SW8100214_CURRENT PERMIT_20210530

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 \p0'L\4
DOC TYPE
TV CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
202k 6G 30
YYYYMMDD

/"�
ROY COOPER
Governor
DIONNE DELLI-GAT71
Secretary
BRIAN WRENN
Director
May 30, 2021
NORTH CAROLINA
Environmental Quality
Marine Corps Base Camp Lejeune
Attn: Neal Paul, Deputy Public Works Officer
1005 Michael Road
Camp Lejeune, NC 28547
Subject: Permit Renewal
State Stormwater Management Permit No. SW8 100214
Tarawa Terrace Child Development Center
Onslow County
Dear Mr. Paul:
Effective August 1, 2013 the State Stormwater program has been transferred from the Division of Water Quality
(DWQ) to the Division of Energy, Mineral and Land Resources (DEMLR). All previous references to DWQ will
remain in older stormwater permits issued prior to August 1, 2013 until they are modified. Please note that this permit
will now reference DEMLR as the Division responsible for issuance of the permit.
The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for
the subject project on May 17, 2021. The Division is hereby notifying you that permit SW8 100214 has been renewed
on May 30, 2021, and shall be effective until December 28, 2029. For your records, please find enclosed a renewed,
updated, and re -issued permit and a copy of the renewal application. Please keep this permit on file at all times. Please
note that the renewed, updated, and re -issued permit does not impose new or different terms; it merely restates some of
the previous terms to provide you with a better understanding of your obligations under the permit.
The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the
terms and conditions of this state stormwater permit. The plans originally approved on May 7, 2010 will remain in full
force and effect in accordance with the regulations set forth in Title 15A NCAC 2H.1000.
This permit is subject to the conditions and limitations as specified therein. Please pay special attention to the
conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed
restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit. Failure to establish
an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions,
to transfer the permit, or to renew the permit, 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 by filing a written petition with the Office of Administrative Hearings (OAH). The written
petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within
thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a
filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or
via telephone at 919-431-3000, or visit their website at www.NCOAH.com. Unless such demands are made this permit
shall be final and binding.
If you have any questions, need additional copies of the permit or approved plans, please contact Ashley Smith in the
Wilmington Regional Office, at [phone] or [e-mail].
Sincerely,
Ck1.��r%� p
1c..C.Y
�' Brian Wrenn, Director
Division of Energy, Mineral and Land Resources
o D. rm �Z� North Carolina Department of Environmental Qua1Ry I Division of Energy, MIne21 and Land Resources
Wilmington Regional Office 1127 Cardiml Drive Extension I Wilmington,North Carolina 2a4O5
910.796.7215

'i '.
State Stormwater Permit No. SW8 100214
Page 2 of 2
Enclosures: Attachment A — Designer's Certification Form
Attachment C — Permitting History
Renewal Application Documents
DES/ams: \\\Stormwater\Permits & Projects\2010\100214 HD\2021 05 permit 100214
cc: NCDEQ-DEMLR Wilmington Regional Office
IfIft North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Wilmington Regional Office 1 127 Cardinal Drive Extension I Wilmington, North Carolina 28405
rvoam w�ouru
w�w�o.n 910.796.7215

