SW7050307_CURRENT PERMIT_20050907

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

WA7F9Q
�O w
c
=a
0 Y
September 6, 2005
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Mr. Danny Meadows, Director of Public Works
City of New Bern
PO Box 1129
New Bern, NC 28563-1129
Subject: Stormwater Permit No. SW7 050307
New Bern Public Works Facility
High Density Project
Craven County
Dear Mr Meadows:
Alan W. Klimek, P.E. Director
Division of Water Quality
E0IWIP,E
5EN 1 2005
DWQ-WARD
On behalf of the Washington Regional Office, the Wilmington Regional Office received a complete
Stormwater Management Permit Application for the New Bern Public Works Facility on August 31,
2005. Staff review of the plans and specifications has determined that the project, as proposed, will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW7 050307 dated September 6, 2005, for the construction of the subject project.
This permit shall be effective from the date of issuance until September 6, 2015, and shall be subject to
the conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within sixty (60) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Al
Hodge at [phone].
Since ely,
7
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlarl: S:IWQSISTORMWATIPERMIT1050307.sep05
cc: CAI Hodge, _Regional_Superv_ isor; SWP_S; WaRO
C:Ty�us Clayton, Jr., P.E.
Craven County Building Inspections
Linda Lewis
Washington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel-877.623-6748
Wilmington Regional Office Wilmington, NC 28405.3845 FAX [phone] Internet: h2oenr,state.ac.us
An Equal OpportunitylAffirmative Action Employer— 50% Recycledl10% Post Consumer Paper
NorthCarolina
,lUatura!!y

State Stormwater Management Systems
Permit No. SW7 050307
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Danny Meadows & the City of New Bern
Public Works Facility
1030 S. Glenburnie Road, New Bern, Craven County
FOR THE
construction, operation and maintenance of a wet detention pond and a bio-retention basin in
compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater
rules' and the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and considered
a part of this permit. '
This permit shall be effective from the date of issuance until September 6, 2015, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Sections 1.6 and 1.7on page 3 of this permit. The stormwater controls, a wet
detention fond and a bio-retention basin, have been designed to handle the runoff from
135,036 Wand 20,301 ft2 of built -upon area, respectively.
3. The overall project and each permitted drainage area will be limited to the amount of
built -upon area indicated in Sections 1.6 and 1.7 on page 3 of this permit, and per the
approved plans.
4. All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements. The final plats for the project will be recorded
showing all such required easements, in accordance with the approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW7 050307
L
7.
The following design criteria have been provided in the wet detention pond, and must be
maintained at design condition:
a.
Drainage Area, acres:
Onsite, ft2:
Offsite, ft2..
b.
Total Impervious Surfaces, ft2:
C.
Design Storm, inches:
d.
Pond Depth, feet:
e.
TSS removal efficiency:
f.
Permanent Pool Elevation, FMSL.-
9-
Permanent Pool Surface Area, ft2:
h.
Permitted Storage Volume, ft3:
i.
Temporary Storage Elevation, FMSL:
j.
Controlling Orifice:
k.
Permitted Forebay Volume, ft3:
I.
Receiving Stream/River Basin:
M.
Classification of Water Body:
7.7
335,412
0
135,036
1
4.5
90%
5.5
10,800
11,610
6.50
1.5" 0 pipe
5,200
Neuse River/ Neuse
"C Sw NSW"
The following design criteria have been provided in the Bio-retention basin and must be
maintained at design condition:
a.
Drainage Area, acres:
0.71
Onsite, ft2:
30,900
Offsite, ft2:
0
b.
Total impervious Surfaces, ft2:
20,301
C.
Design Storm, inches:
1
d.
Basin Depth, feet:
0.69
e.
TSS removal efficiency:
85%
f.
Basin Bottom Elevation, FMSL:
10.0
g.
Bottom Surface Area, ft2:
1,917
h.
Permitted Storage Volume, ft3:
2,395
i.
Temporary Storage Elevation, FMSL:
.10.69
j.
Total Number of Plants provided:
44
k.
Receiving Stream/River Basin:
Neuse River 1 Neuse
I.
Classification of Water Body:
"C Sw NSW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management systems shall be constructed in their entirety, vegetated
and operational for their intended uses prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. Decorative spray fountains will be allowed in the wet detention pond, subject to the
following criteria:
a. The fountain must draw its water from less than 2' below the permanent pool
surface.
b. 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.
c. The falling water from the fountain must be centered in the pond, away from the
shoreline.
d. The maximum horsepower for a fountain in the pond is 1 /6 horsepower.
4. The facilities shall be constructed as shown on the approved plans. This permit shall
become voidable unless the facilities are constructed in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
Page 3 of 7

