SW8060840_COMPLIANCE_20061016

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

10/16/2006 14 11 9107624201 WK DICKSON
4
PAGE 02
WK DICKSON
Engineering 909 Market Street
Land Planning Wslmmgton, NC 28401
Surveying R E C E(I 910 76�2�
SBSD OFFICE SITE OCT 16 2006
DWQ
TOTAL AREA DRAWING TO POND = 78,900 SF =1 81 AC DROJ # s 06003¢0
TOTAL PROPOSED EVIPERVIOUS SURFACE AREA DRAINING TO POND
PARKING - 38,200 SF
BUILDING - 16,500 SF
OTHER - 2,300 SF
57,000 SF
PERCENT IMPERVIOUS DRAINAGE AREA FOR POND
= (57,000 SF / 78,900 SF) x 100
=72%
POND DEPTH SA/DA %
(FT)
4.0 6.20
POND SURFACE AREA (MIN.)
(SF)
IF POND DEPTH = 4 0 FT, MINIMUM SURFACE AREA = 4,892 SF
USED 90% TSS CHART TO SIZE POND
4,892
TOP OF PERM POOL/BOTTOM AREA OF STORAGE (ELEV 43 0) ---frW 4,909 SF > 4,892 SF
REQUIRED STORAGE FOR FOREBAY 20% OF TOTAL PERMANENT POOL VOLUME
= (0 2)(MAIN BASIN VOLUME +FOREBAY VOLUME)
= (0 2x6,667 CF + 1,873 CF)
=1,708 CF (1,873 CF PROVIDED) .�`''�H ` CAR
�
0 ;F-''r197 L=
5
PROJECT SBSD OFFICE SITE SUBJECT POND CALCULATIONS JOB NO 20314 00 WL
PREPARED BY RNM DATE /10/06 CHECKED BY XXX DATE XXIXXM PAGE NOj- OF 3

10/16/2006 14 11 9107624201 WK DICKSON PAGE 01
WK
F A C S 1 M I L F DICKS0N
community mfrostruclure consultants
909 Market SlreeL Wilmington, North Carolina 28401 910 762 4200 tel [phone] fax
DATE 1() -
TO I ,nda L��;s
AFFILIATION-
FAX NO �� ko4
JOB NO
RE S , tkut1sUQ _,SQCIti �s't_ �C]i�1ii1 b� �J
MESSAGE
FROM- r i Q Q
W K *Ck5on & Co , Inc
910 762 4200 tel
910 762 4201 fax
Number of pages Including cover sheet: OC,

SE Brunswick Sanitary District Admm Bldg SW8 060840
Subject: SE Brunswick Sanitary District Admin Bldg SW8 060840
From: Linda Lewis <linda lewis@ncmail net>
Date: Mon, 16 Oct 2006 12 20 59 -0400
To. Bryan McCabe <bmccabe@wkdtckson com>
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
1 of] 10/16/2006 12 38 PM

WK DICKSON
Engineering 909 Market Street
Land Planning RECEIVED Wilmington, NC 28401
Surveying [phone]
SBSD OFFICE SITE
SEP 1 1 2006
DWQ �`�
ID # ..,-2zro(003Tv
TOTAL AREA DRAINING TO POND = 78,900 SF = 1 81 AC
TOTAL PROPOSED IMPERVIOUS SURFACE AREA DRAINING TO POND
PARKING = 3 8,200 SF
BUILDING = 16,500 SF
OTHER - 2,300 SF
57,000 SF
PERCENT IMPERVIOUS DRAINAGE AREA FOR POND
= (57,000 SF / 78,900 SF) x 100
=72%
POND DEPTH SA/DA %
(FT)
40 6.20
POND SURFACE AREA (MIN.)
(SF)
IF POND DEPTH = 4 0 FT, MINIMUM SURFACE AREA = 4,892 SF
USED 90% TSS CHART TO SIZE POND
4,892
TOP OF PERM POOL/BOTTOM AREA OF STORAGE (ELEV 43 0) =-6;, 4,909 SF > 4,892 SF
REQUIRED STORAGE FOR FOREBAY 20% OF TOTAL PERMANENT POOL VOLUME
= (0 2)(MAIN BASIN VOLUME +FOREBAY VOLUME)
= (0 2)(6,667 CF + 1,873 CF)
= 1,708 CF (1,873 CF PROVIDED)1�`
PROJECT SBSD OFFICE SITE SUBJECT POND CALCULATIONS JOB NO 20314 00 WL
PREPARED BY BNM DATE 07/10/06 CHECKED BY XXX DATE XX/XX/XX PAGE NO i OF 3

