HomeMy WebLinkAboutSW6120706_CURRENT PERMIT_20120822STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 7�JiD
DOC TYPE
CURRENT PERMIT
r APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
�/9�� (ienl�
YYYYMMDD
®ENR-FRCS
AUG 2 2 2012
NCDENR MID
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Vllakild, PE Dee Freeman
Governor Director Secretary
August 20, 2012
Mr. David Heins, Environmental Division Chief (DPW)
Directorate of Public Works (DPW)
2175 Reilly Road Stop A
Fort Bragg, NC 28310
Subject: Stormwater Permit No. SW6120706
SOF Training Facility (Pope)
High Density Commercial Wet Pond Project
Henderson County
Dear Mr. Heins:
The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for SOF
Training Facility (Pope) on August 15, 2012 after requesting more information on August 3, 2012. 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 and Session Law 2006-246. We are
forwarding Permit No. SW6120706, dated August 20, 2012, for the construction, operation and
maintenance of the subject project and the stormwater BMPs.
This permit shall be effective from the date of issuance until August 19, 2020 and shall be subject to the
conditions and limitations as specified therein, and does not supersede any other agency permit that may
be required. Please pay special attention to the conditions listed in this permit regarding the Operation and
Maintenance of the BMP(s), recordation of deed restrictions, procedure's 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 follow the procedures
for transfer of 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 upon written request within thirty (30) days following receipt of this permit.
This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC
27611-7447. Unless such demands are made this permit shall be final and binding.
This project will be kept on file at the Fayetteville Regional Office. If you have any questions, or need
additional information concerning this matter, please contact Brian Lowther at (919) 807-6368; or
brian.lowther@ncdenr.gov.
Sincerely,
for Charles Wakild, PE
cc: -Fayetteville_RegionalOffice
SW6120706 File
ec: Don Higgins — Day & Zimmerman
Wetlands and Stormwater Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury SI Raleigh, North Carolina 27504
Phone: 919-807-63001 FAX: 919-607.6494
.Internet: www,ncwaterquality.org
NorthCarolina
Naturally
An Equal Opponunily 1 Affirmative Action Employer
State Stormwater Permit
Permit No.SW6120706
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
Directorate of Public Works (DPW)
SOF Training Facility (Pope)
Booster Street, Ft Bragg, Cumberland County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the
"stormwater rules`) and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until April 19, 2020, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 of this permit. The stormwater control has been
designed to handle the runoff from 85,748 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. Alf stormwater collection and -treatment systems musfbe 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 1 of 6
State Stormwater Permit
Permit No.SW6120706
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, aps: 5.4
Onsite, ft : 174,250
Offsite, ft2: 60,431
b. Total Impervious Surfaces, ft2:
Buildings ft
Roads/Parking, ft2:
Other, ft2,
Offsite, ft
C. Pond Depth, feet:
d. TSS removal efficiency:
e. Design Storm:
f. Permanent Pool Elevation, FMS�:
g. Permitted Surface Area @PP ft
h: Permitted Storage Volume, ft
i. Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permanent Pool Volume, ft3
I. Forebay Volume, ft3:
m. Receiving Stream/River Basin:
n. Stream Index Number:
o. Classification of Water Body
II. SCHEDULE OF COMPLIANCE
85,748
14,252
30,042
3,6577 (sidewalks)
3.0
90%
1.0 inch
175.9
11,000
7,500 at temporary pool
176.40
1.5"0 pipe
25,225
5,500
Little River (Lower Little River)/ Cape
Fear
18-23-(24)
,1C,o
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance-of_all_slopes_in_accordance_with_approved_pians_and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
Page 2 of 6
State Stormwater Permit
Permit No.SW6120706 '
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.
7. if the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
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 completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
Page 3 of 6
State Stormwater Permit
Permit No.SW6120706
3. 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.
4. 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.
5. 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.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. 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.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. 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
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 21-1.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name,, ownership or mailing
address changes at least 30 days prior to making such changes.
