HomeMy WebLinkAboutSW8110906_CURRENT PERMIT_20200827STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 1 U`--\ U�o
DOC TYPE
$ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 0 20 0 8 Z"l
YYYYMMDD
ROY COOPER
Governor
MICHAEL S. REGAN
secretary
BRIAN WRENN
Director
August 2r, 2020
NORTH CAROLINA
Environmental Quality
MCB Camp Lejeune
Attn: Commanding Officer
c/o Neal Paul, Deputy Public Works Officer
1005 Michael Road
Camp Lejeune, NC 28547
Subject: Permit Renewal
State Stormwater Management Permit No. SW8 110906
2D Anglico and 2N BN OPS Complexes
Overall Low Density Project with Areas of Higher Density
Onslow County
Dear Mr. Paul:
The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for
the subject project on June 2", 2020. The Division is hereby notifying you that permit SW8 110906 has been renewed
on August 27th, 2020, and shall be effective until April 30, 2028. 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 and
clarifies 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 April 30", 2012 and most
recently modified on February 23id, 2017, 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 150E 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 Kellie Beth Norris in
the Wilmington Regional Office, at (910) 796-7215 or kellie.norris@ncdenr.gov.
Sincerely,
1
Brian Wrermt Director
Division of Energy, Mineral and Land Resources
Enclosures: Attachment A — Designer's Certification
Attachment C — Permitting History
Renewal Application Documents
DES/kbn:\\\Stormwater\Permits & Projects\2011\I 10906 LD\2020 08 permit 110906
cc: Wilmington Regional Office Stormwater File
North Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resources
Wilmington Regional Office 1 127 Cardinal Dnve Extension I Wilmington North Carolina 28405
910,796.7215
a vunanw
State Stormwater Management Systems
Permit No. SW8 110906
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
OVERALL LOW DENSITY DEVELOPMENT WITH AREAS OF HIGHER DENSITY
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
2D Anglico and 2N OPS Complexes
Off Holcomb Boulevard, Camp Lejeune, Onslow County
FOR THE
construction, operation and maintenance of an overall 24% low density project with areas of higher
density being treated by four (4) wet detention ponds, one (1) infiltration basin, and one (1) sand filter
in compliance with the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter
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 April 30, 2028, 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. The overall density within the 160.65-acre project area must be maintained at 24% per the
requirements of the stormwater rules. This project area is limited to a maximum of 1,676,974
square feet of impervious area. This project currently proposes a total of 1,535,400 ft2 of built -
upon area and 141,574 ft2 of future impervious area. Within the project area, 192,750 ft2 of
impervious area is not being picked up or treated. The runoff from the remainder of the
project's built -upon area must be collected and treated in one of the stormwater control
measures covered by this permit.
3. The stormwater system has been approved for the management of stormwater runoff as
described in Section 1.10, 1.11, and 1.12 of this permit. The runoff from all built -upon area within
the permitted drainage areas of this project must be directed into the appropriate permitted
stormwater control measures. The stormwater controls labeled Pond A, Pond B, Pond C,
Pond D, Infiltration Basin, and Sand Filter, have been designed to handle the runoff from
627,687 ft2, 252,148 ft2, 133,601 ft2, 394,958 ft2, 29,621 ft2, and 174,240 ft2 of built -upon area,
respectively.
4. The tract and drainage areas will be limited to the amounts of built -upon area indicated in this
permit, and per approved plans. The built -upon area for the future development within the
drainage areas of Pond A, Pond B, Pond C and Pond D is limited to 3,649 ft2, 10,000 ft2,
10,000 ft2 and 10,000 ft2, respectively.
Page 1 of 12
State Stormwater Management Systems
Permit No. SW8 110906
5. Within the areas of low density, the only runoff conveyances systems allowed with be
vegetated conveyance such as swales with minimum side slows of 3:1 (H:V) as defined in the
stormwater rules and approved by the Division.
6. Within the areas of low density, no piping shall be allowed except those minimum amounts
necessary to direct runoff beneath an impervious surface such as road or under driveways to
provide access.
The infiltration system is permitted per the Alternative Design Criteria under Section .1008 (h).
The proposed system provides equal or better control, equal or better protection of surface
waters and results in no increased potential for nuisance conditions. The infiltration system
can store at least 2.5 times the minimum design storm, therefore neither an LS/VFS nor an
offline bypass are required.
8. The project shall provide and maintain a minimum 50-foot wide vegetative buffer adjacent all
surface waters, measured horizontally from and perpendicular to the normal pool of
impounded structures, the top of bank of each side of streams and rivers and the mean high
water line of tidal waters. All runoff directed into and through the vegetative buffer must flow
through the buffer in a diffuse manner. Any roof drains from the low density areas must
terminate at the outer edge of the buffer.
9. Stormwater runoff that is directed to flow through any wetlands shall flow into and through
these wetlands at a non -erosive velocity.
10. The following design criteria have been provided in the four wet detention ponds and must be
maintained at design condition:
Pond A
Pond B
Pond C
Pond D
a. Drainage Area, acres:
Onsite, ft2:
Offsite, ftz:
23.4
1,019,304
0
11.42
497,272
0
5.25
228,797
0
18.52
806,844
0
b. Total Impervious Surfaces, ftz:
Onsite, ft2:
Offsite, ftz:
627,687
627,687
0
252,148
252,148
0
133,601
133,601
0
394,958
394,958
0
c. Average Pond Design Depth, feet:
4.0
3.5
3.5
3.5
d. TSS Removal Efficiency:
90%
90%
90 .
90%
e. Design Storm, inches:
1.5
1.5
1.5
1.5
f. Permanent Pool PP Elevation, FMSL:
13.0
1 12.0
12.0
10.0
g. Permitted PP Surface Area, ftz:
57,953
29,496
22,626
48,499
h. Permitted Storage Volume, ft3:
76,991
35,871
19,797
54,145
i. Temporary Storage Elevation, FMSL:
14.2
13.1
12.8
11.0
j. Predevelopment 1 yr-24 hr. discharge
rate, cfs:
0.89
0.45
0.21
0.73
k. Controlling Orifice, inch 0 e:
4.00
2.75
2.50
3.50
I. Orifice Flow Rate, cfs:
0.26
0.12
0.09
0.18
m. PP Volume, ft3:
219,464
93,377
70,586
145,008
n. Forebay Volume, ft3:
42,721
18,946
14,325
31,154
o. Maximum Fountain Horsepower:
3/4
1/3
1/4
1/2
p. Receiving Stream/River Basin:
Wallace Creek / White Oak WOK02
Stream Index Number:
19-20
r. Classification of Water Body
SB, NSW
Page 2 of 12
State Stormwater Management Systems
Permit No. SW8 110906
11, The following design criteria have been provided in the infiltration basin and must be
maintained at design condition:
a.
Drainage Area, acres:
Onsite, ft2:
Offsite, ft2:
1.66
72,310
0
b.
Total Impervious Surfaces, ft2:
Onsite, ft2:
Offsite, ft2
29,621
29,621
0
c.
Design Storm, inches:
1.5
d.
Basin Depth, feet
3.0
e.
Bottom Elevation, FMSL:
24.5
f.
Bottom Surface Area, ft2:
2,248
g.
Bypass Weir Elevation, FMSL:
26.6
h.
Permitted Storage Volume, ft3:
9,460
i.
Predevelopment 1 yr-24 hr. discharge
rate, cfs:
0.07
j.
Type of Soil:
Ba meade
k.
Expected Infiltration Rate, in/hr:
1.295
I.
Seasonal High Water Table, FMSL:
22.5
m.
Time to Draw Down, hours:
1.7
n.
Receiving Stream/River Basin:
Wallace Creek / White Oak WOK02
o.
Stream Index Number:
19-20
Classification of Water Body:
SIB, NSW
12. The following design criteria have been provided in the sand filter and must be maintained at
design condition:
a.
Drainage Area, acres:
Onsite, ft2:
Offsite, ft2:
5.25
228,690
0
b.
Total Impervious Surfaces, ft2:
Onsite, ft2:
Offsite, ft2:
174,240
174.240
0
c.
Design Storm, inches:
1.5
d.
Sediment Chamber Bottom Elev. fmsl:
16.0
e.
Sediment Chamber Depth, feet:
2.0
f.
Sediment Chamber Surface Area, ft2:
4,117.8
Weir Elevation, fmsl:
18.0
h.
Sand Chamber Bottom Elev., fmsl:
16.0
i.
Sand Chamber Depth, ft:
2.0
j.
Sand Media Depth, ft:
1.5
k.
Sand Chamber Surface Area, ft2:
4,117.8
I.
Maximum Head, feet:
2.6
m.
Top of Ponding Elevation, fmsl:
20.6
n.
Permitted Storage Volume, ft3:
27,301
o.
Predevelopment 1 yr-24 hr. discharge
rate, cfs:
0.36
p.
Orifice Diameter, inches:
6
q.
Orifice Flowrate, cfs:
0.14
r.
Time to Draw Down, hours:
25
s.
Seasonal High Water Table, fmsl:
11.33
t.
Receiving Stream/River Basin.
Wallace Creek / White Oak WOK02
u.
Stream Index Number:
19-20
v.
Classification of Water Body:
SIB, NSW
Page 3 of 12
State Stormwater Management Systems
Permit No. SW8 110906
II. SCHEDULE OF COMPLIANCE
The permittee is responsible for verifying that the proposed built -upon area for the entire
project does not exceed the maximum allowed by this permit.
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.
3. During construction, erosion shall be kept to a minimum and any eroded areas of the system
will be repaired immediately. 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.
4. The permittee shall at all times provide the operation and maintenance necessary to assure
that all components of the permitted stormwater system function at design condition. The
approved Operation and Maintenance Agreement is incorporated by reference into this permit
and must be followed in its entirety and maintenance must occur at the scheduled intervals.
5. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DEMLR. The records will indicate the date, activity, name of person
performing the work and what actions were taken.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to
operation of this permitted facility, a certification must be received from an appropriate
designer for the system installed certifying that the permitted facility has been installed in
accordance with this permit, the approved plans and specifications, and other supporting
documentation. Any deviations from the approved plans and specifications must be noted on
the Certification. A modification may be required for those deviations.
