SW8060840_HISTORICAL FILE_20061017

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW L612(1 AO
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
ID� HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
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YYYYMMDD

State Stormwater Management Systems
Permit No SW8 060840
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
Tom Spivey & Southeast Brunswick Sanitary District
Administration Building for Southeast Brunswick Sanitary District
4240 Committee Drive, Southport, Brunswick 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 October 17, 2016, 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 16 on page 3 of this permit The stormwater
control has been designed to handle the runoff from 57,000 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 The built -upon area for the future
development is limited to 23,345 square feet
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 060840
6 The following design criteria have been provided in the wet detention pond and
must be maintained at design condition
a Drainage Area, gicres
Onsite, ft
Offsite, ft2
b Total Impervious Surfaces, ft2
c Design Storm, inches
d Pond Depth, feet
e TSS removal efficiency
f Permanent Pool Elevation, FMSI�
g Permanent Pool Surface Are.9, ft
h Permitted Storage Volume, ft
i Temporary Storage Elevation, FMSL
i Controlling Orifice
k Permitted Forebay Volume, ft3
1 Max Fountain Horsepower
I Receiving Stream/River Basin
m Stream Index Number
n Classification of Water Body
II SCHEDULE OF COMPLIANCE
1 81
78,900
0
57,000
40
90%
430
4,909
5,426
440
1"0 pipe
1,873
1/8
Beaverdam Creek 1 Cape Fear
CPF17 18-88-9-1-(0 5)
"SC Sw HQW"
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 Mowin.9 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
5 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
6 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
Page 3 of 7

State Stormwater Management Systems
Permit No SW8 060840
7 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 listed in Section
16 (1) of this permit
8 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
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
Ma)or permit was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan
11 The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction
12 A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction
13 The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made
Page 4 of 7

State Stormwater Management Systems
Permit No SW8 060840
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate
The approval of this request will be considered on its merits and may or may not
be approved The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request
2 Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems
5 The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility
6 The permit may be modified, revoked and reissued or terminated for cause The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition
7 Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual
8 Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit
9 The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days
Permit issued this the 17th day of October 2006
N0RT AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
��
forrAlah W Klimek,, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

N
RE SE Brunswid, Sdlnitary District Admin Bldg SW8 060840
Subject. RE SE Brunswick Sanitary District Admin Bldg SW8 060840
From: "Bryan McCabe" <bmccabe@wkdickson com>
Date. Mon, 16 Oct 2006 17 25 34 -0400
To. "Linda Lewis" <linda lewis@ncmail net>
Linda
I faxed the sheet over this afternoon Please let me know if you need
anything else
Thank you,
Bryan McCabe
W K Dickson - Wilmington Office
ph# 910-762-4200
fax# [phone]
-----Original Message -----
From Linda Lewis hailto linda lewis@ncmail net]
Sent Monday, October 16, 2006 12 21 PM
To Bryan McCabe
Sub3ect SE Brunswick Sanitary District Admin Bldg SW8 060840
Bryan
If you can fax me over a copy of that revised calculations page that is
signed, sealed & dated, I believe I can get this permit issued today
Our FAX # is 350-2004
Thanks,
Linda
l of 1 10/16/2006 5 30 I'M

1W
PSWK
WDICKSON
community infrastructure consultants
September 11, 2006
Ms Linda Lewis
Environmental Engineer
NC DENR — Division of Water Quality
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
RE Administration Building for the Southeast Brunswick Sanitary District
Brunswick County, North Carolina
WKD Protect Number 60302 00 WL
SW8 060840
Dear Ms Lewis
Following are our responses to the comments in the August 29, 2006, letter from the NC Division of
Water Quality regarding the stormwater permit application for the Administration Building for the
Southeast Brunswick Sanitary District
Comment
1 Please report the areas and volumes provided in the pond on the supplement form, not the
minimums required The supplement form indicates that the surface area of the pond is 4,892
ft2, however the calculations indicate that 6,697 ft2 has been provided In direct conflict with
this, the calculations use 4,909 ft2 as the surface area provided at the permanent pool to
calculate the provided storage volume in the pond The provided surface area of the pond to
report on the supplement and to use in the volume calculation, includes the surface area of the
forebay at the specified permanent pool elevation Likewise, the permanent pool and
temporary pool storage volumes provided in the pond include the forebay
Response Page 1 of the Wet Detention Basin Supplement has been updated to show
4,909 ft2as the provided Permanent Pool Surface Area Page 1 of the Stormwater
Pond Calculations has been updated to show 4,909 Was the provided Permanent
Pool Surface Area This is consistent with the surface area at the permanent pool,
including both the main pond and the forebay, used to calculate the provided
storage volume in the pond
909 Market Street
Wilminglon, NC 28401
Tel [phone]
Far 910 762 4201
www wkdicbon c.om
SEP z 1 2006
�1
f
North Carolina • south Carolina • Georgia Florida

Ms Linda Lewis
September 11, 2006
Page 2
Comment
2 Please specify the type of wetland species to be planted on the 6 1 shelf Redtop grass is not a
wetland species Please refer to Table 2 2 in Chapter 2 of the current BMP Manual for a list of
suitable wetlands species
Response Sheet C9 (Site Details) has been updated to specify lizard's Tail (Saururus
Cernuus) along the littoral shelf rather than Redtop Grass
Comment
3 Please dimension each line and arc of the permanent pool contour Overall dimensions are
helpful, but not sufficient
Response Sheet C2 (Site layout) has been updated with the required dimensions
Comment
4 Please split out the future BUA as a lump sum in Section III 6 of the application You can mark
out the words "Off site" in the last box and replace it with "Future," and report the future
amount in the appropriate box
Response As requested, Page 2 of 4 of the Stormwater Management Permit Application has
been updated to split out the future BUA
We have attached the following items for review
• Two copies of the revised Page 2 of the Stormwater Management Permit Application Form
• Two copies of the revised Page 1 of the Wet Detention Basin Supplement
• Two copies of the revised Page 1 of the Stormwater Pond Calculations
• Two copies of the revised Plan Sheets C2 and C9
Should you have any further comments or questions, please contact me at [phone]
Sincerely,
W K Dickson & Co, Inc
Bryan McCabe, E I
/pb
Enclosure As noted above
cc Mr Tom Spivey, Southeast Brunswick Sanitary District