12. The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 20t" day of August, 2012.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�/ram
for Charles Wakild, PE, Director
-Division-of-Water-Quality — By Authority of the Environmental Management Commission
Page 4 of 6
State Stormwater Permit
Permit No.SW6120706
SOF Training Facility (Pope)
Stormwater Permit No. SW6120706
Cumberland 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,
SOF Training Facility (Pope)
(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 5 of 6
State Stormwater Permit ,
Permit No.SW6120706
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.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel-Building-Suite 714
Fayetteville, NC 28301
Page 6 of 6
Ail
NCDENR D
North Carolina Department of Environment and Natural Resources�J
Division of Water Quality bkP Z 4 2012
Beverly Eaves Perdue Charles Wakild, PE MY
Freeman
Governor Director Secretary
August 20, 2012
Mr. David Heins, Environmental Division Chief (DPW)
Directorate of Public Works (DPW)
2175 Reilly Road Stop A
Fort Bragg, NC 28310
Subject: Stormwater Permit No. SW6120706
SOF Training Facility (Pope)
High Density Commercial Wet Pond Project
H�
County
�
Dear Mr. Heins:
The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for SOF
Training Facility (Pope) on August 15, 2012 after requesting more information on August 3, 2012. 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 and Session Law 2006-246. We are
forwarding Permit No. SW6120706, dated August 20, 2012, for the construction, operation and
maintenance of the subject project and the stormwater BMPs.
This permit shall be effective from the date of issuance until August 19, 2020 and shall be subject to the
conditions and limitations as specified therein, and does not supersede any other agency permit that may
be required. 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 follow the procedures
for transfer of 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 upon written request within thirty (30) days following receipt of this permit.
This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC
27611-7447. Unless such demands are made this permit shall be final and binding.
This project will be kept on file at the Fayetteville Regional Office. If you have any questions, or need
additional information concerning this matter, please contact Brian Lowther at (919) 807-6368; or
brian.lowther@ncdenr.gov.
Sincerely,
fbr Charles Wakild, PE
CC' Fayetteville Regional Office
SW6120706 File
ec: Don Higgins — Day & Zimmerman
Wetlands and Storrnwaler Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location; 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone. 919-807-63001 FAX: 919-807-6494
Internet: www.ncwaterquality.org
An Equa Opportunity 1 Alirmative Action Employer
NorthCarohna
Natumll#
State Stormwater Permit
Permit No.SW6120706
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
Directorate of Public Works (DPW)
SOF Training Facility (Pope)
Booster Street, Ft Bragg, Cumberland County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until April 19, 2020, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 of this permit. The stormwater control has been
designed to handle the runoff from 85,748 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per 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 1 of 6
State Stormwater Permit
Permit No.SW6120706 -
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, aSres: 5.4
Onsite, ft : 174,250
Offsite, ft2: 60,431
b. Total Impervioys Surfaces, ft2:
Buildings ft :
Roads/Parking, ft2:
Other, ft2.
Offsite, ft
C. Pond Depth, feet:
d. TSS removal efficiency:
e. Design Storm:
f. Permanent Pool Elevation, FMS�:
g. Permitted Surface Area @PP ft .
h. Permitted Storage Volume, ftl:
i. Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permanent Pool Volume, ft3:
I. Forebay Volume, ft3:
m. Receiving Stream/River Basin:
n. Stream Index Number;
o. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
85,748
14,252
30,042
3,6577 (sidewalks)
3.0
90%
1.0 inch
175.9
11,000
7,500 at temporary pool
176.40
1.5" O pipe
25,225
5,500
Little River (Lower Little River)/ Cape
Fear
18-23-(24)
„C,1
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
Page 2 of 6
State Stormwater Permit
Permit No.SW6120706
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.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction:
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made. ,
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 completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
Page 3 of 6
State Stormwater Permit
Permit No.SW6120706
3. 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.
4. 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.
5. 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.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. 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.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. 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
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12.The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 20th day of August, 2012.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Jor unarles WaKiia, Fit:, virector
Division of Water Quality
By Authority of the. Environmental Management Commission
Page 4 of 6
State Stormwater Permit
Permit No.SW6120706
SOF Training Facility (Pope)
Stormwater Permit No. SW6120706
Cumberland Countv
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
SOF Training Facility (Pope)
(Project)
for
best of my abilities, due c
construction such that the
(Project Owner) hereby state that, to the
re and diligence was used in the observation of the project
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
Pabe 5 of 6
State Stormwater Permit
Permit No.SW6120706
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.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building Suite 714
Fayetteville, NC 28301
Page 6 of 6
a
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman
Governor Director FIECEIVED Secretary
August 3, 2012 AUG - l 2012
Mr. Eon Higgins Day Et Zimmerman DENR—FAYETTEVILLE REGIONAL OFFICE
125 The Parkway, Suite 400
Greenville, NC 29615
Subject: Request for Additional Information
Stormwater Project No. SW6120706
SOF Training Facility (Pope)
Cumberland County
Dear Mr. Higgins:
The Division of Water Quality Central Office received a request to modify the Stormwater Management Permit for the subject
project on July 27, 2012. A preliminary review of that information has determined that the application is not complete. The
following information is needed to continue the stormwater review:
1. The permanent pool (PP) elevation should be within 6 inches of the seasonal high water table (SHWT). The supplement
indicates the PP is lower than SHWT white the plans indicate the PP is able the SHWT. Please revise the design and fix
any inconsistencies. Also, I could not locate the SHWT in the soils report.