Decorative spray fountains are allowed in the pond, subject to the following criteria:
a. The minimum permanent pool volume is 30,000 cubic feet.
b. The fountain must draw its water from less than 2' below the permanent pool surface.
C. Separated units, where the nozzle, pump and intake are connected by tubing, may be
used only if they draw water from the surface in the deepest part of the pond.
d. The fountain may not be placed into the forebay.
e. The falling water from the fountain must be centered in the main pond, away from the
shoreline.
f. The maximum horsepower for a fountain in this pond is as listed in Section 1.10 (o) of
this permit.
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.
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. Access to the stormwater
facilities for inspection and maintenance shall be maintained via appropriate recorded
easements at all times.
Page 4 of 12
State Stormwater Management Systems
Permit No. SW8 110906
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.
c. 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, the stormwater facilities will be inspected by Division personnel.
The project and the stormwater facility must be in substantial compliance with all permit
conditions. Any items not in substantial compliance must be repaired, replaced or restored to
design condition prior to the transfer. Records of maintenance activities performed to date will
be required.
13. The Base is required to keep track of the approved project limits to assure that the approved
low density project area is not double -counted as project area in another low density project
located on MCB Camp Lejeune.
III. GENERAL CONDITIONS
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;
2. 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;
Page 5 of 12
State Stormwater Management Systems
Permit No. SW8 110906
3. The permittee is responsible for compliance with all permit conditions until such time as 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
stormwater permit.
4. Any individual or entity found to be in noncompliance with the provisions of this storrmwater
management permit or the requirements of the Stormwater rules is subject to the enforcement
procedures as set forth in G.S. 143 Article 21.
5. 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.
6. In the event that the facilities fail to perform satisfactorily, 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. Additional or replacement
stormwater management systems shall receive approval from the Division prior to
construction.
7. The permittee grants DEMLR Staff permission to enter the property during normal business
hours for the purpose of inspecting all components of the permitted stormwater management
facility.
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. 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 of the North Carolina Administrative Code,
Subchapter 2H.1000, and North Carolina General Statute 143-215.1 et. al.
10. Approved plans, application, supplements, operation and maintenance agreements, 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
agreements, approved plans, and specifications shall be maintained on file by the Permittee at
all times.
11. 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.
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 271" day of August 2020.
NORTH CAROLINA ENVI
RO
N
MENTAL MANAGEMENT COMMISSION
f Brian Wrenn,
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Page 6 of 12
State Stormwater Management Systems
Permit No. SW8 110906
Permit Number SW8 110906
Attachment A
2D Anglico and 2N OPS Complexes
Stormwater Permit No. SW8 110906
Onslow County
Designer's Certification — Wet Detention Pond(s)
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 12
State Stormwater Management Systems
Permit No. SW8 110906
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.
M 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 Regional Office
Page 8 of 12
State Stormwater Management Systems
Permit No. SW8 110906
2D Anglico and 2N OPS Complexes
Stormwater Permit No. SW8 110906
Onslow County
Designer's Certification — Infiltration Basin
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 9 of 12
State Stormwater Management Systems
Permit No. SW8 110906
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.
cc: NCDEQ-DEMLR Wilmington Regional Office
Page 10 of 12
State Stormwater Management Systems
Permit No. SW8 110906
2D Anglico and 2N OPS Complexes
Stormwater Permit No. SW8 110906
Onslow County
Designer's Certification — Sand Filter
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 are a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 11 of 12
State Stormwater Management Systems
Permit No. SW8 110906
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 sand filter elevations are per the approved plan.
6. The sand filter is located per the approved plans.
7. A trash rack is provided on the outlet/bypass structure.
8. For open sand filters, 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, a
forebay, and the vegetated filter.
15. The required dimensions of the system are provided, per the approved plan.
cc: NCDEQ-DEMLR Regional Office
Page 12 of 12
1. Operation & Maintenance Aareement I
Project Name
Project Location
2nd Radio Battalion Operations Complex Consolidation
MCB Camp Lejeune, NC
maintenance recoras snau oe Kept on the roiiowing bmv(s). i nis maintenance recora snau oe Kept in a iog 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 pollutant removal efficiency of the BMP(s).
The BMP(s) on this project include (check all that apply & corres onding O&
Bioretention Cell Quantil F-29
Dry Detention Basin
Quantity:
Grassed Swale
Quantity:
Green Roof
Quantity:
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Level SpreaderNFS
'Quantity:
Permeable Pavement
Quantity:
Proprietary System
Quantity:
Rainwater Harvesting
Quantity:
Sand Filter
Quantity:
Stormwater Wetland
Quantity:
Wet Detention Basin
Quantity:
Disconnected Impervious Area
Present:
User Defined BMP
Present:
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed
for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any
changes to the system or responsible party.
Cour
pers,
ackn
W itn
Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
It.
Nolory Public
Onslow C6unty
Commission Expin
05/26/2019
O� HCAR0\;
Thomas Bradshaw
Public Works Civil Engineering
1005 Michael Road
Camp Le'eune, NC 28547
910-451-3238
thomas.bradshaw@usmc.mil
ECEIVE
FEB 10 2017
BY:
Version 1.4
My commission expires
3lohlrhdl
2/6/2017
Page 1 of 6
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1 Grassed Swale Maintenance Requirements I
Important maintenance procedures:
The drainage area of the grassed swale will be carefully managed to reduce the sediment load to the grassed
swale.
After the first-time fertilization to establish the grass in the swale, fertilizer will not be applied to the grassed
swale.
The grassed swale will be inspected once a quarter. Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element:
Potential problem:
How to remediate the problem:
The perimeter of the BMP
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, and then plant a
erosive gullies have formed.
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 approximately six inches.
long.
The entire length of the
Trash/debris is present.
Remove the trash/debris.
swale
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, and then re -sod (or
erosive gullies have formed.
plant with other appropriate species) and water until established.
Provide lime and a one-time fertilizer application.
Sediment covers the grass at
Remove sediment and dispose in an area that will not impact streams
the bottom of the swale.
or BMPs. Re -sod if necessary.
Vegetation is too short or too
Maintain vegetation at a height of approximately six inches.
long.
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 Department of Environment and Natural
damage have occurred at the
Resources Regional Office.
outlet.
rFGEB
EIVE
10 2017
BY:
STORM-EZ 2/6/2017
Version 1.4 0&M Manual Page 3 of 6
The drainage area will be carefully managed to reduce The sediment load to The infiltration basin.
Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until
the plants become established (commonly six weeks).
No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the
vegetation.
The vegetation in and around the basin will be maintained at a height of approximately six inches.
After the infiltration basin is established, it shall be inspected once a quarter 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 shall be kept in a known
set location and shall be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element:
Potential problem:
How to remediate the problem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, and then plant a
infiltration basin
erosive gullies have formed.
ground cover and water until it is established. Provide lime and a one-
time fertilizer application.
The inlet device: pipe or
The pipe is clogged (if
Unclog the pipe. Dispose of the sediment off -site.
swale
applicable).
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to smooth it over and provide erosion
swale (if applicable).
control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
The forebay
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
and reduced the depth to 75%
possible. Remove the sediment and dispose of it in a location where it
of the original design depth.
will not cause impacts to streams or the BMP.
Erosion has occurred or
Provide additional erosion protection such as reinforced turf matting or
riprap is displaced.
riprap if needed to prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by hand. If pesticides are used, wipe
them on the plants rather than spraying.
The main treatment area
A visible layer of sediment
Search for the source of the sediment and remedy the problem if
has accumulated.
possible. Remove the sediment and dispose of it in a location where it
will not cause impacts to streams or the BMP. Replace any media
that was removed in the process. Revegetate disturbed areas
immediately.
Water is standing more than
Replace the top few inches of filter media and see if this corrects the
5 days after a storm event.
standing water problem. If so, revegetate immediately. If not, consult
an appropriate professional for a more extensive repair.
Weeds and noxious plants
Remove the plants by hand or by wiping them with pesticide (do not
are growing in the main
spray).
treatment area.
The embankment
Shrubs or trees have started
Remove shrubs or trees immediately.
to grow on the embankment.
i E G E I E
®9
An annual inspection by an
appropriate professional
Make all needed repairs.
FEB 10 2017
shows that the embankment
needs repair.
gy;
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.
STORM-EZ 2/6/2017
Version 1.4 O&M Manual Page 4 of 6
The receiving water
Erosion or other signs of
Contact the local NC Department of Environment and Natural
damage have occurred at the
Resources Regional Office.
outlet.
EVEI V E
FEB 10 2017 i
BY:
STORM-EZ 2/6/2017
Version 1.4 O&M Manual Page 5 of 6
t Sand Filter Maintenance Requirements I
Important maintenance procedures:
- The drainage area will be carefully managed to reduce the sediment load to the sand filter.
The sedimentation chamber or forebay will be cleaned out whenever sediment depth exceeds six inches.
Once a year, sand media will be skimmed.
The sand filter media will be replaced whenever it fails to function properly after maintenance.
The sand filter shall be inspected quarterly 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 will be kept in a known set location and will be available
upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element:
Potential problem:
How to remediate the problem:
Entire BMP
Trash/debris is present.
Remove the trash/debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as possible.
applicable)
pavement surface.
Perimeter of sand filter
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, and then plant a
erosive gullies have formed.
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 an appropriate height.
long.
Flow diversion structure
The structure is clogged.
Unclog the conveyance and dispose of any sediment offsite.
The structure is damaged.
Make any necessary repairs or replace if damage is too large for
repair.
The inlet device
The pipe is clogged.
Unclog the pipe. Dispose of the sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to smooth it over and provide erosion
swale.
control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Stone verge is clogged or
Remove sediment and replace with clean stone.
covered in sediment (if
applicable).
Forebay or pretreatment
Sediment has accumulated to
Search for the source of the sediment and remedy the problem if
area
a depth of greater than six
possible. Remove the sediment and stabilize or dispose of it in a
inches.
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 a pesticide is used, wipe it
on the plants rather than spraying.
Filter bed and underdrain
Water is ponding on the
Check to see if the collector system is clogged and flush if necessary.
collection system
surface for more than 24
If water still ponds, remove the top few inches of filter bed media and
hours after a storm.
replace. If water still ponds, then consult an expert.