State Stormwater Management Systems
Permit No. SW8 100214
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY COMMERCIAL 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
USMCB Camp Lejeune
Tarawa Terrace Child Development Center P 1096B
Building TT113, Iwo Jima Blvd., Camp Lejeune, Onslow County
FOR THE
construction, operation and maintenance of two (2) wet detention pond(s) in compliance with the
provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter collectively referred to
as the "stormwater rules') the approved stormwater management plans and specifications and
other supporting data as attached and on file with and approved by the Division of Energy,
Mineral and Land Resources (the "Division" or "DEMLR") and considered an enforceable part of
this permit.
This permit shall be effective from the date of issuance until December 28, 2029, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
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 1.7 of this permit. The stormwater controls designated as Pond #1
and Pond #2 have been designed to handle the runoff from 35,516 and 67,222 square
feet of impervious area, respectively.
3. A 50' wide vegetative buffer must be provided adjacent surface waters, measured
perpendicular to and horizontally from the normal pool of impounded structures, the top
of bank of streams and rivers and the mean high water line of tidal waters.
4. The tract will be limited to the amount of built -upon area indicated in Sections 1.2 and 1.7
of this permit, and per approved plans. The built -upon area for future on -site
development is zero for both ponds. Pond #2 provides for 4,497 square feet of offsite
built -upon area.
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.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 100214
6. The runoff from all built -upon area within the permitted drainage area(s) of this project
must be directed into the permitted stormwater control system.
The following design criteria have been provided in the wet detention ponds and must be
maintained at design condition:
a. Drainage Area, acres:
Onsite, ftZ:
Offsite, ft2
b. Total Impervious Surfaces, ftZ:
Onsite, ftZ:
Offsite, ftZ
C. Design Storm, inches:
d. Average Pond Design Depth, feet:
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSL:
g. Permanent Pool Surface Area, ftZ:
h. Permitted Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL:
j. Pre-dev. 1 yr-24 hr. discharge rate, cfs:
k. Controlling Orifice, in:
I. Orifice flowrate, cfs:
M. Permanent Pool Volume, ft3:
M. Permitted Forebay Volume, ft3:
n. Fountain Horsepower
o. Receiving Stream/River Basin:
p. Stream Index Number:
q. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
Pond #1
Pond #2
1.51
3.16
66,053
127,315
-0-
10,496
35,516
67,222
35,516
62,725
None
4,497
1.5
1.5
3.0
3.0
90%
90%
23.0
22.5
4,475
7,717
5,649
15,178
24.0
23.5
0.08
0.05
1.25
1.5
0.02
0.03
8,919
15,178
1,885
3,070
N/A
N/A
Northeast Creek / White Oak
19-16-(3.5)
SC;HOW;NSW
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 time provide the operation and maintenance necessary to
assure the permitted stormwater system functions at the design condition. 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 re -vegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow spreader,
catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to
authorized personnel of the Division. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 100214
Decorative spray fountains will not be allowed in the stormwater treatment system for
Ponds 1 and 2, as the permanent pool volume is less than 30,000 cubic feet.
The facilities shall be constructed, operated and maintained in accordance with the
provisions of this permit, the approved plans and specifications, and the supporting
documents attached to this permit and on file with the Division.
Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has
been installed in accordance with this permit, the approved plans and specifications, and
other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification. A modification may be required for
those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be restored to
design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility.
9. Access to the stormwater facilities for inspection and maintenance shall be maintained
via appropriate recorded easements at all times.
10. No person or entity, including the permittee, shall alter any component shown in the
approved plans and specifications. Prior to the construction of any modification to the
approved plans, the permittee shall submit to the Director, and shall have received
approval for modified plans, specifications, and calculations including, but not limited to,
those listed below. For changes to the project or SCM that impact the certifications, a
new or updated certification(s), as applicable, will be required and a copy must be
submitted to the appropriate DEQ regional office upon completion of the modification.
a. Any modification to the approved plans and specifications, regardless of size
including the SCM(s), BUA, details, etc.
b. Redesign or addition to the approved amount of BUA or to the drainage area.
G. Further development, subdivision, acquisition, lease or sale of any, all or part of
the project and/or property area as reported in the approved plans and
specifications.
