SW8041113_CURRENT PERMIT_20041203

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW�I�J
DOC TYPECURRENT
PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

�GF WA7* RQ.
Michael F. Easley, Governor
O G William G. Ross, Jr., Secretary
7� North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
December 3, 2004
Mr. Stephen E. Matthews, Member/Operating Manager
Bell Cove, LLC
9102 Coast Guard Road
Emerald Isle, NC 28594
Subject: Stormwater Permit No. SW8 041113
Bell Cove Multi -Family
High Density Project
Carteret County
Dear Mr. Matthews:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Bell Cove Multi -Family on December 3, 2004. Staff review of the plans and
specifications has determined that the profJ .ct, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 041113
dated December 3, 2004, for the construction of the subject project.
This permit shall be effective from the date of issuance until December 3, 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 Linda Lewis, or me at [phone].
Sincerely,
Rick Shiver
Regional Supervisor
Surface Water Protection Section
RSSlarl: S:1WQSISTORMWATIPERMIT1041113.dec04
cc: Ron Cullipher, P.E., Stroud Engineering
Town of Emerald Isle Building Inspections
Division of Coastal Management
Linda Lewis
cVVilMington_Reg ionaI--Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer 5erke1-877-6i23-6748
Wilmington Regional Office Wilmington, NC 28405.3845 FAX (919j 733-2496 Internet: h2o.enr.state.nc.us One
NorthCa1 olirla
An Equal OpportunitylAffirmative Action Employer— 50% Recycled110% Post Consumer Paper Naturally

State Stormwater Management Systems
Permit No. SW8 permit#
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
Stephen E. Matthews & Bell Cove, LLC
Bell Cove Multi -Family
Coast Guard Road & NC 58, Emerald Isle, Carteret County
FOR THE.
construction, operation and maintenance of two underground infiltration trenches 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 December 3, 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 in Section 1.6 on page 3 of this permit. The stormwater controls
identified as 1 and 2 on the plans have been designed to handle the runoff from
28,954 ft2 and 23,315 ft2, respectively, of impervious area. Each trench must_ be
operated with a 50' vegetated filter.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of this
permit, and per the 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 appropriate permitted stormwater control system, per the
approved plans and calculations.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 permit#
C.3
The following design criteria have been provided in the infiltration trenches and must
be maintained at design condition:
a. Drainage2Area, acres:
Onsite, ft
Offsite, ft2:
b. Total Impervious Surfaces, ft2:
C. Design Storm, inches:
d. Trench Dimensions, L x W x H, ft:
e. Perforated Pipe Diameter/Length:
f. Bottom Elevation, FMSL:
Trench 1 Trench 2
1.1 .81
47,786 35,379
0 0
28,954
1.5
80x45x3
23,315
1.5
80x36x3
36"01 5 runs @80' 36"014 runs @80'
12 12
g.
Bypass Weir Elevation, FMSL:
15 15
h.
Permitted Storage Volume, ft3:
6,016 4,813
i.
Type of Soil:
Fripp. Pactolus, & Corolla
j.
Expected Infiltration Rate, in/hr.-
5 5
k.
Seasonal High Water Table, FMSL:
10 10
I.
Time to Draw Down, hours:
3 3
M.
Receiving Stream/River Basin:
Bogue Sound 1 White Oak
n.
Stream Index Number:
WOK03 20-36-(0.5)
o.
Classification of Water Body:
"SA"
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 bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 permit#
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. 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.
6. 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.
7. 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.
8. Access to the stormwater facilities shall be maintained via appropriate easements at
all times.
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 built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit
was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, 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. 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.
Page 4 of 7

State Stormwater Management Systems
- Permit No. SW8 permit#
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event of a change of ownership, or a name change,
the permittee must submit a formal permit transfer request to the Division of Water
Quality, accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not be
approved. The permittee is responsible for compliance with all permit conditions until
such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or termination
does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 3rd day of December 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E ,sec or
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
- - - Permit- No. SW8 permit# -:
Bell Cove Multi -Family
Stormwater Permit No. SW8 041113
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
Page 6 of 7

State Stormwater Management Systems
- - - _ - - - Permit No.-SW8 permit#
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted amount
of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been provided.
12. All required design depths are provided.
13. , All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Town of Emerald Isle Building Inspections
Page 7of7