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 Department of Environment and Natural
damage have occurred at the
outlet.
Resources Regional Office.
EGERVER
STORM-EZ
Version 1.4
FEB 10 2017
IV
2/6/2017
Page 6 of 6
O&M Manual
Permit Number: J`Ily
(to be provided by DWQ)
Drainage Area Number: 4
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 time 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 u 9 ZGIZ
Page 1 of 4
Permit Number:
(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 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.
Form SW401-Wet Detention Basin O&M-Rev.4 APR U 9 2012 Page 2 of 4
ti
Permit Number:
(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 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 5 feet in the forebay, the sediment shall
be removed.
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 13
Sediment Removal . a 1 Pe anen Pool
--------------- -- Volume --
- Sediment Removal Elevation 8 I Volume
ft Bottom Elevati0 7 Min. -------------_------
Sediment- Bottom Elevation 7 2 1-ft
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4
APR u 9 2012 Page 3 of 4
I
Permit Number:
(to be provided by DIVQ)
I acknowledge and agree by my signature below that 1 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 name:,Un
BiVfP drainage area number:A
Print name:
Title:Deputy Public Works Officer
Address:BLDG 1005 MICHAEL ROAD MCB CAMP LEJEUNE NC 28547
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, V 1 D-./ I V 017 r( S a Notary Public for the State of
Op i l�b(O\ tyC , County of OA S1 o vJ do hereby certify that
Cw- personally appeared before me this J�
day of Yftx C�, .�o (JL, and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SYLVIA NORRIS
NOTARY PUBLIC
ONSLOW COUNTY
MY COMMISSION EXPIRESI
SEAL
My commission expires�J�} �a15
Form SW401-Wet Detention Basin O&M-Rev.4 APR U 9 2012 j Page 4 of 4
i•
Permit Number.
(to be provided by DWO)
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
flush ng 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.
I approximately six inches.
Form S W401-Wet Detention Basin O&M-Rev.4
APR 0 9 2w I
Page I of 4
Permit Number:
(to be provided by DWO)
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 2roblerns.
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 9 ZOIY Page 2 of 4
1�C1.
Permit Number:
(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
I 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 4 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 4 feet in the forebay, the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 12
Sediment Removaltioi
Pe anen Pool
---------- -- Volume Sediment Removal Elevation 8 Volume
Bottom Elew-ft Min. ------- - ------------------------------------ ----�-�-�
Sediment Bottom Elevation 7 2 1-ft �vPn
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4
APR u 9 Z01Z Page 3 of 4
_-__-J
Permit Number:
(to be provided by DVFQ)
1 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 name:, A IC6 G nc� �N RN ob Ccmplex Ca
BMP drainage area number:
Print
Title:Deputy Public Works Officer
Address:BLDG 1005 MICHAEL ROAD MCB CAMP LEJEUNE NC 28547
Date: 3 - 15 fl-
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.
a Notary Public for the State of
o o Cod Ira- County of C) l S(13W do hereby certify that
C 4 0 I�11Q%W personally appeared before me this I Z
day of rnq(' Ct� AD!1-, and acknowledge the due execution of the
forgoing wet
.detention
- basin �maintenance requirements. Witness my hand and official
seal,
SYLVIA NORRIS
NOTARY PUBLIC
ONSLOW COUNTY
MY COMMISSION EXPIRES A-el5
SEAL
My commission expires �yIS
Form SW401-Wet Detention Basin O&M-Rev.4
All u 9 2012
Page 4 of 4
ii
Permit Number: _��/
(Io be provided by DWQ)
Drainage Area Number: C
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.
Form SW401-Wet Detention Basin O&M-Rev.4
APR U 9 2U1Z
Page I of 4
Permit Number:
(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 s ra in .
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 SW401-Wet Detention Basin O&M-Rev.4
APR U
7
9 2012
Page 2 of 4
I
Permit Number:
(to be provided by D6VQ)
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 out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
or replace the outlet device.
The receiving water
Erosion or other signs of
-Repair
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 4 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 4 feet in the forebay, the sediment shall
be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 12
Sediment Removalvi2
Pe manen Pool
---- Volume Sediment Removal Elevation 8 Volume
Bottom Eleva-ft Min. ------------- ------
Sediment Bottom Elevation 7 I 1-ft n
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4 APR U 9 l01l Page 3 of 4
N
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that 1 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 name: q0 Nr\+ck �1_ aN 1W cos <ouk,xes
BMP drainage area number:
Print
Title:Deputy Public Works Officer
Address:BLDG 1005 MICHAEL ROAD MCB CAMP LEJEUNE NC 28547
Date:
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.
a Notary Public for the State of
'4ZC+JN Ubd ck i r12t County of U V151 o W do hereby certify that �t
C p,( \ (� 0, 4ye� personally appeared before me this LECh
day of IVNaf C h , cep I a, and acknowledge the due execution of the
forgoing detention basin maintenance requirements. Witness my hand and official
seal, LjLqW'.)'i14AAA_�)
SYLVIA NORRIS
NOTARY PUBLIC
ONSLOW COUNTY
MY COMMISSION EXPIRES (5
SEAL
My commission expires `RYA .n 01J
Form SW40I-Wet Detention Basin O&NI-Rev.4 APR U 9 ZO1Z Page 4 of 4
Permit Number:
(to be provided by DWO)
Drainage Area Number: f)
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 IForebay.
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.
Form SW40I-Wet Detention Basin O&M-Rev.4
APR 0 9 Z01Z
Page 1 of 4
/-10
Permit Number:
(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 s ra in .
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 u 9 Z012 Page 2 of 4
Permit Number:
(to be provided by DWO)
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
I 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 4 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 4 feet in the forebay, the sediment shall
be removed.
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 10
Sediment Removal .6 Pe anen Pool
----------------- Volume Sediment Removal Elevation 6 I Volume
Bottom Elevatio_------
Sediment Bottom Elevation 5 1-ft r
Storage Sedime�
Storage
FOREBAY MAIN POND
r --
APR U 9 zuiz
Form SW401-Wet Detention Basin O&M-Rev.4 � Page 3 of 4
. if
Permit Number:
(to be provided by DWQ)
1 acknowledge and agree b - my signature below that I am responsible for the
performance of the mai, ., ce procedures listed above. I agree to notify DWQ of any
problems with the s;s`iem or prior to any changes to the system or responsible party.
Project name::-aD. I�n�`ict oA ANAN, CPS Lr�le (eJ
BMP drainage area number:
Print name:Carl Baker
'ritle:Deputy Public Works Officer
Address:BLDG 1005 MICHAEL ROAD MCB CAMP LEJEUNE NC 28547
Signature:
Date: 3 ^ 1$$— /2
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, ��1� �U 1 C� ^7 Orr / ' a Notary Public for the State of
f`'b a(CA t (\aJ , County of OAS(OW do hereby certify that
/� 1
1. a-f 1, Z10.K`e*— personally appeared before me this �5
day of )ry) A f LN 4010--. and acknowledge the due execution of the
forgoing et�basin maintenance requirements. Witness my hand and official
seal,
SYLVIA NORRIS
NOTARY PUBLIC
ONSLOW COUNTY
MY COMMISSION EXPIRES) a15
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.4 I APR U 9 Z01Z i Page 4 of 4
- r. I
DEMLR USE ONLY
Date eceived
Fee Paid
Permit Number
OS-U& 1109 Oto 4 505 '=
Sri 9 //�J 9�(�
-
r
`e1=r1
NC DEQ 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 110906
2. Project name: 2d Anglico and 2D OPS Complex
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://deg.nc.gov/about/divisions/energy-
m ineral-land-resou rces/ene rgy-mineral-land-rules/stormwater-program/post-construction.
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: httos://dea.nc.aov/about/divisions/enerov-mineral-land-
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: (910) 451-2213 Email: neal.paul@usmc.mil
fit
Stormwater Permit Renewal Form Page 1 of 3 ,May 11, 2018
w
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 item below to indicate that the required information is provided in the application package:
k4llp//A permit application processing fee of $505.00 payable to NCDEQ.
/ 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
-
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
/�L� and protective covenants will be submitted at a later date.
/ 4. O&M Agreements, Please select one:
® 1 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.
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/by title/ Business Registration
ECE"
JUN 022020
BY:
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018
T ,
D. G'ERMITTEE'S CERTIFJCATION
I,. �at^� I� (�O &ykL' OL' - 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 the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my
knowledge, correct and complete
Signature: / Date: ' 2l
NOTARI ATION: ;
I, ` a Notary Public for the State of
T-)Q'- County ofdo hereby certify
that personally appeared before me
this the ;!�k day of 20 and acknowledge the due
aamnnn,,,..
_ agtiorSA}IWrgoing instrument. Witness my hand and official seal,
pvsuc
-- w COUN f - L '
My cbmmis'S'%n expires M 0�10 .
JUN 0 2 2020
BY
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018
:'f r: ifs �)C �.
n �: ��
t1. {..
".i� . !'.
�7 '�
� a
,�
�tlU
i, I, �'
�4U n.0 T.
D., PERMITTEE'S CERTIFICATION
I, U!G the person legally responsible for the permit, certify that I have
a copy of the Permit and O& 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 the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All 'nformation provided on this permit renewal application is, to the best of my
knowledge, correct and 9t.
Signature: Date: 3 �v
NOT
that %r I ty/1aE4
this the Q
execution ofilltY im"1ntv'Asti
NOTgR),
Notary
My Comm
County of h
y of ,
lent. Witness my hand and official seal,
a Notary Public for the State of
do hereby certify
personally appeared before me
20_Z6 and acknowledge the due
;L_ .^ f, &'
JUN O y ?�0 :. •:.
E5
Slormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018
1
gN:B.�pbe:q
�, �.�,i�.i t.�i
��.
J!...'� O
` ♦ �, 1, L �1. �
• ��?, it
Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FO IVE
LOW DENSITY SUPPLEMENT JAN 2 3 2013
This form may be photocopied for use as an original
BY:
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be
found in Session Law 2008-211, 15A NCAC 2H .1000, Session Law 2006-246. and the DWQ BMP Manual.
Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g).
