SW8020426_CURRENT PERMIT_20040305

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

of wArF9
4 -r
Mr. Craig Chamberlin, President
Marine Federal Credit Union
165 Center Street
Jacksonville, NC 28540
Dear Mr. Chamberlin:
Michael F. Easley, Govemor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P,E.,Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
March 5, 2004
Subject: Permit No. SW8 020426 Modification
Marine Federal Credit Union
High Density Stormwater Project
OnsIow County
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Marine Federal Credit Union on March 5, 2004. 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 020426
Modification dated March 5, 2004, for the construction of Marine Federal Credit Union.
This permit shall be effective from the date of issuance until March 5, 2014, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to the
Operation and Maintenance requirements in this permit. Failure to establish an adequate system
for operation 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, 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 Laurie Munn, or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/:Ism S:IWQSISTORMWATIPERMIT1020426Mod.mar04
cc: John L. Pierce, PLS
Onslow County Building Inspections
Laurie Munn-- -- _ _
Wilmington.RegionalDffce j
Central Files ;41
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone] Customer Service
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax [phone] NNA

State Stormwater Management Systems
Permit No. SW8 020426 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Marine Federal Credit Union
Marine Federal Credit Union
Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with thet
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 March 5, 2014, and shall be subject
to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described on page 3 of this permit, the Project Data Sheet. The stormwater control has
been designed to handle the runoff from 218,029 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of this
permit, and per approved plans.
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. A permit modification must be
submitted and approved prior to the construction of additional built -upon area from
outside of the approved drainage area.
OA

State Stormwater Management Systems
Permit No. SW8 020426 Modification
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
Drainage Area, acres:
Onsite, sq. ft.:
Offsite, sq. ft.:
Total Impervious Surfaces, sq. ft.:
Pond Depth, feet:
TSS removal efficiency:
Permanent Pool Elevation, FMSL:
Permitted Surface Area, sq. ft.:
Permitted Storage Volume, cubic ft.-.
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Permitted Forebay Volume, cubic ft.:
Marine Federal Credit Union,
SW8 020426 Modification
Onslow County
Mr. Craig Chamberlin, President
Marine Federal Credit Union
165 Center Street
Jacksonville, NC 28540
March 5, 2004
Half Moon Creek / White Oak
19-6
" C NSW"
6.89
300,128
none, peir'engineer
218,029
5.5
90% (no filter is required)
46.50
15,915@Permanent Pool
18,101
47.57
1.5" � (drawdown in 2-5 days)
11,745
3

State Stormwater Management Systems
Permit No. SW8 020426 Modification
II. SCHEDULE OF COMPLIANCE
1. 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.
Decorative spray fountains will be allowed in the stormwater treatment system, subject to
the following criteria:
a. The fountain draws its water from less than 2' below the permanent pool surface.
b. Separated units, where the nozzle, pump and intake are connected by tubing, may
be used only if they draw water from the surface in the deepest part of the pond.
C. The falling water from the fountain must be centered in the pond, away from the
shoreline.
d. The maximum horsepower for'the fountain's pump is based on the permanent
pool volume. The maximum pump power for a fountain in this pond is 1/8
horsepower.
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 listed below:
4

State Stormwater Management Systems
Permit No. SW8 020426 Modification
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 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 pen -nit 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 amount permitted under this permit, a modification to the permit must be submitted
and approved prior to construction.
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. At least 30 days 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 stonnwater 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.
13. The permittee must maintain compliance with the proposed built -upon area and ensure
that the runoff from all the built -upon is directed into the permitted system.
14. 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 penmittee 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.
15. The permittee must maintain the current permitted drainage area. No additional runoff
from outside of the permitted drainage area boundary may enter the permitted stormwater
facilities without first applying for and receiving a permit modification.
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 maybe 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) which have jurisdiction.

