SW8040405_CURRENT PERMIT_20041208

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

OF V k rFR Michael F. Easley, Governor
,O� Q�bua7G William G. Ross, Jr., Secretary
CIO
North Carolina Department of Environment and Natural Resources
Alan W, Klimek, P.E. Director
Division of Water Quality
December 8, 2004
Commander Andrew P. Kimos
United States Coast Guard
1240 E. Ninth Street
Cleveland, OH 44199-2060
Subject: Stormwater Permit No. SW8 040405
Fort Macon ANT Building
High Density Project
Carteret County
Dear Commander Kimos:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Fort Macon ANT Building on .November 23, 2004. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 040405
dated December 8, 2004, for the construction of the subject project.
This permit shall be effective from the date of issuance until December 8, 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:1WQSISTORMWATIPERMIT1040405.dec04
cc: Tim Reid, P.E., Moffatt & Nichol
Katrina Marshall, Carteret County Building inspections
Division of Coastal Management
Linda Lewis
CW ilmington_Regional-Office1D
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer 5ervice14377-623-6748 One
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Intemet: h2o.enr.state.nc.us NarthCarol ina
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper Natura!!Y

State Stormwater Management Systems
Permit No. SW8 040405
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
Andrew P. Kimos, United States Coast Guard
Fort Macon ANT Building
Carteret County
FOR THE
construction, operation and maintenance of an infiltration area with a separate storage
facility, 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 8, 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
control has been designed to handle the runoff from 92,701 square feet of
impervious area.
3. All overflows from the basin must pass through a minimum 50' long vegetated
filter.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
5. 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 040405
6. Runoff is directed into a lined storage area where it is pumped into a series of
interconnected 2" slotted piping located under the sand volleyball courts. The
following design criteria have been provided in the infiltration area and storage
facility and must be maintained at design condition:
a.
Drainage Area, 9cres:
5.12
Onsite, ft :
223,027
Offsite, ft2:
0
b.
Total Impervious Surfaces, ft2:
92,701
C.
Design Storm, inches:
1.5"
d.
Storage Basin Depth, feet:
1.0
e.
Storage Basin Bottom Elevation, FMSL:
3.0
f.
Storage Basin Bottom Surface Area, ftz:
16,373
g.
Bypass Weir Elevation, FMSL:
4
h.
Permitted Storage Volume, ft3:
17,299
i.
Infiltration Area at volleyball court, ft2:
1,950
j.
Loading rate from pump:
175 gpm
k. Type of Soil. -
I. Expected Infiltration Rate, inlhr:
M. Seasonal High Water Table, FMSL:
n. Time to Draw Down, hours:
o. Receiving Stream/River Basin:
P. Stream index Number:
q. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
Fine to Medium Sand
20
4.7
9.6
Bogue Sound I White Oak
WOK03 20-36-(8.5)
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. 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.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 040405
4. 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, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
5. 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.
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. 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 for inspection and maintenance shall be
provided 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.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 040405
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.
lll. 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 8th day of December 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alalimek, Pam., Director
`-- Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 040405
Fort Macon ANT Building
Stormwater Permit No. SW8 040405
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 040405
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 weir elevation is per the approved plan.
6. The bypass structure is located per the approved plans.
7. A -Trash Rack is provided on the 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.
M. NCDENR-DWQ Regional Office
Katrina Marshall, Carteret County Building Inspections
Page 7of7

