipe 6"� pipe
5

State Stormwater Management Systems
Permit No SW8 000416
II SCHEDULE OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown
on the approved plans as part of the stormwater management system without submitting a revision to the
permit and receiving approval from the Division
The permittee is responsible for verifying that the proposed built -upon area for each lot and tract, including
driveways and sidewalks, does not exceed the allowable built -upon area Once the lot transfer is complete,
the built -upon area may not be revised without approval from the Division of Water Quality, and
responsibility for meeting the built -upon area limit is transferred to the individual property owner
3 If an Architectural Review Committee (ARC) is required to review plans for compliance with the BUA
limit, the plans reviewed must include sidewalks, driveways, outbuildings, patios, porches, etc Any
approvals given by the ARC do not relieve the homeowner of the responsibility to maintain compliance with
the permitted BUA limit
4 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 propei ty
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan
5 The Director may determine that other revisions to the project should require a modification to the permit
6 The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requit ements ofthe permit Within the time frame specified in the notice, the permittee shall submit a written
tune 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
7 All elements of the permitted stormwater management system, including wet detention ponds, sand filters,
and curb outlet swales, shall be constructed in their entirety, vegetated and operational for their intended use
prior to the construction of any built -upon surface
8 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately
9 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
10 Decorative spray fountains will not be allowed in any stormwater treatment system
1 I 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
T

State Stormwater Management Systems
Permit No SW8 000416
12 Unless specified elsewhere, permanent seeding requirements for the stormwater controls must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual
13 Prior to transfer of the permit, the stormwater faciliteis must be inspected by DWQ personnel, and
determined to be in compliance with all permit conditions Any items not in compliance must be repaired
or replaced to design condition prior to the transfer Records of maintenance activities performed to date will
be requited
14 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 to its entirety and maintenance must occur at the scheduled intervals including, but not limited
to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and revegetation of side slopes
d Immediate repair of eroded areas
e Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of curb outlet swales, sand filters, outlet structure, orifice devicc,s,
catch basins and piping
g Access to the outlet structure must be available at all times
15 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
16 Pi for to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to the
amount as shown on the Project Data Sheet, per Section I, Part 2 The recorded statements must follow the
form
a "The maximum built -upon area per lot is see below square feet This allotted amount includes any
built -upon area constructed within the lot property boundaries, and that portion of the right-of-way
between the front lot line and the edge of the pavement Built upon area includes, but is not limited
to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not
include raised, open wood decking, or the water surface of swimming pools "
315 Lots between Gray Bridge Road and Shallotte River @7,000 ftz
4 lots along Street "X" @10,600 ftz
389 Lots between Gray Bridge Road and NC 130 @4,500 ftz
5 lots along Street "AE" @8,100
b "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State "
"Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State "
d "Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their
allowable built -upon area due to more stringent CAMA regulations "
7

State Stormwater Management Systems
Permit No SW8 000416
e "All runoff from the impervious surfaces associated with the designated high density areas must
dram into the appropriate permitted stormwater management system, as indicated on the approved
drainage area map "
"Filling in, piping or altering any designated 5 1 curb outlet swale associated with the development
is prohibited by any persons "
g "A 30' vegetated buffer must be maintained between all built -upon area and the Mean High Water
line of surface waters "
h "All roof drains shall terminate at least 30' from the Mean High Water mask of surface waters and
tidal wetlands "
17 A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
recording the plat, and prior to selling lots The recorded copy must bear the signature of the Permittee, the
deed book number and page, and stamp/signature of the Register of Deeds
18 This permit shall become voidable unless the facilities are constructed in accordance with the conditions of
this permmt, the approved plans and specifications, and other supporting data
19 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
20 Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and parking areas, but does not include raised, open wood decking, or the water surface of
swimming pools
21 Each lot in the low density port of this subdivision covered by this permit will maintain a minimum 30 foot
wide vegetative buffer between all impervious areas and surface waters
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 "Name/Ownership Change Form" must be submitted to the Division
of Water Quality accompanied by appropriate documentation from the parties involved, such as a copy of
the deed of trust Other supporting materials, such as a signed Operation and Maintenance plan in the case
of engineered systems, will also be required The project must be in good standing with DWQ The approval
of this request will be considered on its merits and may or may not be approved
2 Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems
D

State Stormwater Management Systems
Permit No SW$ 000416
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
6 Peimittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours
The pei mittee shall notify the Division of any name, ownership or mailing address changes within 30 days
Permit issued this the 19th day of February, 2001
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T Stevens, Director
'3f -0-h Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SWS 000416
6

State Stormwater Management Systems
Permit No SW8 000416
Strand River Page I of 2
Stormwatci Permit No SW8 000416
Brunswick County
Designer's Certification
1, , as a duly registered III
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 ofmy 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
I lie checklist of items on page 2 of this form are a part of this Certification
Noted deviations from approved plans and specifications
Signature
Registration Number
Date
SEAL
10

State Stormwater Management Systems
Permit No SW_8 000416
Certification Requirements
Page 2 of 2
I 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 `I he outlet/bypass structure elevations are per the approved plan
5 The outlet structure is located per the approved plans
6 Tiash rack is provided on the outlet/bypass structure
7 All slopes aie 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 perm fitted amounts of surface area and/or volume have been provided
] 1 Required diawdown 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, a forebay, and the vegetated filter
14 The overall dimensions of the system, as shown on the approved plans, are provided
cc NCDENR-DWQ Regional Office
Calabash Building Inspections

State Stormwater Management Systems
Permit No SW8 000416
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 piovisronsofArticle 21 ofChaptei 143, General Statutes ofNoith Carolina as amended, and
otheI applicable Laws, Rules, and Regulations
PERMISSION IS I IE E-BY GRAN I ED 10
1 aDane Williamson Company
Strand Raver
Brunswick County
FOR THE
can,,Ouc0on, 0pciat1011 and maintenance of 4 wet detention ponds, 2 sand filters and a curb outlet system, in
compliance with the provisions of 15A NCAC 21-1 1000 (heicafter referred to as the "vtoamwate) rule%") and the
appi oved 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 pact of this permit
Thi,, permit shall be effective from the date of issuance until February 19, 2011 and shall be subject to the following
specified conditions and limitations
I DESIGN STANDARDS
"1 hi,, pcinut is eficcttve only with respect to the nature and volume of stormwater descirbed in the
application and other supporting data
I'hi,,stormwater systein has been approved for the management of stor mwater r unof f as desci abed on pages
4 and 5 of this permit, the Project Data Sheet,, The subdivision is permitted for 709 lots, each allowed a
maximum amount of built -upon area as follows
315 Lots between Gray Bridge Road and Shallotte River @7,000 W
4 lots along Street "X" @10,600 ft2
389 Lots between Gray Bridge Road and NC 130 @4,500 ft2
5 lots along Street "AF" @8,100 ft2
3 Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the per InIt
►A

