SW8060333_CURRENT PERMIT_20060428

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW %tj6,,o3�
DOC TYPE
` CURRENT PERMIT
C
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

W ATF9QG
Michael F. Easley, Governor
Willlam G. Ross Jr., Secretary_— _
North Carolina Department of Environment and Nvural Resources- -
April 28, 2006
Atan W. Klimek, P.E. Director
Division of Water Quality
Mr. Michael B. Davis, Manager
MBD Holdings, LLC
PO Box 3007
Wilmington, NC 28406
Subject: Stormwater Permit No. SW8 060333
Hampstead Commercial Center
- -- - - High Density- Project.-
Pender County
Dear Mr. Davis:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Hampstead Commercial Center on April 20, 2006. 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 060333
dated April 28, 2006, for the construction of the subject project.
This permit shall be effective from the date of issuance until April 28, 2016, 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 Robert Gordon, or me at [phone].
Sincerely",
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlydg: S:1WQSISTORMWATIPERMIT1060333.apr06
cc: Garry S. Pape, PE, Withers & Ravenel
Warren Holt, Pender County Building Inspections
Robert Gordon
Wilmington Regional Office
Central Files
One
No Lh Carohna
. ]atrrrallj
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Service 1-977-623-6748
Wilmington Regional Office Wilmington, NC 25405 Fax [phone] Internet: w�%,w.ncA,azerQua1i1v.arg
An Equal OpportunitylAfmtative Action Empbyer - 50% Recycledli 0% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 060333
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
Mr. Michael B. Davis & MBD Holdings, LLC
Hampstead Commercial Center
15841 Hwy 17, Hampstead - Pender 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 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 April 28, 2016, 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
control has been designed to handle the runoff from 55,330 square feet of
impervious area. This 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 approved plans. There is no built -upon area available for
future development in this permit.
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.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 060333
6. The following design criteria have been provided in the infiltration trench and
must be maintained at design condition:
a. Drainage Area, ft2: 62,622
Onsite, ft2: 62,622
Offsite, ft2: 0
b. Total Impervious Surfaces, ft2: 55,530
C. Design Storm, inches: 1.5
d. Trench Dimensions, L x W x H, ft.- 165x17.86x3.98
e. __ Perforated Pipe_Diameter/Length:_ 36"1495ft__. _____
f. Bottom Elevation, FMSL: 49.0
g. Bypass Weir Elevation, FMSL:
h. Permitted Storage Volume, ft3:
i. Type of Soil:
j. Expected Infiltration Rate, inlhr:
k. Seasonal High Water Table, FMSL
I. Time to Draw Down, days:
M. Receiving Stream/River Basin:
n. Stream Index Number:
o. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
52.98
6,826
Kureb
17.5
47.0
.10
Old Topsail Creek 1 Cape Fear
18-87-12
"SA;HQW"
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 ti mes.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 060333
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 fromthe
f - - -approved -plan-s 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 060333
III. GENERAL CONDITIONS
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 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 28t' day of April, 2006.
NOR AROLINA-ENVIRONMENTAL MANAGEMENT COMMISSION
for Al iri'W:'Klimek, P.E., Director T
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 060333
Hampstead Commercial Center
Stormwater Permit No. SW8 060333
Pender 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 060333
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 drainsare located such that tine 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
Warren Holt, Pender County Building Inspections
Page 7 of 7

OFFICE USE ONLY
Date Received Fcc Paid Permit Number
State of North Carolina
Department of Environmental and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This f n-m may be photocopied fin• use cis an origh7al
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
MBD Holdings; LLC
2. Print Owner/Signing aVs name and title (person legally responsible for facility and compliance):
Michael B. Davis, NAMManager
3. Mailing Address for person listed in Item 2 above:
PO Box 3007
City: wilillitieton State:
"Telephone Number: [phone]
Zip: 29406
4, Project Name (subdivision, facility, or establishment name should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Hampstead Commercial Ccntcr
5. lrocation of Project (street address):
15841 1-Iwy 17
City: Hampstead County: Fender
6. Directions to project (from nearest major intersection):
Approximately 1.7 miles north of the Hoover Road (SR 1569) intersection with Highway 17 north of
Hampstead. North Carolina in Fender County
7. Latitude: 34° = 50" N Longitude
8. Contact person who can answer questions about the project::
770 4 1 ' 48" W of project.
Nance: Garry S- Pape. PF rciephone Number: ( 910)256 2 77
11. PERMIT INFORMATION:
1. Specify whether project is (check one): _X New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of