d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any
component of the approved SCM(s), the stormwater collection system and/or
vegetative conveyance shown on the approved plan.
e. The construction of any allocated future BUA.
f. The construction of any permeable pavement, #57 stone area, public trails, or
landscaping material to be considered a permeable surface that were not included
in the approved plans and specifications.
g. Other modifications as determined by the Director.
11. 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.
12. Prior to transfer of the permit, a file review and site inspection will be conducted by
Division personnel to ensure the permit conditions have been met and that the project
and the on -site stormwater system complies with the permit conditions. Any items not in
compliance must be repaired, replaced restored, or resolved prior to the transfer.
Records of maintenance activities performed to date may be requested.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 100214
III. GENERAL CONDITIONS
Any individual or entity found to be in noncompliance with the provisions of a stormwater
management permit or the requirements of the stormwater rules is subject to
enforcement procedures as set forth in NCGS 143 Article 21.
The issuance of this permit does not preclude the permittee from complying with and
obtaining any other permits or approvals that are required for this development to take
place, as required by any statutes, rules, regulations, or ordinances, which may be
imposed by any other Local, State or Federal government agency having jurisdiction.
Any activities undertaken at this site that cause a water quality violation or undertaken
prior to receipt of the necessary permits or approvals to do so are considered violations
of NCGS 143-215.1, and subject to enforcement procedures pursuant to NCGS 143-
215.6.
3. If the facilities fail to perform satisfactorily, the permittee shall take immediate corrective
actions. This includes actions required by this Division and the stormwater rules such as
the construction of additional or replacement on -site stormwater systems. These
additional or replacement measures shall receive a permit from the Division prior to
construction.
Permit Transfer: This permit is not transferable to any person or entity except after
notice to and approval by the Director. The permittee shall submit a completed and
signed 'Permit Transfer Application Form" (available on the Division website)
accompanied by the required fee and supporting documentation as listed on the form, to
the Division at least 60 days prior to any one or more of the following events:
a. The sale or conveyance of the project area in whole or in part, except in the case
of an individual lot sale that is made subject to the recorded deed restrictions and
protective covenants;
b. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-14-
05 or NCGS 57D-6-07 and 08;
C. Bankruptcy,
d. Foreclosure, subject to the requirements of Session Law 2013-121,
5. Current Permittee Name or Address Changes: The permittee shall submit a completed
"Permit Information Update Application Form" (available on the Division website) to the
Division within 30 days to making any one or more of the following changes:
a. A name change of the current permittee;
b. A name change of the project;
C. A mailing address change of the permittee;
6. The permittee is responsible for compliance with all terms and conditions of this permit
until the Division approves the transfer request. Neither the sale of the project, in whole
or in part, nor the conveyance of common area to a third party constitutes an approved
transfer of the permit.
7. The permittee grants Division Staff permission to enter the property during normal
business hours to inspect all components of the permitted project.
8. The permit issued shall continue in force and effect until the permittee files a request
with the Division for a permit modification, transfer, renewal, or rescission; however,
these actions do not stay any permit conditions.
9. Approved plans, application documents, supplements, calculations, operation and
maintenance agreement, and specifications for this project are incorporated by reference
and are enforceable parts of the permit. A copy of this permit, application, supplements,
operation and maintenance agreement, and approved plans and specifications shall be
maintained on file by the permittee.
10. Unless specified elsewhere, permanent seeding requirements for the on -site stormwater
system must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 100214
11. The issuance of this permit does not prohibit the Director from reopening and modifying
the permit, revoking and reissuing the permit, or terminating the permit for cause as
allowed by the laws, rules, and regulations contained in Title 15A NCAC 2H.1000 and
NCGS 143-215.1 et.al.
12. A permit renewal request must be submitted at least 180 days prior to the expiration
date of this permit. The renewal request must include the appropriate application,
documentation and the processing fee as outlined in Title 15A NCAC 02H.1045(3).
Permit renewed, updated and reissued this the 30 day of May 2021.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
.� Brian Uirector
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Page 6 of 8