State Stormwatei Management Systems
Permit No SW8 000416
4 1 his piolect proposes a curb outlet system to sei ve the low density single lamily poi tions Mach designatcd
cut b outlet swale shown on the approved plan must be maintained at a minimum of 100' long with 5 1 (11 V)
side slopes or (latter, have a longitudinal slope no steeper than 5%, carry the flow from a 10 yeat storm in
a non -erosive manner, and maintain a dense vegetated cover
No piping within the low density part of this project shall be allowed except those mtntmum amounts
necessary to du ect runoff beneath an impervious surface such as a i oad of under dt iveways to pi ovide access
to lots, of those pipes shown on the approved plans directing runoff to one of the approved engineeied
tiy5tcros
G Runoff conveyances within the low density patt of this piolcet, other than the curb outlet system swales,
such as pet imeter ditches, must be vegetated with side slopes no steeper than 3 1 (Fl V)
1 he over all tract built -upon area percentage foi the pioject must be maintained at 30%, per the i cqun ements
of Section 1005 of the stormwater rules Che ponds and sand filters are designed to treat mnof f from the
high density, piped portions of this overall low density project

State Stormwater Management Systems
Permit No SW8 000416
DIVISION OF WATER QUALITY
PROJECT DATA SHEEP
Project Nannc
Strand River
Permit Number
SW8 000416
Location
Brunswick County
Applicant
Mr Donald Safiit, Vice Piesident,
lloliiontal DLVc,IopnlLnt
Mailing Addicss
LaDane Williamson Company
10155 Beach Drive
Calabash, NC 28467
Application Date
December 18, 2000
Name of Receiving SticdM
Shallotte Rivei / Shaiion Creek
Index #
LBR 15-25-2-7 5 / 15-25-2-9-2
Classification of Water Body
"Sc I-IQW"
Design Storm
l "
Wet Detention Pond Number
1 2
3
4
Hotel & Apts MF on St V MF on St A Clubhouse & Inn
Pond Depth, feet
3 5 3
4
3 5
Permanent Pool llevation, FMSL
20 20
8
9
Drainage Area, acres
146 6 18
179
69
'I'otal Impeiviou5 Surfaces, ft2
396,222 134,600
374,180
150,282
Buildings, ftz
103,689 30,523
139,527
28,472
Roads/Parking, ft2
229,979 85,885
190,432
74,090
Sidewalk, ft2
32,496-------
-------
3,739
Cal tpath, ft2
------- 1,964
8,634
11,465
OlNite Area entering Pond, ft2
None, per Engineer
Rcqulicd Surfacc Aiea, ft2
39,622 15,075
32,272
15,028
Provided Surfacc Area, ft2
41,393 15,991
32,414
15,707
Required Stoi age Volume, ft'
32,366 11,217
31,311
12,524
Piovided Stoiage Volume, ft3
112,671 35,711
32,707
17,507
1 empoiaiy Storage Elevation, FMSL
225 22
9
98
Conti olIing Oiificc
2 5"� 1 51r�
311�
2"4 pipe
4

State Stoimwater Management Systems
Permit No SW8 000416
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name Strand River
Permit Numbei SW8 000416
Location Biunswick County
Applicant Don Safrit, Vice President Horizontal Development
Mailing Addiess LaDane Williamson Company
10155 Beach Drive
Calabash, NC 28467
Application Date
January 30, 2001
Name of Rcc,c,iving Sticam / Index 4
Shallottc Rivei / 15-25-2-7
5
Classification of Water Body
"SC 1-IQW"
If ClasI, SA, chloiide sampling results
nla
Design Storm
1"
Sand 1 iltei Numbel
1
2
Apartments Road & "Funnel
Sediment Chambci/ Sand Iiiltei Depth
18"
18"
Bottom F-levation, FMSL
225
165
Di amage Ai ca, acres
3 52
428
1 otal Impervious Surfaces, ft2
105,210
31,349
Apaitments, It2
38,887
--------
Roads/Parking, ft2
60,990
31,349
Sidewalk, ft2
5,333
-------
Off site Ai ca entci ing Pond, ft2
none
Requued Suriac,e Area, each chamber, ft2
360
360
Provided Suiface Area, J12
4,125
7,617
Requited Stoiagc Volume, ft3
3,802
4,622
IllovidedStoiage Volume, ft3
10,616
18,566
op of Sand I,iltei Iflevation, FMSL
24
18
Contioliing Orifice
6"� pipe
6"(� pipe
5

State Stormwater Management Systems
Permit No SW8 000416
Ii SCHEDULE OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown
on the approved plans as pat t of the stormwater management system without submitting a ievision to the
permit and iccerving approval from the Division
The pet mittee is responsible for verifying that the proposed built -upon area for each lot and tract, including
dt iveways and sidewalks, does not exceed the allowable built -upon at ea Once the lot tt an4et is complete,
the built -upon area may not be revised without approval from the Division of Water Quality, and
responsibility for meeting the built -upon area limit is transferred to the individual property owner
If an Atchttectural Review Committee (ARC) is required to review plans for compliance with the BUA
limit, the plans reviewed must include sidewalks, driveways, outbuildings, patios, porches, etc, Any
approvals given by the ARC do not relieve the homeowner ofthe responsibility to maintain compliance with
the Pamir Ld BUA limit
4 1 lie following items will requite a modtfic,atton to the permit
a Any tcvtston to the approved plans, regardless of size
b Project name change
c 1'ransfer of ownetshtp
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 propel ty
owned by the permittee, for which Sedimentation and Lroston Control Plan approval was sought
f Puling in, altering, or piping of any vegetative conveyance shown on the approved plan
1 he Director may determine that other revisions to the protect should require a modification to the permit
6 Hie Director may notify the permittee when the permitted site does not meet one or more of the minimum
t equuements of the pet nit Within the time fi ame 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
pt ovtde copies of revised plans and cet tificatton in writing to the Dnectot that the changes have been made
All elements of the permitted stormwater management system, including wet detention ponds, sand filters,
and curb outlet swales, shall be constr acted in their entirety, vegetated and operational for their intended use
pi for to the construction of any built -upon surface
During construction, erosion shall be kept to a minimum and any eroded ar cas of the system will be repaired
immediately
9 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to opet atton 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 spcctficatlons, and other supporting documentation Any deviations from the approved plans and
specifications must be noted on the Certification
10 Decorative spray fountains will not be allowed in any stormwater treatment system
11 If the stormwater System was used as an Erosion Control device, it must be restored to design condition prior
to opelatron as a stormwater treatment device, and prior to occupancy of the facility
Cel

