SW8011003_CURRENT PERMIT_20020107

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW �izIx 5
DOC TYPE
OCURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
WYYMMDD

(Jicnael 1=. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
6
p
January 7, 2002
Mr.Charles S. Hester, Jr., Managing Partner
Mitchell Village, LLC
190 Oakleaf Drive
Pine Knoll Shores, NC 28512
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Wilmington Regional Office
Subject: Permit No. S W8 011003
The Landings at Mitchell Village
High Density Stormwater Project
Carteret County
Dear Mr. Hester:
The Wilmington Regional Office received a complete Stormwater Management Permit Application forThe Landings
at Mitchell Village on October 10, 2001. Staff review of the plans and specifications has determined that the project,
as proposed, will comply with the Stormwater Regulations set forth in Title I SA NCAC 2H.1000. We are
forwarding Permit No. S W 8 011003 dated January 7, 2002, for the construction of The Landings at Mitchell Village.
This ,.,--rmit shall be effective from the date of issuance until January 7, 2012, 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 150E 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 Noelle Lutheran,
or me at [phone].
Sincerely,
G�:L C�tG
Rick Shiver
.Water Quality Regional Supervisor
RSS/nml: S:1WQSISTORMWATIPERMIT10I1003.JAN
cc: Ron Cullipher, P.E,
Morehead City Inspections
Division of Coastal Management
Noelle Lutheran
Wilmington Regional Office
Central files
i��A
okC(]ENR
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax[phone] Customer Service
800-623-7748

i
Staie Storniwaler systems
Permit No. SW8 0l 1003
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRON1\1ENT 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 1S HEREBY GRANTED TO
Mitchell Village, LLC
The Landings at Mitchell Village
Carteret County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H .1000 {hereafter referred to as the "stormwater rules' and the approved stormwater management plans and
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 January 7, 2012 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
I . This permit is effective only with respect to the nature and volume of stormwater described in the application
and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
234,544 square feet of impervious area.
;. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved
plans.
5. 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.
6. The runoff from all built -upon area within the permitted drainage area of this project must be directed into
the permitted stormwater control system. A permit modification must be submitted and approved prior to
the construction of additional built -upon area from outside of the approved drainage area.
2

State Storniwaaer imatta,etttent Systems
Permit No. SW8 011003
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
The Landings at Mitchell Village
SW8 0110011
Application Date:
Name of Receiving Stream/Indea 4:
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, fie:
Buildings, ft2:
Streets, ft2:
Parking, ft2:
Sidewalks, ft2:
Storage, ft2:
Offsite Area entering Pond, ft2:
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, fi3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Carteret County
Mr.Charles S. Hester, Jr., Managing Partner
Mitchell Village, LLC
190 Oakleaf Drive
Pine Knoll Shores, NC 28512
October 10, 2001
Peltier Creek / White Oak River 120-36-11
1,SB„
n/a
7
11
10,07
234,544
115,094
28,154
81,678
3,018
6,600
None, per engineer
9,212
9,221
.19,594
24,884
13.25
2" T pipe
3

State Stormy+'ater Maiiageme)a Systcnis
Permit No. SW8 011003
11. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's 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.
The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes and vegetated filter.
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, flow spreader, catch basins and
piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel of
DWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system.
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. 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 Iisted below:
a. Any revision to any item shown on the approved plans, including the stormwater management
measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the drainage area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the
approved plans, prior to construction. If the proposed BUA exceeds the pemitted amount, a modification to
the permit must be submitted and approved prior to construction.
4

• State Stonnwater Management Systems
Permit No. SWS 011003
11. 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.
12. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days.
13. Prior to the sale or lease of any portion of the property,'the permittee shall notify DWQ and provide the
name, mailing address and phone number of the purchaser or leasee. An access/maintenance easement to the
stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be
restricted by the sale or lease of any portion of the property.
14. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
15. 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. 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 maybe appropriate. The approval of this request will be considered on its merits and mayor may
not be approved. Responsibility for compliance with all permit conditions remains with the Permittee until
such time as the Division approves the formal permit request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction.
4. In the event that the facilities 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.
Permit issued this the 7th day of January, 2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
I" A
Gregory J. T1—iorpe, Ph.D., Acting Director
Division of Water.Quality
By Authority of the Environmental Management Commission
�1

r
State Stormwater Managemcht Systems
Permit No, SW8 011003
The Landings at Mitchell Village
Storm�vater Pern-iit No. SW8 011003
Carteret 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
R

