SW7070124_CURRENT PERMIT_20070321

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW :022zg l
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2Y-272 �o24
YYYYMMDD

Governor o
��F W f1 TFRO Michael F. Easley, Governor
O G William G. Ross Jr., Secretary
DLU
North Carolina Department of Environment and Natural Resources
1
p Alan W. Klimek, P.E. Director
Division of Water Quality
March 21, 2007
Mr. David O. Parks
1252 Florida Road
Elizabeth City, NC 27909
Subject: Permit No. SW7070124
Parks Land Development
High Density Stormwater Project
Pasquotank County
Dear Mr. Parks:
The Washington Regional Office received a completed Stormwater Application for the subject project on
January 18, 2007. 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 21-1.1000. We are forwarding Permit No.
SW7070124 dated March 21, 2007 to David O. & Katherine E. Parks for the construction and operation of two wet
detention ponds to serve the Parks Land Development located Blount Road in Pasquotank County.
This permit shall be effective from the date of issuance until March 21, 2017 and shall be subject to the
conditions and limitations as specified therein, Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This
request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes,
and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. 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 Roger
Thorpe or me at [phone].
r �7� L Hodge, Regional Supervisor
Surface Water Protection Section
Washington Regional Office
cc: Hyman & Robey PC
Pasquotank County Inspections
✓Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: "Nvw.ncwatertluahtv.ore
943 Washington Square Mall Phone [phone]
Washington, NC 27889 Fax [phone]
None
rthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer- 50% Recycled110% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW7070124
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
David O. Parks & Katherine E. Parks
Pasquotank County
FOR THE
construction, operation and maintenance of stormwater management systems 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 for two wet detention ponds to serve Parks Land Development located on
Blount Road in Pasquotank County.
This permit shall be effective from the date of issuance until March 21, 2017 and shall be subject to the following
specified conditions and limitations:
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
2 of this permit, the Project Data Sheet.
3. A maximum of 3.09 acres of built upon area is allowed on this 5.7 acre 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 approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Parks Land Development
Permit Number:
SW7070124
Location:
Pasquotank County
Applicant:
David O. Parks & Katherine E. Parks
Mailing Address:
1252 Florida Road
Elizabeth City, NC 27909
Application Date:
1/18/2007
Receiving Stream:
UT to Knobbs Creek
Classification of Water Body:
C - Swp
Total Site Area:
5.7 ac.
Drainage Basin:
Basin A
Basin B
Drainage Area to Basin:
1.51 ac
4.06 ac
Total Impervious:
0.33 ac
2.76 ac
Pond Depth:
4.0 feet
4.0 feet
Required Storage Volume:
1,359 cf
9,765 cf
Provided Storage Volume:
2,099 cf
11,253 cf
Required Surface Area:
1,302 sf
10,364 sf
Provided Surface Area:
4,457 sf
11,134 sf
Controlling Orifice:
0.875 in @ elev. 8.5 It
1.75 in @ elev. 7.0 ft

6. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (such as
swales) shown on the approved plans as part of the stormwater
management system without submitting a revision to the permit and receiving approval from the Division.
The 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.
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.
II. SCHEDULE OF COMPLIANCE
The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system.
a. 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 surfaces except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
2. The facilities must be properly maintained and operated at all times. The approved Operation and
Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals.
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency 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.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel of
DWQ. The records will indicate the date, activity, name of person performing the work and what actions were
taken.
5. 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.
6. Upon completion of construction 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water Quality.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of
five years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is
a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality
accompanied by an application fee, 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.
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-
215.6(a) to 143-215.6(c).
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. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for
an extension along with appropriate application fee.
Permit issued this the 21 st day of March, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
ArAlan W. Klimek, P-E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7070124.

Parks Land Development - Pasquotank County
Stormwater Permit No. SW7070124
Designees Certification
1, as a duly
registered Professional Engineer 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.
Signature
Registration Number
Date
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 and 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. All required design depths are provided.
_12. Required drawdown devices are correctly sized per the approved plans.
_13. All required parts of the system are provided, such as a vegetated shelf, forebay. and vegetated
filter if required.
14. The required system dimensions are provided per the approved plans.