State Stormwater Management Systems
Perin it No S W 8 000416
12 Unless specified elsewhere, permanent seeding requirements for the stoi mwater controls must follow the
guidelines established In the North Carolina Erosion and Sediment Control Planning and Design Manual
13 Prior to transfer of the permit, the stormwater faciliteis must be inspected by DWQ personnel, and
determined to be in compliance with all permit conditions Any items not in compliance must be iepaired
of I eplaced to design condition prioi to the transfer Records of maintenance activities pet foi coed to date will
be icquned
14 1 he permittee Shall at all ti rnes provide the operation and matntenanc,e necessary to ISsule the pet inItted
stoi nnwatei sy,,tern functions at optimum efficiency The appioved Opeiation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and revegetation of side slopes
d Immediate repair of eroded areas
c Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of curb outlet swales, sand filteis, outlet struc.tuie, orifice devices,
catch basins and piping
g Access to the outlet structure must be available at all tirnes
15 Records of maintenance activities must be kept and made available upon icqucst to authoiized personnel
of 1)WQ The records will Ind icate the date, activity, name of person pei fot ruing the work and what actions
were taken
16 Plloi to the salt, of any lot, deed resti iGtioins must be recorded which limit the built -upon area pet lot to the,
amount as shown on the Ptolect Data Sheet, pei Section 1, Part 2 The iecorded statements must follow the
foi nn
"fhe maximum built -upon area per lot is See below squaie feet Hiis allotted amount includes any
built -upon aica c,onstl ucted within the lot property boundai ies, and that poition of the tight -of -way
between the fiont lot line and the edge of the pavement Built upon area includes, but is not limited
to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not
include iaised, open wood decking, of the water surface of swimming pools "
315 Lots between Gtay Bridge Road and Shallotte Rivet a 7,000 ft2
4 lots along Street "X" @10,600 ft2
389 Lots between Gray Bridge Road and NC 130 @4,500 It2
5 lots along Street "A13" @8,100
b "I'lne covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State "
"Alteration of the drainage as shown on the appioved plan may not take place without the
c,onGui rence of the State "
"Lot,, within CAMA's Area of Lnvnonmental Concei n may be subject to a i eduction in their
allowable built -upon area due to more stiingent CAMA Iegulations "
7

State Stoimwater Management Systems
Permit No SW8 000416
e "All runoff from the impervious surfaces associated with the designated high density areas must
drain into the appropriate permitted stormwater management system, as indicated on the appioved
drainage area map "
"Filling in, piping or altering any designated 5 1 curb outlet swalc associated with the development
is prohibited by any persons "
g "A 30' vegetated buffer must be maintained between all built -upon area and the Mean i ligh Watei
line of sut face waters "
11 "All roof drains shall terminate at least 30' from the Mean High Water mai k of surface waters and
tidal wetlands "
17 A copy of the rec,oided deed iestiiclions must bc, submitted to the Division within 30 days of the date of
iecoiding the plat, and prioi to selling lots The recorded copy must bear the signature of the Permittee, the
deed book number and page, and stamp/signature of the Register of Deeds
18 1 his 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
19 A copy of the appioved plans and specifications shall be maintained on file by the Pei mittee foi a minimum
of ten yeats from the date of the completion of construction
20 Built upon area includes, but is not limited to, structures, asphalt, conciete, gravel, brick, stone, slate,
coquina and patking areas, but does not include raised, open wood decking, or the water surface of
swininli1g pools
21 Mach lot in the low density poi t of this subdivision covered by this permit will maintain a minimum 30 foot
wide vegetative buffer between all impervious areas and surface waters
III GENERAL CONDI PIONS
'I lus pei nett is not transferable in the event thei c is a desire for the facilities to change ownership, or they e
is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division
of Water Quality accompanied by appiopriate documentation fiom the pai ties involved, such as a copy of
the deed oftrust Other supporting materials, such as a signed Operation and Maintenance plan in the case
of engiriLLred systems, will also be required I he project must be in good standing with DWQ 1 he approval
of this request will be consideied on its merits and may of may not be appioved
2 I�ailuic 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 1 lie issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or oidinanccs which may be imposed by othei goveinment agencies {lo(.al, state, and federal)
which have jutisdiction
4 In the event that the facilities fail to perform satisfactorily, including the cieation of nuisance conditions,
the Peimittee 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

State Stormwalei Management Systems
Permit No SW8 000416
The permit may be modified, revoked and reissued or terminated for cause The filing of a request for a
pci mit modification, revocation and reissuanec or termination does not stay any permit condition
6 Pcimittee giants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours
Hie per mittec shall notify the Division of any name, ownership of marling address changes within 30 days
Permit issued this the 19th day of February, 2001
NOR fl I CAROLINA ENVIRONMI?NTAI, MANAGLMLNT COMMISSION
Kci r "I' Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000416
01

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I. GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, individual, etc who owns the project)
LaDane Williamson Company, LLC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Donald L Safrit, V P for Horizontal Development
3 Mailing Address for person listed in item 2 above
10155 Beach Drive
City Calabash State NC Zip 28467
Telephone Number [phone]
4 Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc )
Strand River
5 Location of Project (street address)
Between Grey Bridge Road (S R 1134) and N C Hwy 130
City NIA County Brunswick County
6 Directions to project (from nearest major intersection)
From Shallote, NC travel south on N C Highway 130 to Grey Bridge Road (S R l 134) Approximately 2000'
south on Grey Bridge Road (see vicinity map on project plans)
7 Latitude 33 57'30" Longitude 78 21'20" of project
8 Contact person who can answer questions about this project
Name Mr Don Safrit Telephone Number [phone]
U. PERMIT INFORMATION
1 Specify whether project is (check one) ® New ❑ Renewal ❑ Modification
Form SWU-101 Version 3 99 Page I of

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number NIA and its issue date (in 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
Grass swales will be used to treat runoff from roadways in low density areas while wet detention basins and
sand filters will be used in pockets of higher density (>30% impervious) development
2 Stormwater runoff from this project drains to the Lumber River basin
3 Total Project Area 70658 4 Project Built Upon Area 21 86 %
5 How many drainage areas does the project have? 3
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
Basin Information F t
Drainage Area 1
'-' , Drama e Area 2
Receiving Stream Name
SEE ATTACHMENT A
Receiving Stream Class
Drainage Area
Existing Impervious * Area
Proposed Impervious * Area
% Impervious * Area total
Im erviods' * Surface Area w
Drainage Area I
Drainageg Area 2
On -Site Buildings
SEE ATTACHMENT A
On -Site Streets
On -Site Parkin
On -Site Sidewalks
Other On -Site
Off -site
Total
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