State Stormwater Management Systems
Permit No. SW8 100214
Tarawa Terrace Child Development Center P 1096B
Stormwater Permit No. SW8 100214
Onslow County
Attachment A
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 specifications:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SW8 100214
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 outlet structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet 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. Required drawdown devices are correctly sized and located per the approved
plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
15. The required system dimensions are provided per the approved plans.
16. All components of the stormwater BMP are located in either recorded
common areas, or recorded easements.
cc: NCDEQ-DEMLR Wilmington Regional Office
Page 8 of 8

Attachment C - Permitting History
Tarawa Terrace Child Development Center
Permit No. SW8 100214
Approval
Date
Permit
Action
BIMS
Version
Description of the Changes
5/7/2010
Original
Approval
1.0
5/30/2021
Renewal
2.0

TtarV Prt�f� ��r Permit Number: S (,i) : S 1 0021
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one): . .. , . - -
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
7�1
Form SW401-Wet Detention Basin O&M-Rev.4
APR 1 8 2010
13V,
Page 1 of 4

Permit Number: S (Aj 9) 1 00Z1 `t
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
'4'.
original design depth for
possible. Remove the'sediineni and,
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion 2roblems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
CUdVZD
APR 1 ® 2010
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4
RV

j.
I.— {.n ' .
Permit Number: .5 0E) I D02.1 'T
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. (if applicable)
The outlet device
Clogging has occurred. ' "
'Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 1.50 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
17.50
---------------
FOREBAY
BASIN DIAGRAM
ill in the blanks)
I ft Min.
Sediment
Storage
Form SW401-Wet Detention Basin O&M-Rev.4
Permanent Pool Elevation 22.50
Sediment Removal Elevation 2100 Volum,
----------------------- ------
Bottom Elevation
MAIN POND
T-M CEIVED
APR 1 Ei 2010
BY:
Page 3 of 4
I-f[ n.
Sediment
Storage

Permit Number: 5w 8 1 ap2
(to be provided by DWQ
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project nante:MCB-Camp Lejeune - Child Care Development Center - Tarawa Terrace
BMP drainage area number:#2 (Parking Site)
Print name:Carl Baker
Title:Deputy Public Works Officer
Address:Bldg. 1005 Michael Road, MCB Camp Lejeune, NC 28547- ;::_:. t n no-'V.-- --
Date: 3 — / 9 :,-/()
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, A/" ���1�i�- , a Notary Public for the State of
AdA61_a11;u , County of do hereby certify that
11�Z146- personally appeared before me this
day of //�ell /D and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
ALICE A 80NNETTE
Notary Public
Onslow County
State of North Carolina
My Commission Expires Oct 23, 2010
SEAL
My commission expires
C "V
APR 1 9 2010
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4
BY:

E
otuwlal0u EXOµat pw S9' 5010
21010 o1 Nollu Carolluo
ou"Iom ConwA
Nalo(A bnGl1C
V(ICF. Y SOA4f&l1E

lip N
Tyres i �r ��� C�,` `� �� Permit Number: S W 8 ) V O 21
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
locafion and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
APR 1 0 2010
BY:-�
Page I of 4

Permit Number:;? W CJ 1 t)OZ I -A
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW40I-Wet Detention Basin O&M-Rev.4 APR 1 9 2010 Page 2 of 4
1Y:

Permit Number: S W 103 k002-1 L\
(to.be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. (if applicable)
-The outlet device
Clogging has occurred.
'Clean ouitthe outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 55:5 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 2.5 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom Ele
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 23.0
17_50 1 Pe manes Pool
------- Volume Sediment Removal Elevation 20.50 Volume
16_50 -ft Min.
----------------------------------------- ------
Sediment Bottom Elevation 19.50 1-ft r
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4
APR 19 2010
BY:
Page 3 of 4

Permit Number: 5 ( J 8 k 002_ `'
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project nome:MCB-Camp Lejeune - Child Development Center - Tarawa Terrace
BMP drainage area number:#1 (Building Site)
Print
Title:Deputy Public Works Officer
Address:Bld¢. 1005 Michael Road, MCB Camp Lejeune, NC 28547—
Date: - / 9' —/0
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, A, �fi/J� , a Notary Public for the State of
Jl Q�' a County of 01,�I/l/ , do hereby certify that
IL / ?eye" personally appeared before me this lffli�4
day of �i �/J and acknowledge the due execution of the
forgoing wet detention basin maintenance req�u�irieme�nts. Witness my hand and official
seal,
MICE A SONNETTE
Notary Publlc
Onslow County
State of North C6tollna
My Commission Expires Oct 23. 2010
SEAL
My commission expires�Q%/-o6/0
Form SW401-Wet Detention Basin O&M-Rev.4 APR Page 4 of 4
BY;

WA WA Lowwlzx!ou cr.buex O:! Si' SU)0
2I010 0114011P COtoquo
Oi2lo : Conul.
6i010tA unpile
Vrict V 90OVE11E

