SW8011125_CURRENT PERMIT_20020528

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW50��I�1S
DOC TYPE
�PCURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

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Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
d Division of Water Quality
Wilmington Regior%l Office
May 28, 2002
Mr. Fred Bunn, President
FMB, Inc.
2207 West Nash Street
Wilson, NC 27893
Subject: Permit No. SW8 011125
Pine Knoll Shores Condominiums
High Density Stormwater Project
Carteret County
Dear Mr. Bunn:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Pine Knoll
Shores Condominiums on April 1, 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 Permit No. SW8 011125 dated May 28, 2002, for the construction of Pine Knoll Shores Condominiums.
This permit shall.be effective from the date of issuance until May 28, 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 forloperation 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] 50B of the North Carolina General.Statutes,,and -filed
with -the Office -of Administrative Hearings, -P.O.-Drawer.27447,"Raleigh, NC 27611-7447. 'Uhless such demands
are made this perm t shall'be final and -binding.
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis,.or_me
at (910).395 3900.
Sincerely,
Rick .Shiver
Water Quality Regional Supervisor
RSS/arl: S:1WQSISTORMWATIPERMIT1011125.MAY
cc: Ron:Cullipher, P.E.
Town of Pine Knoll Shores Building Inspections
.Division of Coastal Management
Linda Lewis
Wilmington.Regional Office
Central -Files•
N.C. Division of Water Quality 127 Cardinal Drive. Extension Wilmington, N.C. 28405 [phone] 'Fax [phone] Customer Service
800-623-7748

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State Stormwater Management Systems
Permit No. SW8 011125
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
FMB, Inc.
Pine Knoll Shores Condominiums
Carteret County
FOR THE
construction, operation and maintenance of an underground'infiltration trench in compliance with the provisions
of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management -
,._..
plans andapecifacations and -other supporting data as -attached and on file with•and approved'by the Divisiodbf
Water -Quality ;and -considered.a,part of this permit.
This permit shall be;effective,from fhe.date of issuance until May 28, 2012,.and shall .be subject to -the following
specifted,conditions and limitations:
�1. ?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 -fonthe management of..stormwater.runoffas describe&onIpage
.3 of thistpermit,lhe,Project-Data-Sheet. The -stormwater contr61,`hasybeen;designedto'handle-the.runoff "
from11,728 square feet of impervious area.
;3. Approved plans and specifications for this project,-by.reference-and;are enforceable parts. W
of the permit.
4. A total .of 20,752 • ft2 of built -upon .area is ,.proposcd, With 145728 _ft2 .(parking lot) .being ,treated -by ..the
infiltration. system. The tract will be.limited to.20,752 square feetas1ndicated on the application, and per
the approved plans.
.5. All stormwater collection and treatment systems must be located in either dedicated common areas .or
recorded easements. The final plats for -the project will be recorded showing all such required easements,
in accordance with the -approved plans.
•6. The runoff -from .the proposed 11,728' ft2 of parking lot .must :be directed ,into the permitted stormwater
.control system. Any additions to this built -upon area must be approvedprior to construction.

State Stormwater Management Systems
Permit No. SW8 011125
Project Name.
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream/indek #:
,
Classification of Water Body:
Trench Dimension, L x W x H, feet:
Pipe Size/Length:
Trench Bottom Elevation, FMSL:
Drainage Area:
Total Impervious -Surfaces, ft2:
Offsite Area entering, ft2:
Required Storage Volume, ft':
Provided.Storage Volume, ft3:
Temporary Storage Elevation, FMS
Controlling Orifice:
`Type of Soil:
'Expected Infiltration Rate:
Seasonal High Water Table Elevati
o
f ,
3

State Stormwater Management Systems
Permit No. SW8 011125
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
ofDWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system.
6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless
the,facilities are constructed 'in accordance with the.conditions of this permit, ,the, approved .plans -and
specifications, and other supporting data.
7. Upon completion of construction,.prior to issuance of a Certificate of Occupancy,. and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
.certifying that the.permitted facility 'has �been installed in accordance with this permit, the.approved,plans
and specifications,:and.other.supporting documentation. Any deviations from.the approved plans and
:specifications must:be noted on the Certification. A modification may be required.for.those deviations.
8. Ifthe 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 theDirector 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. A.ny.•revi6on.to any -item shown on'the approved plans;-'including.the stormwater-management
measures, built -upon area,.details, etc.
1. Traject narrie change.
C. Transfenof ownership.
d. Redesign or.addition to the approved amount of built -upon area or to the drainage area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval 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. If the proposed BUA- exceeds the amount permitted under this permit,
a modification to the permit must.be submitted and approved prior to construction.
Cl

