SW8031214_CURRENT PERMIT_20040330

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
sw.,�QJ/ �/
DOC TYPE
CURRENT PERMIT
ff
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

of WArFR Michael F Easley, Governor
p William G Ross Jr Secretary
North Carolina Department of Environment and Natural itesources
cow'�
Alan W Klimek, P E ,Director
p Division of Water Quality
Coleen H Sullins, De uty Director
Division of Water Quality
March 30, 2004
Mr Bradley Parker, Manager
NRP Vineyard Pointe, LLC
4030 Wake Forest Road, Suite 300
Raleigh, NC 27609
Subject- Stormwater Permit No. SW8 031214
Vineyard Pointe
High Density Project
New Hanover County
Dear Mr Parker
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Vineyard Pointe on February 23, 2004 Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the
Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding
Permit No SW8 031214 dated March 30, 2004, for the construction of the subject
project
This permit shall be effective from the date of issuance until March 30, 2014, and shall
be subject to the conditions and limitations as specified therein Please pay special
attention to the Operation and Maintenance requirements in this permit Failure to
establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-
7447 Unless such demands are made this permit shall be final and binding
If you have any questions, or need additional information concerning this matter, please
contact Linda Lewis, or me at [phone]
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl S 1WQSISTORMWATIPERMIT1031214 mar04
cc David Hollis, P,E„ Hanover Design Services
Tony Roberts, New Hanover County Building Inspections
Beth E Wetherill, New Hanover County Engineering
City of Wilmington Development Services-Stormwater
Linda Lewis
Wilmington Regional Office
Central Files
N C Division of Water Quality 127 Cardinal Drive Extension [phone] Customer Service
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax [phone]

State Stormwater Management Systems
Permit No SW8 031214
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
Bradley Parker, NRP Vineyard Pointe, LLC
Vineyard Pointe
New Hanover County
FOR THE
construction, operation and maintenance of two wet detention ponds in compliance with
the provisions of 15A NCAC 2H 1000 (hereafter referred to as the "stormwater rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit
This permit shall be effective from the date of issuance until March 30, 2014, and shall
be subject to the following specified conditions and limitations
I. DESIGN STANDARDS
1 This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data
2 This stormwater system has been approved for the management of stormwater
runoff as described on page 3 of this permit, the Project Data Sheet The
stormwater controls has been designed to handle the runoff from 69,496 and
52,272 square feet of impervious area, respectively, for Ponds 1 and 2
3 The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans The built -upon area for the future
development is limited to 4,650 and 6,412 square feet, respectively for Ponds 1
and 2
4 The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system A permit
modification must be submitted and approved prior to the construction of
additional built -upon area from outside of the approved drainage area
Page 2 of 8

State Stormwater Management Systems
Permit No SW8 031214
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name
Vineyard Pointe
Permit Number
SW8 031214
Location
4818 Franklin Avenue
Wilmington, NC 28403
New Hanover County
Applicant
Bradley Parker, Manager
Mailing Address
NRP Vineyard Pointe, LLC
4030 Wake Forest Road, Suite 300
Raleigh, NC 27609
Application Date February 23, 2004
Receiving Stream/River Basin Burnt Mill Creek 1 Cape Fear
Stream Index Number CPF17 18-74-63-2
Classification of Water Body "C Sw"
i
Pond Number
Drainage Area, 9cres
Onsite, ft
Offsite, ft2
Total Impervious Surfaces, ft2
Pond Depth, feet
QTSS removal efficiency
Permanent Pool Elevation, FMSL
OPermitted Surface Area, ft2
Permitted Storage Volume, ft3
Temporary Storage Elevation, FMSL
®Controlling Orifice
Permitted Forebay Volume, ft3
1
2
350
250
350
250
0
0
69,496
52,272
70
60
90%
90%
420
420
3,710
4,270
6,696
7,549
432
432
1 0"0 pipe
1 0" 0 pipe
1,610
1,665
fQ No vegetated filter is required
O The permitted surface area must be provided at the permanent pool elevation
03 The orifice must draw down the 1" storage volume to the permanent pool elevation
in 2-5 days
Page 3 of 8