I If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit null]ber and its issue date (if known)
3. Specify the type of project (clieck one):
Low Density X High Density Redevelop General Pcrmit Other
4. Additional Project Requirements (clieck applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404/401 Permit NJ -IDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
Ill. PROJECT INFORMATION
I. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing storimvater management for the project.
Stormwater will be treated by the use of an underground infiltration system
2. Slorn1water runoff fl'om this project drains to the Cape Fear River Basin.
3. 'Total Proicct Area: 2.24 acres.
4. Project Built Upon Area: 56.7 %.
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 and additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 1
Draina Te Area 2
Receiving Stream Name
Unnamed 'Trib to Old Topsail Creek
Receiving Strcani Class
SA ; HQW
Draina�e Area
62,622 sf 1.44 ac
Im pervious*Area
- 0 -
—Existing
Pro posed lin )envious* Area
55.330 sf— 1.27 ac
% IIII )envious* Area (Total)
88.9%
1111)ervious* Surface Area
Drainage Area I
Drainage Area 2
On -Site Buildings
12,000 sf
On -Site Streets
- 0 -
On -Site Parking/Pavement
4 1,73 0 sf
On -Site Sidewalks
1,600 sf
Other On -Site (future)
- 0 -
OffSite
-0-
`1'otal:
55,330 sf— 1.27 ac
*Impervious area is definoI 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

How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels, 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.
The following cot,encinls are imenclecl to ensure ongoing compliance ivilh state stormu,ester 11hillo4gentent
permit number cis issued by the Division of Water Qualify. These covenculls may llol
he clicingecl or deleted lUJthout the consent of the State.
2. No more than squctre feel of ally lot shall he covered by structures or impervious materials.
hitpervious materials lnclucle asphalt, gravel, concrete, brick, slolre, skile or similar material but not uch0c
n,00cl clocking or the hater smface of sll'llllmingy pools.
3. Swctles shall not lie filled in, piped, or altered except (IS 11ecesscArV to provi(le dr iveiiwy crossings.
4. Bull-ttpon area in excess of the permitted clmount requires a stale stor'nmwler mamagement Permit
lllocllfccrtion prior to Construction.
5. All permilled rtrnofffrom the oulparceLv orfatlrre development shall be chrecled Into the permiltecl
stoJ'r111Nate1' corlti-ol s)Istetit. Yhe'se connections to the stornmialer Control syslelrl shall he pefor fined in a
mrinner that InclilNcltrls the Irlte'grily and peifornimice 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
claimi»g 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 wit l 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.
Dorm 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
Corm SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Porin SWU-101 Version 3.99 Page 3 of

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. "1'lie complete application package should be submitted to
the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BM Few0, SW%A- %61
• Permit application processing The of $420 M'Oao +fre*
• Detailed narrative description of stormwater treatmenUmanagement
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 storrzzwater 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 you[ -
behalf, please complete this section.
Designated agent (individual or firm): Withers & Ravenel, Inc.
Mailing Address: 7040 Wrightsville Ave, Suite 101
City Wilmington State: NC
Phone: ( 910) 256-9277
VIH. APPLICANT'S CERTIFICATION
Zip: 28403
Fax: [phone]
I, (print or type name ofperson listed in Genercil Information, Itent 2) Michael B. Davis
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: jre—(7�-- Date: 3/2,+ I06
Form SWU-101 Version 3.99 Page 4 of 4

Permit No. S(fa b 2 ?�
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGLMEN"I' PLIZMI'I' APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
T his fim-in may he hholo copied 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: Hampstead Commer6al Center
Contact Person: Garry S. Papc, P.L. Phone Number: [phone]
For projects with multiple infiltration systems, a supplement form mast be completed for each system. This
worksheet applies to: Trench I in Drainage Area 1
(from plans) (from Form SWU-101)
1 1. DESIGN INFORMATION (attach supporting calculatiortsldocumentation):
Soils Report Summary (based upon an actual field im esligalion awl soil borings)
Soil Type Kureb
Infiltration Rate 17.5 in/lzr or cl7hr/sF(circle appropriate units)
SHWT Elevation 47 finsi (Seasonal High Water Table'elevation)
'french Design Parameters
Design Volume 6.614 c.f .
Design Storm 1.5 inch event (1.5-inch vent for SA waters, l inch Eor others)
Drawdown Time 0.10 days
Perforated Pipe Size 36" inch diameter
Perforated Pipe Length 495 11,
No. Observation Wells NIA (may be required on a case -by -case basis)
Stone Type (if used) #57 Waslied Stone
Stone Void Ratio 40 %
Trench Elevations (itt feel mean sea leiel)
Bottom Elevation 49.00 find
Storage/Overflow Elevation 52.98 fms]
FormS W U-107 R6v3.99 Page I of 4