State Stormwater Management Systems
Permit No. SW8 011125
11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction.'
12. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days.
• � f
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13. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ and provide -the
name, mailing address and phone number of the purchaser or leasee. An access/maintenance easement to
.the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will
be restricted by the sale or lease of any portion of the property.
14. The permittee 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.
15. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a
written time schedule to the Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director that the changes have been
made.
III. GENERAL CONDITIONS
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'invoived, 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 the conditions and limitations contained in this permit may subject .the -Permittee to
. enforcement action -by the Division of Water :Quality, 'in accordance with North'Carolina General'Statute
143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any.and all statutes, rules,
,regulations,�or ordinances ,which may be imposed by other government agencies (local,,state, and federal)
which', have jurisdiction.
4. In the;event.that.the facilities fail to perform satisfactorily, including the.creation of nuisance conditions, the
Yermittee 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.
L .
:5. 'The •pernnittee grants DENR Staff,permission.to enter:the property during :normal;business`hours:for the
,purpose _of inspecting all =components -of the.permitted ' stormwater managementTkility.
m6. 'The permit -may:be.modifred;'revoked. and reissued or terminated for -cause. The fling of a request fora
-permit modification,,revocati6n and reissuance or terrni nation, not'stay-any-permit condition..
.,!Permit issued this -the 28tli day of'May, 2002.
NORTI-I•CAROLINA-ENVIRONMENTAL MANAGEMENT COMMISSION
Gregory.J. Thorpe, Ph.D., Acting Director
'Division of Water -Quality
By Authofity of the Environmental Management Commission
5

State Stormwater Management Systems
Permit No. SW8 011125
Pine Knoll Shores Condominiums
Stormwater Permit No. SW8 011125
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,
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:
SEAL
Signature
Registration Number
Date
{

State Stormwater Management Systems
Permit No. SW8 011125
Certification Requirements:
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1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
10. The permitted amounts of surface area and/or volume have been provided.
IL . Required drawdown devices are correctlysized per the approved plans.
12. All required design depths are provided.
<< .13. All -required parts of the.system are provided, such as a vegetated shelf, and a forebay.
14. The overall dimensions of the system, as shown on the approved plans, are -provided.
cc: NCDENR-DWQ Regional Office
s Town -of Pine KnoIl.Shores, Carteret County Building'Inspections
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;, ,OFFIGs USE ONLY
Efate Received
Pee Paid
Permit Number
-30-0{
0 4-1-vZ
�F42000:l01701
SW? OOZS
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 (lie corporation, individual, etc. who owns the project):
2. Print. Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in iterti 2 above:
eZ b� W t�sT ►��5,+ S�zt—
City: W��s.a_r�1 state:__NG zip: 2g593
Telephone NU III IXe': (_ 91 q } . 291 - 9���
�1. Project. Narne (subclivisiorr, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project, (street address):
1 d 1 Sale
G. Directions to project (from nearest majnr intersection):
U ►.i � C h1 � � � �,�vJ Pc-! 5� r� � S �/�,vvx• od ' sr �ca��rs • Pl�a� Cc'� o.J 1.�r'T :S
7, I..atktucle:�--3�'A 8= Longitude: q (o -•5'7 of project
8. Contact person who can answer questions ahout the project:
Name: _f_iiC,b al�t.Qt`1 Telephone Number: ( t11q J9 / - WO
Ii. PERMIT INFORMATION:
1. Specify wlretlter project is (cltecic one): _)<__New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of 4

2. If this application is being submitted a the result of a renewal or modification to an existing permit, list the
existing permit number N1 and its issue date (if known)
3. Specify the type of project (check one):
Low Density P—High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_X-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.
��C�O.�_-.�NC��,Ct�# T.lE � c�a c/ D F %•+1 t' /�n�v c. c. SI�a 2 �5 - - --
_0 �yAu
2, Stormwater runoff from this project drains to the Wkri< 0,4I4 River basin.
3. Total Project Area:�$_acres
5. How many drainage areas does the project have?
4. Project Built Upon Area: %
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 inf rmation for each area provided in the same format as below.
O\JMRLL LOW Zslo s n-y
E. THE -rimer - Agove, NNW �Rt-NC4�
Basin Information
Drainage Areal
Drainage Area 2 ,
Receiving Stream Name
7jp U� Sou
13o u Sort.
Receiving Stream Class
$A
SA
Drainage Area
C
g AL
i` i :1 $T
Existing Impervious* Area
Proposed Impervious *Area
J0 S .0 SP
coo, 7Q.SS SF
1
• 62 Sr
% Impervious* Area (total)
.89
07S 9q%
0000
Impervious* Surface Area
Drainage Area 1
„Drainage Area.2f
On -site Buildings
F
On -site Streets/Pav
F
�
On -site Parking
On -site Sidewalks
Other on -site V1 Ct:.Cy
0 •a° SF
Off -site
Total: 20, 5-
otal:
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?_ f ,7,7 5",/"
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each.lot number, size and the allowable built-upon.area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface ofswimming 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 q4 _

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.
• 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
1
Lz, fob
i��o r1
- 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.(individual03'firm): STRbl;l1) Y-. AaN1 Npps-N �.
Mailing Addres_s:,
City:— 17� �c C'lut State: VA Zip:_ dSST')
Phone: (6 29 ) �y%- %�%'�9 _ Fax:
V1II. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) rEO �Nx)
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 rouirements of 15A
NCAC 21-1 .1000.
Signature:_,__ �/1� 7� &W^ �Date: 11119 01
Form SWU-Ml Version 3.99 Page 4 of 4