M
State Stormwater Management Systems
Permit No. SW7 050307
5. The permittee shall, at all times, provide the operation and maintenance necessary to
assure each permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance Plan must be followed in its entirety and maintenance must
occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of bio-retention basins, pond slopes and the vegetated
filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, overflow
structure, flow spreader, catch basins and piping.
g. Access to the outlet and overflow structures must be available at all times.
6. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has been
installed in accordance with this permit, the approved plans and specifications, and other
supporting documentation. Any deviations from the approved plans and specifications
must be noted on the Certification. A modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be restored to
design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate easements at all
times.
10. The permittee shall submit to the Director and shall have received approval for revised
plans, specifications, and calculations prior to construction, for any modification to the
approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the stormwater
management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d: Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area. The
project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit was
sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved
plan.
11. The permittee shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of ten years from the date of the completion of construction.
13. The Director may notify the permittee when the permitted site does not meet one or more
of the minimum requirements of the permit. Within the time frame specified in the notice,
the permittee shall submit a written time schedule to the Director for modifying the site to
meet minimum requirements. The permittee shall provide copies of revised plans and
certification in writing to the Director that the changes have been made.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW7 050307
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the
event of a change of ownership, or a name change, the permittee must submit a formal
permit transfer request to the Division of Water Quality, accompanied by a completed
name/ownership change form, documentation from the parties involved, and other
supporting materials as may be appropriate. The approval of this request will be
considered on its merits and may or may not be approved. The permittee is responsible
for compliance with all permit conditions until such time as the Division approves the
transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address changes
within 30 days.
Permit issued this the 6th day of September 2005.
NORTH C OLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

ROY COOPER
Covernor
MICHAEL S. REGAN
Secretary
WILLIAM E. (TOBY) VINSON, JR
Interim Direrfor
Mr. Matthew Montayne,
City of New Bern
P.O. Box 1129
New Bern, NC 28562
Dear Mr. Montayne:
NORTH CAROLINA
Environmental Quality
January 7, 2019
Director of Public Works
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7050307
New Bern Public Works Facility
Craven County
'4 � C/
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7050307 for a stormwater treatment system consisting of a wet
detention pond and a bioretention system serving the New Bern Public Works facility
located at 1030 S. Glenburnie Road in New Bern, NC expires on September 6, 2019.
This is a reminder that permit renewal applications are due 180 days prior to expiration.
We do not have a record of receiving a renewal application.
.Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Permit application forms for renewal can be found on our website at:
https:/:/Ideq.nc.gov/about/divisions/energy-minet-al-land-resources/energ-y-mineral-land-
rulesJstormwater-program/post-construction. North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit. Failure to maintain a permit subjects the owner to assessment of civil penalties.
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like I can e-mail you a copy of the
renewal application. You can request a copy by e-mailing me at
[e-mail].
Sincerely,
Ro er K. Thorpe
Environmental Engineer
Olm' CN1CT.'®��� Q
25
NN ,
of Fm��rtw�+l Q u ft
North Carolina Department of Environmental Quality 1 Diviston of Energy. Mineral and Land Resourres
Washington Regional ice 1 943 Washington Square Mall 1 Washington, North Carolina 27881,
752,946,6481