,
STRLAND RIVLR ATTACHMENT A B R FINCH Ll
LDW 9900) 2'5lO1
£37:t"W166u*f %utfh a` 11ftak iii a —
Resrdeitrud Areas =
,411315 sinjle faiiuly hnrrre tots in the Strand Rivcr Uescfnpmen! whtch Ire betxceu Giav Bridge Road (SR 1143) and theShallote River
are to be reurrctcrl kr 7000 ST snipers hits each with the cxeyrion of the 4 lors along Slre t X These lots cull hair long drit ewits that
are camervanvely assumed to be 300 jt s 13ft I3600 I) The total unpervious area jnr these tots is therefore 10 600 sf,?oi All of the vnkle
lanult lots nhich lie bemc m !Holden Beach Road th ( Hwy 130) and Giav Bridge Road are to be reWncted io 4500 SF each ii uh the
esLepttoa of the lots at th, eird ofStreer 4E These lots w dA ha} e lon; driveum s that ar a assuured ro add an additional 3 600 sfof irnperi wus
,urface ua described above Die toad imperdw u, area for these , loss is therejore 8100 root
Description
# of Lots Impervious Arta per Lot
lotal Impervious Area ILocation
[SF]
(51
Low Density
311
7000
2177000
Behs�G.3 d a Road $ Shallot- River
Low DenStfy (COLS aloe Street X
4
10600
42400
1 As,uttu a 3011 ft it 12 ft drn ewav m addrtson to 7000 sf of rot senious
ffi h Density
389
4500
1750500
Between bold ni Beach Road and Crrav Bndae Road
High Demur (Lots dlong Street kE)
5
8100
40100
Assume a 300 ft x 12ftdnvt.,.vain-idditionto4�00,zfofimpeniotib
Total # of Lots =
709
lotai Impervious Area from Lots -
4010400 SY
T
9207 AC
lmpervtons Surfaces from Areas treated hi 8UP'v (other than mnsed sn ales) _
SOURCE
S I OPWW A I LR 15MF DLSCRlPTT0Y
1NQ Pond
IN Pond
WQ Pond
WQ Pond
Sand fitter
Sand Filter
1
2
E 3
4
!
2
0
On site Buildinp
103689 ¢
30523
€ 139527
28472
38887
On-41tLPkN(.Ment
190432
74090
60990
31349
On -Sacs Stdcwllk
324%
�0
0
3719
5333
0
Golt Cart Path
1964
8634
11465
0
Iota[lmpes+tnus 4reaShmvn{SFJ—>_
366164
118372
338593
117766
_
105210
31149
�µ acres =>
841
2 72w
777
270
242
072
Contributing Drainage Area (acres)=
14 60
6 18
1789
w w w 690
3 52
428 w
Impervious =
50%
49%
50%
70%
30%
__ ___ _D_esi.;n%
Ran impervious surface allowed (acres) _
_62"o
_ 9 10� ^
3 09 w
859
3 45
246
1 23
Possible Increase of impers wits surface (acres) =
069 T�
T 037
081
0 7s
m 0 OS-
„ i 56
iSOIL Allowable increase to impety ous nma for Sand f&tn ono affect% tuflosa hydrogiaph 4in" S4nd ttlten, arc sized basLd upon wntributmg drdinagc drea
Impervious Surfaces from Areas sn1 treated h3 above RUP s =
On-wfeRoads = 1394089 SF
On -Site Gulf Carl Path = 245342 SF
I OF 2

Sl RAND RIVLR ATTACHMENT A B It F1'�CH, LI
LOW 990(X2'5,01
ttt:• �`alraf:�,{rev,�sn� w
Current planned imp Area =
6727285
Sr (measured using AutoCAD 14)
154 44
AC
Tntal Naject Area —
70658
AC
Current planned 54 Imperi taus =
21 86%
Allonable Impervions Area =
211 97
AC (30% in all non -SA or non-OM4 Haters)
Allowable Increase =
5753
AC
Yale All of dre S NP s hvcd in the ahove ruble are acwgmed to treat rwre mtpenwaq
$r rfarc c Ihan is lured Thtr ri due to thefarr that m0norml tmpen wus i rvJaces mas
& added m f&juturc (ndewalk carrpath ete )
STORI7R ATER BIT
RECE1% LNG STREAM & CLASSMCAT1ON
W-tter Qualtt7 Pond ixl
Sharron Creek ClasSihLd ati C-Sw--HQW
W iter QuahtY Pond tt2
Sh illotc Ri-,cr - Classitic I d,9 SC-HQ�N m
Water uili Pond 93
Shallote River- Clab4tfwd as SC-HQV4
___
Water Quality Pone! r4
WW_
Shallote Rix er - Classttted as SC-HQN'4
Sand Filter' I
¢Sharron Creel. - Clasu iod an C S�
Sand miter 92
Sliallate Ricer - Clacstked as SA
2 01F 2

7 How was the off -site impervious area listed above derived Planimeter and digital computer calculation _
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 allowable built -upon area for each lot must be provided as an attachment
The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number 5W ?000 41(o as issued by the Division of Water Quality These covenants may not be changed
or deleted without the consent of the State
2 No more than
square feet of any lot shall he covered by structures or impervious materials
Impervious materials include asphalt, gravel, concrete, hack, stone, slate or similar material but do not include
wood decking or water surface of swimming pools 4� See 2H2Chh7eit,4
3 Swales shall not he filled in, piped, or altered except av necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a state vtormwater management permit modification
prior to construction
S All pernutted runoff from outparcels or future development shall he directed into the permitted stormwater control
system These connections to the stormwater control system shall he 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 without concurrence
from the State, and that they will be recorded prior to the sale of any lot
V. SUPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMA
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 Bann 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
Form SWU-101 Version 3 99 Page 3 of

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
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
-Origmal 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)
VI1. 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) John T Michael, P E - The John R McAdams Company, Inc _
Mailing Address P O Box 14005
City Research Triangle Park
Phone [phone]
VIII. APPLICANT'S CERTIFICATION
State NC Zip 27709
Fax [phone]
I, (print or type name of person listed in General Information, item 2) J)oA AL.1C> L. Sqr2l_T___ , certify that the
information included on this permit application form is, to the best of my knowledge, correct and that the project will be
constructe conformance with the approved plans, that the required deed restrictions and protective covenants will be
recorde , and Jhat tie proposed project complies �MithAc regVirements of 15A NCAC 2H 1000
Date T o^/ 29 _ 2,000
Form SWU-101 Version 3 99 Page 4 of

Permit No 5�0 9 OUG 4((v
(io be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopies for uve as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances Low density projects should not have a discrete stormwater
collection systems as defined by 15A NCAC 2H 1002(18) Low density requirements and density factors can
be found in 15A NCAC 2H 1005 through 1007
I. PROJECT INFORMATION
Project Name
Contact Person
Number of Lots
Strand River Development
Donald L Saf t
709
Phone Number (910)-579-0733
Allowable Built Upon Area Per Lot*
See Attachment
* If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon
area for each lot The attachment must include the project name, phase, page numbers and provide area
subtotals and totals
II. BUILT UPON AREA
See the Stormwater Management Permit Application for specific language that must be recorded in the deed
restrictions for all subdivisions
For uniform lot sizes, complete the following calculation in the space provided below where
• SA Site Area — the total project area above Mean High Water Wetlands may be excluded when the
development results in high density pockets
• DF Density Factor — the appropriate percent built upon area divided by 100
• RA Road Area — the total impervious surface occupied by roadways
• OA Other Area — the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc
• No Lots — the total number of lots in the subdivision
• BUA/Lot -- the computed allowable built upon area for each lot including driveways and impervious surfaces
located between the front lot line and the edge of pavement
FORM SWU-104 Rev 3 99 PAGE I OF 2

(SA x DF) — RA — OA = BUA
No Lots Lot
Calculation
PLEASE REFER TO ATTACHMENT A
II1. REQUIRED ITEMS CHECKLIST
Applicants Initials
a
b
VYI-- -
d
A 30-foot vegetative buffer is provided adjacent to surface waters Projects in the Neuse
River basin may require additional buffers
Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to sale of any lots
Built upon area calculations are provided for the overall project and all lots
Project conforms to low density requirements within the ORW AEC (if applicable)
[15A NCAC 2H 1007(2)(b)]
FORM SWU-104 Rev 3 99 PAGE 2 OF 2