SEBSD Administration Bldg SW8 060840
Subject: SEBSD Administration Bldg SW8 060840
From: Linda Lewis <Itnda lewts@ncmail net>
Date: Tue, 29 Aug 2006 09 16 02 -0400
To: Denise Freund <dfreund@wkdtckson com>
Denise
Attached please find my Express Review comments
returning page 2 of the application and page 1
regular mail
Linda
for the subject project I am
of the supplement for revision via
060840.augO6.doc Content -Type: application/msword
Content -Encoding: base64
1 of 1 8/29/2006 10 32 AM

,
OCPO F40
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WK
LETTER OF TRANSMITTAL lft
WDICKSON
community infrastructure consultants
909 Market Street Wilmington, North Carolina 28401 910 762 4200 tel [phone] fax
TO Mr Cameron Weaver, Coordinator
1-Stop Permitting/Express Permitting
NC DENR
127 Cardinal Drive Extension
Wilmington, NC 28405
DATE. August 25, 2006
RE. Administration Building
For the SEBSD
PROJECT NO- 60302 00 WL
We are sending via ❑ Overnight ❑ Regular Mail ❑ Pick-up ® Hand Delivered
The following items ❑ Correspondence ® Plans ❑ Specifications ® Other as listed below
COPIES
DATE
NO.
DESCRIPTION
1 original &
1 copy
Stormwater Management Permit Application
1 original &
1 copy
Wet Detention Basin Supplement
2
Erosion Control Specifications
2
Protect Plan Sets CO - C10, SV-1
2
Stormwater Drainage Narrative
2
Stormwater Management Calculations
THESE ARE TRANSMITTED as checked below
® For Approval
❑ As Requested
❑ Approved as Submitted
❑ Returned for Corrections
❑ For Your Use
❑ For Review and Comment
❑ Approved as Noted
❑ Forward to Subcontractor
REMARKS
We are pleased to submit the aforementioned documents for Express Stormwater Management Permit
review The $4000 check for Stormwater Express Permitting was submitted with the Erosion Control Permit
on August 3, 2006 Thank you for your assistance with this protect and please let me know if you need
anything else 1 ZEC-C � rD
-r (
AUG 1 h tj1 ,i
COPY TO Mr _Tom Spivey SIGNED
Denise Freund P E

SEBSD WWTP Expansion SW8 961229 Mod
Subject: SEBSD WWTP Expansion SW8 961229 Mod
From: Linda Lewis <linda lewxs@ncmail net>
Date: Tue, 22 Aug 2006 09 33 26 -0400
To: Bryan McCabe <bmccabe@wkdlckson com>
Bryan
Per our meeting on August 16, 2006, and based on comments received from DWQ staff
in Raleigh and Washington, the open -top SBR's, holding basins, equalization basins,
and sludge digestion basins will NOT be considered as impervious These areas are
likened to a swimming pool, which the Division also does not count as BUA
Linda
1 of 1 8/28/2006 9 47 AM

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STQRMWATER NARRATIVE
Administration Building
for the
Southeast Brunswick Sanitary District
Brunswick County, NC
August 2006
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W K Dickson & Co, Inc
909 Market Street
Wilmington, North Carolina 28401
[phone]

GENERAL
The Southeast Brunswick Sanitary District (SEBSD) has been renting office space from
Brunswick Electric Membership (BEMC) for several years BEMC is expanding operations
and they are in need of the office space Rather than continuing to lease office space,
SEBSD plans to construct a new Administration Building
The site is located on Committee Drive off of Executive Park Boulevard in Southport, NC
The site is moderately flat and currently drains by means of sheet flow over existing ground
surface to Beaverdam Creek Proposed drainage is through a storm drainage system that
outlets to a wet detention basin before out falling to Beaverdam Creek
PROPOSED IMPROVEMENTS
The wet detention basin is sized to treat stormwater for the future build -out of the site The
future build -out includes the construction of the following facilities 16,500 SF of building,
38,200 SF of parking, 1,300 SF of sidewalk, and 1,000 SF of other impervious surfaces
(dumpster pad and generator pad)
Currently, SEBSD plans to construct only a portion of the facilities including the following
3,600 SF of building, 1,145 SF of sidewalk, 25,500 SF of parking, and 1,000 SF of other
impervious surfaces (dumpster pad and generator pad) The total disturbed area required to
make the current installations is approximately 3 0 acres
DRAINAGE CONSIDERATIONS
The proposed site is being treated as a high -density site Runoff from the majority of the
proposed impervious surfaces will be directed through a storm drainage system to a
proposed wet detention basin The wet detention basin is designed to remove 90% of the
total suspended solids from the first one inch of rainfall before out falling into Beaverdam
Creek
The portion of proposed impervious surfaces not being directed to the wet detention basin
is the driveway connection from the roadway to the proposed site This impervious surface
will be treated by means of a vegetated roadside ditch before out falling to Beaverdam
Creek