L PROJECT INFORMATION
Project Name: 2D ANGLICO AND 2N BN OPS COMPLEXES
Contact Person: Howard Resnik. PE Phone Number: ( 910 )791-4441
Number of Lots:1 Allowable Built Upon Area (BUA) Per Lot*:1.571.386
Number of Dwelling Units Per Acre**:
Low Density Development (check one): ® without curb & gutter ❑ with curb & gutter, outlets to (check one):
❑ Swales ❑ Vegetated Area
*If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot.
The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be
shown in units of square feet.
**(Phase II Post -Construction (non -SA) only)
II. BUILT UPON AREA
Refer to DWQ's forms and applications website for specific language that must be recorded in the deed
restrictions for all subdivided' projects. (http://h2o.enr.state.nc.us/su/bmp_fonns.htm)
Complete the following calculation in the space provided below where:
• SA Site Area - the total project area above Mean High Water.
• DF Density Factor - the appropriate percent built upon area divided by 100.
• RA Road Area - the total impervious surface occupied by roadways.
• CA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. of Lots - the total number of lots in the subdivision.
• BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front lot line and the edge of pavement.
• Total allowable lot BUA - the computed allowable built upon area for all lots combined.
• Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non -uniform lots.
Form SW401-Low Density-Rev3-2/10/09 Page 1 of 4
Calculation:
uniform lot sizes:
(No of Lots: 1)
For non -uniform lot sizes:
a. (SA: ft2 x DF: ) — (RA
b. Total BUA from lot listing:
111. DESIGN INFORMATION
— (OA: ft2) = BUA per Lot=1,571.386 ft'
ft') — (OA: ft') = Total allowable lot BUA = ft'
sf. b must be <.a
Complete the following table. If additional space is needed the information should be provided in the same
format as Table. I and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual or at
http:/ihdsc.nws.noaa.gov/hdsc/pfds/
Table 1. Swale design information based on the 10-vear storm.
Swale No.
Drainage
Area (ac)
Impervious
Area (ac)
Grassed
Area (ac)
C
Q
(cfs)
Slope
(%)
Vaiiow
(fps)
Vactual
(fps)
Flow
Depth (ft)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
(iEa�
� l
19
pnpkk
R
14 Np
20
Form SW401-Low Density-Rev.3-2/10/09 Page 2 of 4
IV. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 21-1.1000, NCDENR BMP Manual (2007), Session Law 2006-246, and Session Law 2008-211.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An
incomplete submittal package will result in a request for additional information. This will delay final
review and approval of the project. Initial in the space provided to indicate that the following requirements
have been met and supporting documentation is provided as necessary. If the applicant has designated an agent
on the Stormwater Management Permit Application Form, the agent may initial below. If any item is not met,
then justification must be attached. Only complete items n througli p for projects with curb outlets.
Page/Plan
Initials Sheet No.
1� ( C io \ a. t For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer
is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative
buffer adjacent surface waters is provided.
Le =1u\ b. t For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative buffer
is provided adjacent to surface waters.
C. t For Phase 11 Post -Construction projects: All built upon area is located at least 30 feet
landward of all perennial and intermittent surface waters.
fit( t� Mk d. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to the sale of any lots.
u1A. CL, e. Built upon area calculations are provided for the overall project and all lots.
A,Q, NI R f Project conforms to low density requirements within the ORW AEC. (if applicable per
15A NCAC 2H .1007)
11,A, CEIZb g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1 for curb outlet swales.
�i g Ct ON4. Longitudinal slope of swales is no greater than 5%; for non -curb outlet projects, calculations
for shear stress and velocity are provided if slope is greater than 5%.
ud, L\(�,_ i. At a minimum, swales are designed to carry the 10 year storm velocity at a non -erosive rate.
kit, Cw\ci j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non -
erosive velocity (for this flow requirement into wetlands, non -erosive is velocity < 2 ft/s).
k. Swale detail and permanent vegetation is specified on the plans.
_ CC,56S I. Swale detail provided on plans; includes grass type(s) for permanent vegetative cover. .
kit, W It m. Swales are located in recorded drainage easements.
N!.L (VII' n.tt Length of swale or vegetated area is at least 100 feet for each curb outlet.
1L t , N) k o tt The system takes into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each Swale).
NIA . p tt Curb outlets direct flow to a swale or vegetated area. �������
t Projects'in the Neuse, Tar -Pamlico, Catawba River basins, and Randleman Lake may regt re add gpal but
tt Only complete these items for projects with curb outlets. JAP1 ( J
Form SW401-Low Density-Rev.3-2/10/09 Page 3 of 4
SWALE SYSTEM MAINTENANCE REQUIREMENTS
Mowing will be accomplished as needed according to the season. Grass height will'not exceed six inches
at any time; and grass will not be mowed too close to the ground or "scalped".
Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
Eroded areas of the swales will be'repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope.
Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title:Neal Paul. Deputy Public Works Officer
Phone
Signature:
Note: The legally res
resident of the
day of
Date:
not be a homeowners association unless more than 50% of the lots have been sold and a
has been named the president.
do he by certify tlfa
�0 �� , and
and official
State of UYW I, County of
appeared before me this 1-0
the due execution of the forgoing Swale maintenance requirements.
F—CF—BVE
JAN 2 3 202
BY:
KELLEY VANDECOEVERING .
SEAQTARY PUBLIC My commission expires
ONSLOW COUNTY
STATE OF NORTH CAROLINA
Form SW401-Low Density-Rev3-2/10/09 Page 4 of 4
Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be
found in Session Law 2008-211, 15A NCAC 2H .1000, Session Law 2006-246, and the DWQ BMP Manual.
Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g).
I. PROJECT INFORMATION
Project Name: 2D ANGLICO AND 2N BN OPS COMPLEXES
Contact Person: Howard Resnik, PE Phone Number: ( 910 )791-4441
Number of Lots:I Allowable Built Upon Area (BUA) Per Lot*:1,575,885
Number of Dwelling Units Per Acre**:
Low Density Development (check one): ® without curb & gutter ❑ with curb & gutter, outlets to (check one):
❑ Swales ❑ Vegetated Area
*If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot.
The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be
shown in units of square feet.
**(Phase 11 Post -Construction (non -SA) only)
II. BUILT UPON AREA
Refer to DWQ's forms and applications website for specific language that must be recorded in the deed
restrictions for all subdivided projects. (http://h2o.enr.state.nc.us/su/bmp_fonns.htm)
Complete the following calculation in the space provided below where:
• SA Site Area - the total project area above Mean High Water.
• DF Density Factor - the appropriate percent built upon area divided by 100.
• RA Road Area - the total impervious surface occupied by roadways.
• OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. of Lots - the total number of lots in the subdivision.
• BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front lot line and the edge of pavement.
• Total allowable lot BUA - the computed allowable built upon area for all lots combined.
• Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non -uniform lots.
Form SW40I-Low Density-Rev.3-2/10/09 Page 1 of 4 i I
APR 0 9 201Z
Calculation:
For uniform lot sizes:
(SA: 6,566,187 ft2 x DF:.24)—(RA: ft')—(OA: ft') = BUA per Lot = 1,575,885 ft2
(No of Lots: 1)
For non -uniform lot sizes:
a. (SA: ft x DF: ) — (RA: ft2) — (OA: ft2) = Total allowable lot BUA = ft2
b. Total BUA from lot listing: sf. b must be < a
11I. DESIGN INFORMATION
Complete the following table. If additional space is needed the information should be provided in the same
format as Table I and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual or at
http://hdsc.nws.noaa.gov/hdsc/pfds/
Table 1. Swale desien information based on the 10-vear storm.
Swale No.
Drainage
Area (ac)
Impervious
Area (ac)
Grassed
Area (ac)
C
Q
(cfs)
Slope
(%)
Vaiiom,
(fps)
Vactual
(fps)
Flow
Depth (ft)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Form SW401-Low Density-Rev3-2/10/09 Page 2 of 4 APR 0 9 Z01Z
IV. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 2H .1000, NCDENR BMP Manual (2007), Session Law 2006-246, and Session Law 2008-21 1.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An
incomplete submittal package will result in a request for additional information. This will delay final
review and approval of the project. Initial in the space provided to indicate that the following requirements
have been met and supporting documentation is provided as necessary. If the applicant has designated an agent
on the Stormwater Management Permit Application Form, the agent may initial below. If anv item is not met,
then justification must be attached. Only complete items n through p for projects with curb outlets.
Page/Plan
Initials Sheet No.
CE Id a. t
For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer
is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative
buffer adjacent surface waters is provided.
CE M b. t
For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative
buffer is provided adjacent to surface waters.
NIA- C. t
For Phase II Post -Construction projects: All built upon area is located at least 30 feet
landward of all perennial and intermittent surface waters.
r✓I Pr d.
Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to the sale of any lots.
c IN is e. Built upon area calculations are provided for the overall project and all lots.
yl fti £ Project conforms to low density requirements within the ORW AEC. (if applicable per
15A NCAC 2H .1007)
CES�S g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1 for curb outlet swales.
•aC W-Kr h. Longitudinal slope of swales is no greater than 5%; for non -curb outlet projects,
calculations for shear stress and velocity are provided if slope is greater than 5%.
.Irs i. At a minimum, swales are designed to carry the 10 year storm velocity at a non -erosive rate.
rut t j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non -
erosive velocity (for this flow requirement into wetlands, non -erosive is velocity < 2 ft/s).
C:ESOS k. Swale detail and permanent vegetation is specified on the plans.
C_ESos' 1. Swale detail provided on plans; includes grass type(s) for permanent vegetative cover.
rvl m. Swales are located in recorded drainage easements.
n.tt Length of swale or vegetated area is at least 100 feet for each curb outlet.
o.tt The system takes into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each swale).
p tt Curb outlets direct flow to a swale or vegetated area.
t Projects in the Neuse, Tar -Pamlico, Catawba River basins, and Randleman Lake may require additional buffers.
tt Only complete these items for projects with curb outlets.
Form SW40I-Low Density-Rev.3-2/10/09 Page 3 of 4
APR 0 9 Z01Z
V. SWALE SYSTEM MAINTENANCE REQUIREMENTS
Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches
at any time; and grass will not be mowed too close to the ground or "scalped".
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
4. Eroded areas of the Swales will be repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope.
Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered; piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that 1 am responsible for the performance of the six
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.
