SW8971218_CURRENT PERMIT_20040122

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SWCWMMIWO�
DOC TYPE
CURRENT PERMIT
r� APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2Z4 Ol�a�
YYYYMMDD

of WATFy Michael F. Easley, Governor
� Q William G. Ross Jr., Secretary
�,O G North Carolina Department of Environment and Natural Resources
co 7
Alan W. Klimek, P.E.,Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
January 22, 2004
Mr. Curtis Palmer, Manager
Myrtle Grove Business Park Property Owner's Association
C/o Partitions, Inc.
5654 Carolina Beach Road
Wilmington, NC 28412
Subject: Permit No. SW8 971218
Myrtle Grove Business Park
High Density Subdivision Stormwater Project
New Hanover County
Dear Mr. Palmer:
The Wilmington Regional Office received final information to transfer the Stormwater
Management Permit for Myrtle Grove Business Park on December 19, 2003. 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 971218, dated January 22, 2004, for the construction of the
project, Myrtle Grove Business Park.
This permit shall be effective from the date of issuance until January 22, 2014, and shall
be subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for operation:Pnd 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
Regional Water Quality Supervisor
RSSlarl: S:1WQSISTORMWATIPERMIT1971218.jan04
cc: Tony Roberts, New Hanover County Inspections
Beth Wetherill, New Hanover County Engineering
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] NCDE=NNR

s '
State Stormwater Management Systems
Permit No. SW8 971218
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
Curtis Palmer, Myrtle Grove Business Park Property Owner's Association
Myrtle Grave Business Park
New Hanover County.._
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter `referred to as the "stormwater rules') and the
approved stormwater management plans and .3specifications and other supporting data as
attached and on file with and approved by thetivision of Water Quality and considered a part of
this permit.
This permit shall be effective from the date of issuance until January 22, 2014, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect 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 subdivision is permitted for
4 lots, each allowed a maximum built=upon area (in square feet) as follows: Lot 1- 14,500;
Lot 2- 36,000; Lot 3- 49,000; Lot 4- 33,000. -
3. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
2of8

State Stormwater Management Systems
Permit No. SW8 971218
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name:
Myrtle Grove Business Park
Permit Number:
SW8 971218
Location:
Carolina Beach Road, New,Hanover County
Applicant:
Myrtle Grove Business Park
Property Owner's Association
Mailing Address:
Mr. Curtis Palmer, Manager
C/o Partitions, lnc.
5654 Carolina Beach Road
Wilmington, NC 28412
Application Date:
December 5, 1997
Transferred January 22, 2004
Receiving Stream:
UT Cape Fear River
Classification of Water Body:
"C Sw"
Drainage Area:
4.13 acres
Onsite:
4.13
Offsite:
0
Total Impervious Surfaces, ft2:
141,620
Lot 1:
14;500
Lot 2:
36:00
Lot 3:
Lot 4:
4W'u00 c
33,000
Roads/Parking, ft2:
9,120
Pond Depth, feet:
6.0
Permanent Pool Elevation, FMSL:
29
Provided Surface Area, ft2:
9,200 @elevation 29
Provided Storage Volume, ft3:
17,460 (between 29 and 30.5)
Temporary Storage Elevation, FMSL:
30.5
Controlling Orifice:
2" y pipe _
Permanent Pool Volume, ft3:
63,750
Maximum fountain pump power:
'/4 horsepower
3of8

State Stormwater Management Systems
Permit No. SW8 971218
4. No lot owner/developer/lessee 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.
5. The permittee is responsible for verifying that the proposed built -upon area 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..
6. 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 of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
7. In addition, the Director may determine that other revisions to the project should require a
modification to the permit.
8. 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.
11. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety, vegetated and
operational for its intended use prior to t11e construction of any built -upon surface except
roads.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee grants permission to DENR Staff to enter the property for the purposes of
inspecting the project for compliance with the conditions of this permit.
4. 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.
5. Decorative spray fountains will be allowed in the stormwater treatment system, subject to
the following criteria:
a. The fountain draws its water from less than 2' below the permanent pool surface.
b. Separated units, where the nozzle, pump and intake are connected by tubing, may be
used only if they draw water from the surface in the deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away from the
shoreline.
d. The maximum allowable pump power for a fountain in this pond is'/ horsepower,
based on 63,750 cubic feet of permanent pool volume.
4of8