DEMLH UbE ONLY
Date R ceiv' d
Fee Paid
Permit Number
5I al
J?8, a5
Sw8 ool
t-1GCtr-0n,L- r ,+
NC-DEO Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60.(c). This application form is for permit renewals only.
A. PROJECT INFORMATION
1. State Stormwater Permit Number: SW8 100214
2. Project name: Tarawa Terrace Child Development Center P 1096B High Density Commercial Wet
Detention Pond Proiect
3. Project street address: XXX
City: MCB Camp Leieune County: Onslow
ZIP: 28542
4. What, if any, changes have been made to the project as permitted?
If the project has changed from the original approved plans, please complete SWU-101 for a Major
Modification or Minor Modification Application form available at: https:Hdeg.nc.gov/about/divisions/energy-
m i ne ral-land-resources/energy-mineral-land-rules/stormwater-prog ram/post-const ruction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https://deg.nc.gov/about/divisions/energy-mineral-land-
resources/energy-mineral-land-rules/stormwater-program/post-construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: MCB Camp Leieune
2. Signing Official's Name: Neal Paul
3. Signing Official's Title: Deputy Public Works Division
4. Mailing Address: MCB Camp Lejeune 1005 Michael Rd.
City: MCB Camp Leieune State: NC
ZIP: 28547-2521
5. Street Address:
City: State: ZIP
6. Phone: [phone] Email: [e-mail]
_IC9-Rf r
MAY 17 2021
Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018

C. SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORW). Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to indicate that the required information is provided in the application package:
HEB 1. A permit application processing fee of $505.00 payable to NCDEQ.
HEB 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
HEB 3. One hard copy and one electronic copy of recorded documents required by the original permit that have
not yet been received by DEMLR, including: deed restrictions, protective covenants,
condominium/planned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
HEB 4. O&M Agreements, Please select one:
® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
HEB 5. Designer Certifications, Please select one:
® A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC):
Provide one hard copy and one electronic copy of documentation from the NC Secretary of State,
or other official documentation, which supports the titles and positions held by the persons listed in
Section C.2 per 15A NCAC 2H. 1043(3)(b).
https://www.sosnc.gov/online services/search/bv title/ Business Registration
R MAY 17 2021n{..
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERMITTEE'S CERTIFICATION I
I, Dait • L,,41 - , the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit he proper forms to modify or transfer the permit prior to any changes to the
project, SCMs or ownership. II i ormation provided on this permit renewal application is, to the best of my
knowledge or etFndompl te.
Signature: Date:
NOTARIZATION: Ir'�
I, C_ n6 I V"50(1 a Notary Public for the State of
NOVAC4"bW)CL County of n5,10 h/ , do hereby certify
that nt ]Y L .W ci � ✓ personally appeared before me
this the i day of M ,C"i , 20 21 and acknowledge the due
execution of the forgoing instrument. Witness my hand and official seal,
``%%1r111JjJJ
(Notary Seal) . \V ERs
,
_ GV; NOTARY
Notary Signature: 0
LAG
a�i 202"i 't.
My commission expires �, •. Pue
•'�;�
0 ___CO
XT�.
n
MAY f I ?02,
BY\
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

m

Permit No.
(ro De provitletl by DWQ) 471
0A0� W A TF9
'^'A
NCDENR
o�<
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required
Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I:FPROJECT INFORMATION :+,:::-, .?;y.`-„w kyE-`:?y"K'#k:ef.•+>ai?; "�i ¢?:."F�n'�'E+[:..�+, �7sht4x'?'�*'�:
Project name Tarawa Terrace Child Development Center
Contact person Phil Gambrel
Phone number
Date
Drainage area number
502-5854181
2/10/2010
Parking Site (2)
II74DESIGNINFORMATION.;'i*<,. ., 41 s°r2i9$'�: .,-'.4�?�"+�.?::"�t?;rx'r.+'t.:°:.'DA: � 4
Site Characteristics
Drainage area
137,811 f?
Impervious area, post -development
67,222 f?
% impervious
48.78 %
Design rainfall depth
1.5 in
Storage Volume: Non -SA Waters
Minimum volume required
8,424 ft'
Volume provided 9,345 ft1
Storage Volume: SA Waters
1.5" runoff volume ft'
Pre -development 1-yr, 24-hr runoff fta
Post -development 1-yr, 24-hr runoff ft1
Minimum volume required ft1
Volume provided to
Peak Flow Calculations
OK
OK, volume provided is equal to or in excess of volume requin
Is the pre/post control of the tyr 24hr storm peak flow require Y
(Y or N)
1-yr, 24-hr rainfall depth
3.6 in
Rational C, pre -development
0.10 (unitless)
Rational C, post -development
0.53 (unitless)
Rainfall intensity: 1-yr, 24-hr storm
0.15 in/hr OK
Pre -development 1-yr, 24-hr peak flow
ft3/sec
Post -development 1-yr, 24-hr peak flow
0.25 ft'/sec
Pre/Post 1-yr, 24-hr peak flow control
0.25 ft'/sec
Elevations
Temporary pool elevation
23.50 fmsl
Permanent pool elevation
22.50 fmsl
SHWT elevation (approx. at the perm. pool elevation)
22.22 fmsl
Top of 10ft vegetated shelf elevation
23.00 fmsl
Bottom of 10ft vegetated shelf elevation
22.00 fmsl
Sediment deanout, top elevation (bottom of pond)
17.50 fmsl
Sediment cleanout, bottom elevation
16.50 fmsl
Sediment storage provided
1.00 It
Is there additional volume stored above the state -required n
(Y or N)
temp. pool?
Elevation of the top of the additional volume
fmsl
Form SW401-Wet Detention Basin-Rev.e-9/1➢109
ARR I J 2010
lid":�h�rres5- Ph
31/010
Parts I. it II. Design Summary, Page 1 of 2