Print Name and Title: (, i ( H. aCl/ 04uia /'V MI.o Llar-ks 0-X, ,er-
Address (005 &_Iliael RJ Caao LGiGaN eEE. G Zg!"/z
Phone: *0 — U 213' I J Date:
Signature: two i
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.
�� ji /�
L �Y (V i 0.] b f f 13 , a Notary Public for the State o 0!"Is, LUJ )Nn County of
� r% S( I)w , do hereby certify that C 4r I H- Q� N(-e.� . personally appeared before me this
day of 1 r, WCLl fL , 9,0 1 9-- , and acknowledge the due execution of the forgoing swale maintenance requirements.
Witness my hand and official seal,
r
Notary si ture
SYLVIA NORRIS
NOTARY PUBLIC
ONSLOW COUNTY
MY9W"l SION EXPIRES
My commission expires 3 0,, 4` a(5
Form SW401-Low Density-Rev.3-2/10/09 Page 4 of 4 I APR U 9 2012
1- r.
Permit No. " 1 I v/ V (n
(lobe provided by DWO)
IN I
D EN
`r
NCDER
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 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name 2nd Radio Bn
Contact person Thomas Bradshaw, Public Works GNI Engineering
Phone number 910-451-3238
Date 2l012OI7
Drainage area number Existing Wet Pond
II. DESIGN INFORMATION
Site Characteristics
Drainage area
1,019,945 f?
Impervious area, post -development
627,687 ffe
%impervious
61.54 h
Design rainfall depth
2.4 in
Storage Volume: Non -SA Waters
Minimum volume required
Volume provided
Storage Volume: SAWaters
1.5' runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr much
Minimum volume required
Volume provided
Peak Flow Calculations
Is the preipost control of the lyr 24hr storm peak flow required?
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 cleanout, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there addi8onal volume stored above the state -required temp. pool?
Elevation of the top of the additional volume
76,894 fie
76,991 fte
OK, volume provided is equal to or in excess of volume required.
ff'
C A
to
ff,EAL
W9121_
� B••.(C ZlJo�t�Q�: ���
:�P/q
y (YorN)
vGINE•'�����
3.8 in
0.30 (unitless)
(unitless)
inlhr
42.23 fO/sec
ft'tsec
fe/sec
[� ��//-''ee ®�{�--•
E G E I `°' IE
14.20 fmsl
13.00 fmsl
9.90 frost
FES 1 2011
13.50 fmsl
12.50 trust
8.00 frost
BY:
7.00 frost
1.00 If
N (Y or N)
14.2 fmsl
OK
Form SW401-Wet Detention Basin-Rev.9-4/16/12 Parts I. a It. Design Summary, Page 1 of 2
Permit
(to be provided by DWO)
II. DESIGN INFORMATION
Surface Areas
Area, temporary pool
67,603 fit'
Area REQUIRED, permanent pool
54,771 ft'
SAIDA ratio
5.37 (unitless)
Area PROVIDED, permanent pool, Are,,,yrm
57,953 f?
OK
Area, bottom of 10ft vegetated shelf, A,,i
51,333 ft
Area, sediment cleanout, top elevation (bottom of pond), A,,.
34,242 f?
Volumes
Volume, temporary pool
76,991 ft'
OK
Volume, permanent pool, Vr,m,-rra
219,646 ft'
Volume, forebay (sum of forebays if more than one forebay)
42,721 fin
Forebay % of permanent pool volume
19.4r/ %
OK
SAIDA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used?
Y (Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
5.37 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
(Y or N)
Volume, permanent pool, V.
219,646 ft'
Area provided, permanent pool, Ar�nm,
57,953 f?
Average depth calculated
If
Need 3 fit min.
Average depth used in SAIDA, d.„, (Round to nearest 0.5ft)
It
Calculation option 2 used? (See Figure 10-2b)
(Y or N)
Area provided, permanent pool, Ar,,,,.,
57,953 ft'
Area, bottom of 1 Oft vegetated shelf, A.„„ n
51,333 fir
Area, sediment cleanout, top elevation (bottom of pond), Arrty,,,d
34,242 f?
"Depth" (distance brw bottom of 1 Oft shelf and top of sediment)
4.50 It
Average depth calculated
4.22 it
OK
Average depth used in SAIDA, dr, (Round to down to nearest 0.5ft)
4.0 ft
OK
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Coefficient of discharge (Co)
Driving head (Hr)
Drawdown through weir?
Weir type
Coefficient of discharge C.)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or 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 buildrf-out?
Drain mechanism for maintenance or emergencies is:
Y (Y or N)
4.00 in
in'
0.60 (unitless)
0.40 it
N (Y or N)
(unitless)
It
It
42.23 ft'/sec
ft'/sec
0.26 ft'/sec
3.62 days OK, draws down in 2-5 days.
ECE R$
3:1
OK
10'
OK
FEB 14 2017
10.0 ft
OK
3:1
OK
3.0 :1
OK
BY:
y (Y or N)
OK
3.3ft
OK
N (Y or N)
OK
N (Y or N)
Insufficient. Recorded drainage easement required.
Y (Y or N)
OK
portable pump
Form SW401-Wet Detention Basin-Rev.9-4118112 Parts 1. 511. Design Summary, Page 2 of 2
Permit
III. REQUIRED ITEMS CHECKLIST
(to be provided by D WQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
f> 6z
CS^161
1. Plans (1" - 50' or larger) of the entire site showing:
C5-!eS
- Design at ultimate build -out,
L G- Joe -
- Off -site drainage (if applicable),
to17
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
CC -foc -
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
107
- Outlet structure with trash rack or similar,
6G-flD
- Maintenanceaccess,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
3. Section view of the wet detention basin (1" = 20' or larger) showing:
ctw.. A
- Side slopes, 3:1 or lower,
.�.�
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
m
"IC 3
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
ffo the plans prior to use as a wet detention basin. d
GZ
5. A table of elevations, areas, incremental volumes &accumulated volumes for overall pond and for Forebay,
to verify volume provided.
G Z
C�iO f
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
�////
7. The supporting calculations.
p
D �Z
8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
i� 9. A copy of the deed restrictions (if required).
GL Tk 10. A soils report that is based upon an actual field inve So En B ad in
Ciu! °r p p seilKonrig�r�nAinfilirationtests. County
soil maps are not an acceptable source of soils infotionJAN Z 6 2017
BY: ----
Form SW401-Wet Detention Basin-Rev.9-4118112 Part III. Required Items Checklist, Page 1 of 1
Permit
(to be Provided by DWO)
Agin
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 /it) must be printed, filled out and submitted along with all of the required information.
o2�p W ATEgOG
�n r
� r
O T
I, PROJECT -INFORMATION n, ",.,. '"
Project name - 2DANGLICOAND2NBNOPSCOMPLEXES,
Contact person HOWARD RESNIK, PE
Phone number 910-791-4441 '
Date 4/18/2012'
Drainage area number A
IL.DESIGNINFORMATION .. 20 5 ;:
She Characteristics
Drainage area - 974,361 hr
Impervious area, post -development 601,894 ft'
%impervious 61.46 %
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 required?
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 1 Oft vegetated shelf elevation
Sediment cleanout, 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
73,442fe
76,991 I(!'
OK, volume provided is equal to or in excess of volume required.
F,
y (Y or N)
3.8'in
' 0.30'(unitless)
0.66,(unitless)
`0.16 Whir OK
h'/sec
h'/sec
felsec
14.20'fmsl
-13.00 fmsl
9.90 fmsl
13.50fmsl
12.50 fmsl
. 8.00 fmsl
.. 7.00 fmsl
1.00 it
N (Y or N)
14.2 fmsl OK
APR 2 3 2012
Fonn SW401-Wet Detention Basin-Rev.9-4/18112 Parts 1. a H. Design Summary, Page / of 2
Permit No.
(fo be Providedby DW0)
II DESIGN INFORMATIONIV: `, Y .,? .,.`.-4;3" t-�S>b A �. ` $''' . < s .xx.
Surface Areas
Area, temporary pool 67,603 f�
Area REQUIRED, permanent pool 52,983 f?
SAIDA ratio 5.41 (unitless)
Area PROVIDED, permanent pool, Ao,._pw `" 57,953:fe OK
Area, bottom of 10tt vegetated shelf, Aw a„„ , -, -. 51,333,W
Area, sediment cleanout, top elevation (bottom of pond), k d 34,242f
Volumes
Volume, temporary pool
Volume, permanent pool, Vp,-, ,,
Volume, forebay (sum of forebays if more than one forebay)
Forebay % of permanent pool volume
SAIDA Table Data
Design TSS removal
Coastal SAIDA Table Used?
MountairdPiedmont SAIDA Table Used?
SAIDA ratio
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 104b)
Volume, permanent pool, VP,.-"
Area provided, permanent pool, A.r„_u
Average depth calculated
Average depth used in SAIDA, d,,, (Round to nearest 0.5ff)
Calculation option 2 used? (See Figure 10-2b)
Area provided, permanent pool, A,,_.
Area, bottom of 1 On vegetated shelf, Am, y„ n
Area, sediment cleanout, top elevation (bottom of pond), A, ,yora
'Depth' (distance b1w bottom of 10n shelf and top of sediment)
Average depth calculated
Average depth used in SAIDA, d,,, (Round to nearest 0.5n)
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (it -non -circular)
Coefficient of discharge (CD)
Driving head (Ha)
Drawdown through weir?
Weir type
Coefficient of discharge (C„)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or 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 d orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all mnoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Form SW401-Wat Detention Basin-Rat8-0/17109
76,99140 OK
' 219,464 le
t 42,721 its
19.5% % OK
90%
Y '(Y or N)
N (Y or N)
5.41 (unitess)
IN -,(Y or N)
219,464 ft'
57,953 f
n
n
'Y..,. (Y or N)
57,953 tit'
51 33.9 fe
34,242 tt
4.50 n
4.22:'ff
4.0.n
a Y (Y or N)
4.00 in
in'
0.60 (unitless)
0.40 it
n ',(YorN)
(unitless)
(unitless)
It
n
42.23.fe/sec
98.54 ft'/sec
0.26�f!'/sec
3.35 days
3':1
10 :1
10.0 n
3::1
3.0 :1
.y - .(Y or N)
3.3 it
n ". (Y or N)
n'- (Y or N)
y'. (Y or N)
mrfahlc n„mn -
Need 3 it min.