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
September 6, 2005
Mr. Danny Meadows, Director of Public Works
City of New Bern
PO Box 1129
New Bern, NC 28563-1129
Subject: Stormwater Permit No. SW7 050307
New Bern Public Works Facility
High Density Project
Craven County
Dear Mr Meadows:
Alan W. Klimek, P.E. Director
Division of Water Quality
RECEIVED
SEP - 7 2005
DWQ-WARD
On behalf of the Washington Regional Office, the Wilmington Regional Office received a complete
Stormwater Management Permit Application for the New Bern Public Works Facility on August 31,
2005. Staff review of the plans and specifications has determined that the project, as proposed, will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW7 050307 dated September 6, 2005, for the construction of the subject project.
This permit shall be effective from the date of issuance until September 6, 2015, and shall be subject to
the conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within sixty (60) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Al
Hodge at [phone].
Sincerely,
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlarl: S:IWQSISTORMWATIPERMIT1050307.sep05
cc: AI Hodge, Regional Supervisor, SWPS, WaRO
C.Tyrus Clayton, Jr., P.E.
Craven County Building Inspections
Linda Lewis
tW5`§hingt6n-Re7gidnal_Offic9
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Service 1-877-623-6748
Wilmington Regional Office Wilmington, NC 28405-3645 FAX [phone] Internet: h2o.enr.state.ncus One
NorthCarollina
An Equal opportunitylAffirmatrve Action Employer— 50% Recyc1ed110°% Post Consumer Paper Naturally

State Stormwater Management Systems
Permit No. SW7 050307
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Danny Meadows & the City of New Bern
Public Works Facility
1030 S. Glenburnie Road, New Bern, Craven County
FOR THE
construction, operation and maintenance of a wet detention pond and a bio-retention basin in
compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater
rules') and the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and considered
a part of this permit.
This permit shall be effective from the date of issuance until September 6, 2015, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Sections 1.6 and 1.7on page 3 of this permit. The stormwater controls, a wet
detention pond and a bio-retention basin, have been designed to handle the runoff from
135,036 ft and 20,301 ft2 of built -upon area, respectively.
3. The overall project and each permitted drainage area will be limited to the amount of
built -upon area indicated in Sections 1.6 and 1.7 on page 3 of this permit, and per the
approved plans.
4. All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements. The final plats for the project will be recorded
showing all such required easements, in accordance with the approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW7 050307
3
7
The following design criteria have been provided in the wet detention pond, and must be
maintained at design condition:
a. Drainage Area, acres:
Onsite, ft2:
Offsite, ftz:
b. Total Impervious Surfaces, ft2:
C. Design Storm, inches:
d: Pond Depth, feet:
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSL:
g. Permanent Pool Surface Area, ft2:
h. Permitted Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL
j. Controlling Orifice:
k. Permitted Forebay Volume, ft3:
1. Receiving Stream/River Basin:
M. Classification of Water Body:
7.7
335,412
0
135,036
1
4.5
90%
5.5
10,800
11,610
6.50
1.5" 0 pipe
5,200
Neuse River/ Neuse
"C Sw NSW"
The following design criteria have been provided in the Bio-retention basin and must be
maintained at design condition:
a. Drainage Area, acres:
Onsite, ft2:
Offsite, ft2:
b. Total Impervious Surfaces, ft2.
C. Design Storm, Inches:
d. Basin Depth, feet:
e. TSS removal efficiency:
f. Basin Bottom Elevation FMSL:
g. Bottom Surface Area, ft :
h. Permitted Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL:
j. Total Number of Plants provided:
k. Receiving Stream/River Basin:
1. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
0.71
30,900
0
20,301
1
0.69
85%
10.0
1,917
2,395
10.69
44
Neuse River 1 Neuse
"C Sw NSW"
The stormwater management systems shall be constructed in their entirety, vegetated
and operational for their intended uses prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. Decorative spray fountains will be allowed in the wet detention pond, subject to the
following criteria:
a. The fountain must draw its water from less than 2' below the permanent pool
surface.
b. 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.
c. The falling water from the fountain must be centered in the pond, away from the
shoreline.
d. The maximum horsepower for a fountain in the pond is 1/6 horsepower.
4. The facilities shall be constructed as shown on the approved plans. This permit shall
become voidable unless the facilities are.constructed in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW7 050307
The permittee shall, at all times, provide the operation and maintenance necessary to
assure each permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance Plan must be followed in its entirety and maintenance must
occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of bio-retention basins, pond slopes and the vegetated
filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, overflow
structure, flow spreader, catch basins and `piping.
g. Access to the outlet and overflow structures must be available at all times.
6. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has been
installed in accordance with this permit, the approved plans and specifications, and other
supporting documentation. Any deviations from the approved plans and specifications
must be noted on the Certification. A modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be restored to
design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate easements at all
times.
10. The permittee shall submit to the Director and shall have received approval for revised
plans, specifications, and calculations prior to construction, for any modification to the
approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the stormwater
management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area. The
project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit was
sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved
plan.
11. The permittee shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of ten years from the date of the completion of construction.
13. The Director may notify the permittee when the permitted site does not meet one or more
of the minimum requirements of the permit. Within the time frame specified in the notice,
the permittee shall submit a written time schedule to the Director for modifying the site to
meet minimum requirements. The permittee shall provide copies of revised plans and
certification in writing to the Director that the changes have been made.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW7 050307
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the
event of a change of ownership, or a name change, the permittee must submit a formal
permit transfer request to the Division of Water Quality, accompanied by a completed
name/ownership change form, documentation from the parties involved, and other
supporting materials as may be appropriate. The approval of this request will be
considered on its merits and may or may not be approved. The permittee is responsible
for compliance with all permit conditions until such time as the Division approves the
transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address changes
within 30 days.
Permit issued this the 6th day of September 2005.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW7 050307
New Bern Public Works Faciltiy
Stormwater Permit No. SW8 050307
Craven County
Designer's Certification
1, , as a duly registered' in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW7 050307
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/bypass 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/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. Required drawdown devices are correctly sized 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.
cc: NCDENR-DWQ Regional Office
Craven County Building Inspections
Page 7 of 7