t1
Permit No.
be be provided by Dw0)
II.'DESIGN INFORMATION..'.r `. . Xx ,2 t+'yt•:r�t� J.-
Surface Areas
Area, temporary pool
10,450 ft2
Area REQUIRED, permanent pool
7,717 ft2
SA/DA ratio
5.60 limitless)
Area PROVIDED, permanent pool, Ammo,
7,706 fe
Area, bottom of 1 Oft vegetated shelf, �t ,cell
5,944 fly
Area, sediment cleanout, top elevation (bottom of pond), A.
956 fit'
Volumes
Volume, temporary pool
9,345 ft3
Volume, permanent pool, V..,
15,178 ft3
Volume, forebay (sum of forebays if more than one forebay)
3,070 ft3
Forebay % of permanent pool volume
20.2% %
SAIDA Table Data
Design TSS removal
90 %
Coastal SA/DA Table Used?
y (Y or N)
Mountain/Piedmont SA/DA Table Used?
n (Y or N)
SA/DA ratio
5.60 (unitless)
Average depth (used in SA/DA table):
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Vae„ya,
15,178 fta
Area provided, permanent pool, A...,
7,706 ft2
Average depth calculated
It
Average depth used in SAIDA, do,, (Round to nearest 0.511)
It
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, A,,
7,706 ft
Area, bottom of 1 Oft vegetated shelf, P6ot ,halt
5,944 fit'
Area, sediment cleanout, top elevation (bottom of
956 ft2
pond), Aoo�aonc
"Depth" (distance b/w bottom of 10ft shelf and top of se,
4.50 fit
Average depth calculated
3.05 ft
Average depth used in SAIDA, do,,, (Round to nearest 0
3.0 ft
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of orifice (if circular)
1.50 in
Area of orifice (if -non -circular)
in
Coefficient of discharge (CD)
0.59 unitless
Driving head (He)
0.33 ft
Drawdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C„.)
(unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
0.05 fta/sec
Post -development 1-yr, 24-hr peak flow
0.25 li
Storage volume discharge rate (through discharge orifice or
0.03 ft3/sec
weir)
Storage volume drawdown time
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Form SW401-Wet Detention Basin -Rev 8-911 ➢109
3.24 days
3 :1
10 :1
10.0 ft
2 :1
1.5 :1
N (Y or N)
1.0 It
N (Y or N)
N (Y or N)
N (Y or N)
None
Insufficient permanent pool surface area
OK
Ton
Need 3 It min.
OK
OK
OK, draws down in 2-5 days.
OK
OK
OK
Insufficient flow path to width ratio. Must not short-circuit pond
OK
Trash rack or similar device recommended.
OK
OK
Insufficient. Recorded drainage easement required.
Required to capture all runoff from the ultimate build -out
Pens 1. & 11. Design Summary, Page 2 of 2
p.Pq ,1 2010