State Stormwater Management Systems
Permit No SW8 031 �14
II. SCHEDULE OF COMPLIANCE
The stormwater management systems shall be constructed in their entirety,
vegetated and operational for their intended use prior to the construction of any
built -upon surface
2 During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately
3 The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and revegetation of slopes and the vegetated filter
d Immediate repair of eroded areas
e Maintenance of all slopes in accordance with approved plans and
specifications
f Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping
g Access to the outlet structure must be available at all times
4 Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ The records will indicate the date,
activity, name of person performing the work and what actions were taken
5 Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria
a The fountain must draw its water from less than 2' below the permanent
pool surface
b Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond
c The falling water from the fountain must be centered in the pond, away
from the shoreline
d The maximum horsepower for the fountain's pump is based on the
permanent pool volume The maximum pump power for a fountain in this
pond is 118 HP
6 The facilities shall be constructed as shown on the approved plans This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation Any deviations from the
approved plans and specifications must be noted on the Certification A
modification may be required for those deviations
8 If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility
Page 4 of 8

State Stormwater Management Systems
Permit No SW8 031214
9 At least 30 days prior to the sale or lease of any portion of the property, the
permittee shall notify DWQ and provide the name, mailing address and phone
number of the purchaser or ieasee An access/maintenance easement to the
stormwater facilities shall be granted in favor of the permittee if access to the
stormwater facilities will be restricted by the sale or lease of any portion of the
property
10 The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below
a Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area or to the
drainage area
e Further subdivision, acquisition, or sale of all or part of the project area
The project area is defined as all property owned by the permittee, for
whichh Sedimentation and Erosion Control Plan approval or a CAMA Major
ppermit was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan
11 The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction If the proposed
SUA exceeds the amount permitted under this permit, a modification to the
permit must be submitted and approved pnor to construction
12 A copy of the approved plans and specifications shall be maintained on file by
the PermEttee for a minimum of ten years from the date of the completion of
construction
13 The permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all the built -upon is directed into the permitted
system
14 The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made
15 The permittee must maintain the current permitted drainage area No additional
runoff from outside of the permitted drainage area boundary may enter the
permitted stormwater facilities without first applying for and receiving a permit
modification
Page 5 of 8

State Stormwater Management Systgms
Permit No SW8 031214
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate
The approval of this request will be considered on its merits and may or may not
be approved The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request
2 Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction
4 In the event that the facilities fad to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems
5 The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility
6 The permit may be modified, revoked and reissued or terminated for cause The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition
7 Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual
8 Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit
9 The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days
Permit issued this the 30th day of March, 2004
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan ime�"ector
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 8

State Stormwater Management Systems
Permit No SW8 031214
Vineyard Pointe
Stormwater Permit No SW8 031214
New Hanover County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the protect
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No SW8 031214
i
l
Certification Requirements
1
The drainage area to the system contains approximately the permitted
I
acreage
2
The drainage area to the system contains no more than the permitted
amount of built -upon area
3
All the built -upon area associated with the project is graded such that the
runoff drains to the system
4
All roof drains are located such that the runoff is directed into the system
5
The outlet/bypass structure elevations are per the approved plan
6
The outlet structure is located per the approved plans
7
Trash rack is provided on the outlet/bypass structure
8
All slopes are grassed with permanent vegetation
9
Vegetated slopes are no steeper than 3 1
10
The inlets are located per the approved plans and do not cause short-
circuiting of the system
11
The permitted amounts of surface area and/or volume have been
provided
12
Required drawdown devices are correctly sized per the approved plans
13 All required design depths are provided
14 All required parts of the system are provided, such as a vegetated shelf,
and a forebay
15 The required system dimensions are provided per the approved plans
cc NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspections
Page 8 of 8
z