State Stormwater Management Systems
Permit No. SW8 971218
6. 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. 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.
8. 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 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 outlet structure, orifice device and catch basins and
piping.
g. Access to the outlet structure must be available at all times.
9. 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.
10. Prior 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 lof (in square feet) is: Lot 1- 14,500; Lot 2- 36,000;
Lot 3- 49,000; Lot 4- 33,000, inclusive of that portion of the right-of-way between the lot
line and the edge of pavement, structures, pavement, walkways of brick, stone, or slate,
but not including open wood decking.
b. The covenants pertaining to stormwater regulations may not be changed or deleted
without concurrence of the State.
c. Alteration of the drainage as shown on the approved plan may not take place without
the concurrence of the State.
d. All runoff from the impervious areas on the lot must drain into the permitted stormwater
system. This may be accomplished through providing roof drain gutters which drain to
the street, grading the lot to drain toward the street, or grading perimeter swales and
directing them into the pond or street. Lots that naturally drain into the system are not
required to provide these measures.
11. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of
the date of recording the plat. The recorded copy must be signed by the Permittee, dated,
stamped with the deed book number and page, and bear the stamp/signature of the
Register of Deeds.
5of8

State Stormwater Management Systems
Permit No. SW8 971218
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director. 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 curb outlet and 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. The permittee is responsible for
compliance with all conditions of this permit until such time as the transfer is 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.
5. 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. Permittee grants permission to staff of th`e DWQ to access the property for the purposes of
inspecting the stormwater facilities durin normal business hours.
• C
7. The permittee shall notify the Division of any name, mailing address or ownership changes
within 30 days.
Permit issued this the 22nd day of January, 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Hian vv. NiimeK, r.t.uirecior
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 971218
6 of 8

State Stormwater Management Systems
. Permit No. SW8 971218
Myrtle Grove Business Park
Stormwater Permit No. SW8 971218
New Hanover Counly
Designer's Certification
Page 1 of 2
as a duly registered
in the State of North Carolina, having been authorized to observe (period icallylweeklylfull time)
the construction of the project,
(Project)
for , (Project Owner) hereby state that, to the best of
my abilities, due care and diligence was used: in the observation of the project construction such
that the construction was observed to be built within substantial compliance and intent of the
approved plans and specifications.
Noted deviations from approved plans and specifications:
s SEAL
Signature t
Registration Number
Date
7of8

State Stormwater Management Systems
Permit No. SW8 971218
Page 2 of 2
Designer Certification Requirements:
_1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -
:upon area.
,
3. All the built -upon area associated with the project is graded such that the runoff drains
to the system.
4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the
system.
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
14. The dimensions of the system, per the approved plans, are provided.
cc: NCDENR-DWQ
Tony Roberts, New Hanover County Building Inspections
8 of 8

DIVISION OF WATER QUALITY
TE 97079
R NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
I. ` GENERAL INFORMATION
(Please print clearly or type
1. Project Name Myrtle Grove Business Park
2. Location, directions to project (include County, Address, State Road) Attach map. New Hanover County
approx. 2500' south from the intersection of US Hwy 421 and NC Hwy 132
3. Owner's Name Gulfstream Shopping Center Properties,. L.L.C. _ Phone [phone]
4. Owner's Mailing Address 5315 S.-College Road _
5. City Wilmington
State
NC
_ Zip 28412
6. Nearest Receiving Stream
unnamed tributary of Cape Fear River
Class
C-SW
7. Project Description four lot commercial subdivision
H. PERMIT INFORMATION
1. Permit No. (Po befilied in byDWQ)_
2. Application Date 12/03/97 Fee enclosed $ 385.00
3. Permit Type. X New Renewal Modification (existing Permit No.)
4. Project Type: Low Density X Detention Infiltration Redevelop General Alter Offsite
5. Other State/Federal Permits/Approvals Required (Check appropriate blanks)
6. CAMA Major Sedimentation/Erosion Control X 404 Permit
1I1. BUILT UPON AREA (Please see NCAC 211,1005 thru .1007 for applicable density limits)
Drainage Drainage Breakdown of Impervious Area
Basin Basin (Please indicate below the design impervious area)
Classification C-SW Buildings
Access
Existing Built -upon Area NIA Streets 9,120 sf_
Proposed Built -upon Area 141,620 sf Parking/SW
Building, parking, conc., etc. (4 lots)
Total Project Area 179,842 sf Other _ 132,500 sf
% Built -upon Area 78.8% Totals 141,620 sf
IV. STORMWATER TREATMENT (Describe how the runoffwill be treated)
Detention pond