State Stormwater Management Systems
Permit No. SW8 020426 Modification
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
as may be required by this Division, such as the construction of additional or replacement
stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal business
hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address changes
within 30 days.
Permit issued this the 5th day of March 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Difector
Division of Water Quality
By Authority of the Environmental Management Commission
C9

i TO s
OFFICE USE ONLY
Date R lved
Fee Paid
Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
/►'IQTIYIG FPc�r_ra �t'ce��� C�[Yl+OY1
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
ItoS S#.
City: -�ckcKSorn\4'Jie, State: NJ Zip: aC65'1 D
Telephone Number: ( q 10 } 3 5 5- 5 L D O
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Marino retleraa( Credk'4, L. neon
5. Location of Project (street address):
H I D e 5 tern Iv
City: `Tcxc,ks or% �J(e� County: On S I D W
6. Directions to project (from nearest major intersection):
Loi0.fed oy, �or�hcrn soda c� 1�1CSR if-kZb a Qr�ximaFe,ly a rn,ip
Nedbwe- s+ interSec--i+bn n-F NCsR 1i-17U 0nc/ U I --I
7. Latitude: 3'J` H 1 i 5 (,.7'' Longitude: 7 `7 Li! A. ttt of project
8. Contact person who can answer questions about the project:
Name: h /f' ! e C E'. �j SSGG %G( J. Telephone Number: L9 1 D
II. PERMIT INFORMATION:
1. Specify whether project is (check one)
New
Form SWU-101 Version 3.99 Page 1 of
Renewal K_Modification

m

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number Zku 8 C?2,042(-) and its issue date (if known) 7
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 XSedimentation/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.
Inlet` be_4erJ,nn Aci s iy)
2. Stormwater runoff from this project drains to the bi k I �P Da 1< River basin.
3. Total Project Area: C o _ % 9 acres 4. Project Built Upon Area: % oC . 7 %
5. How many drainage areas does the project have?I
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
iJCLWMooA 0 e
Receiving Stream Class
C
Drainage Area
5
Existing Impervious* Area
Proposed Impervious"Area
, O I acre 5
% Impervious* Area (total)
Impervious* Surface Area
Drainage Area I
Drainage Area 2
On -site Buildings
Cr 14 S
On -site Streets
_ p _
On -site Parking
J q 6 -
On -site Sidewalks
_ 0_
Other on -site
^ D _
Off -site
1 0
Total: 1.3 b a S . -f.
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-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? ti / f T
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
N, A 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 N' /9 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. Swales shall not he 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 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 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
c

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 Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including: /
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): J d Le v-
Mailing Address0_-
City:Gksonyi 11�. U State: _/t/C Zip:
Phone: ( Q1 1 D ) 7 J� a -� Fax: ( c l 1 O
VJIL APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2) 6 ("tg I Q C kam l er kr_, Pre s j de r'-r(C,e bl)
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 21-1.1000.
Signature:
ra i � Clorylher!,- n
Form SWU-ibi Version 399 Page 4of4
Date: 0` 11 io+

Permit No. W IS 606 1-12-
(to he 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: Mi2t•inz� 1=iffd-ered ereji'`f Uriloki
Contact Person lz=e Phone Number:
For projects with basins, specify which basin this worlcsheet applies to: N f 14
elevations
Basin Bottom Elevation y 1, ()t7 ft.
Permanent Pool Elevation L4 6. 50 ft.
Temporary Pool Elevation 4 7. 5 -7 ft.
r
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 91 % ft. (water surface area at the orifice elevation)
Drainage Area ac. (on -site and off -site drainage to the basin)
Impervious Area _ 5, a i ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SAIDA I
Diameter of Orifice
Design Rainfall
Design TSS Removal Z
Form SWU-lot Rev 3.99
'+5. �)b.cu. ft. (combined volume of main basin and forebay)
1 %3 I O I cu. ft. (volume detained above the permanent pool)
1 1) `7 45 cu. 8. (approximately 20% of total volume)
L1. (aSq (surface area to drainage area ratio from DWQ table)
1.50 in. (2 to 5 day temporary pool draw -down required)
in.
90 % (minimum 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% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
P a.
DIVI b.
ilk C.
r %7rc�v d.
e.
The permanent pool depth is between 3 and 6 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.
The temporary pool draws down in 2 to 5 days.
If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
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 Voes not incorporate a vegetated filter at the outlet.
This system (check one) 0 does Ydoes not Incorporate pretreatment other than a forebay.
Form SWU-102 Rev 399 Page 2 of 4