OFFICE USE ONLY
Date Received
Fee Paid
Pennit Nurn_ber
A:!:a-o
Sw,4cK I/aa/oy
®1A/Q_I flIry State of North Carolina
NY Ntlf irNpartment of Environment and Natural Resources
Division of Water Quality
SfORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he pholocopied for use as an original
L GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
_Dav id_0—&-Catherine_E
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
—David-2arks.,-0wnPr
3. Mailing Address for person listed in item 2 above:
City:_Elizabeth—City State: —NC 2ip-27949—
'relephone Number: _{-252._—L3.3Q2425
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
_Parks Land Development
5. Location of Project (street address):
City: F1 i7ahPth Ci by County: Pasau4.tan
6. Directions to project (from nearest major intersection):
3- il5' DE--Qfthpintess€r—ti.Qn of SR 1139 (Body Rd) and SR 1135 .(Bount, Rd) —
7. Latitude,: 36014' Longitude: 7601 51 of project
8. Contact person who can answer questions about the project:
Name:Kimberly D. Hamby Telephone Number: 252 ) 335-1888
IL PERMPP INFORMATION:
1. Specify whether project is (check one): _X New Renewal Modification
Form SWU-101 Version 3.99 Page I of

2. If this application Is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density X Fligh Density Redevelop General Permit _Other
4. Additional Project Requirements (check applicable blanks):
_LAMA Major _Sedimentation/L'rosion Control _404/401 Permit _NPDES Storrnwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
Ill. PROJECT INFORMATION
1. In the space provided below, sunin arize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Tn drainage araa 1 stormwater-will-sheet-flow-across_grassed-yards--&-pav€mept
zo-awales_which_drain-to-pond_A.—➢rainage_area_2_stormwater-wi-1l-sheet-f-low-
-across gr-avel-&-pa-yemertt_tn an ,nrlarg ovnd_piping-system which -drains -to
detention pond_B.
2. Stornwater runotl from this project drains to the Pasnnnfank River basin.
3. Total Project Area:_y.7 acres 4. Project Built Upon Area: r5�*- %
5. Flow many drainage areas does the project have? 3
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Receiving Sb eam Class
Drainage Area
Existing Impervious* Area
Proposed Impervious*Area
% Impervious* Area (total)
Impervious" Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
On -site Streets
On -site Parking
On -site Sidewalks
Other on -site
Off -site
Total: 1.51
Total: 4.06
Impervious area is delined 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

r�
7. How was the off -site irpervious area listed above d
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANT'S
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 corupliauce with state stnrmnvater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by struct ures or impervious materials.
Impervious materials include asphalt, gravel, court ere, brick, stone, slate orsinrilar material but do not include wood
decking or the water surface of swimming pools.
3. Smiles shall not be filled in. piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater conu'ol system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the Stale, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENTFORMS
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 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
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
- Not at
Scale
Revision number & dale
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 slonnwater 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):
Mailing Address: P.O. Box 339
City: ramrlan State:plt' ZIP-27921
Phone: L252 ) 335=18$8 Fax: (_242 )-338-5552
VIII. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2) David O. Parks
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 cov rants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .10
Signature: ^ 0-AL Date:
Fonn SWU-101 Version 3.99 Page 4 of

Permit No.
a
(lobe provided by DIVA)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM 1%ECEIVED
WET DETENTION BASIN SUPPLEMENT JAN 18 2007
This form may be photocopied for use as an original
DINQ-IIVARO
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: Parks Land Development
Contact Person: David O. Parks Phone Number: f._25.2)330-2425
For projects with multiple basins, specify which basin this workshect applies to: A
elevations
Basin Bottom Elevation 4 _ 50 ft.
Permanent Pool Elevation _8 . 50 ft.
Temporary Pool Elevation 8.95 ft.
areas .
Permanent Pool Surface Area 4.45 sq. ft.
Drainage Area
Impervious Area
volrunes
Permanent Pool Volume
Temporary Pool Volume
Forcbay Volume
Other parameters
SA/DA I
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
Form SWU-102 Rev 3.99
1.51 ac.
_ 3 3 ac.
(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)
7,472 cu. ft. (combined volume of main basin and forebay)
2 , n99 cu. ft. (volume detained above the permanent pool)
_t 5 3 9 cu. ft. (approximately 20% of total volume)
1.8 (surface area to drainage area ratio fr-onr DWQ table)
.875 in. (2 to 5 clay temporary pool draw -down required)
6.3 in. (10yr storm)
90 % (nrinin unr 85% required)
Page 1 of 4

Footnotes:
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%,rSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008,
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. if a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
---------- e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no sleeper 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.
I. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage casement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
I1I. 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 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 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:
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 -amorally 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 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.
Sediment
Bottom
El. 6.25
-----------
Oil 5.5
EOREBAY
BASIN DIAGRAM
Ull in the blanks)
Permanent Pool Elevation 8 . 5
Sediment Removal Elevation 5 . 5
Bottom Elevation4. 5
MAIN POND
75%
25%
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of