OFFICE,USE ONLY
Date Received
Fee Paid
Permit Number
�3-4_=5 r1 . 2s-2r.
4 0` t�r 1838
- <3wl 0 503v-1
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
City of New Bern
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Danny Meadows, Director of Public Works
3. Mailing Address for person listed in item 2 above:
PO Box 1129
City: New Bern State: NC Zip: 28563-1129
Telephone Number: ( 252 ) 636-4025
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Public Works Facility Site Worm
5. Location of Project (street address):
1030 S. Glenburnie Road
City: New Bern County: Craven
6. Directions to project (from nearest major intersection):
From Glenburnie Rd. exit of US 70, take Glenburnie Rd. North, cross Neuse Blvd., and travel
approximately 0.3 miles. Site is on the left behind the power substation.
7. Latitude: 35" 7.699'
Longitude: 77° 1.151'
8. Contact person who can answer questions about the project:
Name: C. T. Clayton, Sr., RE. Telephone Number:
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal
of project
252 ) 672-0304
Modification
Form SWU-101 Version 399 Pagel of4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density __XHigh Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major X Sedimentation/Erosion Control _404/401 Permit X NPDES Stormwater
Information on required state permits can be. obtained by contacting the Customer Service Center at .
1-877-623-6748,
III. - PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Most of the site's Stormwater will be collected into a wet detention basin. One parking lot will drain into a bio-
retention area, with any overflow diverted into the wet detention basin. See attached narrative for more detail.
2. Stormwater runoff from this project drains to the Neuse . River basin.
3. Total Project Area: 73 acres 4. Project Built Upon Area: 40 %
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheen with the information for each area provided in the same format as below.
/ (
Basin Information
Drainage Area I
Drainage Area 2
Receiving Stream Name
Neuse River
Receiving Stream Class
SC;Sw,NSW
5C 560 0 S W
Drainage Area
7.7 acres (335,412 sf)
0.71 acres (30,900 sf)
Existing Impervious' Area
0 acres
0 acres
Proposed Impervious*Area
3.1 acres 135,036 s
0.467 acres 20,301 s
% Impervious` Area (total)
40
bG
Impervious* Surface Area
Drainage Area I
Drainage Area 2
On -site Buildings
0.59 acres (25,700 s
On -site Streets
0.41 acres 17 860 5
On -site Parking
1.80 acres (78,408 so
0.467 acres (20,301 s
On -site Sidewalks
Other on -site
0.30 acres (13,068 s
Off -site
.,
Total: 3.1 acres 135.036 so
Total: Q.467 acres 20,301 s
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form S WU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENT'S
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items fisted below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to iNCDEINR)
• Detailed narrative description of stormwater t.reatment/managernent
• Two copies of plans and specifications, including:
Development/Project name
Engineer and firm
Legend
- North arrow
- Scale
Revision number & date
Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
Details of roads, drainage features, collection systems, and stormwater control rneasures
Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): C. T. Clayton, Sr., P.E., Inc.
Mailing Address: PO Box 12794
City: New Bern
State: NC
Zip: 28561
Phone: ( 252 ) 672-0304 Fax: [phone]
VII1. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Inforrnaiion, ;tern 2) Danny Meadows
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protecti ovenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2 .1000. zl��
Signatu
Date:-, 3_1 _ C7S--
Form S1A'U-101 Version 3,99 Page 4 of 4