f

Maintenance activities shall be performed as follows:
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 4-. 1 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 1-V - 1 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 49.50
Sediment Re oval El. �Qj 75 0
-------------- - Sediment Removal Elevation �� Bottom Ele ation y I .a� %------------------------------- ----v-----1!2
oBottom Elevation M _ 0 5 Z.
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of

• .,. �r _
_ _ i 5 1 ., 1, ,. ,
f.. ., _.
� � L. �. ..

1. 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
Title
Address:
Phone
Signa
Date:
J]
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.
a Notary Publ�for e State of
Countyof /�/j(� , do hereby certify thatel
personally appeared before me this day of 09 5,and acknowledge the due
U.
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
\\�O\11�ULLrOC11��iii,��
C.
P [I
V/V/lilC11111\\\\\\
SEAL,
My commission expires ld—L'
��/s 4&�egc-
Form SWU-102 Rev 3.99 Page 4 of 4

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OF W A TF9
rr� �
M
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
July 16, 2002
Mr. Craig Chamberlin, President & CEO
Marine Federal Credit Union
165 Center Street
Jacksonville, NC 28540
Subject:
Dear Mr. Chamberlin:
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
Permit No. SW8 020426
Marine Federal Credit Union
High Density Stormwater Project
Onslow County
The Wilmington Regional Office received a complete Stormwater Management Permit Application
for Marine Federal Credit Union on July.8, 2002. 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 PermitNo. SW8 020426 dated July 16, 2002, for the
construction of Marine Federal Credit Union.
This permit shall be.effective from the date of issuance until July 16, 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 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.
Jf vote have any questions, or need additional information concerning this matter, please contact
Linda Lewis, or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:IWQSISTORMWATIPERMIT1020426.JUL
cc: Dave Newsom, F.E.
Onslow County Building Inspections
Linda Lewis
Wilmington Regional Office ..;.1
Central Files
NCDENR
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 2a405 [phone] Fax [phone] Customer Service
600-623-7746

State Stormwater Management Systems
Permit No. SW8 020426
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
Marine Federal Credit Union
Marine Federal Credit Union
Onslow 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.July.16, 2012, and shall be subject to
the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described
in the application and other supporting data. ;
2. This stormwater system has been approved for the management of stormwater runoff as
described on page 3 of this permit, the Project Data Sheet. The stormwater control has been
designed to handle the runoff from 188,529 square feet of impervious area.
F
3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit,
and per approved plans.
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.
2

Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
'State Stormwater Management Systems
Permit No. SW8 020426
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Marine Federal Credit Union
SW8 020426•
Application Date:
Receiving Stream/River BasinAndex #
Classification of Water Body:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, W:
Offsite Area entering Pond, ft2:
Required Surface Area, ftz:
Provided Surface Area, ft2:
Required Storage Volume, ft3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Onslow County
Mr. Craig Chamberlin, President & CEO
Marine Federal Credit Union
165 Center Street
Jacksonville, NC 28540
July 8, 2002
Half Moon Creek / White Oak / 19-6
"C NSW"
5
188,529
26,672
13,467
15,000
15,265
16,934
47.06
1.5"cp pipe
3