OF'FICE'USE,.ONLY�>
Date Received
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):
BELL COVE, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
STEPHEN E. MATTHEWS, MEMBER/0PC—P—AnN(z MAWA60R
3. Mailing Address for person listed in item 2 above:
9102 COAST GUARD ROAD
City. EMERALD ISLE
Telephone Number: ( .252 } 354-2872
State: NC
Zip: 28594
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
BELL COVE
5. Location of Project (street address):
CORNER OF HWY 58 AND COAST GUARD ROAD
City: EMERALD ISLE County: CARTERET
6. Directions to project (from nearest major intersection):
FROM INTERSECTION OF HWY 58 AND HWY 24, TAKE 58 SOUTH, TOWARD EMERALD ISLE, APPROX. 2.0 MILES TO THE
INTERSECTION OF HWY 58 AND COAST GUARD RD. PROPERTY IS LOCATED ON THE NORTH SIDE OF COAST GUARD RD.
7. Latitude: N34^39-39"
Longitude: W77^3'38"
8. Contact person who can answer questions about the project:
Name: STEPHEN E. MATTHEWS Telephone Number: (_252
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ✓ New Renewal
of project
354-2872
Modification
Form SMM-101 Version 3.99 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density ✓ High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major ✓ 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
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
ALL STORMWATER FROM THE IMPERVIOUS SURFACES SHALL BE TREATED BY UNDERGROUND
INFILTRATION WITH 50' VEGETATED SWALES
2. Stormwater runoff from this project drains to the
3. Total Project Area: 5.016 acres
WHITE OAK
5. How many drainage areas does the project have? 2
River basin.
4. Project Built Upon Area: 23.92 %
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.
M1 k6 f+. i^u t:
Basu1 Information
c Qi j� - 4 `F `C §?i; 1
9Y Drainage Area°1 f:'
B. 4 4 ' - - E° z
Drainage Area 2 p '
Receiving Stream Name
ROGUE SOUND
BOGUE SOUND
Receiving Stream Class
ORW
ORW
Drainage Area
47786 SF
35379 SF
Existing Impervious* Area
Proposed Impervious*Area
28954 SF
23315 SF
% Impervious* Area (total)
60.59 %
65.90 %
'�lrripeiviou"s*Surface Area I, "
nh Dra�rta e`Area1 1}`xr:, ens"
g �
Drainage,Area
On -site Buildings
9408 SF
8416 SF
On -site Streets
On -site Parking
18926 SF
14294 SF
On -site Sidewalks
Other on -site .)
620 SF
605 SF
Off -site
Total: 28954 SF
Total: 23315 SF
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? NIA
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
NIA as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
No more than NIA 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 be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater 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 4

VI. SUBMITTAL. REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
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
PAX—
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of_$420Tpayable to NCDENR)[-74py�P_es 'Fe-Qr
• Detailed narrative description of stormwater treatment/management 09C
• 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): Stroud Engineering, P.A.
Mailing Address:
151-A Hwy 24
City: Morehead City
Phone:( 252 ) 247-7479
Vill. APPLICANT'S CERTIFICATION
State: NC Zip: 28557
Fax: ( 252 247-4098
1, (print or type name of person listed in General Information, item 2) STEPHEN E. MATTHEWS, MEMBER/OpE7RgTI&
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. i
Signature:
Date: lJ//-4 el -
Form SWU-101 Version 3.99 Page 4 of 4

Permit No. `S�J Y D 1� / / 13
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
1. PROJECT INFORMATION
Project Name : SELL_ COVE
Contact Person: STEPHEN E. MATTHEWS
Phone Number: (252 ) 354-2872
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench SYSTEM NO.1 in Drainage Area 1
(from plans) (from Form SWU-101)
II. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type FRIPP, COROLLA & PACTOLUS
Infiltration Rate 5 inlhr or cf/hrlsf (circle appropriate units)
SHWT Elevation 10.0 fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume
Design Storm
Drawdown Time
Perforated Pipe Size
Perforated Pipe Length
No. Observation Wells
Stone Type (if used)
Stone Void Ratio
4779 c.f.
2.0 inch event (1.5 inch event for SA waters, I inch event for others)
0.132 days
36 inch diameter
80 ft.
NONE (may be required on a case -by -case basis)
#57
0.4
Trench Elevations (in feet mean sea level)
Bottom Elevation 12.0 fmsl
Storage/Overflow Elevation 15.0 fmsl
Form SWU-l07 Rev 3.99 Page 1 of 4

Trench Dimensions
Height
Width
0 ft.
45 ft.
III. REQUIRED ITEMS CHECKLIST
Length
Volume Provided
:z
5104
ft.
cu. ft.
The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C.
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15
A NCAC 2H .1008.
Initial in the space provided to indicate that 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. Attach justification if a requirement has not been met.
Applicants Initials
QX' C � a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
� � b
System is located at least 100 feet from water supply wells.
c. Bottom of system is at least 2 feet above the seasonal high water table.
% A- d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
F—VC— e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
fzljG f System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
C g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
L h. System is not sited on or in fill material or DWQ approval has been obtained.
i. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
G J. System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage.
k. System is located in a recorded drainage easement for the purposes of operation and
Caintenance and has recor ed access easements to the nearest public right-of-way.
� � re -tor cic�
1. System captures and infiltrates the runoff from the first 1.0 inch of rainfall,(1.5 inch event
for areas draining to SA waters }. I cc�`� 2" Y`A.i K-&L
N!�
m. Drainage area for the device is less than 5 acres.
n. A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
p. Sides of the infiltration trench are lined with geotextile fabric.
q. Rock used is free of fines (washed stone) and has a large void ratio.
Side to bottom area ratio is less than 4:1.
Form SWU-107 Rev 3.99 Page 2 of 4

lA S.
CAX-1
Observation well(s) are provided (case -by -case basis).
Vegetated filter is provided for overflow &t or SA waters, 30 feet for other waters)
and detail is shown on plans.
u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
3. Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore
depth to original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed.
4. The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month.
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
5. If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications. if the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
b. Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced to
75% of the original design depth. The system shall be restored to the original design depth without over -
excavating. Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the infiltration system. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the depth at the benchmark reads 3.25 , the accumulated sediment shall be removed
from the system.
Form SWU-107 Rev 3.99 Page 3 of 4