Permit No. 5W 4 0 50JU'�"
(to be provided by DW&
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan „Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION•
Project Name: _Public Works Facility
Contact Person: Danny Meadows Phone Number:636-4025
For projects with multiple basins, specify which basin this worksheet applies to: NIA D
elevations
Basin Bottom Elevation
1
ft.
(floor of the basin)
Permanent Pool Elevation
5.5
ft.
(elevation of the orifice)
Temporary Pool Elevation
6.5
ft.
(elevation of the discharge structure overflow)
areas
�,
Permanent Pool Surface Area __42,-490
sq. ft.
(water surface area at the orifice elevation)
Drainage Area
7.7
ac.
(on -.rite and off -site drainage to the basin)
Impervious Area
3A
ac.
(on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA 1
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
25,600 cu. ft. (combined volume of main basin and forebay)
11,600 cu. ft. (volume detained above the permanent pool)
5,200 cu. ft. (approximately 20% of total volume)
31
1.5
1
90
(surface area to drainage area ratio from DWQ table)
in. (2 to S day temporary pool draw -down requirea)
in.
% (minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of 4

Footnotes:
t When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing; should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
901%, TSS removal. The NCDI:NR BMP manual provides design tables for both 85` , TSS removal and 90%'1'SS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stonnwater Best Management Practices Manual
(N.C. Department of Environment, Flealth and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form; the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
L?C ( a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
C W4,, c. The temporary pool controls runoff from the design storm event.
C 17 d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
CVf. The basin length to width ratio is (Treater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
C C'�L h. A submer(Ted and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
-ri i. Vegetative cover above the permanent pool elevation is specified.
C' 7 j. A trash rack or similar device is provided for both the overflow and orifice.
$ Owner as Need&) k. A recorded drainage casement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
C m. A mechanism is specified which will drain the basin for maintenance or an emergency.
Ill. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin; pretreatment includin(T forebays and the
vegetated filter if one is provided.
This system (check one) 0 does a does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0.does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of

Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall eveni and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
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 3.4 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 3.4 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 5.5
Sediment Re oval El. 2.'1 � 7S o
___-_--__-__ Sediment Removal Elevation 2.1 75%
Bottom Ele ation 1
Bottom Elevation 1 25%
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of 4

All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the perfonnance of the seven
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: Danny Meadows
Title: Director of Public Works
Address: PO Box 1129, New Bern, NC 28563-1129
Phon
Sign
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.
1, /2,qN/( �,! /Ye-, )-k; e-17 , a Notary Public for the State of',/V412 f,4/ �',q�,..a
County of e ', ,gyZH do hereby certify that
personally appeared before me this day of and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires 9,/J �y
Form SWU-102 Rev 3.99 Page 4 of4