State Stormwater Management Systems
Permit No. SW8 020426
II. SCHEDULE OF COMPLIANCE
1. 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.
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.
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 aLCertificate 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 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.bull t-upon area or to the drainage
area.
C. 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 or a CAMA Major perrnit.was.Sought.
f. Filling in, altering, or piping of any vegetative„ convey.•ance-shown on the approved
plan.
4

State.Storinwater Management Systems
Permit No. SW8 020426
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 amount
permitted under this permit, a modification to the permit must be submitted and approved
prior to construction.
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. 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.
13. The permittee must maintain compliance with the proposed built -upon area and ensure that
the runoff from all the built -upon is directed into the permitted system.
14. The Director may notify the permittee when the perm' itted,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 thebirector fonmodifying 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..: .
1QI. GENERAL CONDITIONS , r
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. 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 t e 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 thatthe facilities fail to perform satisfactorily,;,including the creation of nuisance
conditions, the Permittee shall take immediate corred0y.eL'aclionJncluding those as may be
required by this Division, such as the construction of.additi,onal 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 apermit 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.
5

State Stormwater Management Systems
Permit No. SW8 020426
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.
Pennit issued this the 16th day of July, 2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan ',A'. Klimek, P.E., Director `
—.-I Division of Water Quality
By Authority of the Environmental Management Commission

State Stormwater Management Systems
Permit No. SW8 020426
Marine Federal Credit Union
Stormwater Permit No. SW8 020426
Onslow County
Designer's Certification
as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the project,
(Prof ect)
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.
Noteddeviations from approved plans and specification:
Signature
Registration Number
Date
t
SEAL
7

Certification Requirements:
1
3
.x
14
State Stormwater Management Systems
Permit No. SVV8 020426
The drainage area to the system contains approximately the permitted acreage.
The drainage area to the system contains no more than the permitted amount of built -
upon area.
All the built -upon area associated with the project is graded such that the runoff
drains to the system.
The outlet/bypass structure elevations are per the approved plan.
The outlet structure is located per the approved plans.
Trash rack is provided on the outletibypass structure.
All slopes are grassed with permanent vegetation.
Vegetated slopes are no steeper than 3:1.
The inlets are located per the approved plans and do not cause short-circuiting of the
system.
The permitted amounts of surface area and/or volume have been provided.
Required drawdown devices are correctly sized..per. the approved plans.
All required design depths are provided.
All required parts of the system are provided; such as a vegetated shelf, and a
forebay.
The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Onslow County Building Inspections
0 •

0
Dare Received I Fee Paid _ Permit -Number
State of North Caroliria
Department of Environment and Natural.Resources-
Division of Water Quality
STORiViWATER NL42 AGEMENTT PERMIT APPLICATION FORM
- i his form muu be photocopied for use as an orio naI
I. GENERAL IN ORNLATION
1. Aoolicans name (speci v the name of the corporation, individual, etc. who owns Lne project):
Marine Federal Credit Uninn
2. Print Owner/Siping Official's name and title (person legalh responsible for facility and compliance):
Craig ChamhPrI in Pr-ec-jtlant 1r.FQ)_-- --_-
3- Mailing Address for pe_-son listed in item ? above:
16S f'antar Straat
Citv:� Jack anv i l l _. State: NC Zir: 28540
Teienhone Number: ( 9 10Eq-5600
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and mainte--nance agreements, etc.):
Marine Federal Credit Union
5. - Location of Project (street address):
4180 Western Blvd
City: JaCksnhNfi l le _ Countv:_ Onslow
5. Directions to project (from neart s esaior intene--ton):
I nr tpon No
-zlfle—nf NCSR .14.70 annrnximatel� 7 miles No;+^thwoct Qf ,
intersection r 17
7. Latitude:34°47'55.7" Longitude: ° ' 4" oiproject
8. Contact person who can a, -saver questions about the project:
Name: Telephone Nun -be_*: ( 910 346-9Rno
II. FERN= Ll'FORNiATION:
1. Specifv whether project is (check one): XXX New Renewal Modification
Form SWiJ-101 Version 3.99 Page l of 4

