SW8060622_CURRENT PERMIT_20060703

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE7`1lp
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YYYYMMDD

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July 3, 2006
Mr. Mark L. Maynard, Manager
Providence Properties, LLC
1510-A South Third Street
Wilmington, NC 28401
Subject: Stormwater Permit No. SW8 060622
Providence Park
High Density Project
New Hanover County
Dear Mr. Maynard:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Providence Park on June 26, 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 060622 dated July 3,
2006, for the construction of the subject project.
This permit shall be effective from the date of issuance until July 3, 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 Paul Bartlett, or me at [phone].
Sincerely
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlptb: S:1WQS1STORMWATERIPERMIT1060622.juI06
cc: Richard A. Moore, P.E., McKim & Creed, PA
Tony Roberts, New Hanover County Building Inspections
City of Wilmington Stormwater Services
Beth E. Wetherill, New Hanover County Engineering
Paul T. Bartlett, P.E.
Wilmington Regional Office
Central Files r`Karolina
j1 rrtura,
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 29405 Phone [phone] Customer Service
Wilmington Regional Office Internet: n•w�n•.ncNvateruuality.org Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycledli 0% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 050622
E
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
Mark L. Maynard and Providence Properties, LLC
Providence Park
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 July 3, 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 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 627,700 square feet of total
impervious area (runoff from 603,306 and 24,394 sq ft of impervious area to
Pond #1 and Pond #2, respectively). The permitted impervious area may be
reduced by requirements for a wetlands permit.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans. There is no allotment for future built -upon
area at the site.
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 7

State Stormwater Management Systems
Permit No. SW8 060622
6. The following design criteria have been provided in the two wet detention ponds
and must be maintained at design conditions. The permitted impervious area
may be reduced by requirements for a wetlands permit.
Design Criteria
Pond #1
Pond #2
a. Drainage Area, acres:
Onsite, ft2
Offsite, ft2
29.6
1,289,376
None
2.05
89,298
None
b. Total Impervious Surfaces, ft :
OS Buildings, ft2:
OS Parking, ft2:
OS Sidewalks, ft2:
OS Roads, ft2:
603,306
182,081
352,400
68,825
None
24,394
None
None
None
24,394
c. Design Storm, inches
1.0
1.0
d. Pond Depth, ft
4.0
4.0
e. TSS removal efficiency, %
90
90
f. Permanent Pool Elev., FMSL
28.0
32.0
g. Perm. Pool Surface Area, ft
74,072
5,650
h. Permitted Storage Volume, ft
50,733
13,049
i. Temporary Storage Elev., FMSL
28.66
33,91
, Controlling Orifice, "O pipe
3.0
0.50
k. Permitted Forebay Volume, ft
48,887
3,421
I. Receiving Stream/River Basin
Prince George Creek / Cape Fear
m.Stream Index Number
18-74-53
n. Classification of Water Body
C; SW
o. Max. horsepower for a fountain
314 118
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
c. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 060622
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 a fountain for Pond #1 and Pond #2 is 314
and 118 horsepower, respectively.
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.
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.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 050622
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
1. 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) 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 3rd day of July 2006.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
o
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 060622
Page 1 of 2
Providence Park
Stormwater Permit No. SW8 060622
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 project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW8 060622
Page 2 of 2
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. 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 7 of 7

1 State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
1. GENERAL INFORMATION:
1. Applicant's name (specify the name of the corporation, individual, etc. who owns the project):
Providence Park Properties, LLC
2. Print Owners/Signing Official's name and title (the person legally responsible for facility and compliance):
Mark L. Maynard, Member/Manager
3. Mailing Address for person listed in item 2 above:
1510-A South Third Street
City: Wilmington State:
Telephone Number: 910-251-5030
NC
Zip
28401
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Providence Park
5. Location of Project (street address):
3700 North College Road, Wilmington, NC 28405
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
Travel 2.70 miles North on US 117 from the intersection of Gordon Rd. & US 117. The site is located on
the right and can be accessed from an existing service road that runs parallel to US 117.
7. Latitude: 34°18'59"N
Longitude: 77°52' 51 "W
8. Contact person who can answer questions about the project:
Name: Richard A. Moore, PE
It. PERMIT INFORMATION:
1. Specify whether project is (check one)
X New
Telephone Number
Renewal
of project
910) 343-1048
Modification
Form: SWU-101 Version 3.99 Page 1 of