OK
OK
OK, draws down in 2.5 days.
OK
OK
OK
OK
Of
OK
OK
OK
Insufficient. Recorded drainage easement required.
OK
Parts I. 811. Design Summary, Page 2 of 2
APR 0 9 Z017
Permit
(to be provided by DWQ)
III:, REOUIRED,ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials No.
��
'S'hreee't'
#oR, y"
1. Plans (1' - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
u, R. CE
2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
kle` CC 5U
3. Section view of the wet detention basin (1' = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
/1 t CE M
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
k. rZ, Calcs
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verify volume provided.
ll. 2. ( 6Ivl
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
u,A. &mV!4
7. The supporting calculations.
A, 9. cnc s
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
M F 9. A copy of the deed restrictions (if required).
c do 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.8-9/17/09
[APR-
U 9 ZU1Z
Part III. Required Items Checklist, Page 1 of 1
�`��j/O�O�
Permit No.
.
(to be provided by DWO)
A
/
op W A 7-
rn
NCDENR
t
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 2D ANGLICO AND 2N BN OPS COMPLEXES "
Contact person " HOWARD RESNIK, PE
Phone number 910.791 4441
Date 311/2012'
Drainage area number
Ih: DESIGN INFORMATION.,.
Site Characteristics Y
Drainage area
' 497,272 fe
Impervious area, post -development
252,148 fe
impervious
50.71 %
Design rainfall depth
1.5 in
Storage Volume: Non -SA Waters
Minimum volume required
31,713 ff'
Volume provided I I. , 35,871.ft'
Storage Volume: SA Waters
1.5' runoff volume f 3
Pre -development 1-yr, 24-hr runoff - - it,
Post -development 1-yr, 24-hr runoff - 'It,
Minimum volume required fl3
Volume provided ;tt3
Peak Flow Calculations
Is the prelpost control of the 1 yr 24hr storm peak flow required?
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
SHWf elevation (approx. at the perm. pool elevation)
Top of 10fl vegetated shelf elevation
Bottom of 1 Off vegetated shelf elevation
Sediment cleanout, 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
OK
OK, volume provided is equal to or in excess of volume required.
(Y or N)
3.8 in
0.30 (unifless)
0.66 (unitless)
0.16 iNhr OK
21.44 fe/sec
47.18 felsec
25.74 ff /sec
13.101msl
12.00 bnsl
10.50:fmsl
12.50.fmsl
11.50 twist
8.00 Ind
7.00 fmsl
1.00 ft --- _
..N, (YorN) APR U 9 2012 '
13.1fmsl OK --_
Form SW401-Wet Detention Basin-Rev.8-9117/09
Parts I. 8 II. Design Summary, Page 1 of 2
Permit No.
�- Ito be provided by DWO)
Surface Areas
Area, temporary pool
Area REQUIRED, permanent pool
SAIDA ratio
Area PROVIDED, permanent pool, AP,,.,
Area, bottom of 10n vegetated shelf, Am, an
Area, sediment cleanout, top elevation (bottom of pond), Awe„
volumes
Volume, temporary pool
Volume, permanent pool, VP,,,_P,u
Volume, forebay (sum of forebays if more than one forebay)
Forebay % of permanent pool volume
SAIDA Table Data
Design TSS removal
Coastal SAIDA Table Used?
Mountain/Piedmont SAIDA Table Used?
SAIDA ratio
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
Volume, permanent pool, VP,,,_p,
Area provided, permanent pool, AP,.-Pw
Average depth calculated
Average depth used in SAIDA, d,,, (Round to nearest 0.5n)
Calculation option 2 used? (See Figure 10-2b)
Area provided, permanent pool, Am„
Area, bottom of 1 On vegetated shelf, A., y,
Area, sediment cleanout, top elevation (bottom of pond), A,,p.
.` 34,379f1z
25,212 flz
5.07 (unitless)
'.29,496,fe OK
26,088 fe
19,441 fts
_ - 35,871'fe OK
' 93,377,fe
18,946n3
20.3%% OK
90' °/
Y ;. ;(Y or N)
N (Y or N)
5.07 (unilless)
N (Y or N)
93,377 fe
29,496 fe
It
- n
.Y .(Y or N)
29,496 fl?
26,088 f?
19,441 ft'
Need 3 It min.
'Depth' (distance b/w bottom of 10tt shelf and top of sediment)
3.50 it
Average depth calculated
3.53 It OK
Average depth used in SAIDA, d,,, (Round to nearest 0.5n)
- "3.5;tt OK
Drawdown Calculations
Drawdown through orifice?
-.. y•(Y or N)
Diameter of orifice (if circular)
2.75,in
Area of orifice (if -non -circular)
- in'
Coefficient of discharge (CO)
- 0.60,(unitless)
Driving head (HO)
0.37:n
Drawdown through weir?
- n (Y or N)
Weir type
1(unNess)
Coefficient of discharge (C.)
(unitless)
Length of weir (L)
It
Driving head (H)
it
Pre -development l-yr, 24-hr peak flow
- 21.44 fe/sec
Post -development l-yr, 24-hr peak flow
47,18: ft31sec
Storage volume discharge rate (through discharge orifice or weir)
0.12 f?/sec
Storage volume drawdown time . 3.44Aays
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of nowpath 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:
Forth S W401-Wet Detention Basin-Rev.09/17/09
OK, draws down in 2-5 days.
Y:1
OK
" - 10,:1
OK
- 10.0.It
OK ,
3':1
OK
3.0:1
OK
y - (Y or N)
OK
2.4 it
OK
n (Y or N)
OK
- n (Y or N)
Insufficient. Recorded drainage easement required.
y:(Y or N)
OK
portable pump
Parts I. & II. Design Summary, Page 2 of 2
APR u 9 Z01Z
r
Permit No.
( (to be provided by DWO)
IlljxREQUIREDrITEMSCHECKLIST q
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Paget Plan
Initials
Sheet No.
k r ,
CE Io
1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
il( rQ-
E So
2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
3. Section view of the wet detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
li r Q. CIF lo( 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
6. A construction sequence that shows how the wet detention basin will be protected from sediment unfit the
entire drainage area is stabilized.
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
dig, Nl tt 9. A copy of the deed restrictions (if required).
II.Q, icy_ 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
-- -- 7
APR U 9 ZUI
Form SW401-Wet Detention Basin-Rev.8-9/17/09 — -- —� Part III.. Required Items Checklist, Page 1 of 1
Permit No.
t (lobe provided by DWO)
NCDENR
O1F W A r�90
AA I
� r
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.
Project name
Contact person
Phone number
Date
Drainage area number
- -
910-791-4441
'311/2012
C:
2D ANGLICO AND 2N BN OPS COMPLEXES
HOWARD RESNIK; PE' ;.
Ili DESIGN INFORMATION
Site Characteristics
Drainage area
228,797,1?
Impervious area, post -development
133,601i r
, %impervious
58.39%
Design rainfall depth
1.5 in
Storage Volume: Non,SA Waters
Minimum volume required
16,580. ft'
OK
Volume provided
19,797'h'
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters .
1.5' runoff volume
Pre -development l-yr, 24-hr runoff
Post -development l-yr, 24-hr runoff
It'
Minimum volume required
t
Volume provided
its
Peak Flow Calculations
Is the prelpost control of the lyr 24hr storm peak flow required?
(Y or N)
1-yr, 24-hr rainfall depth
3.8in
Rational C, pre -development
0.30(unidess)
Rational C, post -development
- 0.68-(unitiess)
Rainfall intensity: 1-yr, 24-hr storm
- 0.16 irVhr
OK
Pre -development 1-yr, 24-hr peak flow
9.86 fe/sec
Post -development 1-yr, 24-hr peak flow
22.39 ft'/sec
Pre/Post 1-yr, 24-hr peak flow control
12.53 ff'/sec
Elevations
Temporary pool elevation
12.80.fmsl
Permanent pool elevation
- 12.00 fmsl
SHWT elevation (approx. at the perm. pool elevation)
11.10.fmsl
Top of 10R vegetated shelf elevation
12.50fmsl
Bottom of 1 Oft vegetated shelf elevation
11.501msl
Sediment cleanout, top elevation (bottom of pond)
8.00 fmsl
Sediment cleanout, bottom elevation
7.00 fmsl
Sediment storage provided
1.00 It
Is there additional volume stored above the state -required temp. pool? ' N '(Y or N)
Elevation of the top of the additional volume 12.8 fmsl OK
Form SW401-Wet Detention Basin-Rev.e-9117109 APR U 9 ZUiZ Parts I. & II. Design Summary, Page 1 of 2
-
' 1
Permit No.
no eeProvided by DWO)
• k DESIGN INFORMATION o... s4... »:,.. ,::„ ` •`-
•" . " �'°T: y " fi^"" �.,w A iws, ; �,'t,-+=
Surface Areas
Area, temporary pool
" �26,106.fe
Area REQUIRED, permanent pool
13,362 ft'
SAIDA ratio.
5.84(unidess)
Area PROVIDED, permanent pool, A.,
22,626 OK
OK
Area, bottom of 1Off vegetated shelf, Aw_w
_19,848;ttr
Area, sediment cleanout, top elevation (bottom of pond), A�yx� (,
I: 14,526 ft,
Volumes
Volume, temporary pool
19;797,ft" OK
Volume, permanent pool, VP,,,,_p,
70,586,fC'
Volume, forebay (sum of torebays if more than one torebay)
14,325 f 3
Forebay %of permanent pool volume
20.30/6 % OK
SAIDA Table Data
Design TSS removal
90;%
Coastal SAIDA Table Used? -
, Y ` " -;(Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
5.84 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
N - '(Y or N)
Volume, permanent pool, VP,m-"
70,586 fe
Area provided, permanent pool, A�
22,626 ft'
Average depth calculated
- •ft Need 3 ft min.
Average depth used in SAIDA, d,,, (Round to nearest 0.5ft)
- '' ft
Calculation option 2 used? (See Figure 10.2b)
. Y (Y or N)
Area provided, permanent pool, A,m,.,
22,626 fe
Area, bottom of 11Nt vegetated shelf, Aw, tee,.