existing permit number i "- and its -issue date (if -known) _
3. Specify the type of project (check one):
Low Density XX Piigh Density Redevelop General Pe.—,rit Other
4. Additional Project Requirements (check applicable blar�lcs):
_C_-'0MA Major Sedimentation/Erasion Control �404/401 Per.ut _-N1PDF-S Storrnwater
lniornation on required state permits can be obtained by contacting the Customer Service Center at
1-877 -52i-67-_*.
III. PROJECT INFOF,VLATI0N
I. in the space provided below, summarize how stormwate_ will be taeatev. Also attach a detailed narrative
(one to two pages) describing stormw-ater management for the project .
Wet Detention Basin
2. Stormwater runoff from this project drains to the White Oak River basin
Total Project Area: A 20 acres 4. Project Built upon rea:_,.64 Rn °o
5. Wow many drainage areas does the project have? 1
b. Comp iete the following inforsaation for each drainage'area. If there are more than two drainage areas in the
project, attach an additional sheet with the in.for=ation for each area provided in the same format as below.
�SaS7FrliEfoZFilat�YK.. & a yL+WYLO iS1Ca C ��1Gi1LtaG� L31`4k� S X f
Receiving Stream Name I
Halfmoon Creek
Receiving Stream Class I
$C
Drainage Area # ----
=xis: na Imnervious- Area
_ _
- -
Propose^ Imver>nous'Area
4.328 acres I
% Imve_*ylous} Area (total)
69.80
:1L�1?,r"ribiS�,7't.�"d�e+�.re3,,�._.-.,� rs«,..:k?.�:, <�,�:><. w.•a.. ��.�.... ........ .�.,�.,t<.�,-�..,..:.,�`,*i'^<
�...k,..�,..a ...... {£�-� ..���zs�.:�;
On -site Buildings i 26,345 s. f.
On -site Street
On -site P ar_kine I 135 , 840 s . f .
On -size Sidewalks -0-
Other on -site i - 0-
Of-site ,�Cr55^l� _ 26,344 s . f .
i I Tota!: - I i 188,529.s.f_._Total:_ �
I
Imne—, ,ious area is defined as the buiI: upon area including, gut not limited to, buildings, roads, parking areas,
Sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

How was -the off -site impervious area listed above derived? - -
IV. DEED RFSTMCIZONS AND PPLOTECTiVE COVENANTS
ine following itahci: ed 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.
i. 1 ne ;o1IOWing ca-uenants are intended to ensure o igaing compliance with state stor rr�ater management permit
n:nrber _ N/A as issued by the Division of Water Quality. These cove-zants may
nat be changed or deleted without the consent of the State. V
2. No more than N/A square Pert of any lot shall be covered by structures or bnpermous materials.
Impervious mate:-ials include asphalt, gra-veI, concrete, brick, stone, slate or similar but do not include wood
derking or the water, szrace of swimming pools.
3. SwaIes shaII not be filled in, pined, or altered except as necessary to provide driveulay crossings:
". Built -µvon are.^ 'n =ess of the per7itted amount requires a state stvrmwater management permit modi�zr_a. or prior to
construction.
S. Ail pe�nitted rznoT from outparces or future development shall be directed into the permitted stvrmwater control
system. These corm=: sins to the stormwar= control system shall be pe.7crmed in a marine- that maintains the
integrity and pe7ormance of the system as permitted.
By vour signature below, you cerdffy 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 clainting under diem, that they will run with the land, that the required covenants cannot be changed or
deleted without conct rrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEM"ENT F0RMI S
-The aapiicable state stormwater management permit supplement form(s) listed below must be submitted for
each B121 s-oecified for the proje- Contact the Storuzwater and General Permits Unit at (919) 73Y 5083 for the
stags and availability of these forum.
Form SW-[ -102
Wet Detention Basin Supplement
Form S'VVU-103
Infiltration Basin Supplement
..=orm SWU-104
Low Densitv Survlement
Form SW7-T-105
Curb CGu;let System Supplement
Fora 5W-U-106
Off -Site System Supplement
Form 5WU-107
Underground Inaltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Paoe 3 of 4