Permit No SW8 MO 4-(&
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
CURB OUTLET SYSTEM SUPPLEMENT
FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUTTER
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management pernut application, a
curb outlet system supplement, a low density supplement, design calculations, and plans and specifications
showing all stormwater conveyances and curb outlet details
I. PROJECT INFORMATION
Project Name Strand River
Contact Person Donald L. Safrit Phone Number ( 919) 579-0733
Curb outlets to (check one) 9 Swale 0 Vegetated Area
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section
15A NCAC 2H 1008
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached If the applicant has designated an agent on the Stormwater Management Pernut
Application Form, the agent may initial below If a requirement has not been met, attach justification
AppliqqaLi Initials
if a Curb outlets direct flow to a swale or vegetated area
b Swales or vegetated areas receiving curb outlet flow are designed to carry, at a Imnimum,
the peak flow from the 10-year storm
c Flow velocity is non -erosive for peak flow from the 10-year storm event
d Longitudinal slope of the Swale or vegetated area does not exceed 5%
e Side slopes of the Swale or vegetated area are no steeper than 5 1 (horizontal to vertical)
f Length of Swale or vegetated area Is > 100 feet
g The system takes Into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each swale)
h Swales are located in recorded drainage easements
i Grass type(s) for permanent vegetative cover specified on detail
,��j Swale detail provided on plans
Form SWU-105 Ver 3 99 Page 1 of 3

III. DESIGN INFORMATION
Complete the following table If additional space is needed the information should be provided in the same
format as Table 1 and attached to this form Rainfall intensity data can be found in Appendix 8 03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual
Table I Swale Design Information
c,
ff
.Swale No
",'_ '
s i�Y
Drainages
;�n'Aream ac �
t« ' 4 -m s /w ti
ImperviouS
� Area' ac °
'GrassedC,,,,,C
Area a
�Om, , bf `
i c� ' f'"6°E
; f e
4Vv�131
(fps)f
s �
> r„ <
Flow{
,Depth ft
1
2
AND
3
SEE FROJECT
CALCULATIONS
BOO
LET
4
5
5
7
8
9
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Form SWU-105 Ver 3 99 Page 2 of 3

III. CURB OUTLET SYSTEM MAINTENANCE REQUIREMENTS
Mowing will be accomplished as needed according to the season Grass height will not exceed six inches
at any time
2 Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation
3 Accumulated sediment and trash will be removed as necessary Swales will be reseeded or sodded
following sediment removal
4 Eroded areas of the swales will be repaired and reseeded Swales will be revegetated as needed and in a
timely manner based on the monthly inspections
5 Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping
6 Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality
I acknowledge and agree by my signature below that I am responsible for the performance of the six
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 and Title Yo J -k6,u L. :SA r2 t 1 , V ? ho a 1 ?gnu T�u. `LI" _r'p„s•t aW T
Address 10155 Beach Drive, Calabash, North Carolina 28467
phonL 9 )- 579-0733 Date 3129/00
Signaan".�•1G 7..00 0
Note The legally responsible party shgIdnot be hom owners association unless more than 50% of the lots have been sold and
a resident of the subdivision has bee president
I, , a Notary Public for the State of �G , County of
do hereby certify that �Uh4.�C� �. , c�-�S'1�!� —personally appeared before rice this
day of AaJ 2000� , and acknowledge the due execution of the forgoing infiltration basin
maintenance requirements Witness my hand and official seal,
SEAL My commission expires 9- 1D � 200Y
Form SWU-105 Ver 3 99 Page 3 of 3

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a..pn Mt-iltm en4ri an pp. 2 a! IN muppl—rd
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170
107
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087
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0000
171
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07
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172
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030
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CLASSIFICATION
A
A
A
a
A
A
a
a
a
B
A
A
A
El
E
A
a
E
e
A
A
A
A
C
c
0.
A
a
A
El
D
a
A
A
A
A
a
A
a
A
A
A
9
A
A
A
A
A
B
a
A
e
a
A
A
c
e
9
8
A
A
A
A
A
A

NC Department of Environment and Natural Resouces
Division of Water Quality
Curb Outlet System Supplement
For Low Density Development with Curb and Gutter
Design Information Supplement
Table 1 Swale Design Information
Sheet Swale
Number Number
Drainage
Area
(acres)
perviou
Area
(acres)
Grassed
Area
(acres)
Rational
C
Q10
(cfs)
V10, allow
(fps)
V10, actual
(fps)
Flow
Depth
(feet)
C-3A 1
045
015
030
042
1 4
400
217
035
C-3A 2
099
038
061
046
33
400
209
056
C-3A 3
1 11
019
092
029
23
400
350
036
C-3A 4
049
018
031
044
1 6
400
226
037
C-3A 5
062
035
027
060
27
400
258
046
C-3A 6
144
082
062
061
63
400
319
063
C-3C 8
010
005
005
055
04
400
207
020
C-3A 12
061
022
039
043
19
400
1 83
046
C-3A 13
1 01
031
070
040
29
400
202
053
C-3A 14
084
013
071
027
1 7
400
1 76
043
C-3A 40
059
013
046
033
14
400
1 69
041
C-3A 41
031
005
026
028
06
400
1 38
030
C-3A 42
018
008
010
051
07
400
1 63
028
C-3A 43
033
Oil
022
042
10
400
1 55
036
C-3A 44
033
014
019
049
1 2
400
210
033
C-3A 45
061
035
026
061
27
400
267
045
C-3A 46
1 16
081
035
071
59
400
365
045
C-3A 47
063
044
019
071
32
400
350
043
C-3A 48
064
038
026
063
29
400
203
053
C-3A 49
1 02
050
052
054
40
400
332
049
C-3A 50
1 06
086
020
080
61
400
244
071
C-3A 51
037
020
017
057
1 5
400
1 73
042
C-3A 97
079
057
023
072
41
400
221
061
C-3A 98
032
009
023
038
09
400
1 50
034
C-3A 99
094
051
043
058
40
400
284
053
C-3A 100
028
010
018
043
09
400
1 95
030
C-3A 101
1 58
1 05
053
068
78
400
392
063
C-3A 102
093
035
058
045
30
400
205
054
C-3A 103
025
010
015
048
09
400
1 95
030
C-3A 104
018
007
Oil
048
06
400
1 43
029
C-3A 174
019
009
Oil
051
07
400
1 84
028
C-3A 175
041
021
020
056
17
400
229
038
C-3A 176
1 51
017
134
024
26
400
1 98
051
C-3A 177
091
061
030
069
45
400
370
039
C-3A 178
1 30
121
009
089
84
400
2651
080