2. The length of the flowpath to width ratio needs to be at least 3:1 in make sure the stormwater is not short circuited
through the basin. The second forebay looks to not be providing the 3:1 flowpath. Please make sure both forebays are
providing the 3:1 flowpath.
3. A few inconsistencies were noted on the plansheets. The outlet detail on CG500 does not match the details on CG504.
Also, the details on CG504 should match. One is missing the orifice and the trash guards are different. Please revise the
details to be accurate.
4. Please show proposed drainage easements and public right of way on the plans.
The requested information should be received by this Office prior to August 17, 2012, or the application will be returned as
incomplete. The return of a project will necessitate resubmittal of alt required items, including the application fee. If you
need additional time to submit the information, please send your request, including date by which you expect to submit the
required information, to my attention. The Division is allowed 90 days from the receipt of a completed application to
issue the permit.
Please reference the State assigned project number on all correspondence. New original documents must be provided and
copies are not acceptable. If you have any questions concerning this matter feel free to contact me at (919) 807.6368 or
brian.lowther@ncdenr. ov.
Sincerely,
Brian Lowther
Environmental Engineer
cc: 'Fayetteville Regional Office
Stormwater Permitting Unit Files
ec: David Heins, Environmental Division Chief (DPW)
Wetlands and Stormwater Branch 1�TOne
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 1 V O hCarolina
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604atura!!u
Phone: 919M7-63001 FAX: 91H07-6494
Internet: www.ncwatealuality.org
DWQ USE ONLY
Date Received
Fee Paid
Permit Number
.50,5 * 1 -I I l U 9 3 �)
I 5w t-P I a- D I (J Lp
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
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. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
SOF Training Facility (Pope)
2. Location of Project (street address):
Booster Street
City:Ft Bragg County: Cumberland Zip:28310
3. Directions to project (from nearest major intersection):
4. Latitude:35° 30' 44" N Longitude:79° 01' 81" W of the main entrance to the project.
H. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) , and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑LAMA Major
❑NPDES Industrial Stormwater
®Sedimentation/Erosion Control: 4.0 ac of Disturbed Area
❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:FB-SOF Training Facility (Pope)/CUMBE-2012-167/Sediment and
JUL 2.7 2012
Form SWU-101 Version 07]un2010 Page 1 of
III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project}:
Applicant/Organization: Directorate of Public Works (DPW)
Signing Official & Title:Mr. David Heins, Environmental Division Cheif (DPW)
b.Contact information for person listed in item 1a above:
Street Address:2175 Reilly Road Stop A
City:Fort Bragg State:NC Zip:28310-5000
Mailing Address (if applicable):2175 Reilly Road Stop A
City:Fort Bragg State: NC Zip:28310-5000
Phone: (910 } 396-8207 Fax: ( 910 } 907-2420
Email:david.a.heins.civ@mail.mil
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the Iessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official & Title:
b.Contact information for person listed in item 2a above:
Street Address:
City:
State:
Zip:
Mailing Address (if applicable):
City: State: Zip:
Phone: ( ) Fax:
Email:
a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization: Mr. Lee Ward
Signing Official & Title:DPW/Water Management Branch
b.Contact information for person listed in item 3a above:
Mailing Address:Bldg 0-9125, McKellars Road
City:Fort Bragg
Phone: (910 ) 396-2301
Email: lee.p.ward.civ®mail.mil
4. Local jurisdiction for building permits:
Point of Contact:
State:NC
Zip:28310
Fax: ( 910 ) 907-2420
Phone #: ( }
Form SWU-101 Version 07Jun2010 Page 2 of 6
IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Wet Detention Pond
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW - 1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the Cape Fear _ River basin.