lRiSfial
Date Received Fee Paid Fernut Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
Thus form may be photocopied for use as an original
GENERAL INFORMATION
1 Applicants name (s ecify the name of the corporation, individual, etc who owns the project)
� R P cLc _Pot
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Qi .(.'� T>Q.0 ".v ,
3 Mailing Address for person listed in item 2 above
City State T-X_ Zip '2760g
Telephone Number �L �J -7 ( °— 'Z-70C.
4 Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc )
C� L CL.LrCC., l"�Ci l i�t{r�
5 Location of Project (street address)
4 6:5( e--(ti,_ 4CX.—,
City (AA(C)l ( County
b Directions to project (from nearest major intersection)
� Acre
7 Latitude �t4 ` Longitude —7—7c'of project
8 Contact person who can answer questions about the project
Name t2l) VV_C#_ "PCW Telephone Number (g 49 D 0(o
II PERMIT INFORMATION:
1 Specify whether project is (check one) kZNew Renewal Modification
y Form SWU-101 Version 3 99 Page I of 4

P�
t2 If this application is being submitted as the result of a renewal or modification to an existing pernut, list the
existing permit number and its issue date (if known)
3 Specify the type of project (check one)
.� Low Density V High Density Redevelop General Penrut Other
4 Additional Project Requirements (check applicable blanks)
CAMA Major ✓ Sedimentation/Erosion Control ✓ 4/401 Permit �NPDES Stormwater
r
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
2 Stormwater runoff from this project drains to the River basin
3 Total Project Area GQ,rZ:Z acres 4 Project Built Upon Area 4E5 %
5 How many drainage areas does the project have? 2-
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
On -site Buildings '22�R�4`T SIP l S C
On -site Streets ti 7 jrj cv-P
On -site Parking j 9 489 -�-, P 2 ( 0-7 g ��
On -site Sidew ( i?_aS SP la58g �(=
Other on -site 442,,50 -' 6,4-
Off -site I,-3A
Total GC Sp Total 5 2 Z")2 SF
" Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc _ i , & 0-c-, = ( , 2. 0_A=..t
Form SWU-101 Version 3 99
Page 2 of 4

v
7 How was the off -site impervious area listed above derived? 04)
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot if lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment
1 Thefollowing covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality These covenants may
not be changed or deleted without the consent of the State
2 No more than 121 g &a square feet of any Iot shall be covered by structures or impervious materials
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools
3 Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runofi'from outparcels or future development shall be directed into the permitted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will run with the land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot
V SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project Contact the Stormwater and General Permits Unit at [phone] for the
status and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Bann Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of 4

,�VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office
1 Please indicate that you have provided the following required information by initialing in the space
provided next to each item
Irutials
• Original and one copy of the Storrnwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP TJ7 w
• Permit application processing fee of $420 (payable to NCDENR) MW
• Detailed narrative description of stormwater treatment/management LB 1A
• Two copies of plans and specifications, including z8 w
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section
-Dcrs.�7� 3-. 4c:)w-S ,->e", [=>C_S
Designated agent (individual or firm) L
Mailing Address _73 (
City .. t `A (rn t,yLnjg: ti: State 0(— Zip ZZA0
Phone ( ©J (n ,) '5.� --g "L' Fax ( S (0 ) '34 3 -- .95 Qr t —
VIII APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) � �-�/�c12i✓
certify that the information included on this peruut application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protecbvd covenants will be recorded, and that the proposed project complies with the requirements of 15A
Date
Form SWU-101 Version 3 99 Page 4 of 4