V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective, covenants- are required to be recorded. for all. low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded for
the type of project- applied for.
By your signature below, you certify that the recorded -deed restrictions and -protective covenants -for this project
shall include all the items required by the permit, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the -lands that- the .covenant- cannot be changed or deleted. without
concurrence from the State, and that they will be recorded prior to the sale of any lot.
Vl. OWNER'S CERTIFICATION
1, _ Jon T. Vincent , certify that -the -information -included -on this permit
{Please prial clear!v or type}
application form is correct; that the project will be -constructed in conformance with the approved plans; that the
deed restrictions will be recorded with all required permit conditions, and that to the best of my knowledge, the
proposed project complies -with the requirements of 15A NCAC.2H.1000.
l authorize the below n med pe on or firm to submit stormwater plans on my behalf.
✓
Own / uthorized Agent-.Signature:and ie Date,
VI1. AGENT AUTHORIZATION
Person or firm name Tripp Engineerin.q C.
Mailing Address 507 Chestnut Street
City Wiltnin ton State-. NC. Zip 28401 Phone _(910) 763-5100
Pleasc submit application, fee, plans and calculations to the appropriate Regional Office.
cc: ApplicanUWiRO/Central, Files
■ �i LTitlitiT�
DEC 0 5 1997

� �
t A
� '�.

e5/07/1998 e8:26 9107635631 TRIPP ENGINEERING PAGE 02
ATTACHMENT A
1, Deed Restriction Language
`The following statement must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outparcels:
1. No more than -X square feet of any lot, including that portion of the right-of-way between the
edge of pavement and the front lot line, shall be covered by impervious structures including asphalt,
gravel, concrete, brick, stone, slate or similar material but not including wood decking or the
surface of swimming pools, This covenant is intended to insure continued compliance with the
stormwater permit issued by the State ofNorrh Carolina. The covenant may not be changed or
deleted without the consent of the State.
2. No one may fill in, pipe, or alter any roadside swale except as necessary to provide a minimum
driveway crossing_
NOTE: if lot sizes vary significantly, the owner/developer must provide an attachment listing eaeb lot
number, size and the allowable built upon area for each lot.
For connrrereial projects that have outparcels or future development, the following statements must also be
recorded:
.3. The connection from the outparcel or future area into the stormwater system must be made into the
forebay such that short-circuifing of the system does not occur.
4. All built -upon area from the outparcel or future development must be directed into the permitted
stormwater control system.
3. Built -upon area in excess of the permitted amount will require a permit modification prior to
construction.
For curb outlet sym ms, the Wowing statement in addition to items 1 and 2 above must berecorded:
6. No one may pipe, fill in or alter any designated 100 foot long grassed Swale used to meet the
requirements ofNCAC 2H.I008(g).
2. Supplement Forms
The applicable supplement form(s) listed below must be submitted for each BMP specified for this prgject:
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 SW LJ-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Nutrient Management Strategy Supplement
3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate
Regional Office)
Type of Permit
Low Density
High Density
Other
Director's Certification
General Permit
New, Modification, or
Late Renewal
$225
$385
$225
$350
$ 50
Form SWU-101 January 1998 page 4 of 4
Timely Renewal Without
Modification
n/a
$225
n/a
n/a
n/a

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quailty
Pri-8-1 kill
RECEi EDSEP 2 ^1 2003
66
DENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
WATER QUALITY SECTION
COASTAL STORMWATER PERMIT NAME/OWNERSHIP CHANGE FORM
1. CURRENT PERMIT INFORMATION:
Storniwater Management Permit Number: SW8 971218
1. Permit holder's name: Gulfstream Shoppinq Center Property,LLC
2. Permit's signing official's name and title: Jon T. Vincent
(Person legally responsible for permit)
Manager Member
(Title)
;. Mailing address: 1508 Military Cutoff Rd. Ste 302 City: Wilmin ton
State: NC Zip Code: 28403 Phone: [phone] FAX: [phone]
(Area Code and Number) (Area Code and Nwnher)
11. NEW OWNERINAME INFORMATION:
I . This request is for:
2
3.
X a.
b.
C.
Change in ownership of property/company
Name change of project or company.
Other (please explain):
New owner's name (name to be put on permit): Myrtle Grove Business Park Property Owners Association
New owner's signing official's name and title:
el
Curtis E. Palmer
(Person legally responsible for permit)
Manager
(Title)
4. Mailingaddress: 5654 Carolina Beach Road City: Wilmington
State: NC Zip Code: 28412 Phone: [phone]
(Area Code and Number)
FAX: [phone]
(Area Code and Number)