Form: SWU-101 Version 3.99 Page 2 of 4
5-tog o66 �GZ
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
5
the existing permit number NIA and its issue date (if known) NIA
3. Specify the type of project (check one):
❑ Low Density ® High Density ❑ Redevelop ❑ General Permit ❑ Other
4. Additional Project Requirements (check applicable blanks):
❑ CAMA Major ® Sediment/Erosion Control ® 404/401 Permit ❑NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center
at 1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one
to two pages) describing stormwater management for the project.
All stormwater will be captured through the means of a storm sewer system and conveyed to wet detention pond(s)
for treatment and story
2. Stormwater runoff from this project drain to the
3. Total Project Area: . 38.61 Acres
5. How many drainage areas does the project have?
rz
Prince George Creek �Lx�� �_v A4_Iry eel e1i.7
4. Project Built Upon Area: 38.57 %
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.
�. « �;
Basiii�aiz�forii7ation t,�s.�.,,
,art �r.,?;Draina
..,<�TatalDiarna eBasm ,.,
a asrnl`$ :
,9 B"
;€'Draina're Basin 2' 9
Receiving Stream Name I
Prince George Creek
Prince George Creek
Prince George Creek
Stream Class
C; SW
C; SW
C; SW
-Receiving
Area
36.56 ac
29.60 ac
2.05 ac
-Drainage
Existing Impervious* Area
0 ac
0 ac
0 ac
Impervious* Area
14.10 ac
13.85 ac
0.56 ac
-Proposed
% Impervious* Area (total)
39.57%
46.79%
27.32%
Im ervtous•, iirface Aria,;,
;:Total Drab - i , ,_„1.;
,rana e.Basm,1 .,...
Draina .Basin!2,,.,
On -site Building Lots
3.87 ac I sf
4.18 ac 1182,081 sf /
0 ac
On -site Asphalt Road
0.56 ac / 24,394 sf
0 ac
0.56 ac / 24,394 sf
On -site Parkin
8.09 ac / 352,400 sf
8.09 ac / 352,400 sf ✓
0 ac
On -site Sidewalks
1.58 ac / 68,825 sf
1.58 ac / 68,825 sf
0 ac
Other on -site 1
0 ac
0 ac
14 0 ac
Off site Z
0 ac . �a �
0 ac Q
0 ac
Total:
1 . ac / 61 sf
13.85 ac 1 sf
0.56 ac / 24,394 sf
* Impervious area is defined as the built upon area including, but'not
parking areas, sidewalks, gravel areas, etc.*_$ �9
SEAL
025b03
01%.#A.
�l/llllllltt�
, roads,

t
-
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''
r
.� �'
� r
!� �
�
. �
�Y
1
I
�,` �`
�J j/
fir!
,r. -�
F .. .�3i
_��,� i-r
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7. [-Low was the off -site impervious area listed derived?
NIA
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels and future development prior to 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.
The following covenants ore intended to ensure ongoing compliance with state management permit
number as issued by the Division of Water Quality. These
covenants my not be changed or deleted without the consent of the State.
Z. No more than square feet of any lot 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 swinuning 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 nnrnnagetnent permit
modification prior to construction.
S. All permitted runofffrom out parcels orfuture development shall be directed into the permitted
stormwater control systetn. 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 item 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 Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form: SWU-101 Version 3.99 Page 3 of

` VI. -SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. The complete application
package should be submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Manai�emcnt Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of�$4.21T(payable to NCDENR) -4 fc*O E,tt'11 4 JeAJA
• Detailed narrative description of stormwater treatment/management:
• Two copies of plans and specifications, including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VI. 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): McKim & Creed, PA
Mailing Address: 243 North Front Street
City: Wilmington State: NC
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
Zip
28401
1, (print or type naive of person listed in General Information, item 2) Mark L. Maynard, Member/Manager
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 21-1.14D0.
Signature:
Date: Y d(o
Dona: SWU-i01 Version 3.99 Page 4 of

Permit No. 8 06 C) C _,2 7—
(to be provided by DWQ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application farm, 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: Providence Park
Contact Person: Richard A. Moore, PE Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet'applies to: DA 1
elevations
Basin Bottom Elevation
24.00
ft.
Permanent Pool Elevation
28.00
ft.
Temporary Pool Elevation
28.66
ft.
areas
Permanent Pool Surface Area
74,072
sq. ft.
Drainage Area
29.60
ac.
Impervious Area
13.85
ac.
volumes
Permanent Pool Volume
241,266
cu. ft.
Temporary Pool Volume
50,733
cu. ft.
Forebay Volume
48,887
cu. ft.
Other parameters
SA/DA1
3.96
Diameter of Orifice
3.0
in.
Design Rainfall
1
in.
Design TSS Removal2
90
%
(floor of the basin)
(elevation of -the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage area ratio from DWQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required)
Form SWU-102 Rev 3.99 Pagel of4

Footnotes:
When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to detemnne the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR f3MP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
~Rkynn 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
� /A calculations)
1" 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).
a
J.
k.
Vegetative cover above the permanent pool elevation is specified.
A trash rack or similar device is provided for both the overflow and orifice.
A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
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.
y[�rN 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 ogre) 0 does v0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does v0 does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of

Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
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.
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.
-310' P4 itIjf
When the permanent pool depth reads 1-@ feet in the main pond, the sediment shall be removed.
3 a/
When the permanent pool depth reads ,M feet in the forebay, the sediment shall be removed.
-2 C
Sediment Remova EI. Df- 0
Bottom Elevation\ 24.00
FOREBAY
POND 1
BASIN DIAGRAM
(fill in the blanks) P-16
Permanent Pool Elevation 28.00 y13/Gf
Sediment Removal Elevation Q
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I—
Bottom Elevation 24.00 T 9-
2:
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.
G. 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.
7. All components of the wet detention basin system shall be maintained in good working order.
Form SWU-102 Rev 3.99 Page 3 of 4

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: Mark L. Maynard
Title: Member/ManIger, Providence Park Propertit
Address: 151-0-A South Third Street, Wilmington, NC
Phone: [phone]
Signaturc=
Date : 6
G
O1'
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.
I, ,�(f ([ � k . l QC" r lS , a Notary Public for the State of A,
County of L)P v-la, do hereb+� certify that
personally appeared before me this day of �� , .060(' , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
�E K: Moq
SOT ;
r
dw. .
y'•.• pUg`� Z.
�ygNOVER �"v
SEAL
My commission expires J u`vu- Q-D Q { Q
2
r4
Form SW U-102 Rev 3.99 Page 4 of 4

,-$? 18) 1 -3 14 &"
IAJJ rz
KT
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W-X"rjl
LAX-01

.26
Permit No."7a' 8
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION
Project Name: Providence Park
Contact Person: Richard A. Moore, PE Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet applies to: DA 2
elevations
Basin Bottom Elevation
28.00
ft.
Permanent Pool Elevation
32.00
ft.
Temporary Pool Elevation
33.91
ft.
areas
Permanent Pool Surface Area
5,650
sq. ft.
Drainage Area
2.05
ac.
Impervious Area -
0.56
ac.
volumes
Permanent Pool Volume
10,849
cu. ft.
Temporary Pool Volume
13,049
cu. ft.
Forebay Volume
3,421
cu. ft.
Other parameters
SA/DAI
2.48
Diameter of Orifice
'/2"
in.
Design Rainfall
1
in.
Design TSS Removal2
90
%
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage area ratio from DWQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4

b 106 ery �. Z
Footnotes:
O E 0E0��-2--
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.
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 1:3MP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5.days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
J_
k.
Vegetative cover above the permanent pool elevation is specified.
A trash rack or similar device is provided for both the overflow and orifice.
A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
in. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does v0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does v0 does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

/1"le.
Maintenance activities shall be performed as follows;
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced
to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an
appropriate manner and shall be handled in a manner that will not adversely impact water quality (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 3.0
When the permanent pool depth reads 3.0
Sediment RemovahE1. 29.00
Bottom Elevation\ 28.00
FOREBAY
feet in the main pond, the sediment shall be removed.
feet in the forebay, the sediment shall be removed.
POND 2
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 32.00
Sediment Removal Elevation 29.00
Bottom Elevation 28.00
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.
7. All components of the wet detention basin system shall be maintained in good working order.
Form SWU-102 Rev 3.99 Page 3 of 4

i acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: Mark L.-Maynard
Title: Member/Manager, Providence Park Properties, LLC
Address: 1510-A South Third Street, Wilmington, NC 28401
Phone: [phone]
Signature:
Date :
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
I, 44e_11 W" �_- MC)rr(s , a Notary Public for the State of Onr_ c_Q�Ot �-O,_ ,
County of It �ej_O_NC[tnoo; ,, do hereby certify that ,-V) O"k, nr)a �LlC�G�
personally appeared before me this Z +� day of �l�y1Q , �� , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
E K M0
'•,,�QU BCj
1.�G '
J.
-ygN0�� �av��.
SEAL
My commission expires ZUyle-_ 3Z , a-0 t 0
Form SWU-102 Rev 399 Page 4 of 4

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FILE—MODE
714 MEMORY T
* * COMMUNICATION RESULT REPORT ( JUL. 7.2006
OPTION
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
ADDRESS (GROUP)
------ 9-2518232
P. 1
8:56AM )
TTI NCDENR WIRO
RESULT PAGE
-0--------------P--16- 16
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
[phone]
Michael F. Easley, Governor William 0. Ross Jr., Secretary
}ate: 07/07/2006
To: Richard A. Moore
CO: McKim & Creed, PA
FAX #: (91_)251-8282
FAX COVER SHEET
0 pages (excluding cover) 19
From: Miriam Hu lies
Division: Express Permitting
FAX#: [phone]
REMARKS: Providence Park, Hard_copy to follow by mail.
127 Cit dinal Drive Extension, W Imington, N.C. 26405-3845 Tdcphone (910) 796-73U Fax[phone]
An Equal Opportu 4 Affirmative Acdon Cmployer