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: D2� � of p ; to . lL
Address: I a S a �l or t d o �� DQ E l o l� Ul C' }=1 c .2
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, `{�\-l0 ry n _e JC rx� < a Notary Public for the State fof,00(`�h C Qj%' ,k tr c\ ,
County of PLA5c Lx&c, X do hereby certify that u'�t Q <� • �� r•I( 5
personally appeared before me this _-D t 9'l- day of DZ C p r h ..e r-. and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
WinANNE L COOPEN
NOTARY PUBLIC
R=OTMK COUNT% NC
SEAL
My commission expires o - I - Q
Form SWU-102 Rev 3.99 page 4 of 4

Permil No.
(to be provided by DIVQ)
State. of North Carolina
Deparinlent of Environment all(] Natural RCSOLIKCS
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORRECEIVED
WET DETENTION BASIN SUPPLEMENT JAN 18 2007
This form may be photocopied for use as an original
DWO Stormwalcr Mamagemcnt Plan Review:
DWQ- ARO
A complete stormwatcr 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
stniclure details.
1. PROJECT INFORMATION
ProjectNamc: Parks r And Development
Con tact Person: David o_ parks PhoncNumber: ( 252) 230-242S
Por projects with multiple basins, specify which basin this woiksliect applies to: —i3
elevations
Basin Bottom Elevation 7 .0 Ct. (floor of the basin)
Pernianent Pool Elevation 7 - 0;, ft. (elevation of the orifice)
Temporary Pool Elevation 7. 94 ft. (elevation of the discharge structure over flow)
areas
Permanent Pool Surfacc Area 1111�134 sq. ft.
Drainage. Area
Impervious Area
vohunes
Permanent Pool Volume.
Temporary pool VOIn111C
Porebay Volume
Other parameters
SA/DA I
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
Fon➢SWU-102 Rev3.99
2-76 ac.
(waterswface area at the orifice elevation)
(on -.rite and (?ff-site drainage to the basin)
(on -silo and off site drainage to the basin)
22,974 cu. ft. (combined volume vfmain Garin anclforeboy)
11 2 S 1 cu. li:. (volume detained above the permanent pool)
4, 91 6 cu. fl_ (approximately 20% of total voluute)
6 (stuface area to drainage area ralio fi-om DIVQ table)
1 75 in. (2 to 5 clay teniporwy pool draw -down required)
6.3 ill. (10yr storm)
90 % (nnnintnnt 85%required)
Page I of 4

Footnotes:
' When using the Division SA/DA tables, the correct SA/DA ratio Ibr peanaucnt pool smog should be compute) base(] upon nac
actual impervious %and pennauc it pool depth. Lfivam interpolation should be employed to dctennine the correct value for non-
standard table entries.
2 In the 20 coastal eouulics, the rcquiremcN fur a vegetative filter may be waived it the wet detculiou basin is designed to pmvidc
90%TSS removal. The NCDENR 13M1' manual provides design tables for both S5%'I-SS removal mid 90%TSS rcatuval.
11. REQUIRED ITEMS CHECKLIST
Tile following checklist outlines design requirements per the Stormwater Best Management Practices IManual
(N.C. Department of Environment, health and Natural Resources, I"ebruary 1999) and Administrative Coale
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 )fie Stormwater Management Permit
Application Form, the agent tuay initial below. If a requirement has not been islet, :attach justification.
Applicants lnilials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forcbay volume is apploximatcly equal to 20% of the basin volume.
C. The temporary pool controls runoff fiom the design storm event.
d. The temporary pool draws down in 2 to 5 clays.
— — — — — — — — — — c. If required, a 30-Cool 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 arc no steeper than 3:1.
It. A submerged and vegetated perimeter shelf with it 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. Mile basin is used for sediment and CIOSIo❑ control during construction, clean out of the
basin is specified) prior to use as a wet detention basin.
m. A mechanism is specifiedt wilier will chain the basin for lnaintenaucc or an emergency.
Ill. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretrcatment including forebays and) the
vegetated filter if one is provided.
iris system (check one) . 0 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
1 . After every significant runoff producing rainfall went 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.
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 in 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 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads
sedimcut
13ollom
EI. 4.75
- u�_
u
FOR BAY
2 . 25 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in die blanks)
Permanent Pool Elevation —7
Sediment Removal Elevation 4 0-----------------------------------------
75°/
13oltom Elevation 25'%
MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encom'agcd to grow along the vegetated shelf and forebay berm.
6. If d1c basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to lire Maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of

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:
Address: 1 :;z S a 'Ft r>'; d� U -zo 6e 44— C i) K) L �90�
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-�1Qr�orn tz S C , a Notary Public for the State of Cox{ h C Goo\ t'f-�u
County of PQ,.sq , (to hereby certify that f�, v t d O • PG c k5
VA
personally appeared before me this �Dl0 day of C)AC I, and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
MARIANNE J. COOPER
NOTARY PUBLIC
P"WOTANN COUNTY NC
SEAL
My commission expires cg
Form SWU-102 Rev 3.99 Page 4 of