State Stormwater Maimoement Systems
Permit No, SWS 011003
Certification Requirements:
cc
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the system,
4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans,
6. Trash rack. is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system,
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
_12. All required design depths are provided.
_13. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
_14, The overall dimensions of the system, as shown on the approved plans, are provided.
NCDENR-DWQ Regional Office
Morehead City Building Inspector
7

J
-�1,Ti .:'�. yi'.t.e•rk�dx i� a v.JRk .-:ki>>kfi W�,v -.u3. L�VA�IC'.lJ.7iw.Ol�l lwYakYh �F.eA4}tic.
Date Received
Fee Paid
Permit Number
D - - (D
•. • 1
80//003
State of North Carolina
Department of Environnment�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 mine of the corporation, individual, etc. who owns the project):
Mitchell Village; L.L.C.
2... Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Charles S. Hester, Jr., Managing Partner
3. Mailing Address for person listed in item 2 above:.-
190 Oakleaf Drive
City: Pine Knoll Shores State: N.C. Zip:_ 28512
Telephone Number: ( 252 ) 342�0404• __.
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, -etc.) -
The Landings at Mitchell -Village
5. Location of Project (street address):
Pittman Avenue
City: Morehead City County: Carteret
b. , Directions to project (from nearest major intersection):
From the Intersection of U.S. Hwy. 70 & 14.C. Hwy.24, take N.C. Hwy. 24
7. Latitude: 760 47' 40" Longitude: 340 43' 59" of project
8. Contact person who can answer questions about the project:
Name: Ronald D. Cullipher Telephone Number: ( 252 247-7479
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New... Renewal Modification
14
Form SWU-l01 Version 3.99 Page.1 of 4

2. If this application is being submitted as the resultf a renewal or modification to an existing permit, list the -
existing permit number SW8 000707 _ _ and its issue date (if known) August 11, 2000
3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major X Sedimentation/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
I. 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 .
Wet Detention Basin to Serve The Landings at Mitchell Village
2. Stormwater runoff from this project drains to the White. Oak River basin.
3. Total Project Area: 1,�. 07 acres 4. Project Built Upon Area: 54
5. How many drainage areas does the project have?_1
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.
Receiving Stream Name
Peletier Creek
Receiving Stream Class
SB#
Drainage Area
10.068 Ac .
Existing Im ervious* Area
0
Proposed Im ervious"Area
234,544
% 4n ervious" Area (total)
54%
fF'FS.:fj'�'P'.°'j A
Im er�riousTM,+.
Stucfar+?Area Ff
Z,X Y y�
��t?rattgee1h�<��.
F = tS��'.ratnage#Ares 2'
On -site Buildings
115,094 SF
On -site Streets
28,154 SF
On -site Parking
81,678 SF
On -site Sidewalks
3,018 SE
Other on -site
Utorage 6,600 SF
Off -site
0
Total: 234,544 SF
Total:
" Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-10l 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 of the State..
2. 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 swimming pools.
3. SwaIes shalt not befilled in, piped, or altered except as necessary to provide driveway crossings.
4. BuiIt-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 control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will run with the. land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement foim(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 SM-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
k2
Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
4+
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 foliowing'required information by initialing in the space
provided next to each item.
• 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 NCDEN R)
• 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)
VIL 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: 151-A Hwy. '24;
City: Morehead City State: N.C. Zip: 28557
Phone: [phone] Fax.( 252 1 247-4098
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information,, item 2) S. H, .
Charles S ester, Jr. _
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: C3+ - L b - U I
Form SWU-101 Version 3.99 Page'4 of 4