Permit No. SW 901 11 ZS
(to be provided by DWO
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
DWQStormwater 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 : TS ORES �ngo�t►+11UtF-\�
Contact Person: Frtlr p Z%p.JtJ _ _ Phone Number: (cPSa) d 9l - 9000
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench
(li'oatt plans)
in Drainage Area
(from Form SWU-101)
11. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil horings)
Soil Type n
Infiltration Rate I Z tn/hr r cf/hr/sf (circle appropriate units)
SHWT Elevation fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume 146to._2 c.f.
Design Storm I inch e�,"wv_ent��(1.5 inch event for SA waters, 1 inch event for others)
Drawdown Tirne �, 4-�r�
Perforated Pipe Size 16 inch diameter
Perforated Pipe Length Z7 ft.
No. Observation Wells (may be required on a case -by -case basis)
Stone Type (if used) Nd. iO
Stone Void Ratio Iq
Trench Elevations (infect mean sea level)
Bottom Elevation fmsl
Storage/Overflow Elevation p1 l 13•0 fmsl
o1 2 /S2l0
Form SWU-l07 Rev 3.99 Page l of 4

Trench Dimensions
Height S 0 ft, Length
Width SD ft. Volume Provided
III. REQUIRED ITEMS CHECKLIST
(ae 13d Fr�
cu.ft.
The following checklist outlines design requirements per the Storinwater Best Management Practices manual (N.C.
Departinew of Environment, Fiealth and Natural Resources, November 1995) and Administrative Code Section: 15
A NCAC 21-I .1008.
Initial in the space provided to indicate that the following design requircincrlts have been met and supporting
documentation is attached. If the applicant has designated an agent in the Storillwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been mct.
Applicants Initials
a. System is located 50 feet from class SA waters and 30 feet from other surface. waters.
b, System is locatcd at least 100 feet from water supply wells.
c. Bottom of system is at [cast 2 feet above the scason-al high water table.
L — d. Bottom of ttic system is 3 feet above any bedrock or impervious soil horizon.
(Q � e. Off-line Systcnl, runoff in cxccss of the design volume llypasscs the system (bypass detail
provided).
f. System is designed to draw down the design storage volume to the proposed bottom
cicvatloll Under seasonal high water conditolls wlthlll five d iys haled upon inl,iltrat.ion
through the bottom only (a hydrogcologic evaluation inay be rc(ILrired).
ep—
g. Soils have a minimum hydraulic conductivity ol'O.52 inches per. hour.
h. System is not tilted oil or ill fill material or DWQ approval has been obtained.
Plans ensure that the installed system will meet design specifications (coltstrllcted or
restored) upon initial operation once tic project is complete dart the entire drainage area is
stabilized.
62-0 - •j. System is sized to take into accoutlt the runoff at the ultimate, built -out potential from all
sul'fIce's clrairling to the system, including any off -site drainage.
k. System is loc.ited in a recorded drainage easement for file purposes of operation ant[
maintenance and has recorded access casements to the nearest pllbllc right -Of -Way.
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 ). .
m. Drainage arca for the device is less than 5 acres.
11. A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
o. Trench bottom is covered With it layer of clean sand to an average depth of 4 inches.
Sides of the infiltration trench are lined with bcotemile fabric.
cl. Rock Lised 15 free of fines (washed stolnc) and has a large void ratio.
r. Sidc to bottom area ratio is less than 4:1.
form S W U-107 Rev 3.99 Page 2 of 4

s. Observation well(s) are provided (case -by -case basis).
t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters)
dd AI 1 1
an etas �s s town on p ans.
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.
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.
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.
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.
I d .S isis L.
t
When the depth at the benchmark reads O.-SPIrLthe accumulated sediment shall be removed
from the system.
Fonn SWU-107 Rev 3.99 Page 3 of 4

acknowledge and agree by my signature below that 1 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: r rt -% n
Address: -2QA0 j Wf.Sr NJ0,-,, SrQCVT+ \VjII.SOi.i lx. a?789.3
Phone: n/ - 9e�oo Date: Ma4ecH G , ZOO?
Signature:_ 3"'-a 2V /I" —
Note: The Iegaldv responsible party should not be a homeownefs association unless nzo+•e than 50% of the lots have been sold and a
resident of 'the subdivision has been named the president.
1,MATrAk 1 L. M0,74nt/C_ a Notary Public for the State ofAoArli CA.QQLinfa►, County of
I ZAIIt w do hereby certify that AMA " 3yni nl _ personally appeared before me this �� .
day of Al Z40 Z , and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
%%S1111111/1041
P.
��; NOTq�•;2�r
- • : m SEA -
•.AVBL�G
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My commission expires 00.. q9, ee"O—y
y
Farm SWU-107 Rev 3.99 Page 4 of 4