SW8020516_CURRENT PERMIT_20061005

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 010 51�o
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Div irr nmenl mid Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
October 5, 2006
Mr. Carsten Jensen
4536 Technology Drive
Wilmington, NC 28405
Subject: Stormwater Permit No. SW8 020516 Modification
Lots 54, 55, 56 & 57R Technology Drive
High Density Project
New Hanover County
Dear Mr. Jensen:
The Wilmington Regional Office received a complete, modified Stormwater Management
Permit Application for Lots 54, 55 56 & 57R Technology Drive on September 5, 2006. 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 020516 Modficiation dated October 5, 2006, for the construction of
the subject project.
This permit shall be effective from the date of issuance until October 5, 2016, 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 sixty (60) 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].
Sincer
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/arl: S:\WQS\STORMWATER\PERMIT\020516.oct06
cc: Phil Tripp, P.E., Tripp Engineering
Tony Roberts, New Hanover County Building Inspections
Beth E. Wetherill, New Hanover County Engineering
Linda Lewis
Wilmington Regional -Offices N°oii thC;molina
Central Files dXaturally
North Carolina Division of N'ater Quality 127 Cardinal Drive Hxler iun Wilmington, NC' 28405 Phone [phone] Customer Service
Wilmington Regional Office Internet: mvvvv nc%vgerquality.nr° Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50 % Recycled/ 09< Pcct Consumer Paper

State Stormwater Management Systems
Permit No. SW8 020516 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Carsten Jensen, Owner
Lots 54, 55, 56 & 57R Technology Drive
4540 Technology Drive, Wilmington, New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond and for the
construction of built -upon area to be treated by a permitted offsite wet detention pond,
in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until October 5, 2016, 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 in Section 1.6 and 1.7 on page 3 of this permit. The on�ite
stormwater control has been designed to handle the runoff from 22,452 ft of
impervious area from Lot 57R.
3. The tract will be limited to the amount of built -upon area indicated in Sections 1.6
and 1.7 on page 3 of this permit, and per approved plans. This permit makes no
allocation for future built -upon area.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 020516 Modification
A
10
The following design criteria have been provided in the onsite wet detention pond
for the treatment of runoff from Lot 57R and must be maintained at design
condition:
a. Drainage Area, acres:
Onsite, ft :
Offsite, ftZ:
b. Total Impervious Surfaces, ftZ:
C. Design Storm, inches:
d. Pond Depth, feet:.
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSI '
g. Permanent Pool Surface Area, ft
h. Permitted Storage Volume, ft :
i. Temporary Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permitted Forebay Volume, W:
I. Max. Fountain Horsepower:
I. Receiving Stream/River Basin:
M. Stream Index Number:
n. Classification of Water Body:
0.85
37,026
0
22,452
1
3.0
90%
41.0
3,878
5,931
42.3
0.5" 0 pipe
1,331
1/8
Smith Creek / CPF
18-74-63
"C Sw"
The following design criteria have been provided in the offsite wet detention pond
permitted under SW8 961004, for the treatment of runoff from Lots 54, 55 and
56, and must be maintained at design condition by Technology Court Owner's
Association, Inc.:
a. Drainage Area, 9.cres:
Onsite, ft :
Offsite, ftZ:
b. Total Impervious Surfaces, ftZ:
C. Design Storm, inches:
d. Pond Depth, feet:
e. TSS Removal efficiency:
f. Permanent Pool Elevation, MSL:
g. Permanent Pool Surface Area, ftZ:
h. Provided Storage Volume, ft':
i. Temporary Storage Elevation, FMSL
j. Controlling Orifice:
k. Permitted Forebay Volume:
I. Receiving Stream/River Basin:
M. Stream Index Number:
n. Classification of Receiving Stream:
NORTH
SOUTH
13.70
10.86
596,743
473,061
0
0
344,780
235,960.
1
1
3
3.25
90%
90%
31.0
31.0
41,797
25,997
44,396
27,908
32
32
3.9" 0 pipe
3" 0 pipe
n/a
n/a
Smith Creek/CPF
18-74-63
C Sw
North Pond- Lots 42-46, 48-53, and 58-62; South Pond- Lots 54-56 & 63.
The stormwater runoff from the built -upon area on Lots 54, 55 and 56 shall be
directed into the "South" pond of the system operated and maintained by the
Technology Court Owner's Association under the terms and conditions set forth
in Permit No. SW8 961004.
The maximum built -upon area allotted to Lots 54, 55 and 56 of Technology Drive
by Stormwater Management Permit #SW8 961004 is 55,500 square feet. This
project proposes 51,852 square feet.
Lot 57R is limited to the amount of built -upon area as indicated in Section 1.6 of
this permit.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 020516 Modification
II. SCHEDULE OF COMPLIANCE
2
0
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
The permittee shall at all times provide the operation and maintenance
necessary to assure that 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.
q. Access to the outlet structure must be available at all times.
The Technology Court Owner's Association shall be responsible for maintaining
the permitted offsite stormwater facility per the requirements of SW8 961004.
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.
The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
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.
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 a fountain in the onsite pond is listed in
Section 1.6 (1) of this permit.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 020516 Modification
Upon completion of construction of this stormwater facility, 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. A similar certification has been required and received for the offsite
stormwater facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
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, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. 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.
13. 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.
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.
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.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 020516 Modification
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) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
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 5th day of October 2006.
NORTH CAWLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 8