INC Department of Environment and Natural Resouces
Division of Water Quality
Curb Outlet System Supplement
For Low Density Development with Curb and Gutter
Design Information Supplement
Table 1 Swale Design Information
Sheet Swale
Number Number
Drainage
Area
(acres)
perviou
Area
(acres)
Grassed
Area
(acres)
Rational
C
010
(cfs)
Via allow
(fps)
V10 actual
(fps)
Flow
Depth
(feet)
C-38 52
108
062
046
0 61
4 8
400
229
0 64
C-313 53
013
0 06
007
049
0 5
400
1 28
027
C-313 54
079
051
028
067
38
400
291
051
C-38 55
1 57
056
102
043
4 9
4 00
3 66
033
C-313 56
0 83
0 52
0 31
066
3 9
400
329
039
C-36 57
1 15
0 53
062
0 52
4 3
400
290
0 54
C-38 58
0 33
015
018
0 52
1 2
400
247
032
C-3B 59
127
0 65
0 62
056
51
400
303
058
C-38 60
072
040
032
0 59
31
400
205
0 54
C-313 61
065
036
0 30
0 59
27
400
3 51
039
C-38 62
062
0 38
024
0 64
28
400
305
043
C-313 63
017
007
0 10
0 50
0 6
400
207
024
C-38 64
057
026
0 31
0 51
2 1
400
1 87
047
C-313 65
014
007
007
0 56
0 6
400
279
020
C-3B 66
065
042
023
067
3 1
400
347
042
C-38 67
025
012
013
0 55
1 0
400
3 21
025
C-38 68
1 10
048
062
050
4 0
400
358
0 37
C-38 69
144
0 91
0 53
0 66
68
400
377
047
C-313 70
1 82
072
1 10
047
61
400
2 44
0 71
C-36 71
076
0 46
030
0 63
34
400
2 74
0 50
C-313 72
032
029
004
0 86
2 0
400
2 39
041
C-313 73
0 96
042
0 54
0 50
3 5
400
275
0 50
C-38 74
0 33
017
016
0 56
1 3
400
1 67
040
C-36 75
1 05
0 01
1 04
016
12
400
162
038
C-3B 76
017
008
010
050
06
400
208
024
C-313 77
0 56
013
043
034
1 4
400
1 68
040
C-38 78
0 29
012
017
048
1 0
4 00
235
029
C-313 79
065
040
025
0 64
3 0
400
2 04
0 54
C-313 80
048
034
0 14
072
2 5
400
375
024
C-38 81
1 12
0 60
0 52
0 58
4 7
4 00
296
056
C-3B 82
065
0 34
031
0 57
27
400
198
052
C-313 83
033
0 12
021
0 44
1 0
400
157
037
C-313 84
0 81
038
043
053
31
400
205
0 55
C-38 85
019
008
0 11
049
0 7
400
2 57
023
C-313 86
035
015
020
049
1 2
400
248
032
C-313 87
037
0 17
020
0 52
1 4
400
2 54
0 33
C-313 88
042
016
026
045
1 4
400
1 55
042
C-38 89
024
0 10
0 14
046
0 8
400
221
027
C-3B 90
1 28
066
0 62
0 56
5 2
400
235
0 67
C-313 91
131
070
061
058
54
400
237
068
C-313 92
037
016
0 21
050
1 3
4 00
2 51
0 32
C-38 93
147
063
0 84
049
520
400
375
053
C-313 94
0 84
0 58
0 26
0 71
424
400
223
062
C-3B 95
109
0 50
059
0 52
4 06
4 00
2 57
0 56
C-313 961
027
Oil
016
0481
0 93
400
1 52
035

NC Department of Environment and Natural Resouces
Division of Water Quality
Curb Outlet System Supplement
For Low Density Development with Curb and Gutter
Design Information Supplement
Table 1 Swale Design Information
Sheet Swale
Number Number
Drainage
Area
(acres)
perviou
Area
(acres)
Grassed
Area
(acres)
Rational
C
010
(cfs)
V10 allow
(fps)
Vto, actual
(fps)
Flow
Depth
(feet)
C-3C 7
012
007
006
062
05
400
223
022
C-3C 9
030
023
007
076
16
400
1 76
043
C-3C 10
013
007
006
058
05
400
1 34
029
C-3C 11
129
084
045
067
62
400
371
058
C-3C 15
047
016
031
042
14
400
220
036
C-3C 16
028
012
016
049
10
400
266
027
C-3C 17
088
051
037
061
39
400
367
046
C-3C 18
148
085
063
061
65
400
248
072
C-3C 19
023
Oil
012
053
09
400
1 51
034
C-3C 20
049
0 13
036
036
1 3
400
1 65
039
C-3C 21
141
077
064
059
60
400
243
070
C-3C 22
038
029
009
076
21
400
1 87
047
C-3C 23
078
048
030
064
36
400
214
058
C-3C 24
039
024
015
064
18
400
234
039
C-3C 25
1 56
081
075
057
64
400
378
037
C-3C 26
072
026
046
044
23
400
247
043
C-3C 27
024
013
Oil
058
10
400
262
028
C-3C 28
1 59
054
105
042
48
400
298
057
C-3C 29
080
057
023
072
41
400
373
047
C-3C 30
036
016
020
051
1 3
400
216
035
C-3C 31
053
013
040
035
1 3
400
1 67
040
C-3C 32
142
070
072
054
56
400
309
060
C-3C 33
079
046
033
062
35
400
234
055
C-3C 34
140
076
064
058
59
400
242
070
C-3C 35
079
037
042
052
30
400
265
047
C-3C 36
062
047
015
076
03
400
1 38
022
C-3C 37
087
056
031
066
42
400
327
051
C-3C 38
059
047
012
079
34
400
273
050
C-3C 39
0351
015
020
0491
124
400
213
034

NC Department of Environment and Natural Resouces
Division of Water Quality
Curb Outlet System Supplement
For Low Density Development with Curb and Gutter
Design Information Supplement
Table 1 Swale Design Information
Sheet Swale
Number Number
Drainage
Area
(acres)
perviou
Area
(acres)
Grassed
Area
(acres)
Rational
C
Q10
(cfs)
V10 allow
(fps)
V10 actual
(fps)
Flow
Depth
(feet)
C-313 136
050
035
015
071
26
400
255
045
C-3D 137
072
041
031
061
31
400
207
055
C-3D 138
1 16
070
046
063
53
400
236
067
C-31) 139
073
051
022
071
37
400
216
059
C-3D 179
054
030
024
059
23
400
1 91
049
C-3D 180
066
026
040
047
22
400
246
042
C-3D 181
062
027
035
050
22
400
1 90
048
C-3D 182
068
027
041
047
23
400
1 91
049