4. Total Property Area: 4.0 acres
5. Total Coastal Wetlands Area: acres
6. Total Surface Water Area: acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area,: 4.0 acres
+ Total project area shall be calculated to exclude the following the normal pool of impounded structures, the area
between the batiks of streams and rivers, the area below the Nonnal High Water (NMI\} line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (B UA). Non -coastal wetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 36.5 %
9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area
Drainage Area
Drainage Area
Receiving Stream Name
Little River
(Lower Little
River
Stream Class
C
Stream Index Number *
18-23-(24)
Total Drainage Area (sf)
234681
On -site Drainage Area (so
174250
Off -site Drainage Area (so
60431
Proposed Impervious Area** (so
85748
% Impervious Area** total
36.5
Impervious- Surface Area
Drainage Area 1
Drainage Area
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
14252
On -site Streets (SO
0
1
On -site Parking (so
30042
On -site Sidewalks (so
3657
? f �5��
Other on -site (so
625
Future (so
0
]
Off -site (so
15973
f
Existing BUA*** (so
0
1
Total (so:
85748
Stream Class and Index Number can be determined at: N07.//portAl.ticde)ir.org leb/wq[ps/csu/classificatirnts
Form SWU-101 Version 07Jun2010 Page 3 of
** Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
*** Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. Area measurement
using Microstation survey file.
Projects in Union County: Contact DtyQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that maybe subject to more stringent stormwater requirements as per NCAC 02B . 0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.org/web/wq/ws/su/bmp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from hn://portal.ncdenr,org/web/wq/ws/su/statesw/forms dots. The complete
application package should be submitted to the appropriate DWQ Office. (The appropriate office may be
found by locating project on the interactive online map at http://12ortal.ncdenr.org/web/wq/ws/su/mans.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the Iatest
versions
for each submitted application package from hqp://portal.ncdenr.org/web/wq/ws/su/statesw/forms
dots.
1. Original and one copy of the Stormw-ater Management Permit Application Form.
ln' '
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants
�M
Form, (if required as per Part VII below)
,
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M
�-
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
h!W://www.envhelp.org/pages/onestopexpress.htmi for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/management
for
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
`—
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2
mile radius on the map.
7. Sealed, signed and dated calculations,
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/ Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW Iine of tidal
waters, and any coastal wetlands landward of the MHW or NHW Iines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
Form SWU-101 Version 07Jun2010 Page 4 of 6
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
10
11
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHVVT prior
to submittal, (910) 796-7378.) N�
A copy of the most current property deed. Deed book: Page No:
For corporations and limited liability corporations (LLC): Provide documentation from the NC
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
hn://www.secretary.state.nc.us/Corporations/CSearch.aspx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be
provided as an attachment to the completed and notarized deed restriction form. The appropriate deed
restrictions and protective covenants forms can be downloaded from
hm://portal,ncdenr.org/web/wq/ws/su/statesw/forms does. Download the latest versions for each
submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, 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 NC DWQ and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Don Higgins
Consulting Firm: Day & Zimmermann
Mailing Address:125 The Parkway, Suite 400
City:Greenville State:SC Zip:29615
Phone: (864 ) 242-6788 Fax: (864 _ } 241-6750
Email:don.higgins@dayzim.com
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 2a) with (print or type name of organization listed in
Contact Information, item 1a) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
Form SWU-101 Version 07Jun2010 Page 5 of 6
. ,, . ,
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS-143-215.6.
Signature:
Date:
I, a Notary Public for the State of County of
do hereby certify that personally appeared
before me this _ day of
, and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official sea[,
SE,AI_
My commission expires
X. APPLICANT'S CERTIFICATION
I, (print or type narrre of person listed in Contact lrrfornration, item In) Mr. David Heins ,
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwater 1 s un r 15A NCAC 21-1 .1000, SL. 2006-246 (Ph. II - Post Construction) or SL, 2008-21-1.
Signature: Date: ( 2 Z
I, , a Notary Public for the State of
do hereby certify that
County of
personally appeared
before me this _ clay of , and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-101 Version 07Jun2010 Page 6 of 6
Permit Number:
(to he pros ided by DIVA)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
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:
I -low 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.
Forrn SW401-Wet Detention Basin O&M-Rev.4 Page I of 4
Permit Number:
(to he provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
Flow l 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 13MP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4
Pennit Number:
(to he pro►,ided by DJVQ)
Drainage Area Number:
BMP element:
Potentialproblem:
blow 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-
1 78b.