RECEIVED
An
MAINTENANCE MAR 0 4 2005
nw@
Construction Phase
PR03 # 5w-qoSa3y�-
The Owner shall ensure that all erosion and sediment control measures are
installed prior to the start of construction. Their proper operation shall be checked
not less than once every week during construction, and following every runoff -
producing rainfall. All deficiencies shall be repaired immediately and in
accordance with the permitted Erosion and Sediment Control plan.
The stormwater management system shall be constructed in its entirety, vegetated,
and made operational for its intended use prior to the construction of any
impervious surfaces other than roads.
At least weekly during, and at the close of, the construction phase of the project,
the bioretention area and wet detention basin shall be inspected, repaired as
needed, cleaned of sediment and trash, and otherwise restored to the design
grades. The inspections shall include the following:
• Check the embankments for erosion damage, (i.e. loss of vegetative cover,
piping, sloughing, settlement)
• Check the bioretention area overflow drains and their grates and the wet
detention basin outlet structure for proper function, damage and/or
blockages.
• Check the areas for accumulated sediment trash and other debris.
• Check bioretention area plants to access overall health and inspect for
damage.
• Check the wet detention basin fence for accumulated trash and damage.
Any damages discovered during an inspection shall be repaired immediately.
Resod/reseed/replant bare areas as needed to maintain specified vegetative
coverage. Repair all damaged plants If possible, and replace any plants that are
dead or cannot be repaired. Regrading or repairing of the side slopes shall include
resodding, trimming and/or mowing, as needed. All necessary repairs shall be
performed prior to close-out of the construction phase.
Routine Maintenance
The Owner shall maintain a copy of the approved stormwater drawings and
specifications for a period equal to the life of the permit unless otherwise required
by the permit
The Owner shall properly maintain and operate, or provide for the maintenance
and operation of, the approved stormwater management system at all times to
assure the optimum working order, performance and efficiency of the system.
City of New Bern Public Works Building February 2005
Stormwater Management Plan CTC #f 0023028
Page 16 of 20

If there is a failure of this system to perform satisfactorily, including the creation
of nuisance conditions, the Owner shall take corrective actions immediately,
including those as may be required by the Division of Water Quality or City of
New Bern, such as the construction of additional or replacement stormwater
management system.
The Owner shall maintain records of all maintenance activities and these shall be
made available, upon request, to authorized personnel of the Division of Water
Quality. These records shall indicate the date of the activity, the name of the
person performing the work and what actions were taken
Mowing
The side -slopes, embankments, buffer areas, and other grassed areas shall
be mowed as required to maintain a maximum height of six inches during
the main growing season and at least two other times during the year to
prevent woody growth and to control weeds.
Inspections
The Owner shall inspect the stormwater management system after every
significant runoff -producing rainfall event and at least;
Monthly for (but not limited to) the following:
sediment accumulation; trash accumulation; erosion, subsidence,
cracking or bare areas on embankments or side slopes; obstructions or
clogging of the stormwater pipe network, bioretention area overflow
drains and their grates and/or the wet detention basin outlet structure
and discharge pipe outlet.
Quarterly in addition to the monthly requirements for:
permanent pool depth; bioretention area plant health; any dead or
damaged plants; for the condition of all curb outlets, drop inlets,
swales, piping, rip -rap, and ditches.
Semi-annually in addition to the quarterly requirements:
to ensure the intended function is still provided; to determine the rate
of sediment accumulation; to check the condition of the fence; for
any modifications which have occurred to the contributing watershed
(beyond those proposed) that will increase the amount of runoff
directed to the system
Inspections shall be carried out with the approved stormwater plans
(specifications and drawings)
Occasionally inspections shall be conducted during wet weather or times
of extreme weather to determine if the system is functioning properly and
if not, to identify problem areas.
City of New Bern Public Works Building February 2005
Stormwater Management Plan CTC # 0023028
Page 17 of 20