Vl: SUENIMAL 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 Re&ional Office. _
1. Please indicate that you have provided the following required information by initialing in the space
vrovided next to each item.
lnitals
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement l orm(s) for each B:vfP
• Permit application processing fee of SQ0 (payable to NCDENTR)
• Detailed narrative desc.-iz)bon 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 exst
- Existing cLrainage'(including off -site), dranage easements, wive sLzes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where reauired)
VIL AGEv'T ALTMORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, olease complete this section.
Designated agent (individual or fi=): john I _ Pi prrp & 85 sor i ate,,R . A
Mailing Address- P.O. Box 1685
Qtr. Jacksonville State:.-. NC Zip: 2e;4n
Phone: ( 910 ) 346-9800 - ax: ( 910 346-1210
ti-. APPLICA-N- IS CrRT C_A.TION
1, (print or nme namc of person isted in General fnformat:on, item Z) _ Craig Chamberlin President ( CFO
certi y that the information included on.ths permit application fo= is, to the best of my knowledge, co=ect and
that the project will be tors -acted in conformance with tine approved plans, that the rea iced deed resuictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC ? =1.100Q,�
Signature: Date:
lJ 2,
Craig Cha 1-in, President (CEO)
Marine Federal Credit Union
Form SWU-10I Version 3.99
Page 4 of 4

-
f ro be provided by DWQ)
• State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STOR'�IiNATER NLANAGENI ~ NT PERMIT A PLIC a ilON FORM
WET DETEN MON BASIN SUPPLEMENT
7"as fore may be pnetocopied for use as ar. onEinai
Dw Storinw�ate. kfana f:-nent Plan Review:
A complete stornwater management plan submittal includes an application form. a wet detention basin
supplement for each basin, design caiculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT LNFORtiIATION
Project Name: Marine Federal Credit Onion
ContactPeron:John L. Pierce & Associates P.A. phone Number: ( 910)346-9800
For projects with multiple basins. specify which basin this worksheet applies to: NSA
elevations
Basin Bottom Elevation
41.00
ft.
moor of the basin)
Permanent Pool Elevation
46.00
ft.
(elevation of the orifice)
Temporary Pool Elevation
47.06
ft.
(elevation of the discharge structure overj7ow)
areas
Permanent Pool Sur;ace A =
15,000
se. ft.
(water surace area at the -orifice elevation)
Drainage Area
6.20
ac.
(on -site and off -sire drainage to the basin)
Impervious Area
4,328
ac.
(on -sire and off -sire drainage to the basin)
volumes
Permanent Pool Volume
43.633
cu. r.
(combined volume of main basin and forebay)
Terupora,-7; Pool Volume
16,800
cu. fr-
(volume detained above the permanent pool)
Forebay Volume
10,100
cu. fr.
(approximately 20% of total volume)
Other paramerers
SAIDA1
4 - 986
(surface area to drainage area ratio from DWQ table)
Diameter of Orifzc�!
1 112'
in.
(2 to 3 day temporary pool draw -down required)
Design P.ainfall
1
in.
Design TSS Removal'-
90
ro
(minimum 85% required)
Farm 5WU-102 Rev 3:99 -
Page 1 of 4