NC Department of Environment and Natural Resouces
Division of Water Quality
Curb Outlet System Supplement
For Low Density Development with Curb and Gutter
Design information Supplement
Table 1 Swale Design information
Sheet Swale
Number Number
Drainage
Area
(acres)
pervlou I
Area
(acres)
Grassed
Area
{acres{
Rational
C
Q,@
{cfs)
Via wk-
lips)
via ...w
(fps)
Flow
Depth
(feet)
C 3E 106
0 34
021
013
064
Is
400
226
0 37
C3E 106
Oil
007
004
066
0 5
400
200
023
C 3E 107
070
037
0 33
052
30
400
204
0 54
C3E 108
089
049
040
059
38
400
281
052
C3E 109
035
029
006
081
20
400
297
037
C3E 110
042
023
019
059
18
400
233
039
C3E 111
0at
054
027
068
40
400
219
080
C3E 112
032
012
020
046
10
400
157
036
C3E 113
lie
085
051
060
50
400
301
068
C3E 114
131
065
ass
ass
52
4D0
393
051
C-3E 115
0 22
0 10
012
0 51
08
400
148
033
C3E i18
049
032
a17
087
24
400
250
044
C3E 117
118
084
034
072
81
400
244
071
C-3E 118
age
063
0 35
066
47
400
304
032
0-3E 119
0 26
oil
0 is
049
09
4 00
2 29
020
C3E 120
072
055
017
078
39
400
219
080
C3E 121
112
074
0 38
0 68
55
400
377
0 35
C3E 122
1 17
0 Be
ass
055
46
400
228
064
C3E 123
ass
0 52
003
0 91
36
400
342
046
C-3E 124
021
008
013
045
07
400
141
031
"E 125
049
023
026
0 53
19
400
274
037
C3E 126
025
0 14
0 12
058
1 1
400
208
032
C3E 127
037
006
031
055
05
400
173
023
C3E 128
022
013
009
062
10
400
283
028
C 3E 129
0 23
0 15
008
067
1 1
400
ISO
0 37
C 3E 130
045
022
0 23
0 64
is
400
327
033
C 3E 131
127
0 77
0 50
064
50
400
304
043
C3E 132
103
0 64
049
057
42
400
364
0 38
"E 133
013
0 08
007
0 52
06
400
256
020
C3E 134
0 44
0 29
0 15
0 88
21
400
325
0 35
C3E 135
100
0 85
035
067
4 8
4 00
2 30
065
C 3E 140
0 48
0 24
0 24
055
is
400
182
046
C 3E 141
0 48
035
0 13
0 73
2 5
4 DO
196
0 51
C3E 142
0 77
028
049
044
24
4 00
194
0 50
C3E 143
051
0 22
0 29
050
to
400
180
045
C-3E 144
144
093
051
067
89
400
252
074
C3E 145
070
0 29
0 41
048
24
400
194
0 50
C3E 148
0 68
0 50
0 18
076
38
400
2 14
ass
C-3E 147
0 50
023
0 27
052
1 9
400
102
046
C3E 148
0 12
0013
006
ass
0 6
4 00
217
0.21
C3E 149
0 i9
009
0 10
053
07
4 00
186
0 2a
C3E 160
107
070
037
067
52
4 00
349
064
C-3E 151
007
002
005
0 3a
02
400
103
019
C 3E 152
028
015
013
0 5B
12
400
209
033
C3E 153
0 22
044
-022
175
28
400
260
048
C3E 154
042
0 23
0 19
0 59
Is
4 00
1 79
045
C3E 155
043
017
0 28
0 47
14
4 00
257
0 33
C3E 156
0 36
020
Ole
059
15
4 00
173
042
C3E 157
158
097
0so
085
73
400
331
068
C3E 158
080
036
044
051
29
400
203
054
C 3E 159
038
024
012
ass
1 8
400
179
0 44
C3E 180
115
063
052
ass
49
400
231
085
C-3E 181
127
068
0 59
ass
5 3
4 00
236
0 67
C.9E 162
032
0 17
015
0 58
13
400
224
0 34
C3E 163
031
0 17
014
059
1 3
400
203
036
C3E 104
110
079
031
072
57
400
382
044
C 3E 165
113
0 87
048
062
51
400
233
066
C3E 168
096
039
057
048
33
400
209
O58
C3E 187
too
0 64
038
0 Be
4 8
4 00
2 88
058
C3E 188
1 11
057
0 54
ass
4 5
4 DO
319
0 53
C-3E 189
068
033
0 23
062
25
4 00
244
045
C3E 170
094
045
049
053
36
400
278
0 51
C3E 171
0 59
0 37
0 22
0 66
28
4 00
244
0 48
C3E 172
0 57
0 22
0 35
0 46
1 BB
4 00
lag
0 45
C3E 173
0 17
0 09
008
057
0 70
4 00
1 42
0 31

PermitNo
(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 photocopies 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 (please complete the following information)
Project Name Strand River Development
Contact Person Donald L Safrit Phone Number [phone]
For projects with multiple basins, specify which basin this worksheet applies to ^Water Quality Pond #1
elevations
Basin Bottom Elevation
1600
ft
Permanent Pool Elevation
2000
ft
Temporary Pool Elevation
2250
ft
areas
Permanent Pool Surface Area
41,393
sq ft
Drainage Area
1460
ac
Impervious Area
910
ac
volumes
Permanent Pool Volume
130,723
cu ft
Temporary Pool Volume
1122671
cu ft
Forebay Volume
25,898
cu ft
other parameters
SA/DA1
643
Diameter of Orifice
25
in
Design Rainfall
l
in
Design TSS Remova12
90
%
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume ofmam basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage area ratio from DWQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required))
FORM SWU-102 Rev 3 99 PAGE 1 OF 4

Footnotes
I 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 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
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
V.�
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 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 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
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)
This system (check one)
❑ does N does not incorporate a vegetated filter at the outlet.
❑ does N does not incorporate pretreatment other than a forebay.
FORM S W U-102 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 a 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 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 3 00
When the permanent pool depth reads 3 00
Sediment emoval El 17 00 75
Bottom evation 16 00 2�
FOREBAY
feet in the main pond, the sediment shall be removed
feet in the forebay, the sediment shall be removed
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 20 00
Sediment Removal Elevation 17 00
-----------------------------------
Bottom Elevation 16 00
MAIN POND
75%
25% 1
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 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 Donald L Safrit
Title V P for Horizontal Development
Address 10155 Beach Drive, Calabash, North Carolina 28467
Phone
Signatu
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, :bAa+ here, -13 , a Notary Public for the State of North Carolina
County of j 72u A,& w 3 c,k , do hereby certify that a real & )' ..%. -F r: +
personally appeared before me this ly day of 17cc.arr.lme e , 2000 and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
OFFICIAL
Nnlftry Pubk SEAL
C,OUM
M DOROTI�-K B° O n
Y Commrssion �xAires n}uy
SEAL
My commission expires DG- 01- aoD4
FORM SWU-102 Rev 3 99 PAGE 4 OF 4

Permit No `R F0Wl&
(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 photocopies 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 (please complete the following information)
Project Name Strand River Development
Contact Person Donald L Safnt Phone Number [phone] _
For projects with multiple basins, specify which basin this worksheet applies to Water Quality Pond #2
elevations
Basin Bottom Elevation 1600 ft (door of the basin)
Permanent Pool Elevation 2000 ft (elevation of the orifice)
Temporary Pool Elevation 2200 ft (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 15,991 sq ft
Drainage Area 618 ac
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
other parameters
SA/DA J
Diameter of Onfice
Design Rainfall
Design TSS Removal2
309 ac
(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)
43,315 cu ft (combined volume of main basin and forebay)
35,713 cu. ft (volume detained above the permanent pool)
20,221 cu. ft (approximately 20% of total volume)
558 (surface area to drainage area ratio from DWQ table)
15 in (2 to S day temporary pool draw -down required)
1 in
90 % (minimum 85% required))
FORM SWU-102 Rev 3 99 PAGE 1 OF 4

Footnotes
I 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 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
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
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 6 1 or less (show detail)
1 Vegetative cover above the permanent pool elevation is specified
J A trash rack or similar device is provided for both the overflow and orifice
k A recorded drainage easement is provided for each basin including access to nearest
right-of-way
1 If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin
m A mechanism is specified which will drain the basin for maintenance or an 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)
This system (check one)
❑ does ® does not incorporate a vegetated filter at the outlet.
❑ does ® does not incorporate pretreatment other than a forebay.
FORM SWU-102 Rev 3 99 PAGE 2 OF 4