Deficiencies identified during inspections shall be corrected immediately.
Erosion Control
Corrective measures and repairs shall be done immediately to the project
area and stormwater management system where settlement, sloughing,
and/or erosion have occurred. Resod, reseed or replant as necessary to
maintain good vegetative cover. All repairs shall be done in accordance
with the approved erosion and sediment control and stormwater
management plans.
Sediment Removal
Sediment removal from the wet detention basin shall be performed when
the basin's permanent pool is reduced to 75% of the original design depth
unless otherwise specified by the permitting agencies.
The measuring device used to determine the wet detention basin's
permanent pool depth shall be such that it will give an accurate depth
reading and not readily penetrate into accumulated sediments.
• When the permanent pool depth reads 41 inches (3.4 feet) in the
main pool, the sediment shall be removed.
• When the permanent pool depth reads 41 Inches (3.4 feet) in the
forebay, the sediment shall be removed
Sediment removal from other portions of the stormwater system shall
occur when accumulations affect system function and/or designed grades.
Bioretention area subsurface drains shall be inspected and/or cleaned out
when stormwater runoff remains ponded in excess of 48 hours after a
typical rain event. The specified planting soil should typically infiltrate a
6-inch deep ponding volume within 6 to 12 hours time, maximum.
The Owner shall ensure that removed sediment is disposed of in an
appropriate manner and that it is handled in a manner that will not
adversely impact water quality (i.e., stockpiling near a wet detention basin.
discharging into or near a stream, wetlands. etc.) and in accordance with
all local, state, and federal regulations.
Debris and litter Removal
Debris and litter removal from the bioretention areas and wet detention
basin shall be included as a part of the inspection process and periodic
mowing operations. Particular attention shall be paid to areas around
drainage structures where debris may cause clogging/obstructions- All
City of New Bern Public Works Building February 2005
Stormwater Management Plan CTC # 0023028
Page 18 of 20

C.
I]
trash and debris removed shall be disposed of according to local, state, and
federal regulations.
Non -Routine Maintenance
Emergency Draining
The Owner shall have a pump(s) available that is (are) capable of draining
the wet detention basin for maintenance activities in the event that the
decant structure becomes dogged or for other emergency situations
If the basin must be drained in this manner, then the flushing of sediment
through the outlet shall be minimized to the maximum extent practical.
Structure Repairs and Replacement
The Owner shall replace all deteriorated inlet/outlet works when
deterioration from use or age causes them to fail and/or function
improperly.
Maintenance Cost
The Owner shall be responsible for all costs associated with the maintenance
(routine or otherwise) and operation of the stormwater retention pond/wet
detention basin system.
City of New Bern Public Works Building February 2005
Stormwater Management Plan CTC # 0023028
Page 19 of 20

I acknowledge and agree by my signature below that the City of New Bern is
responsible for all maintenance procedures listed above, and all incurred costs of
construction and annual maintenance. I agree to notify NCDLNR, Division of
Water Quality of any problems with the system or prior to any changes that will
require a modification to the permit
Name of Owner/Responsible Party: The City of New Bern
Address: PO Box 1129
New Bern, NC 28563-1129
Phone Number. 252-636-4025
Name & Title: Mr. Danny Meadows
(,--r' ector o • ' •Work;
,"
Signature
Date: 3 - i -y �—
Notary Public: 1,/7 a Notary Public for the State of North Carolina,
County of Craven, N hereby certify that A �r-„„� ��}� JeL _c
personally appeared before nee this day of
�/y� UQ - ",l , 2005, and acknowledged the due execution
of the foregoing stormwater system maintenance requirements. Witness
my hand and official sea].
My Commission expires: — ,i - -D
RECEIVED
MAR 0 4 2005
DWQ
PROM # 2k)201 5C)30'
City of New Bern Public Works Building February 2005
Stonnwater Management Plan CTC # 0023028
Page 20 of 20