1 When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious 5a and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table erlmes.
'- 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 ro TSS removal and 90% TSS removal.
H. REQUIRED ITEMS CHECKLIST
The following, checklist outlines design requirements per the Stormwater Best Management Practic�s Manual
(-N.C. Department of Environment- Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
hiibal in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an anent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applican�initials
a_
1'
b.
c.
d.
The permanent pool depth is between 3 and 6 feet (required minimum of 3 fee[).
The forebay volume is approximately equal to 20% of the basin volume.
The temporary pool controls runoff from the design storm event.
The temporary pool draws down in 2 to 5 days.
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 axeater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
r. k. .A recorded drainage easement is provided for ea,ch basin including access to dearest rigilt-
of-way.
�r 1. If the basin is used for sediment and erosion control during, construction, clean out of the
i basin is specified prior to use as a wet detention basin. v
m. A mechanism is specified watch will drain the basin for maintenance or an emergency.
III. WET DETENUON BASIN OPERATION AND M4IlV'TENA_NCE AGREEMENT
The wet detention basin system is defined as the wet detention basin. pretreatment including forebays and the
vegeta[ed filter if one is provided -
This system (check one) 0 does X 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 morithly:
a. Inspect the wet detention basin system for sediment accumulation, erosion. trash accumulation,
vegetated cover, and general conLion-
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occ'un
within 2 to 5 days as designed. _ -
2. Repair eroded areas immediately, re -seed as necessary to maintain good veaetadve cover, mow vegetative
cover to maintain a maximum height of six inches. and remove ts-ash as needed.
3. Inspect and repair the collection system (Le- 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 3.75 feet -in' the main pond, the sediment shall be removed.
When the permanent pool depth reads � - 75 feet in the forebay,. the sediment shall be removed
1 A
Sediment Removal ..42 -,Z 7
Botrom EeVaaou 41 . N ' 225%
FOREBAY
BASIN DLk GRAM
(7511 in the blanks-)
Penrsanent Pool?evatioo 46.0
Sediment Removai-leva6o❑ 42.25 � 755,
A
Bottom Elevation 41 .00 Q 25 r5
MALN POND
5. Remove cattails and other indigenous wetland plants when they cover 5050 of the basin surface. Taese
plants shall be encouraged to Grow along the vegetated shelf and forebav bean,
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' Wei detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed -above. I agree to notify DWQ of any -problems with the system or prior to any
changes to the system or responsible party. -
printname: Craig Chamberlin
Title: President, C£0
Address:- 155 Center Street, Jacksonv, 11e. NC 28540-
DhorP•
Sian.
Date
Note: The legally responsible parry should not be a homeowners association unless more rhan 50F, of the Iors Have been scid and
a resident of the subdivision has been named the pr�Side=
I, Betty Bullock _, � Notary Public for the State of N orth Carolina
County of Onslow , do hereby ce:afy that Cra'ig Chamberlin
personally apt7eared before me this day of LIc2�6'') and acknowledge the due
execution of the forgoing wet detention b :sin maintenance requirements. Witness my hand and official -zeal,
BU4to"
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o�.• 'DU8�,1G
Co l ,N
SEAL
i
My commission expires
Form SWU-102 Rev 3.99 Page 4 of 4

3817-3 Freedom Way
Hubert, N.C. 28539
Tel: [phone]
Fax: [phone]
f
tb: Ms. Georgette Scott
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405
Rm Marine Federal Credit Union
SW8 020426 Mod 1 NOV-201 1 -PC-01 32
❑ urgent
Attached:
From: Jeanie for Dave Newsom
Date: March 7, 2011
❑ For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle
One (1) original Designer's Certification for Stormwater Pond
One (1) copy Memo to Marine Federal Credit Union re Pond Maintenance Items
Comments:
Attached items are in response to the Notice of Violation (NOV-201 1-PC-01 32) dated February 24, 2011,

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State Stormwater Management Systems
Permit No_ SW8 020426 Modification
Marine Federal Credit Union
Stormwater Permit No. SW8 020426 Modification
Onslow County
Designer's Certification
I, ,4c! [> ff 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 �%%� u i L�r tJil/ (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. RECEIVE
Noted deviations from approved plans and specification:
MAR U $ 2011
t BY:
Signature
Registration Number
Date
7

ter.