19,848 fe
Area, sediment cleanout, top elevation (bottom of pond), A,.,a
'Depth' (distance blw bottom of 1 Oft shelf and top of sediment)
Average depth calculated
Average depth used in SAIDA, d,,, (Round to nearest 0.5ff)
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Ccefficient of discharge (CD)
Driving head(H.)
Drawdown through weir?
Weir type
Coefficient of discharge (C„)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or 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 ulfimate build -out?
Drain mechanism for maintenance or emergencies is:
Farm SW401-Wet Detention Basin-Rev.8-9/17109
14,526 fe
3.50 ft
3.50,ft
3.5 ft
. y..(Y or N)
2.50 in
in'
0.60 (uni less)
0.27,ft
n.',. '(Y or N)
(unitless)
(unhless)
ft
ft
9.86. ft"Isec
22.39 Osec
0.09. ft"Isec
2.69 days
3':1
10 :1
10.0'ft
3 :1
3A':1
y (Y or N)
2.7 ft
.n.... (Y or N)
n..... (YorN)
y-- I(Y or N)
nortable numn . . .
(— - — -
OK
OK
OK, draws down in 2-5 days.
OK
OK
OK
OK
OK
OK
OK
OK
Insufficient. Recorded drainage easement required.
OK
Parts 1. & 11. Design Summary, Page 2 of 2
APR 0 9 ZGIZ
Permit
(to be provided by DWO)
III.,REQUIRE0ITEMVCHECKILISTg " '�" = E •: �;= „ - -
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CC fol 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
u I#- CE ,P
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
3. Section view of the wet detention basin (1' = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
CE 101
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
uTn- Calcc
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verify volume provided.
_ CFlollol
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
At, k- e I
7. The supporting calculations.
eAC1,54 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
Ivilk 9. A copy of the deed restrictions (if required).
41(s 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
APR U 9 2012
Form SW401-Wet Detention Basin-Rev.8-9/17/09 - — — --J
. Part III. Required Items Checklist. Page 1 of 1
Permit No.
(to be provided by DWD)
J
®A
NCDENR
OF w A rFyoG
h r
s
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.
1. PROJECT INFORMATION
Project name 2D ANGLICO AND 2N BN OPS COMPLEXES -
Contact person .: HOWARD RESNIK, PE
Phone number 91(Ml 4441 -
. Date 3/1Y2012 -
Drainage area number .D _
II. -DESIGN. INFORMATION
She Characteristics ,
Drainage area 806,844 f?
Impervious area, post -development 394,958'he
impervious 48.95
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 required?
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
SH WT elevation (approx. at the perm, pool elevation)
Top of 1 Oft vegetated shelf elevation
Bottom of tOh vegetated shelf elevation
Sediment cleanout, 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.8-9r17/09
54,145 h'
ltti
Insufficient required volume.
OK, volume provided is equal to or in excess of volume required.
(Y or N)
3.8 in
- 0.30(unitless)
.0.62.(unitless)
0.161Nhr OK
34.78 fe/sec
71.91 fe/sec
37.13 h'/sec
11.00'fmsl
—10.00 hnsl
8.60 first
10.50 fmsl
9.50 first
6.00,fmsl
5.00 fmsl
1.00 It
N. r. (Y or N)
11.0 fmsl OK
r_
APR 0 9 2012
Parts I. & II. Design Summary, Page 1 of 2
Permit
(to be prowled by DWO)
ILiDESIGNINFORMATION' >'..,r':�-?', h •," ;..-,`
Surface Areas
Area, temporary pool �57,402.f1z
Aiea REQUIRED, permanent pool
SAIDA ratio
Area PROVIDED, permanent pool, Am.
Area, bottom of 1Off vegetated shelf, Aga„„
Area, sediment cleanout, top elevation (bottom of pond), At.
Volumes
Volume, temporary pool
Volume, permanent pool, V,,my,p
Volume, forebay (sum of forebays if more than one forebay)
Forebay % of permanent pool volume
,SAIDA Table Data
Design TSS removal
Coastal SAIDA Table Used?
Mountain/Piedmont SAIDA Table Used?
SAIDA ratio
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
Volume, permanent pool, V,..l Area provided, permanent pool, Adam.
Average depth calculated
Average depth used in SAIDA, d,,, (Round to nearest 0.5ft)
Calculation option 2 used? (See Figure 10-2b)
Area provided, permanent pool, Am.
Area, bottom of 10ff vegetated shelf, A,_ �
Area, sediment cleanout, top elevation (bottom of pond), Awt a
39,535 fe
4.90. (unitless)
- 48,499 fe OK
- 41,819.fe
' 28,129!le
OK
145,008 fe
..... 31,154 tt3
21.5% % OK
90 i
Y JY or N)
N (Y or N)
4.90 limitless)
.(Y or N)
145,008 fe
48,499 fe
It
It
Y (Y or N)
48,499 fit
41,819 ff
28,129 fh
Need 3 it min.
'Depth' (distance h/w bottom of 1 Off shelf and top of sediment) 3.50 it
Average depth calculated 7-19 3.39tt OK
Average depth used in SAIDA, d,,, (Round to nearest 0.511) 3.5'it OK
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Coefficient of discharge (Co)
Driving head (Ho)
Drawdown through weir?
Weir type
Coefficient of discharge (C„)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development t-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or 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 8 orifice?
Freeboard provided
Vegetated filler provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Forth SW401-Wet Detention Basin-Rev.8 W17/09
Y.,. (Y or N)
- 3.50: in
in'
0.60 (unilless)
0.33 it
n '(YorN)
limitless)
(unitless)
It
It
34.78,felsec
71.91 fe/sec
0.18 fe/sec
3.39 days
OK, draws down in 2-5 days.
.. _. 3.:1
OK
10 :1
OK
-` 10.0.11
OK
.3.:1
OK
-; 3.0:1
OK
y. .(Y or N)
OK
'2.5:ff
OK
n (Y or N)
OK
n ''(Y or N)
Insufficient. Recorded drainage easement required.
.-y (Y or N)
OK
portable pump
,.. ..
Parts I. a II. Design Summary, Page 2 of 2
APR 0 9 Z01Z
Permit
(to be provided by DWD)
IW REQUIRED ITEMS.CHIECKGST-.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
CC I01
1. Plans (1' - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
r R
CC 50y
2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
U 904 3. Section view of the wet detention basin 0' = 20' or larger) showing
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
LC lot
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
�i. it,
(� Vs
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for frebay,
to verify volume provided.
Mil, L.
CC 101
6. A construction sequence that shows how the wet detention basin will be protected from sediment unfit the
entire drainage area is stabilized.
A,R.
e�bs�J
7. The supporting calculations.
b ,a
em1 sa
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
If ,A, NI N 9. A copy of the deed restrictions (if required).
.0 Ics 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.8-9/17/09 APR 0 _9 ZGIZ- — Part III. Required Items Checklist, Page 1 of 1
Permit No. V W D (1=(,7
(to be provided by DWO)
'/�+
O?pf W ATFgOG
LT -WA
STORMWATER MANAGEMENT PERMIT APPLICATION FORM o
NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Pad 111) must be printed, filled out and submitted along with all of the required information.
Contact Person
Phone Number
Date
Drainage Area Number
Bn
Thomas Bradshaw, Public Works Civil Engineering
910-451-3238
211612017
1
II. DESIGN INFORMATION
Site Characteristics
Drainage area
72,309.60
ff'
Impervious area
29,620.60
ft'
Percent impervious
40.96
%
Design rainfall depth
1.50
in
Peak Flow Calculations
1-yr, 24-hr rainfall depth
3.60
in
1-yr, 24-hr intensity
0.15
inmr
Pre -development 1-yr, 24-hr discharge
0.07
ft'Isec
Post -development 1-yr, 24-hr discharge
0.00
ft'Isec
Pre/Post 1-yr, 24-hr peak flow control
-0.07
ft3lsec
Storage Volume: Non -SA Waters
Minimum design volume required
3,784.28
ff'
Design volume provided
9,460.70
h' OK for non -SA waters
Storage Volume: SA Waters
1.5' runoff volume
It
Pre -development 1-yr, 24-hr runoff volume
f 3
Post -development 1-yr, 24-hr runoff volume
It
Minimum required volume
It'
Volume provided
If
Soils Report Summary
Soil type
Baymeade
Infiltration rate
2.59
in/hr
SHWT elevation
22.50
fmsl
Basin Design Parameters
Drawdown time
1.70
days OK
Basin side slopes
3.00
:1 OK
E C E B
Basin bottom elevation
24.50
fmsl OK
Y G
Storage elevation
26.60
fmsl
Storage Surface Area
7,386.00
ff2
FEB 2 2 2017
Top elevation
27.50
fmsl
Basin Bottom Dimensions
By;
Basin length
265.00
It
Basin width
8.00
If
Bottom Surface Area
2,248.00
ff�
Form SW401-Infiltration Basin-Rev.5 11Apr2011 Parts I. a II. Design Summary, Page 1 or 2
Additional Information
Maximum runoff to each inlet to the basin?
1.60
ac-in
OK
Length of vegetative filter for overflow
NA
It
OK
Distance to structure
400.00
It
OK
Distance from surface waters
1,000.00
ft
OK
Distance from water supply well(s)
NA
ft
OK
Separation from impervious soil layer
NA
It
OK
Naturally occuring soil above shwt
2.50
ft
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
NA
(Y or N)
OK
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
Y
(Y or N)
OK
Pretreatment device provided
itch basin and swale
Permit No.
(to be provided by DWO)
rFCEB
EIV E 2 2 2017
BY: - —
Form SW401-Infiltration Basin-Rev.5 1 tApr201 t Parts I. a II. Design Summary, Page 2 of 2
Permit
III. REQUIRED ITEMS.CHECKLIST
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials
Sheet No.
C3101-
1. Plans (1" - 50' or larger) of the entire site showing:
65161
- Design at ultimate build -out,
cc, (Ole
- Off -site drainage (if applicable),
COG
- Delineated drainage basins (include Rational C coefficient per basin),
C sf4
- Basin dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
CC _ (ad
- Boundaries of drainage easement.
2. Partial plan (1" = 30' or larger) and details for the infiltration basin showing:
sr¢
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filler, and
- Pretreatment device.