Trench Dimensions
I-leight 3.98 ft.
Width 17.8611.
lll. REQUIRED ITEMS CHECKLIST
Length 165 ft
Volume Provided 6.826 CU. ft.
The following checklist outlines design requirements per t11e Storinwater Best Management Practices manual
(N.C. Department of Istivironnlent. Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 2Ff. 1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. 1 f the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if requirement has not been n1et.
Applicants Initials
45lia. System is located 50 feet from class SA waters and 30 feet from other surface waters.
MIA b. System is located at least 100 feet from %eater supply wells.
c. Bottom of system is at least 2 feet above the seasonal high water table.
d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. Off -lisle system, runoff in excess of the design volume bypasses the system (bypass detail provided)
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).
g. Soils have a 1111111111L1111 hydraUliC conductivity of 0.52 inches per hour.
ms h. System is not sited on or in fill material or DWQ approval has been obtained.
i. flans 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.
System is sized to take into account the runoffat the ultimate built -out potential from all surfaces
pdraining to the system; including any off -site drainage.
k. System is located in a recorded drainage casement for the purposes of operation and maintenance
and has recorded access easements to the nearest public right-of-way.
�ST I. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event for areas
draining to SA waters).
r11. Drainage area for the device is less than 5 acres.
n. A pretreatment device (f-liter strip, grassed swalc, sediment trap, etc.) is provided.
o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
ForinSWU-107 R60.99 Page 2 of'4

ARp. Sides ofthe infiltration trench are lined with geotcxtile labric.
tom'_'_ q. Rock used is free of fines (washed stone) and has a large void ratio.
K]ai r. Side to bottom area ratio is less than 4: 1.
s. Observation Nvell(s) are provided (case -by -case basis).
t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters) and detail
Pis
shown oil plans.
�u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
I . After every runoff producing rainfall event and at least monthly inspect the bypassloverllow structure for
blockage and deterioration and the inf-iltration system f-or erosion, trash accumulation; grass covet-, and
general condition.
Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maxmtum height of six inches, and remove trash and blockages as needed
to maintain system performance.
Remove accumulated sediment mutually 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 -tic system for a period of three
months) shall be reported to DWQ immediately.
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 21-1.1000 must be designed, approved and constructed.
G. Remove accumulated sediment from the infiltration system annually or when depth in the trait is reduced
to 75% of the original design depth. The system shall be restored to tic original design depth without
over -excavating. Over -excavating may cause the required water table separation to be reduced and may
compromise tie ability ofthe 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 duality (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 sllall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
Each drop inlet structure has a sump that sits one foot below the infiltration system. When the
depth of the structures reaches 090 feet the accumulated sediment shall be removed from the
system.
FormSWU- l 07 R60.99 Page 3 of 4

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 ofany problems
with the system or prior to any changes to the system or responsible party.
Print Name and Title: Michael B. Davis. Member Manager
Address: PO Box 3007, Wilmington, NC 28406
Phonc: 910-620-9446 Date:
Si,mattlre:
16,1Uc
Note: The legal!}, i-esl)onsible rarity should not be ai homeoivnet-s association miless mo)-e than .50% of the lots
have bee){ SO d a iicl a i4esldent Of tI1G' .SIIbCINISIOIT 11Qti bL'e11 )TC1111L'd lI1G p1'eS1IlG'11I.
I, 4"— -.a. Notary Public for the State of a ounty of
do hereby certlly that ����� �-/�� personally appeared
/ yyyy
before me this � day of Q�7 and acknowledge the due execution of the forgoing infiltration
basin maintenance requirements. Witness my hand and official seal.
w• TOMIKA Y. STORMS
�Q official Seat
I Notary Public - North Carolina
New Hanover County
`-- M Comm. Expires Feb.1, 2010
SLEA I� My Commission expire
Forms W U-107 R60.99 Page 4 o f' 4