SW8070708_HISTORICAL FILE_20070716

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 o7 a7o 8
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
Z oo 7 07 1 �
YYYYMM DD

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Hnvironment and Natural Resources
Coleen It. Sullins, Director
Division of Water Quality
July 16, 2007
Dale Connor
Atlantic Marine Corps Communities, LLC
1801 West End Avenue, Suite 1700
Nashville, TN 27212
Subject: Stormwater Permit No. SW8 070708
Knox Cove
High Density Project
Onslow County
Dear Mr. Connor:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Knox Cove on July 16, 2007. 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.' SW8 070708 dated July 16, 2007,
for the construction of the subject project.
This permit shall be effective from the date of issuance until July 16, 2017, 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 Chris Baker, or me at [phone].
Sincerely,
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/csb: S:IWQSISTORMWATERIPERMIT1070708.ju107
cc: Thomas Davis, P.E., Little John Engineering and Associates
Onslow County Building Inspections
Chris Baker
Wilmington Regional Office
Central Files
One
NorthCarohna
Awalurally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phonc (9) 9) 733-7015 Customer Scrvicc
1nIC1'nel: wWrv,ncwaterqLill] itY 01 Locati m: N, 512 Salisbury St, Raleigh, NC 27604 Pax [phone] 1-S77-623-6748
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State Stormwater Management Systems
Permit No. SW8 070708
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
Dale Connor and Actus Lend Lease
Knox Cove
Camp Knox Road, Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond 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 July 16, 2017, 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 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 382,339 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 2 of 7

State Stormwater Management Systems
Permit No. SW8 070708
no
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
Drainage Area, acres:
18.7
Onsite, ft :
814,384
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
382,339
C.
Design Storm, inches:
1
d.
Pond Depth, feet:
6
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
7
g.
Permanent Pool Surface Area, ft2:
26,417
In.
Permitted Storage Volume, ft3:
32,108
i.
Temporary Storage Elevation, FMSL:
8.08
j.
Controlling Orifice:
2.5"0 pipe
k.
Permitted Forebay Volume, ft3:
22,893
I.
Fountain Horsepower, HP
113
M.
Receiving Stream/River Basin:
Scales Creek 1 White Oak
n.
Stream Index Number:
19-16-4
o.
Classification of Water Body:
, SC,HQW,NSW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at 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 re -vegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 070708
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.
5. Decorative spray fountains will be allowed in the stormwater treatment system,
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 this pond is 113 horsepower.
6. The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
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
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 070708
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 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 re -issuance 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 16th day of July, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Jur uoieen H. 5uinns, uirwor
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 070708
Knox Cove
Stormwater Permit No. SW8 070708
Onslow 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. SW8 070708
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
Onslow County Building Inspections
Page 7 of 7

L I T T L E 1 0 H N E N G I N E E R I N G A S S O C I A T E S
E N G INEERING PLANNING L.ANDSCAPE ARC 1117ECTU RE: LAN IJ SURVEYING
1 9 3 5 TWENTY - FIRST AVENU E SOUTH 0 N A S H V I I. L E, TENN ESSFE 3 7 2 1 2
P H O N E 61 5- 3 8 5- 4 1 44 • FAX [phone] + W W W. L E A I N C COM
TRANSMITTAL
To: Chris Baker P1I: 910-796-7304
NC DENR
127 Cardinal Drive Extension
Date: 07/12/07
Job No.: LEA #24235
Project: Camp Lejeune
Wilmington, NC 28405 Jacksonville, NC
Regarding: Knox Cove Stormwater Permit Submittal
We are sending:
51 Attached 0 Drawings ❑ Computer Disk
ElUnder Separate Cover 0 Originals/Reproducibles ❑ Specifications
Copy of Letter Change Order Other
Via:
Mail
Courier
Express/Overnight Mail
Date
Description
Copies
Express Review Fee, High Density $4000
l
Stormwater Management Permit Application Form (Original + 1 copy)
I
Wet Detention Basin Supplement (Low Density Supplement is already on tile)
1
Project Narrative and Calculations
1
Construction Documents
2
We are sending:
FRI For Approval
ElFor Review & Comment
Remarks:
For Your Use
❑ As Requested
For Your Record
For Bids Due
Copies to: Signed: Matt Carter
�Dreceived

Z/ 13/0 7

I
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
April 10, 2007
Dale Conner
Atlantic Marine Corps Communities, LLC
1801 West End Avenue, Suite 1700
Nashville, TN 37212
Subject: Request for Additional Information
Knox Cove
Onslow County
Dear Mr. Conner:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Knox Cove on April 4, 2007. 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. On the permit application only one drainage area is shown. Please provide an
overall drainage area (as shown on the application) and the four (4) smaller
drainage areas that are directed to the infiltration basins. Be sure to include the
impervious surface area break down for each of the four (4) smaller drainage
areas.
2. Please submit the geotechnical soils report for the proposed infiltration basins.
Has NCDENR Soil and Water Conservation personal visited site area and
confirmed infiltration rate and Seasonal High Water Table?
3. At minimum please provide the bottom elevation and surface area as well as the
storage area and surface elevation. This information is needed to properly
evaluate the basin drawdown time.
4. Basin bottom areas on the supplementals are the same as the top surface areas
within the stage storage calculations, please correct.
5. Are drainage basins 1a and 1b combined on the infiltration supplement or is the
data for one (1) basin? Please report the total areas, volumes, etc., treating
drainage area one (1).
6. Underdrains are not allowed in infiltration basins, please correct.
7. Please provide a detail of the infiltration basin inlet/bypass structure for each
basin or a typical detail with a table detailing all entrance, bypass, exit, etc.,
elevations. Provide a pretreatment sump in each inlet/bypass structure.
8. Any project with a treatment system is considered "higgh density" for permitting
purposes. The application fee for high density is $4,000 submit, please the
$2,000 balance.
No thCarolina
Alatttrra/!y
North Carnlina Division of Water Quality 1617 Mail Smice Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: www.ncwater9ua_ lity,ora Location: N. 512 Salisbury St. Raleigh, NC 27604 Fax [phone]
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Dale Conner
April 10, 2007
Because the application has significant permitting issues/deficiencies, a
resubmittal fee of $1,000 will be required in order for this project to remain in the
express program. Note: The $1,000 fee is due to the comments addressed in this
letter and the $2,000 fee is for the high density treatment application. A balance
of $3,000 is required for continued review.
Please note that this request for additional information is in response to a preliminary
review. The requested information should be received by this Office prior to April 18,
2007, or the application will be returned as incomplete. The return of a project will
necessitate resubmittal of all required items, including the application fee.
If you need additional time to submit the information, please mail or fax your request for
a time extension to the Division at the address and fax number at the bottom of this
letter. The request must indicate the date by which you expect to submit the required
information.
The construction of any impervious surfaces, other than a construction entrance under
an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and
is subject to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any
original documents that need to be revised have been sent to the engineer or agent, All
original documents must be returned or new originals must be provided. Copies are not
acceptable. If you have any questions concerning this matter please feel free to call me
at [phone].
Sincerely,
cv'�' �'A<�
Chris Baker
Environmental Engineer II
ENBlcsb: S:IWQSISTORMWATERIADDINF0120071KnoxCove.apr07
cc: Tom Davis, P.E., Little John Engineering Associates
File
Page 2 of 2