3. Section view of the infiltration basin (1" = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
�/34r
Cq-51 �
4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
44
1n.i- a5-
Sri V11erf.
5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
6. A construction sequence that shows how the inftlration basin will be protected from sediment until the
entire drainage area is stabilized.
p
V/� Z
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
9. A copy of the deed restrictions (if required).
JAPE 2 6 2017 ,
Q,
BY:
Form SW401-Infiltration Basin-Rev.4 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1
Permit Number< W I v7Vb
(roee ProvitlMby DWO)
®��
O WxTFgOG
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section Ilq and the ISM Agreement (Section IV)
I. PROJECT INFORMATION
Project name 2nd Radio On
Contact name
Phone number
Date
Drainage area number
II. DESIGN INFORMATION
Site Characteristics
Drainage area (A,)
228,690.00 ft' OK
Impervious area
174,240.00 0'
% Impervious (la
76.2% %
Design rainfall depth (RP)
1.50 in
Peak Flow Calculations
1-yr, 24-hr runoff depth
3.60
in
1-yr, 24hr intensity
0.15
inthr
Pre-0evelopment 1-yr, 24-0r runoff
0.36
Wised
Post -development 1-yr, 24hr runoff
0.29
helsec
PrelPost 1-yr, 24-fir peak control
-0.07
fl'Isec
Storage Volume
Design volume (WOV)
21,031.00 fis
Adjusted water quality volume (WOVE)
15,773.25 ft'
Volume contained in the sedimentation basin and on top of the sand filter
27,301.00 ffe
Top of sand filter/grate elevation
20.6
it amel
Weir elevation (between chambers)
18
itamsl
Maximum head on the sedimentation basin and sand filter (he,,, .)
2.60 ft
Average head on the sedimentation basin and sand filter (hrJ
1.30 it
Runoff Coefficient (Rv)
0.74 (unidess)
Type of Sand Filter
Open sand filter?
Y
Y or N
SHWT elevation
14.33 it amsl
Bottom of the sand filter elevation
16.50 it annual
Clearance (dslrvn)
5.17
Clcsedlprecast sand filter?
N
YorN
SHWT elevation
it amsl
Bottom of the sand filter elevation
it amsl
Clearance (d,.n)
If this is a closed, underground closed sand filter The clearance between the
surface of the sand filter and the bottom of the roof of the underground
it
structure (d,_)
0 1 C A R ii��.
9
a SEAL
039121
OK C.'
OK
OK
ECEIVE
FEB 14 2011
Form SW401-Sao FieerRev.5 200913e,117 Pans 1 and II. Project Design Summary, Page I of 2
t
Permit Number
ft. be provided by OWOJ
Sedimentation Basin
Surface area of sedimentation basin (A,)
411780 fit
vn wzuo I'll u.uut 111, 111 to w to w11will and icyoun, vulunar 11 a;1uP .11i
Sedimentation basinichamber depth
2.00 ft
Sand Filter
Surface area of sand filter (Ar)
4,117.80 ft'
""' ""tiu illlllli uut ill, li to w mucmcu m cullte1n me ltgmiEu vmmile a Ceui comet
Top of sand media filler bed elevation
18.00 fl amsl
Bottom of sand media filter bed/drain elevation
16.50 ft amsl
Depth of the sand media filter bed fitly)
1.50 ft
Coefficient of permeability, for the sand filter (k)
3.50 (fuday)
Outlet diameter
6.00 in
Outlet dischergelflowrate
0.14 floc/sac
Time to drain the sand filter (t)
25.02 hours
OK Submit drainage calculations.
Time to drain the sand filter (t)
1.04 days
Additional Information
Does volume in excess of the design volume bypass the sand filler?
Y Y or N
OK
Is an off -fine flowsplitting device used?
Y Y or N
OK
If draining to SA waters: Does volume in excess of the design volume flow
evenlytdistributed through a vegetated filter?
N Y or N
Excess volume must pass through filler.
What is the length of the vegetated filter?
ft
Does the design use a level spreader to evenly distribute flow?
Y or N
Is the BMP located at least 3Dft from surface waters (50ft if SA waters)?
Y Y or N
OK
If not a closed bottom, is BMP located at least 100ft from water supply wells?
Y or N
Are the vegetated side slopes equal to or less than 3.1
Y YorN
OK
Is the BMP located in a recorded drainage easement with a recorded access
NA Y or N
Insufficient ROW location.
easement to a public Right of Way (ROM?
What is the width of the sedimentation chamber/forebay (W,J?
10.00 ft
OK
What is the depth of sand over the outlet pipe (dpipe)?
1.00 ft
OK
ECEH @7 E
FEB 14 2017
BY:
Form SW401-Sam Filter Rev.5 2017 Paris 1 atM II. Project Design Summary, Page 2 of 2
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal
package will result in a request for additional information. This will delay final review and approval of the project. Initial
in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,
the agent may initial below. If a requirement has not been met, attach justification.
Initials Pagel Plan
Sheet No.
6 ZZ c5-101 - 1. Plans (1" - 50' or larger) of the entire site with labeled drainage area boundaries
CS- /°s
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
G6 Idl -
chamber,
G6 tro
- Maintenance access,
6-5o
- Flow splitting device,
- Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable), and
- Boundaries of drainage easement.
�?G Z C6-07
2. Plan details (1" = 30' or larger) for the sand filter showing:
G_ y(3
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber,
- Maintenance access,
- Flow splitting device,
- Vegetative filter strip dimensions and slope (if SA waters),
- Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable), and
- Boundaries of drainage easement.
GZ;t3 3. Section view of the sand filter (1" = 20' or larger) showing:
- Depth(s) of the sedimentation chamber and sand filter chamber,
- Depth of sand filter media,
- Connection between the sedimentation chamber and the sand filter chamber and weir elevation,
- SHWT elevation,
- Outlet pipe, and
- Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable).
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Sw gyI. f results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
PW-J-,,rfl investigation request form. County soil maps are not an acceptable source of soils information.
vZZ 5. Supporting calculations (including drainage calculations)
F 6. Signed and notarized operation and maintenance (0&M) agreement
4_ 7. A copy of the deed restrictions (if required).
FGY=1VE
JAN 2 6 23317 i
BY: ---
Form SW401-Sand Filter-Rev.5 2009Sept17 Part III, Page 1 of 1
15- In <RD
State Slormwater Management Systems Y�..a�.
Permit No. SW8 110906
2D Anglico and 2N OPS Complexes
Stormwater Permit No. SW8 110906
Onslow County
Designer's Certification — Sand Filter
1, _ Adam Pilarz , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe<eriodica eekly/full time) the
construction of the project,
P1280 2D Radio Battalion Complex Operations Consolidation
(Project)
for MCB Camp Lejeune (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 are a part of this Certification.
Noted deviations from approved plans and specifications: CgRO//�ii
oe'.Fessro.!y
2; ? 9'9
•a SEAL r•
047270
GINS
Signature
Registration Number 047270
Date 9 Yv1
ECEIVE
OCT 3 0 2019
BY
Paqe 11 of 12
c, �,
�;�,
�.,
u � e'sDS n, r� t ^ii ^�'�
0
4�
�rs
State Stormwater Management Systems
Permit No. SVJ8 110906
Certification Requirements.
X 1.
X 2.
X 3.
NIA 4
X 5
X g
NIA 7
X 8
The drainage area to the system contains approximately the permitted
acreage.
The drainage area to the systern contains no more than the permitted amount
of built -upon area.
All the built -upon area associated with the project is graded such that the runoff
drains to the system.
All roof drains are located such that the runoff is directed into the system
The sand filter elevations are per the approved plan.
The sand filter is located per the approved plans.
A trash rack is provided on the outleUbypass structure.
For open sand filters, all slopes are grassed with permanent vegetation.
X
9.
Vegetated slopes are no steeper than 3:1.
X
10.
The inlets are located per the approved plans and do not cause short-circuiting
of the system.
X
11.
The permitted amounts of surface area and/or volume have been provided.
NIA
12.
Required drawdown devices are correctly sized and located per the approved
plans.
X
13.
All required design depths are provided.
X
14.
All required parts of the system are provided, such as a vegetated shelf, a
forebay, and the vegetated filter.
X
15.
The required dimensions of the system are provided, per the approved plan.
cc:
NCDEQ-DEMLR Regional Office
ECEIVE
OCT 3 0 2019
BY•
Page 12 of 12
M
State Stormwater Management Systems
Permit No. SW8 110906 Mod.
2D Anglico and 2N OPS Complexes
Stormwater Permit No. SW8 110906
Onslow County
Designer's Certification
I, Howard Resnik , as a duly registered professional engineer In the State
of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the
construction of the project,
2D Anglico 2N OPS Complexes
(Project)
Commanding Officer, USMCB Camp
Lejeune, c/o Neal Paul, Deputy
for Puhl ; c wnrkc Off; rP (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:
Some storage volumes and permanent pool surface areas are slightly
below original design,values but are all above the calculated minimum
required and within 10% deviation from the design.
CAR
� ,
SS0•./�
Signature SEAL v 9
025483
NC PE # 025483 a r —
Registration Number 9/�9llf = '•
ti0 . G
Date 9/29/15 �, /y' INE.
�,�aR0lS.R�\
nff-GEWE
SEP 3 0 2015
BY:
Page 7 of 8
State Stormwater Management Systems
Permit No. SW8 110906 Mod.
Certification Requirements:
_1. The drainage area to the system contains approximately the permitted
acreage.
N,►f. 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.
�l L�8. All slopes are grassed with permanent vegetation.
k, It• 9. Vegetated slopes are no steeper than 3:1.
/ ,/j• 10, The inlets are located per the approved plans and do not cause short-circuiting
of the system.
1, 11. The permitted amounts of surface area and/or volume have been provided.
(,e 12. Required drawdown devices are correctly sized and located per the approved
plans.
t?_13. All required design depths are provided.
^i1,K14. All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
11,17, 15. The required system dimensions are provided per the approved plans.
4..,C. 16. All components of the stormwater BMP are located in either recorded common
areas, or recorded easements.
cc: NCDENR-DWQ Regional Office
SEP 3 0 2015
nv_ Y
Page 8 of 8