Bioretention Basin Design File Name: S:IWQSIBIORETENTIONISW7050307.WK1
Project Number: SW7 SW7050307 Date 5-Aug-2005
Project Name: New Bern Public Works Facility
Receiving Stream: Neuse River Classification: SC Sw NSW
Drainage Basin: Neuse Index Number:
Minimum Surface Area
c=.95 for BUA, c=.25 for grass
Minimum
Provided
Basin # DA
BUA Sum C x A
BR Area
Area
1 30900
20301 20920.65
1464
2390 sf
2
0.00
0
sf
3
0.00
0
sf
4
0.00
0
sf
5
0.00
0
sf
Volume Reauired
Percent
Required
Basin #
BUA
Design Storm Rv Value
Volume
1
65.70%
1 0.64
1651
2
#DIV/O!
#DIVIO!
#DIVIO!
3
#DIVIO!
#DIVIO!
#DIVIO!
4
#DIVIO!
#DIVIO!
#DIVIO!
5
#DIVIO!
#DIVIO!
#DIVIO!
Volume Provided
Bottom
Bottom Top Top Volume Prov.
Req, Vol. Met
Basin # Area
Elevation Area Elevation @Top
@ elev.
1 1917
10.000 2873.00 11.00 2395
10.69 ft
2
0
#DIVIO! ft
3
0
#DIVIO! ft
4
0
#DIVIO! ft
5
0
#DIVIO! ft
P3antina Guidelines
Basin #
Min. # Plants
Ratio of
Prov. # Trees Prov. # Shrubs Shrubs/Trees
1
44
18 60 3.33
(must be 2-3)
2
0
#DIVIO!
(must be 2-3)
3
0
#DIVIO!
(must be 2-3)
4
0
#DIVIO!
(must be 2-3)
5
0
#DIVIO!
(must be 2-3)
Comments

WET DETENTION POND ANALYSIS
FILE NAME
PROJECT#: SW7 SW7050307
PROJECT NAME: Public Works Facility
S:IWQSIPONDISW7050307.WK1
REVIEWER:
DATE: 29-Aug-05
Receiving Stream: Neuse River Class: SC Sw NSW
Drainage Basin: Neuse Index No.
Site Area 7.70 acres
Drainage Area � . 3354120ii3 ; square feet Area in Acres 7.70
IMPERVIOUS AREAS
Buildings
Parking
Other
TOTAL
SURFACE AREA CALCULATION
25700.00 square feet
96270.00 square feet
1u068.00 square feet
square feet
square feet
square feet
square feet
35p3`.00', square feet
Rational C
Rational Cc= 0.12
% IMPERVIOUS 40.26'=%o SAIDA Ratio 3.12%
Des. Depth 4.5 Req. SA 104665 sf
TSS: 90 Prov. SA r10800 sf
VOLUME CALCULATION
' place a " 1 " in the box if Rational is used
Rational ?"
FOREBAY
Des. Storm
100'i inches
.........:.......... .
Perm. Pool Volume =
24622
Rv=
0.412
Req. Forebay Volume=
4924.4
Bottom
'I msl
Provided Volume=
5061.00
Perm'. Pool
" 5'5(t;' msl
Percent=
!i 2�'16�roi
Design Pool 6.5 msl
Storage met @elev
6.46 msl
Elevation Area
Inc. Vol.
Acc. Vol.
Req. Volume
WN 15251 cf
5.50 10800.00
0.00
Vol. Prov. at DP
11'6'10;
6.00 11618.00
5604.50
5604.50
6.50 , 12402.00
6005.00
11609.50
ORIFICE CALCULATION
Avg. Head =
0.47 ft
Q2 Area =
2.91
sq. inches
Flow Q2, cfs
0,06670 cfs
Q5 Area =
1.17
sq. inches
Flow Q5, cfs
0.02668 cfs
Orifice Area
1.77
sq. inches
No. of Orifices
z. !. .'1.`
Q=
0.040
cfs
Diameter, inches " 1'`50 i weir H x W in x
u in
Drawdown = „ ,,'; 3 3 days Surface Area@DP = 12436 sq. ft.
Falling Head Drawdown = 4.6 days
C= 3.311666667 L= -0.094
COMMENTS
Surface Area & Volume are within Design Guidelines. Orifice is too small -based on an incorrect head
of 712 (Le, the consultant used the head associated with a temporary pool elevation of 7, whereas the
details and supplement indicate that the temporary pool elevation is 6.5.