Permit No. Sw8 000707
(to be provided by DWQ )
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMITAPPLICATION 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 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: The Landings at Mitchell Village
Contact Person: Charles S. Hester, Jr. Phone Number: ( 25Z) 342-0404
For projects with multiple basins, specify which.basin this worksheet applies to: _pond - #2
elevations
Basin Bottom Elevation -__ 4.0 ft. (floor of the basin)
Permanent Pool Elevation 11.0 ft. (elevation of the orifice)
Temporary Pool Elevation _13_. 25 ft. ,(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area . 9221 sq. ft. (water surface area at the orifice elevation)
Drainage Area 10,068 ac. (on -site and off -site drainage to the basin)
Impervious Area ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA1
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
35,002 cu. ft. (combined volume of main basin and forebay)
_24.884 cu. ft. (volume detained above the permanent pool)
8. 330 cu. ft. (approximately 20% of total volume)
2.1%
2 in
1"
in.
go
%
(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

Footnotes:
1 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 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.
.!0 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
n/a
a.
b.
c.
The permanent pool depth is:between 3 and/feet (required minimum of 3 feet).
The forebay volume is approximately equal. to 20% of the basin volume..
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 Iess (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 prior to use as a ,wet detention basin.
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including, forebays and the
vegetated filter if one is provided.
This system (check one) 0 does' 6 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

Permit No. S(N ocp7C)
(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 _' = '
µ This farm may be photocopied for use as an'original
DWQLStormwater 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 N11 Name: MI)
ir0c, liu
C�
1
oIxt: �u_ ��tLt. q&4
Contact Person: 1?-LE5
S . _l- ifZE -
P Number: f 5
For projects with multiple basins, specify which
basin this worksheet applies to:
5 ce- ,rro selevations
Basin Basin Bottom Elevation
ft.
(floor of the basin) '..
Permanent Pool Elevation
ft.
(elevation of the orifice)
Temporary Pool Elevation
}
ft.
(elevation of the discharge structure overflow)'
areas
Permanent Pool Surface Area
, N�o
sq. ft.
(water surface area at the orifice elevation)
Drainage Area
p ,0
ac.
(on -site and off -site drainage to the basin)
Impervious Area
5.0
ac.
(on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
S l
cu. ft.
(combined volume of main basin and forebay)
Temporary Pool Volume
ti g9 !
cu. ft.
(volume detained above the permanent pool)
Forebay Volume
Qil:
cu. ft.
(approximately 20% of total volume)
Other parameters
SA/DAl 9 pr,o{surface area to drainage area ratio from DWQ table)
Diameter of Orifice in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 1- in.
Design TSS Removal 2 8 % (minimum 85% required)
Form 5WU-102 Rev 3.99 Page 1 of 4

Footnotes:
1 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 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 pirovides 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.
Applicast� itials . 3 � � � . �. , , , . ��--
E a. The permanent pool depth is between 3 andXfeet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume..
1 — c. The temporary pool controls runoff from the design storm event.
62— d. The temporary pool draws down -in 2 to 5 days.
e. If required, a 30-foot vegetative'Alter is provided at the outlet (include non -erosive flow
calculation's) _
f. The basin.length to width ratio -is, greater than 3A. • k
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
_ I. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined. as the wet detention ,basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 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:
I. 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 5.25 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay, the sedimentsh'alhbe ternoved.
BASIN DIAGRAM `
(fill rn the blanks)
Permanent Pool Elevation 1- • 0 ••�' .
Sediment Re oval El. 8. 75 75
-------------- -- Sediment Removal Elevation 5.75 F251%
Bottom Ele �tion S:o qb--------------------------------4------------:0
Bottom Elevation
I
FOREBAY
MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50%a of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or.to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99
Page 3 of.4

7. All components of the wet detention basin system -shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: Charles S. Hester, Jr.
Title: Managing Partner
Address: 190 Oakleaf Drive, Pine Knoll Shores, N.C. 28512
Phone:. [phone] _
Signature: �L.
Date: '�'-t - Z 6 -vt
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.
Matthew L. Montanye North Carolina
, a Notary Public for the State of ,
County of Craven , do hereby certify that Charles S. Hester, Jr.
personally appeared before me this 26th day of September 2001 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
�`'" �.. M -lr''
• N •�
A... '•.'9
NpTARy • .c
00O�
SEAL -
My commission expires October 29, 2003
Form SWU-l02 Rev 3.99 Page 4 of 4