Permit No_ /5kf 1"�21
be be provided by DwDI
® � Opp W ATf jy
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name Tarawa Terrace Child Development Center
Contact person
Phone number
Date
Drainage area number
Phil Gambrell
502-585-4181
Building Site (1)
II. DESIGN INFORMATION
Site Characteristics
Drainage area 66,053 ft3
Impervious area, post -development 34,516 fe
% impervious 52.26 %
Design rainfall depth 1.5 in
Storage Volume: Non -SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the pre/post control of the tyr 24hr storm peak flow requin
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of 1 Oft vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediment deanout, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state -required
temp. pool?
Elevation of the top of the additional volume
Form SW401-Wet Detention Basin-Rev.8-9117109
4,296 ft3
5,649 ft3
ft3
ft3
ft3
ft3
ff3
OK
OK, volume provided is equal to or in excess of volume requin
Y (Y or N)
3.6 in
0.37 (unitless)
0.56 (unitless)
0.15 in/hr OK
ft3/sec
0.13 ft3/sec
0.13 ft3/sec
24.00 fmsl
23.00 fmsl
23.16 fmsl
23.50 fmsl
22.50 fmsl
17.50 fmsl
16.50 fmsl
1.00 ft
N (Y or N)
fmsl
..nninlr.-
Perte lI 811. Desl9(t
APR 1 8 2016
BY: Gxlptrss

•.4 , . e
Permit
(to be provided by DWw
II. DESIGN INFORMATION
Surface Areas
Area, temporary pool
6,447 fe
Area REQUIRED, permanent pool
4,293 fe
SAIDA ratio
6.50 (unitless)
Area PROVIDED, permanent pool, At..,
4,475 fe OK
Area, bottom of 10ft vegetated shelf, km shcu
3,260 fe
Area, sediment cleanout, top elevation (bottom of pond), k
300 ft'
Volumes
Volume, temporary pool
5,649 ft3 OK
Volume, permanent pool, V...,
8,919 ft3
Volume, forebay (sum of forebays if more than one forebay)
1,885 ft3
Forebay %of permanent pool volume
21.1% % OK
SAIDA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used? y (Y or N)
Mountain/Piedmont SAIDA Table Used?
in (Y or N)
SAIDA ratio
6.50 (unitless)
Average depth (used in SAIDA table)
Calculation option 1 used? (See Figure 10-2b)
in (Y or N)
Volume, permanent pool, V eney l
8,919 ft3
Area provided, permanent pool, A,,m,i
4,475 fe
Average depth calculated
ft
Average depth used in SAIDA, cle , (Round to nearest 0.5ft)
If
Calculation option 2 used? (See Figure 10-2b)
y (Y or N)
Area provided, permanent pool, A,..,
4,475 ft°
Area, bottom of 1 Oft vegetated shelf, !�� , �
3,260 ftz
Area, sediment cleanout, top elevation (bottom of
300 ftz
pond), At.,
"Depth" (distance b/w bottom of 10ft shelf and top of se,
5.00 ft
Average depth calculated
3.16 ft
Average depth used in SAIDA, da,,, (Round to nearest 0
3.0 ft
Drawdown Calculations
Drawdown through orifice?
y (Y or N)
Diameter of orifice (if circular)
1.25 in
Area of orifice (if -non -circular)
in
Coefficient of discharge (CD)
0.59 (unitless
Driving head (He)
0.33 ft
Drawdown through weir?
in (Y or N)
Weir type
(unitless)
Coefficient of discharge (C„,)
(unitless)
Length of weir (L)
It
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
0.08 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.13 ft3/sec
Storage volume discharge rate (through discharge orifice or
0.02 ft3/sec
weir)
Storage volume drawdown time
2.82 days
Additional Information
Vegetated side slopes
3 :1
Vegetated shelf slope
10 :1
Vegetated shelf width
10.0 ft
Length of flowpath to width ratio
2 :1
Length to width ratio
1.5 :1
Trash rack for overflow & orifice?
n (Y or N)
Freeboard provided
1.1 ft
Vegetated filter provided?
in (Y or N)
Recorded drainage easement provided?
n (Y or N)
Capures all runoff at ultimate build -out? -
n (Y or N)
Drain mechanism for maintenance or emergencies is:
n/a
Form SW401-Wet Detention Basin-Rev-9117109
Need 3 ft min.
OK
OK
OK, draws down in 2-5 days.
OK
OK
OK
Insufficient flow path to width ratio. Must not short-circuit pond
OK
Trash rack or similar device recommended.
OK
OK
Insufficient. Recorded drainage easement required.
Required to capture all runoff from the ultimate build -out
Parts I. 811. Design Summary, Page 2 of Z
_APR
1 � ZDIO