State Stormwater Management Systems
.Permit No. SW8 020426 Modification
Certification Requirements:
Zy�, The drainage area to the system contains approximately the permitted acreage.
L The drainage area to the system contains no more than the permitted amount of
built -upon area.
�. All the built -upon area associated with the project is graded such that the runoff
drains to the system.
D"% 4. The outlet/bypass structure elevations are per the approved plan.
The outlet structure is located per the approved plans.
Trash rack is provided on the outlet/bypass structure's
i All slopes are grassed with permanent vegetatiorL*
Vegetated slopes are no steeper than 3:1.�
/may The inlets are located per the approved plans and do not cause short-circuiting of
the system.
/D?d—/f0- The permitted amounts of surface area and/or volume have been provided.
DkIlr", Required drawdown devices are correctly sized per the approved plans
Z&Z�2. All required design depths are provided.
2l3. All required parts of the system are provided, such as a vegetated shelf, and a*
forebay.
2�. The overall dimensions of the system, as shown on the approved plans, are
provided.
cc: NCDENR-DWQ Regional Office
Onslow County Building Inspections
14/ ->
8

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I *I
To: Marine Federal Credit Union
Role David K. Newsom, PE
CC: John L. Pierce & Associates, PA
Datm March 7, 2011
Re: Wet Detention Pond — Marine Federal Credit Union
We have conducted a site visit 1 inspection of the referenced facility in hopes of issuing
the required Engineer's Certification. Although we were indeed able to issue the required
Engineer's Certification (attached), the following maintenance related items were noted,
items that should be addressed as soon as possible to assure that pond complies with
the Operation & Maintenance provisions included in your permit
Action Items (Items that SHOULD be performed to assure continued permit compliance)
• Bare area (inadequate vegetation) exists on pond banks at the northeast corner.
These areas should be over -seeded or sodded.
• Bare area (inadequate vegetation) exists on pond banks near inlet pipe. This
area should be over -seeded or sodded.
• Depression (hole) exists near inlet pipe. This area should be filled and over -
seeded or sodded.
• Pond banks along waterline at the southwest corder of pond are sloughed and
steep, perhaps due to wave action erosion. These banks in this area should be
restored to the design vegetated shelf cross section and that area above the
normal pool over -seeded or sodded.
• Pond bank in the vicinity of outlet structure has sloughed and is now too steep
(>3:1). Slope in this area should be restored to 3:1.
• Original pond design did not include a fountain, although the existing permit
does allow fountains up to 1/8 hp is size. Please confirm that existing pond
fountain size is equal or less that that hp rating.

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General or Non -Action Items (Optional Items or Items provided for information only)
• It was noted in the inspection report by DWQ (2/17/11) that orifice assembly was
clogged. On date of our inspection (313111), orifice assembly was clear (open) &
flowing and it appeared that pond level was approaching that of the design normal
pond elevation. As required by your Operation and Maintenance Agreement, we
suggests checking the outlet structure and orifice assembly after every significant
rain event or at least monthly. ,
NCDENR DWQ recommends that all woody vegetation (i.e., trees) be removed from
the pond perimeter. The reason for this recommendation is to prevent "piping" along
tree roots, "piping" that may have the potential to cause failure of embankments.
Since this pond is not an "impoundment" structure (i.e. no dam), piping is not likely.
Considering that the existing small willow trees at the pond perimeter are a goose
and duck deterrent, you may consider retaining these trees. That said, however,
their size should be kept minimal If allowed to remain.
• Pond depths are currently acceptable; however, pond depths in the forebay, near inlet
pipe, are approaching the depth at which sediment removal is required. We
recommend checking pond depth in this area frequently, and once depth is reduced
to 4', removing accumulated sediments.
With regard to above Action Items, there are several BMP Maintenance firms in this area that
perform such work. If you would like, we can make contact with several of these firms and
obtain quotes for the recommended pond maintenance.
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