Maintenance activities shall be performed as follows
1 After every significant runoff producing rainfall event and at least monthly
a Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
b Check and clear the onfice 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 a 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 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 3 00
When the permanent pool depth reads 3 00
feet in the main pond, the sediment shall be removed
feet to the forebay, the sediment shall be removed
BASIN DIAGRAM
ill in the blanks)
© Permanent Pool Elevation 20 00
Sediment emoval El 17 00 75ON
---------------- ---- Sediment Removal Elevation 17 00 75%
Bottom evation 16 00 2 /o---------------------------------------------
Bottom Elevation 16 00 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 dram 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 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 Donald L Safnt
Title V P for Horizontal Development
Address 10155 Beach Drive, Calabash, North Carolina 28467
Phone [phone]
Signature
Date (?-I (+ / 2o00
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, DD Ra+Y,44, �B,_ rod , a Notary Public for the State of North Carolina
County of j Xu",..P;c.k , do hereby certify that r,4L1a L • csa fe;+
personally appeared before me this _ j y� day of ��,�• , 2000 and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
My commission expires
OFFICIAL SEAL
Nerpry Public North Cudw
BRUNSWICK COUNTY
DOROTHEA B FOX l
My Commission Expires -0
SEAL
D&- 0)-acoy
FORM SWU-102 Rev 3 99 PAGE 4 OF 4

Permit No . /% O1 l(O
(to be provided by DWO)
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 photocopies for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details
I. PROJECT INFORMATION (please complete the following information)
Project Name Strand River Development
Contact Person Donald L Safnt Phone Number 919 579-0733
For projects with multiple basins, specify which basin this worksheet applies to Water Quality Pond #3
elevations
Basin Bottom Elevation 300
Permanent Pool Elevation 800
Temporary Pool Elevation 900
ft (floor of the basin)
ft (elevation of the orifice)
ft (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 32,414 sq ft
Drainage Area 1789 ac
Impervious Area
859 ac
(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 95,935 cu ft (combined volume of main basin and forebay)
Temporary Pool Volume 32,707 cu ft (volume detained above the permanent pool)
Forebay Volume 21,975 cu ft (approximately 20% of total volume)
other parameters
SA/DA' 4 12 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 3 in (2 to 5 day temporary pool draw -down required)
Design Rainfall 1 in
Design TSS Removal2 90 % (minimum 85% required))
FORM SWU-102 Rev 3 99 PAGE 1 OF 4

Footnotes
1 When using the Division SAIDA 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 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
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
in
e
f
g
h
J
k
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
The temporary pool draws down in 2 to 5 days
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
The basin side slopes above the permanent pool are no steeper than 3 1
A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
Vegetative cover above the permanent pool elevation is specified
A trash rack or similar device is provided for both the overflow and orifice
A recorded drainage easement is provided for each basin including access to nearest
right-of-way
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)
This system (check one)
❑ does ® does not incorporate a vegetated filter at the outlet.
❑ does ® does not incorporate pretreatment other than a forebay.
FORM SWU-lot Rev 399 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 a 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 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 3 75
When the permanent pool depth reads 3 75
feet in the main pond, the sediment shall be removed
feet in the forebay, the sediment shall be removed
BASIN DIAGRAM
ill in the blanks)
V Permanent Pool Elevation 8 00
Sediment tmoval El 4 25 75%
--------- --I
--- Sediment Removal Elevation 4 25 75%
Bottom evation 3 00 25°------------------------------ ----- -------
Bottom Elevation 3 00 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 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 Donald L Safnt
Title V P for Horizontal Deve
Address 10155 Beach Drive, Calabash, North Carolina 28467
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, _T),ngo+ yL Fax , a Notary Public for the State of North Carolina
Countyof ,.�,,,s,; �.i� , do hereby certify that T�o.►�1ca L. , c�a fir: �'
personally appeared before me this day of D4e.,C,}p6,, , 2000 and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
OFFICIAL SEAL
Naiory public Noah Cambno
BRUNSMCK COUNTY
DOROTHEA B FOX
My Commission Expiros 610
SEAL
My commission expires Q 6 - 0 )- 6?0D y
FORM SWU-102 Rev 3 99 PAGE 4 OF 4

PermitNo S( LT C(X)4'1 (D
(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 photocopies for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details
I. PROJECT INFORMATION (please complete the following information)
Project Name Strand River Development
Contact Person Donald L Safrit Phone Number 919 579-0733
For projects with multiple basins, specify which basin this worksheet applies to Water Quality Pond #4
elevations
Basin Bottom Elevation
400
ft
Permanent Pool Elevation
900
ft
Temporary Pool Elevation
980
ft
areas
Permanent Pool Surface Area
15,707
sy ft
Drainage Area
690
ac
Impervious Area
345
ac
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
other parameters
SAIDA '
Diameter of Orifice
(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 -sate and off -sate drainage to the basin)
38,722 cu ft (combined volume of main basin and forebay)
13,113 cu ft (volume detained above the permanent pool)
8,851 cu ft (approximately 20% of total volume)
483
2
(surface area to drainage area ratio from DWQ table)
in (2 to 5 day temporary pool draw -down required)
Design Rainfall 1 in
Design TSS Removal2 90 % (minimum 85% required))
FORM SWU-102 Rev 3 99 PAGE 1 OF 4

Footnotes
I When using the Division SAIDA 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 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
icants Initials
..
A
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 required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f The basin length to width ratio is greater than 3 1
g The basin side slopes above the permanent pool are no steeper than 3 1
h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
Vegetative cover above the permanent pool elevation is specified
A trash rack or similar device is provided for both the overflow and orifice
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
in 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)
This system (check one)
❑ does N does not incorporate a vegetated filter at the outlet.
❑ does N does not incorporate pretreatment other than a forebay.
FORM SWU-102 Rev 3 99 PAGE 2 OF 4

Maintenance activities shall be performed as follows
1 After every significant runoff producing rainfall event and at least monthly
a Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
b Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed
2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
3 Inspect and repair the collection system (i 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 3 75
When the permanent pool depth reads 3 75
feet in the main pond, the sediment shall be removed
feet in the forebay, the sediment shall be removed
BASIN DIAGRAM
(}ill in the blanks)
0 Permanent Pool Elevation 9 00
Sediment\eemoval El525 75%------- --- ---- Sediment Removal Elevation 5 25 75%
Bottomvation 4 00 25°------------------------------ ----- -------
Bottom Bottom Elevation 4 00 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 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 Donald L Safrit
Title V P for Horizontal Development
Address 10155 Beach Drive, Calabash, North Carolina 28467
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
11 T)ORa} off. , a Notary Public for the State of North Carolina
County of t c.14 , do hereby certify that norta 14 ,, , &,_ '-r_'•_�-_ _
personally appeared before me this y day of , 2000 and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
.Aooli02
SEAL
OFFICIAL SEAL
•, Nolary Pubk North C.rolhr
y k 13RUNSWICK COUNTY
DOROTHP,& B FOX
My Commrssron ExplresQ�Q��GD�f
My commission expires 06 - Q) - a DO LI
FORM SWU-102 Rev 3 99 PAGE 4 OF 4