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 _172.30 . feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 172.30 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
172.30
---------------
FOIZEBAY
BASIN DIAGRAM
(fill in the blank:)
IVolume
-ft Min.
Sediment
Storage
Permanent Pool Llevation 175.90
Pool
Sediment Removal Elevation 172.30 Volume
Bottom 131evation 171.30
MAIN POND
pediment
Storage
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4
Pennit Number:
(to be provided by DI'Q)
I acknowledge and agree by my signature below that I atn 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 nanie:SOF Training hey (Pope)_
BMP drainage area nwnber:Drainage Area
Print name: Mr. David Heins
Title: Directorate of Public Works (DPW) /Chief -Environmental Division
Address:2175 Reilly Road Stop A, Fort Brag_t„ NC 28310-5000
Phone: (910) 396-2301,, , /
Signature:
Date: 2-��il l
C
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 (lie subdivision has been named the president.
I, , a Notary Public for the State of
County of , 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.
Dorm SW401-We( Detention Basin O&M-Rev.4 Page 4 of 4
Permit No
(to be provider! by D WQ)
A�� �pF w a TF4 p
o
NCDENR a Y
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.
L :PROJECT INFORMATION..:%,. , : .=,.3i''_%
Project name SOF Training Facifity, Pope Field!Cumberiand County, NC
Contact person Don Higgins
Phone number B64.241.6768
Date 14-Jun-12
Drainage area number DA 1
A. DESIGN INFORMATION
-
Site Characteristics
Drainage area
234,681 fe
Impervious area, post -development
85,748 fC
% impervious
36.54 %
Design rainfall depth
1.0 in
Storage Volume: Non-SAWaters
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 prelpost control of the Iyr 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 l-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 OR 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
7,495 OK
7.500 R' OK, volume provided is equal to or in excess of volume required.
ft3
(Y or N)
3.7 in
0.36 (unitless)
0.37 (unitless)
4.17 inlhr OK
4.41 ft3(sec
8.35 ft3lsec
3.94 ft3lsec
176.40 fmsl
175.90 fmsl
174.10 fmsl
176.40 fmsl
175.40 fmsl
172.30 fmsl
171.30 fmsl
1.00 ft
(Y or N)
176.4 fmsl OK
Form 5W401-Wet Detention Basin-Rev.8-9117M Parts I. & II. Design Summary. Pape 1 of 7
Permit
(to be provided by DWQ)
!l: DESIGN INFORMATION
Surface Areas
Area, temporary pool 11,800 ft,
Area REQUIRED, permanent pool 5,867 ft'
SAIDA ratio 2,50 (unitless)
Area PROVIDED, permanent pool, A,,,m pdd, 11,000 OK
Area, bottom of 1 Oft vegetated shelf. Add, ma 8,375 �
Area, sediment cleanout, top elevation (bottom of pond), Add,-pd,d 3,850
Volumes
Volume, temporary pool
7,500 ft'
OK
Volume, permanent pool. V.,-,W
25,225 ft'
Volume, forebay (sum of forebays if mare than one forebay)
5,500 ft3
Forebay % of permanent pool volume
218% %
OK
SAIDA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used?
N (Y or N)
Mountain/Piedmont SAIDA Table Used?
Y (Y or N)
SAIDA ratio
2.50 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Vperm-PW
25,225 ft3
Area provided, permanent pool, A,, d ,dd,
11,000 ft
Average depth calculated
3.00 It
OK
Average depth used in SAIDA, d,,, (Round to nearest 0.5ft)
3.0 ft
OK
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, A,,,m_dd,
11,000 ft.2
Area, bottom of 1Oft vegetated shelf, Aid, men
8,375 f'
Area, sediment cleanout, top elevation (bottom of pond), Am_,d d
3,850 17
"Depth" (distance blue bottom of 1 Oft shelf and top of sediment)
3 10 ft
Average depth calculated
3.00 ft
OK
Average depth used in SAIDA, d. (Round to nearest 0 5ft)
3.0 ft
OK
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of onfice (if circular)
1.50 in
Area of orifice (if -non -circular)
in
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Hd)
0.60 ft
Drawdown through weir
N (Y or N)
Weir type
{unitless)
Coefficient of discharge (C.)
(unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
4.41 ft3lsec
Post -development 1-yr, 24-hr peak flow
8.35 ft31sec
Storage volume discharge rate (through discharge orifice orwelr)
0.04 ft'Isec
Storage volume drawdown time
3.28 days
OK, draws down in 2-5 days.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 ft
OK
Length of flowpath to width ratio
3 :1
CK
Length to width ratio
1.5 :1
OK
Trash rack for overflow & orifice?
Y (Y or N)
OK
Freeboard provided
1 0 ft
OK
Vegetated filter provided?
N (Y or N)
OK
Recorded drainage easement provided?
N (Y or N)
Insufficient. Recorded drainage easement required.
Capures all runoff at ultimate build -out?
Y (Y or N)
OK
Drain mechanism for maintenance or emergencies is:
Emergency Spillway
Form SW4D1-Wet Detention Basin-Rev.S-9117109
Parts I. B It. Design Summary, Pago 2 of 7
Permit No.
(to be provided by DWQ)
JUL REQUIRED 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
Init-ia1�
Sheet No.
1. Plans (1" - 50' or larger) of the entire site showing:
CG110
Design at ultimate build -out,
C13110
Off -site drainage (if applicable),
CG110
Delineated drainage basins (include Rational C coefficient per basin),
CG110/504
Basin dimensions,
C13110
Pretreatment system,
CG504
High flow bypass system,
CG110
Maintenance access,
NIA
Proposed drainage easement and public right of way (ROW),
CG504
Overflow device, and
NIA
Boundaries of drainage easement.
2. Partial plan (V = 30' or larger) and details for the wet detention basin showing:
CG504
Outlet structure with trash rack or similar,
CG110
Maintenance access,
CG110/504
Permanent pool dimensions,
CG504
Forebay and main pond with hardened emergency spillway,
CG504
Basin cross-section,
CG505
Vegetation specification for planting shelf, and
CG504
Filter strip,
3. Section view of the wet detention basin (1" = 20' or larger) showing:
CG110/504
Side slopes, 3:1 or lower,
CG110
Pretreatment and treatment areas, and
CG1101500
Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
CE506
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,
CG503
to verify volume provided.
7�
6, A construction sequence that shows how the wet detention basin will be protected from sediment until the
CE101-103
entire drainage area is stabilized.
Report
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
9. A copy of the deed restrictions (if required).
NIA
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
Appendix soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.8-91171D9 Part III. Required Items Checklist, Page 3 of 7
Average Depth Calculation
Figure 10-2b, Option 2
Surface Area at Permanent Pool (Main Pond) 7725 ft2
Surface Area at Bottom of Shelf (Main Pond) 6025 ft2
Surface Area at Permanent Pool (Forebay 1) 2075 ft2
Surface Area at Bottom of Shelf (Forebay 1) 1500 ft2
Surface Area at Permanent Pool (Forebay 2) 1360 ft2
Surface Area at Bottom of Shelf (Forebay 2) 850 ft2
Total Surface Area at Permanent Pool 11000 ft2
Total Surface Area at Bottom of Shelf 8300 ft2
Surface Area at Bottom of Pond 3850 ft2
Depth 3.5 ft
Average Depth 3.00 ft
Temporary Pool Volume per Section 3.3.1 of NCDENR Stormwater Manual
IA
0.37
Rv
0.38 Rv=0.05+0.9" IA
A
5.39 ac
RD
1.00 in
V=3630"RD*Rv"A
Volume 7494 cf
Temporary Pool Depth 0.68 ft
Orifice Equation 3.5.2
Diamter Outlet Pipe (in) 1.5
CD 0.6
Area of flow at entrance (sf) 0.012
g 32.2
Ho Driving Head (13) (ft) 0.20
Q=CD"A"SQRT(2*g"Ho)
Calculated Q (cfs) 0.026
Temporary Pool (cf)
7500
Drawdown Time (hours)
78.84
Drawdown Time (days)
3.28
L
Stage -Storage Table
Elevation (ft)
Stage (ft)
Storage (ft3)"
Cumulative
Storage (ft3)
172.30
0
0
0
173.00
0.7
2835
2835
173.50
1,21
2875
5710
174.00
1.7
2970
8680
174.50
2.2
3110
11790
175.00
2.7
3300
15090
175.50
3.2
4435
19525
175,901
3.6
57001
25225
176,401
4.11
75001
32725
"Storage area measured in Microstation