' ''7�'i a �� c�t x;i•;br hr�'Xe: `�� r. .. ,., C tS, _. � aOFFIC'i�lr' USEjOl�ll:iY L
Date Received
Fee Paid
Permit Number
uy-oa- b
!�a 1-1 iuo
� b'ko%-A
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):
United States Coast Guard
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
ConTnanding Officer, United States Coast Guard I' W , Limo
3. Mailing Address for person listed in item 2 above:
1240 East Ninth Street
City: Cleveland State: OH Zip: 44199-2060
Telephone Number: 216 902-6217
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
United States Coast Guard =-Group Fort Macon —
5. Location of Project (street address):
1305 East Fort Macon Road
City: Atlantic Beach
County: Carteret
6. Directions to project (from nearest major intersection):
From intersection of NC 58 (Fort Macon Road) and Morehead Avenue in Atlantic
Beach, travel east on NC 58 approximately 2 miles -- Facility located on left
7. Latitude: 34' 42' Longitude: 760
41 ' of project
8. Contact person who can answer questions about the project:
Name: Tim Reid Telephone Number: ( 919 ) 781--4626
Ii. PERMIT INFORMATION:
1. Specify whether project is (check one): x New Renewal Modification
Form SWU-101 Version 3.99 . Page I 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 `XRedevelop
4. Additional Project Requirements (check applicable blanks):
General Permit Other
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.
Currently, there are no'Stormwater Treatment Facilities onsite. As part of a
redevelopment project, Stormwater Treatment will.be provided for ar�i, ate y
5 acres of the'facility, using a.coitlbination'.Storage Pond/Infiltration Basin
System. White Oak
2. Stormwater runoff from this project drains to the River basin.
3. Total Project Area: 5.12 acres 4. Project Built Upon Area; 48% Existing %
42% Proposed
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
—,Basin �, r=1 r Lr
ix��•r��l;
'�- n� � �r�Drainage Areal �„.��' � �-�
� � a � -� �j�yj � ,�• r .
Receiving Stream Name
Boque Sound
Receiving Stream Class
SA
Drainage Area
223 027 SF . 5.12 A
Existing Impervious* Area
106, 286 SF (2.44 AC)
Proposed Impervious*Area
92,701. SF(2.14 AC).
% Impervious* Area (total)
48% Exist/42% Proposed
F`viGf inrr rnnr1i+-inns
T ��zprviausSurfaee,Area y`_
;'branageArea 4 .' rpf�;}Drainage.4r
ea ,i,�S /�j ati '�
x� to
On -site Buildings
19. 276
On -site Streets
28,500 SF (0.65 AC)
28,200 SF 60.65 AC
On -site Parking
49 �268 SF
On -site Sidewalks
8,528 SF (0.20 AC)
8,528 SF ' (0.20 AC
Other on -site
714 SF 0 02
714. SF'0 2
Off -site
N/A
N/A
Total: 1.06 286 SF 2.44 AC
Total: 92,701 SF (2,14 A
" Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc. '
** Note: Calculations based upon worst cast (misting conditions) — proposed
conditions will reduce impervious areas.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? Entire_ facility Surrounded
by Fort Macon State Park.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. 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.
1. 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 dM
• One copy of the applicable Supplement Form(s) for each BMP im
• Permit application processing fee of $420 (payable to NCDENR) 4 _
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including: ,3N1
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): 'Tim Reid
Mailing Address: 1616 East mil brook Road, Suite i hB
City: State: NC Zip, 27609
Phone: ( 919 1 781-4626 Fax: ( 919 1781-4869
VIII. APPLICANT'S CERTIFICATION
1. (print or type name of person listed in General Information, item 0) Alv'b .Ew ?' K)'11 05
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. -_%
Signatu
Date: y/0 {
Form SWU-101 Version 3.99 Page 4 of

Permit No. Sw 2TU ¢U 405
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may 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
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : United States Coast Guard - Group Fort Macon
Contact Person: Tim Reid Phone Number: ( 919) 781-4626
This worksheet applies to: Basin No. 1 in Drainage Area 1
(as identified on plans) (from Form SWU-101)
H. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable source
of soils information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type Fine to Medium Sand
Infiltration Rate 194 U in or cflhrlsf (circle appropriate units)
SHWT Elevation 4.7 fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm
1.5
inch (1,5 inch event for SA waters, I inch event for others)
Design Volume
13,440
c.f.
Drawdown Time
0.40
days
Basin Dimensions
(�*1�� 1i"'zfl'c3� lVolleyboft GAd-)
Basin Size
30
ft. x 55 ft. = 1950 sq. ft. (bottom dimensions)
Basin Volume Provided
3900
_
c.f. ' toraryt �=x; fVc4utne,
Basin Elevations
Bottom Elevation
6.7
fmsl
Storage Elevation
7.7
fmsl
Top Elevation
7.7
fmsl
Form SWU-103 Rev 3.99
Page 1 of 3

III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate 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
JM a.
N
■
1
OF
11TV
T
Q
System is located 50 feet from class SA waters and 30 feet from other surface waters.
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.
d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained.
f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
g. Drainage area for the device is less than 5 acres.
h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
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 ). Design volume and infiltration calculations attached.
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. Calculations attached.
JM k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
JM 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
JM m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided.
JM n. Vegetated falter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters).
JM o. Flow distribution mechanism within the basin is provided.
JM p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
JM q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
JM r. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
JM s. 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.
Form SWU-103 Rev 3.99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
2. - Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment 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 pretreatment unit. 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 design depth reads 1.2 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
The infiltration basin sediments within the leach pipes shall be removed using the cleanouts provided.
5. If the Division determines that the system is failing, the system will immediately be repaired 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.
I acknowledge and agree by my signature below that I am responsible for the performance of the five
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: ArJD PJ�7" ?• K I Mn5
Address: G l V i !_ ErJG1n1 EEIzeN(,r Vn117-, IZ40
Phone: 5' 4 2 — G
Signature:
CDa-, VSGC91 , C:0YW HAT4WA)4 OFF1G��2
IlAlrkl .5 c�Vec'"b, ON, 40g9
Date: 3 /?2.I a V-
Note: The legally responsible parry 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.
1, dtrYAJ vM U, l a Notary Public for the State of _ _ Q/�� o County of
A- do hereby certify that 4wD�i� P 1S 1 0 5 personally appeared before me this _� d
day,oQ1t.L' ,r�0 , and acknowledge the due execution of thn rgoing infiltration b sin m intenance requirements.
Witness my hand and official seal, GAftl�tYiQ S I iLCG�'��
Notary Public, State o 0 Ohio
My Commission Expires September 19,J00f
SEAL My commission expires Recorded in Ashland County
Form SWU-103 Rev 3.99 Page 3 of 3