P
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N
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00
L.0
L4_
Permit No. _5wb v3 12k 4
State of North Carolina
Department of Environment and Natural Resources
oDivision of Water Quality
r
WET DETENTION BASIN SUPPLEMENT
Thus farm may be photocopied for use as an ortg of
(to be provided by DWQ)
DM ,Stormwater N mA&§M= 90 &view
A complete stormwater management plan submittal includes an application fom a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION PCs,.@, d
Project Name
K&C—
Contact Person. 1z:5� 1CxLLe Phone Number 15-- _-7 0&
For projects with multiple basins, specify which basin this wo&sheet applies to: FO-Kd �-Jcs
eIevatioris
Basin Bottom Elevation '25�a•(Q ft. (floor of the basin)
Permanent Pool Elevation 4e - ® ft, (elevation of the onfice)
'Temporary Pool Elevation dam. ft (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area t� sq ft. (water surface area at the orifice elevation)
Drainage Area - ac. (on -site and off site drainage to the basin)
Impervious Area ac (on -site and off --site drainage to the basin)
volumes e5a3o _Z C tCv :
Permanent Pool Volume cu. ft. (combined volume of main basin ail forebay)
Temporary pool Volume C*Cv5)0 cu. ft (volume detained above the permanent pool)
Forebay Volume Cu. ft (approximately 20% of total volume)
l ?R-thS e� 2 . tf3 -04� i7&�ttt s
Otherparameters
SAIDA1 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice in (2 to 5 day temporary pool draw -down required)
Design Rainfall _ R in
Design TSS Removal 2 % (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 24
-7 t IDS C4 a TheApermanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
L-A b The forebay volume is approximately equal to 20% of the basin volume
IZE LA c The temporary pool controls runoff from the design storm event
L;t3 CA d The temporary pool draws down in 2 to 5 days
.� QA e If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
M
calculations)
f The basin length to width ratio is greater than 3 1 -�S� ��e�KaC'�i#, bLt /a-�e SA i s(XW
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 sirrular device is provided for both the overflow and onfice
k A recorded drainage easement is provided for each basin including access to nearest nght-
of -way
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
i in A mechanism is specified which will drain the basin for maintenance or an emergency
11
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided
This system (check one) 0 does 7does
oes not
This system (check one) 0 does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3 99 Page 2 of

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, nprap, etc ) quarterly to
maintain proper functioning
4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i a stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads feet in the main pond, the sediment shall be removed
When the permanent pool depth reads feet in the forebay, the sediment shall be removed
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevauon 42• O
Sediment R\Ele
val El 75
--------- ` - -- Sediment Removal Elevation 75%
BottomAnon �� 0 qb------------------------------------------- --
Bottom Elevation 3�J. O 125%
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
`JI 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 Bi2tcU--L�—*a..l L'-k� air K)RE.
Title RTrAl.-ar.,og
OR!t-I&M
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
C- , a Notary Pub for the State of �� ' T c r o /11
County of -� , do hereby certify that o- d k
personally appeared before me this S t day of D e C-e "-. 40 ✓, and acknowledge the due
,--execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
**t
!y AUB4�G
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SEAL
My Commission Expires 0-25•2097
My commission expires
Form SWU-102 Rev 3 99 Page 4 of 4

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Permit
State of North Carolina
Department of Environment and Natural Resom
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATI,
0
WET DETENTION BASIN SUPPLEM
+� This forme mmy be photocopied for use as an anginal
(q-
(to be provided by DWQ)
FORM
DWQ StgMwatetManag&=nt P1anRevsew.
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION
Project Name `4 C lrj s, ["b c c. _-_
Contact Person: 7[b_V*_ .T-:hJLgy Phone Number. QL43 Z70CP
For projects with multiple basins, specify which basin this worksheet applies to: *PCYX09 'Z
elevations
Basin Bottom Elevation :5Coa 0 ft
Permanent Pool Elevation 42, Cn ft.
'Temporary Pool Elevation ft
areas
Permanent Pool Surface Area 4'Z.-7o sq. ft.
Drainage Area ?—,5 ac.
Impervious Area 6.0— ac
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAI
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
Porm SWU-102 Rev 3 99
(floor of the basin)
(elevation of the onfrce)
(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)
E33770 P�cAs2dL 2 • L 3.4¢ 04� a
cu. ft. (combined volume of main basin and forebay)
cu ft. (volume detained above the permanent pool)
cu. ft (approximately 20% of total volume)
(surface area to drainage area ratio from DWQ table)
in (2 to S day temporary pool draw -down required)
4 in
�® % (minimum 85% required)
Page 1 of 4

