SW6110103_Cover Letter & Permit_20110201

AIM
NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 1, 2011
Mr. Craig Lantz DE ` R—FRO
Water Management Branch Chief FEB 0 8 2011
2175 Reilly Road Stop A
Fort Bragg, North Carolina 28310 D A AQ
Subject: Stormwater Permit No. SW6110103
JSOC, SOF C4 Facility
High Density Commercial Infiltration Trench Project
Cumberland County
Dear Mr. Lantz:
The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for Fort
Bragg JSOC, SOF C4 Facility on January 20, 2011. 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. SW6110103, dated
February 1, 2011, 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 January 31, 2021, 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 inspection and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
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 Mike Randall at [phone]; or
[e-mail].
Sincerely,
Jor Coleen H. Sullins
cc: i Fayetteville Regional Office
Mr. Jason Sesler, P.E., Greenhorne & O'Mara, Inc.
SPU Files
Wetlands and Stormwater Branch One 1.,Cc�IrO1IRc�I
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 1 i
Location: 6 N. Salisbury St. Raleigh, North Carolina 27eNorth
Carolina
�atlrrally
Phone: [phone]b3001 FAX: 919-807£4941 Customer Service: 1 A77823-6748
Internet: www.ncwaterqualiry.org
An Equal Opportunity \ Affirmative Action Employer

State Stormwater Permit
Permit No. SW6110103
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
Fort Bragg
JSOC, SOF C4 Facility (LI 66362)
Fort Bragg, Cumberland County
FOR THE
construction, operation and maintenance of one an underground infiltration trench in
compliance with the provisions of Session Law 2006-246 and 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 January 31, 2021 and shall
be subject to the following specified conditions and limitations:
1. 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 this permit, approved plans and supplement form. The
stormwater control has been designed to handle the runoff from 58,400 square
feet of impervious area.
3. 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.
4. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
The built -upon areas associated with this project shall be located at least 30 feet
landward of all perennial and intermittent streams.
Page 1 of 4

State Stormwater Permit
Permit No. SW6110103,
6. The following design criteria have been provided in the infiltration trench and
must be maintained at design condition:
a. Drainage2Area, acres:
Onsite, ft :
Offsite, ftZ:
b. Total Impervious Surfaces, ftz:
Onsite, ft2:
Offsite, ft2:
C. Design Storm, inches:
d. Trench Length ft:
e. Trench Width, ft:
f. Trench Height, ft:
g. Bottom Elevation, FMSL:
h. Overflow Elevation, FMSL:
i. Permitted Storage Volume, ft3:
j. Predevelopment 1 year 24 hour:
k. Post development 1 year 4 hour:
I. Type of Soil:
M. Expected Infiltration Rate, in/hr:
n. Seasonal High Water Table, FMSL:
o. Time to Draw Down, hours:
P. Receiving Stream/River Basin:
q. Stream Index Number:
r. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
2.49
80,275
4,725
58,400
56,750
1,650
1.0
110.0
32.0
4.63
244.00
246.65
6,991
1.75
0.15
Wagram
0.30
235.50
3.29
Tank Creek / Cape Fear
18-23-27
„C„
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
2. 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.
G. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
4. The permittee shall maintain on site an annual summary report of the
maintenance and inspection records for each BMP. The report shall summarize
the inspection dates, results of the inspections, and the maintenance work
performed at each inspection.
Page 2 of 4

State Stormwater Permit
Permit No. SW6110103
5. 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.
6. Upon completion of construction 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.
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 was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. 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.
11. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity 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 the
supporting documentation as listed on page 2 of the form. The approval of this
request will be considered on its merits and may or may not be approved.
Page 3 of 4

State Stormwater Permit
Permit No. SW6110103
2. The permittee is responsible for compliance with all permit conditions until such
time.as the Division approves the transfer request.
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 reissuance 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 in writing of any name, ownership or
mailing address changes at least 30 days.
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 1 day of February, 2011.
_NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Y�oieen ri. aunins, uirecior
Division of Water Quality
By Authority of the Environmental Management Commission
Page 4 of 4

State Stormwater Permit No. 6110103
Fort Bragg, JSOC, SOF C4 Facility (LI 66362)
Cumberland County
Designer's Certification
I, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
(Project)
for Fort Bragg, JSOC, SOF C4 Facility 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 1 of 2

State Stormwater Permit No. 6110103
Fort Bragg, JSOC, SOF C4 Facility (LI 66362)
Cumberland Countv
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
_2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A 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. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Fayetteville Regional Office
Page 2 of 2