OFFICE USE—ONLY.,
Date Received
Fee Paid
Permit Number
#400
1 SWSozofl(o NCp
)Ic>-4.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied far use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Carsten Jensen / Owner
3. Mailing Address for person listed in item 2 above:
_4536 Technology Drive
City: Wilmington State: NC Zip: 28405
Telephone Number: 910-350-1597
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and
0-t
5. Location of Project (street address):
4540 Technology Drive
5(a 4 S7 K
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From 1-40 West take NC 132 North exit (N. College Rd.). Turn Right on Northchase Parkway S.E.
_Then turn left onto Enterprise Drive. Turn right onto Technology Drive. Site is on left.
7. Latitude : N 34° 18' 33" Longitude: W 770 52' 33" of project
8. Contact person who can answer questions about the project:
Name: Jonathan W. Ham, E.I. Telephone Number: 910-763-5100
D. PERMIT INFORMATION:
1. Specify whether project is (check one):
New Renewal X Modification
Form SWU-101 Version 3.99 Page 1 of

Iej
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number SW8 020516 and its issue date (if known) 08/16/2002
3. Specify the type of project (check one):
Low Density X High Density Redevelop
4. Additional Project Requirements (check applicable blanks):
CAMA Major — Sedimentation/Erosion Control
General Permit X Other
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.
new wet detention pond in addition to existing offsite wet detention pond
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area: 2.46 acres 4. Project Built Upon Area: 69.34 %.
5. How many drainage basins does the project have? 2
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&-
Dra�mage Bastnxl(offstte pond)
_..
Drainage Basin 2�(onstfe pond)
Receiving Stream Name
Smith Creek
Smith Creek
Receiving Stream Class
C Sw
C Sw
Drainage Basin Area
1.61 ac
0.85 ac
Existing Impervious * Area
1.20 ac
0.03 ac
Proposed Impervious * Area
1.17 ac
0.52 ac
% Impervious* Area (total)
73.17%
61.18%
+Impervwus*�`ttSurfaceyA�ea r
Drainage Basin 1
?nei =J,
Drainage i 2
t _ Y K^
On -site Buildings
17,990 sf
13,568 sf
On -site Streets
-
-
On -site Parking
31,482 sf
7,176 sf
On -site Sidewalks
2,380 sf
1,708 sf
Other on -site
-
-
Off -site
i -
-
Total:
IX= 51,852 sf
Y= 22,452 sf
* 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 4

7. How was the off -site impervious area listed above derived? n/a
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. The following 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 ofthe State.
2. No more than square feet ofany lot shall be covered by structures of impervious materials.
Impervious materials include asphalt, gravel, concrete, brick stone, slate or similar material but do not include wood
decking or the water surface ofswimming pools.
3. Swales shall not be filled in, piped or altered except as necessary to provide &-iveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modificationprior
to construction.
S. A/lpermittedruno from outparcels or. fwure development shall be directed into the permiuedstormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity andperformance 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
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
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.
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Initials
• 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 and date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): Tripp En ing Bering, P.C.
Mailing Address: 419 Chestnut Street
City:
Phone: [phone]
VILL APPLICANT'S CERTIFICATION
State:
Zip: 28401
Fax: [phone]
1, (print or type name ofpenson listed in General Information, item 2) _Carsten Jensen
certify that the information included on this permit 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 protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature:
Date: ! 30
Form SWU-101 Version 3.99 Page of