Fbodn—M
t When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual imperious % and permanent pool depth Linear interpolation should be employed to deternune the correct value for non-
standard table entrees
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 ermanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
�-I b The forebay volume is approximately equal to 20% of the basin volume
14 c The temporary pool controls runoff from the design storm event
TZG" d The temporary pool draws down in 2 to 5 days
IDS" e If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations) --11
�-� f The basin length to width ratio is greater than 3.1 -�� y C�Fnol buf lay SA +5 pmv-'
g The basin side slopes above the permanent pool are no steeper than 3 1
h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
i Vegetative cover above the permanent pool elevation is specified
A trash rack or similar device is provided for both the overflow and onfice
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
F
LA 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) 0 does `O'd es not
This system (check one) 0 does Wdoes not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Form SWU-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, nprap, etc ) quarterly to
maintain proper functioning
4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i a stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads~ _ feet in the main pond, the sediment shall be removed
�. When the permanent pool depth reads feet in the forebay, the sediment shall be removed
Sediment
Bottom
El
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 4'2' .O
Sediment Removal Elevationy'�
---------------------------------
Bottom Elevation 52:)<o
MAIN POND
75%
25%
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

a .
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
Printname
Title
!L ��
Phon
4 Signf
Date
CI r
Note' The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president.
a Notary Publi' for the State of 'V n y r Cc ro �r
County of Way �� , do hereby certify
at � r� r� �� personally appeared a eared before me this � day of �✓" r' and acknowledge the due
p Y PP �_ Y , -� g
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
/ �NPM S�
TA q �9
a w w
AU$ LAG
V
couls
SEAL
, My commission egftsImission ExPM 1-11-1111
Form SWU-102 Rev 3 99 Page 4 of 4

R
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State Stormwater Management Systems
Permit No SW8 031214
Vineyard Pointe
Stormwater Permit No SW8 031214
New Hanover County
Designer's Certification
as a duly registered 1 , ��--4z-p _
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full tirne) the construction of the project,
V t +1
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification
•.• ��N CARp� ''�..
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4 .JLA.K a -. �CkLWA- t'�' �'°�o�Essiq I
SEAL
cavtj- Pvc nU-9% -f= 20007
Signature
Registration Number 2(5�5C)I
Date �7' eo f t I
't, �� SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No SW8 031214
Certification Requirements m
�1 The drainage area to the system contains approximately the permitted
acreage
✓ 2 The drainage area to the system contains no more than the permitted
amount of built -upon area a
✓ 3 All the built -upon area associated with the project is graded such that the
runoff drains to the system
s�4 All roof drains are located such that the runoff is directed into the system
5 The outlet/bypass structure elevations are per the approved plan
✓6 The outlet structure is located per the approved plans
✓7 Trash rack is provided on the outlet/by I ass structure '
8 All slopes are grassed with permanent vegetation
9 Vegetated slopes are no steeper than 3 1
�10 The inlets are located per the approved plans and do not cause short-
circuiting of the system
�11 The permitted amounts of surface area and/or volume have been
provided
12 Required drawdown devices are correctly sized per the approved plans
_V-" 13 All required design depths are provided
✓14 All required parts of the system are provided, such as a vegetated shelf,
and a forebay
�15 The required system dimensions are provided per the approved plans
cc NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Budding Inspections
vvciir._( 7 ?_1J • t 4
7 r
Page 8 of 8