I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible party.
Print Name and Title: STEPHEN E. MATTHEWS, MEMBER j OQERArIN g MAmAAffi
Address: 9102 COAST GUARD ROAD EMERALD ISLE, NC 28594
Phone: 35 Y - �-s 7
Date: // -// - D` S/
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
I,p T7-�-& L "en.✓� C a Notary Public for the State of /I10/Yh1 ('.gP01/aa , County of
�ZN✓�� do hereby certify that V e �';�V personally appeared before me this 1 rh
day of Zdo `/ and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand an
��ja1 seal,
Ott �4���i��
SEAL ��GFjv''••••'�•'• �,��My commission expires '7 0�9 a�Ddtf'
..,,,COON+�`��,•
Form SWU-107 Rev 3.99 Page 4 of 4

Permit No.
(to be provided by DW)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form ntay be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : SELL COVE
Contact Person: STEPHEN E. MATTHEWS
Phone Number: 252 354-2872
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench SYSTEM NO. 2 in Drainage Area 2
(from plans) (from Form SWU-101)
II. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type
FRIPP, COROLLA & PACTOLUS
Infiltration Rate
5
h(hr or cf/hr/sf (circle appropriate units)
SHWT Elevation
10.0
fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume
3792
c.f.
Design Storm
2.0
inch event (1.5 inch event for SA waters, 1 inch eventfor others)
Drawdown Time
0.130
days
Perforated Pipe Size
36
inch diameter
Perforated Pipe Length
80
ft.
No. Observation Wells
NONE
(may be required on a case -by -case basis)
Stone Type (if used)
#57
Stone Void Ratio
0.4
Trench Elevations (infect mean sea level)
Bottom Elevation
12.0
fmsl
Storage/Overflow Elevation
15.0
fmsi
Form SWU-107 Rev 3.99 Page L of 4

Trench Dimensions
Height
Width
J ft.
36 ft
III. REQUIRED ITEMS CHECKLIST
Length
Volume Provided
a
4083
ft.
cu. ft.
The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C.
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15
A NCAC 2H .1008.
Initial in the space provided to indicate that 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. Attach justification if a requirement has not been met.
Applicants Initials
Wc-, a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
+�►�� b. System is located at least 100 feet from water supply wells.
L c. Bottom of system is at least 2 feet above the seasonal high water table.
nI\j IA- _ _ d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
rvl� e. Off --line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
�vx" — f.
System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
r�,,,
g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
,
2-t) C/ h. System is not sited on or in fill material or DWQ approval has been obtained.
P'Yoc, i. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
WC- .._ _ j. System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage.
0VX- k.
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has r orded access easements to the nearest public right-of-way.
Cho h& V'«V. k System captures an mfi trates the runoff from the first 1.0 i��}}ch of rainfall (1.5 inch event
for areas draining to SA waters ). �y eo_' > 2 It CA-i . ti
in. Drainage area for the device is less than 5 acres.
n. A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
p. Sides of the infiltration trench are lined with geotextile fabric.
q. Rock used is free of fines (washed stone) and has a large void ratio.
Side to bottom area ratio is less than 4:1.
Form SWU-107 Rev 3.99 Page 2 of 4

K , A- s. Observation well(s) are provided (case -by -case basis).
t. Vegetated filter is provided for overflow 0 feet f SA waters, 30 feet for other waters)
and detail is shown on plans.
u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore
depth to original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed.
4. The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month.
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
5. If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
6. Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced to
75% of the original design depth. The system shall be restored to the original design depth without over -
excavating. Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the infiltration system. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the depth at the benchmark reads 3.50 , the accumulated sediment shall be removed
from the system.
Form SWU-107 Rev 3.99 Page 3 of 4

I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible party.
Print Name and Title: STEPHEN E. MATTHEWS, MEMBER r pp�R A-Ti N � WtgN C, �
Address: 9102 COAST GUARD ROAD EMERALD ISLE, NC 28594
Phone: ,' - 2-Z
Signature:
Date: _&-- & G S""
Note: The legally responsible party should not be a homeowners association unless more than SO% of the lots have been sold and a
resident of the subdivision has been named the president.
I, � ZA YleZd a Notary Public for the State of -A) rT11 ��al��✓A County of
el?'gV" ✓ _, do hereby certify that 57Z:r1aEn% /t-I.g77-ye7-,zs personally appeared before me this
day of Aov,,In4ee z�®`% and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
."WkI�111fpt"
`
�Q: NQ►Tq 2 : �
SEAL '�� G�w..•••••••..•'•�•��' My commission expiress�
'a,,�COUN;,:�`�`
Form SWU407 Rev 3.99 Page 4 of 4