PERMIT NAME / OWNERSHIP CHANGE FORM
THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF WATER QUALITY
UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITI-I THE SUBMITTAL.
REQUIRED ITEMS:
This completed application
2. Legal documentation of the transfer of ownership
A copy of the recorded deed restrictions, if required by the permit.
4. The engineer's certification, if required by the permit.
A signed Operation and Maintenance plan, if a systern that requires maintenance will change ownership.
CERTIFICATION MUST BE COMPLETED AND SIGNED BY BOTH'I'HE CURRENT PERMIT HOLDER
AND THE NEW APPLICANT IN THE CASE OF CHANGE OF OWNERSHIP.
FOR NAME CHANGES; COMPLETE AND SIGN THE CURRENT PERMITTEE'S CERTIFICATION.
Current Permittee's
Jon T. Vincent
accurate and complete to
completed and hat if all r
be returned as i oniDlete.
Signature:
fication:
" /aest that this application for name/ownership change has been reviewedand is
e bestof knowledge. I understand that if all required parts of this applrcatron are riot
aired suppng information and attachments are not included, this application package will
Applicant's 4rti4cation:
Date: V/za/o 7
Curtis E .\�Ja i me r , attest that this application For a name/ownership change has been reviewed and
is accurate and complete to the best of nny knowledge. I understand that i:' all required parts of this application- are not
completed and that if all required supporting information and attachments are not included, this application package will
be returned as inconlple Q `
Signature: Date: / v�7
THE COMPLETED APPLICATION PACKAGE, INCLUDING ALL SUPPORTING INFORMATION AND MATERIALS,
SHOULD BE SENT TO THE FOLLOWING ADDDRESS:
North Carolina Department of Environment and Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
A,r'I'N: Linda Lewis

Permit No. SUP7 121
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FOR
WET DETENTION BASIN SUPPLEMENT'
This form may be photocopied for use as an original
(to be provided by DWQ
M
nn
� 1
DWQStorrnwater 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.
1. PROJECT INFORMATION
Project Name: _ _/-14,rlle 6roya &-smes5 I Prk
Contact Person: Cuch5 L, PO/Ma- Phone Number: Mb 39518ZZ
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation Z3, 0, ft.
Permanent Pool Elevation ft.
Temporary Pool Elevation ft.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 9200 sq. ft. (water surface area at the orifice elevation)
Drainage Area 4-0 3 ac. (on -site and off -site drainage to the basin)
Impervious Area 3 Z5 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume 00 cu. ft. (volume detained above the permanent pool)
Forebay Volume cu. ft. (approximately 20% of total volume)
Other parameters
SA/DA1 4,510 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice �� 1, 8 in. (2 to 5 day temporary pool draw -down required)
Design Rainfall .1 M.
Design TSS Removal 2 % (minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4

Footnotes:
When using the Division SA/DA tables, the correct SAMA 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.
H. 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.
N e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
t✓ 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.
NIA 1. if the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET -DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does does not. incorporate a vegetated filter at the outlet;
This system (check one) 0 does oes not incorporate pretreatment other than a forebay.
Form SWU-IO2 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. Repaireroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 46 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2,2 5 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
Ufl in the blanks)
0 Permanent Pool Elevation
Sediment Re oval El. ZOO ro\-------------- - Sediment Removal Elevation Z4,5 75%
Bottom Ele anon Z(r,0 ------------------------------------------- -----
BottomElevation23d 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.
✓ Printname: 'Curtis E. -Palmer
✓ Title: Manager
✓ Address: 5654 Carolina Beach Rd. Wilmington NC 28412
✓ Phone: 910_�;395-1822
✓ Signature:
✓ Date: /d'/�'C-3
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, n ,6«k1, a Notary Public for the State of 64d liita_"
County of Y ./UW/ (--k , do hereby certify that
personally appeared before me this l3�A day of _Otf�­- , dlD.3 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SijnzM
r L 1 x
C
CG
``�%iill!!!I!I i11111111����
SEAL
My commission expires l-q-d
Form S WU-102 Rev 3.99 Page 4 of 4

7`E 97D—?�
State Stormwater Management Systems
Permit No. SW8 971218
Myrtle Grove Business Park
Stormwater Permit No. SW8 971218
New Hanover County
Engineer's Certification
I, `� n 1 I I I l� • i jr I �p , as a duly registered Professional Engineer in the State of
North Carolina, having been authonzed to observe (periodicallyAvoe6�I� the construction of the project,
e. G rove_ �Vs I Pa,,r �,
(Project)
fore �i �Y2G�nnaPpiY+c�PX _W(Project Owner) hereby state that, to the best of my abilities, due
care and diligence was used iii 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.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date 05 r OS �qq
TORn NATER
r[J)ECFIV¢
MAY 06 g9g