Permit No.
(to be provided by DWQJ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
L PROJECT INFORMATION (please complete the following information):
Project Name: Lot 57 Northchase
Contact Person: Jonathan W. Ham, E.I. Phone Number: [phone]
I -or projects with multiple basins, specify which basin this worksheet applies to: 1
elevations
Basin Bottom Elevation 38.0 ft. (floor of the basin)
Permanent Pool Elevation 41.0 ft. (elevation of the orifice)
Temporary Pool Elevation 42.3 ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area�� sq.ft.
Drainage Area 0.95 ac.
Impervious Area 0.52 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 �� cu.ft. (combined volume of main basin and forebay)
Temporary Pool Volume 5,931 cu.ft. (volume detained above the permanent pool)
Forebay Volume 1,331� cu.ft. (approximately 20% of total volume)
Other parameters
SA/DA1 6.3 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 0.5 in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 1.0 in.
Design TSS Removal2 90 % (minimum 85% required)
FormSWU-102 Rev3.99 Page I of 4

Footnotes:
1. 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).
(7( b. The forebay volume is approximately equal to 20% of the total 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.
It. 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 to be performed prior to use as a wet detention basin
in. A mechanism is specified which will drain the basin for maintenance or an emergency. .
* Pump will be provided for maintenance or 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) ❑ does X does not incorporate a vegetated filter at the outlet.
This system (check one) ❑ does X 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:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition-
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall not be handled in a manner that will 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 3.00 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 3.00 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permuneut Pool Elevation 41.0
Sediment moval El. 38.0 7
------ ---- - Sediment Removal Elevation 38.0 75%
oltom ex-ation 3R.0
---------------- -'--.
Bottom Elevation 38.0 -5%
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 possible.

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: Carsten Jensen
Title: Owner
Address: 4536 Technology Drive Wilmington, NC 28405
Phone
Signal
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, Della C. Baird , a Notary Public for the State of North Carolina , County of
Pener do hereby certify that Carsten Jensen personally
appeared before me this 3O day of J t/ — 2006 , and acknowledge the due execution of
the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
� C ' d
SEAL
My commission expires October 15, 2006

Permit No. S(u$0Za51(0
(to be provided by DW(?)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
OFF -SITE SYSTEM SUPPLEMENT
FOR DEVELOPMENT DRAINING TO PERMITTED OFF -SITE. TREATMENT SYSTEMS
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
off -site system supplement for each off -site stormwater treatment system, appropriate supplement forms for
any on -site stormwater treatment systems, and plans and specifications showing all stormwater conveyances
and drainage details for the project.
I. PROJECT INFORMATION
Project Name: Technology Drive Lot 54, 55. 56
Contact Person: Charles Cazier Phone Number: C2LOA 763-5100
Is all drainage from the project directed to the off -site system) (circle oney Yes No
(� Revnzrni4g t3uA i s crreckd Iv 2,rl rn-sife we+defer, h61_1 pc�id.
H. OFF -SITE SYSTEM INFORMATION (please complete the following information for the off -site
system that will treat runoff from your project):
Permit No. SW8 961004
Project Name: Technology Court
Type of System (wet pond, infiltration basin, etc.): wet pond
Lot No. (if part of a subdivision): 54. 55, 56
How much built upon area draining to the permitted treatment system has been allocated to this
project? 55,500 sf
III. REQUIRED ITEMS CHECKLIST
Prior to issuing an off -site permit, verification of the following information must be provided. Initial in the
space provided to indicate that the following 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.

Applic is Initials
a. Deed restrictions limiting the built -upon area on the site have been recorded.
b. Engineers certification for the existing off -site system has been submitted to DWQ.
c. There are no outstanding Notices of Violation for the off -site system.
d. Off -site system is in compliance with the issued permit.
IV. STORMWATER COLLECTION SYSTEM MAINTENANCE REQUIREMENTS
I. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches
at any time.
2. Accumulated sediment and trash will be removed from the collections system as necessary. Swales and
ditches will be reseeded or sodded following sediment removal.
3. Eroded areas of swales and ditches will be repaired and reseeded. Swales and ditches will be revegetated
as needed based on monthly inspections.
4. The collection system, including 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.
5. The collection system may not be altered in any way without prior approval from NCDENR Division of
Water Quality.
I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the five 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: Carsten Jensen_ Owner
Address:
Phone:
Signature:
r
Note: The legally responsiWparty 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.
1, Della C. Baird a Notary Public for the State of North Carolina I County of
Pender , do hereby certify that Chris Wilcox personally appeared before me this
91 day of Q,u&, 2006 and aclmowledge the due execution of the forgoing infiltration
system maintenance requirements. Witness my hand and official seal,
My commission expires October 15, 2006