S"16�054'0
INFILTRATION SITE VISIT E U ST
Name of the Project Office Site for the -Southeast Brunswick Sanitary+ District
Location (attach a clear vicinity map) Committee Drive, Southport, NC
Street address, 5R number community etc
Directions from the nearest major intersection From the inlars ct on of N 211 & NC 1 Z3 go west on
SIC 211 to Executive PerkI3-lvd. SR 157LLL9§ a]l.) Two ri ton Executive Park, Blvd SR 1571Zto Committee
Drive 480 fe t Turn left on Committee Drive The Property is the jecond parcel on the ri ht 620 feet
Owner/Applicant Name Tom Spivey, SEBSD
Consultant Name Qenise Freund WK Dickson & Co Inc
Email
Consultant Contact Information _PH,[phone], EM [phone], dfrgyndttzwkdickson com
Phone, fax email, etc
#1 #2 #3 #4 #5 #6 17 #8
Existing ground elev @basin/trench= 45 5'
SHWT elev = 44.00'
SHWT plus 2' (max bottom elev )= 46 00'
Date/Time of Soils Investigation February 16, 2005 / 10 45 a m
Summary/Comments /d w �0,44
611
/ / 11c1k "1/0r n
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged If these areas are not flagged, the Soils Scientist reserves the right to
decline to do the investigation If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided The soils investigation does not take the place of a soils report prepared by
an appropriate professional The Soils Scientist will only verify the soil conditions that are reported In
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 2H 1000, and assumes no liability should the system fail
b0/Z0 39Vd NQSxaIQ AM T2ZVZ9L0T6 Z5 VT 900Z/0Z/L0

02,
,awe
,e6B 1223
12,7
m
6
b6/EO 3DVd NOSAOIQ AIM IOZPZ9L9T6 ZS bT 999Z/OZ/ZO

02/20/2006 14 52 9107624201 WK DICKSON PAGE 04/04
I it vim_ is \
,#/ 7 C

WK
FACSIMILE DICKSON
communlly inlrestructure ccnsultanls
909 Marker Street Wilmington, North Carolina 28401 910 762 4200 tel [phone] fax
DATE- Z I: • o G
TO. Mr Wme-eni lew;z
AFFILIATION n«OE^V2 - p:--e4
FAX NO 3 SO- Z O O y_
JOB NO sc At-S i4pme b
RE S1WV4T - 14om15 mkwGcj. TEar
+c rss.Tre A 5 t r! Y4 5 1* R1060E sT
MESSAGE VfWai T
1W+40w You 619r Y-mub 1c14tesuc!C0I &,L +4r 1•++ 140-vB Amy
(311 %0 e a{+ • n/ :'L [ A-9 L r Nt A eAt1- . '7 6 8- H z o o
AZ6
FROM SSW 5 E F-C64; 0 NM
W K Dickson & Co, Inc
910 762 4200 tel
910 762 4201 fax
Nymber of pages including cover sheet.
b0/T0 39Vd NOSMOIC >111
TOZVZ9LOT6 Z5 VT 900Z/OZ/Z0

Michael I Easley Governor
William G Ross lr SCLrctary
North Carolina Department of f mironment and Natural Resources
Alan W Klimek i, r Drector
Division of Water Quality
August 29, 2006
Mr Tom Spivey, District Manager
Southest Brunswick Sanitary District
4335 Southport -Supply Road SE
Southport, NC 28461
Subject Request for Additional Information
Stormwater Project No SW8 060840
SEBSD Administration Building
Brunswick County
Dear Mr Spivey
The Wilmington Regional Office received a Stormwater Management Permit Application for
SEBSD Administration Building on August 25, 2006, with a scheduled Express review date of
August 28, 2006 A preliminary review of that information has determined that the application
is not complete The following information is needed to continue the stormwater review
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 ft , however the calculations indicate that 6,697 ft2 has
been provided In direct conflict with this, the calculations use 4,909 ftz 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
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
3 Please dimension each line and arc of the permanent pool contour Overall
dimensions are helpful, but not sufficient
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
Please note that this request for additional information is in response to a preliminary review
The requested information should be received in this Office prior to Septembr 12, 2006, 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
o c
NhCat olrna
Naturally
North Carolina Division o1 Water Quality 127 Cardinal Drive rxtc asion Wilmington NC 28405 Phone [phone] Customer Suvtce
Wilmington Regional Office Internet wwµ newnterquahiy org I'ax [phone] 1 877 623 6748
An Equal OpportunitylAffinnative Aclion Employer — 50% Recycled110% Post Consumer Paper

7479
Mr Spivey
August 29, 2006
Stormwater Application No SW8 060840
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 revised and 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,
Linda Lewis
Environmental Engineer
ENBlarl S1WQSISTORMWATERIADDINFO120061060840 aug06
cc Denise Freund, P E , WKDickson
Linda Lewis
Page 2 of 2

i_ I
OF 06054v
�
Permit No f5wuQ -�R"'
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water QuaW
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan subrruttal includes an application form, a wet detention basin supplement for
each basin, design calculations, and plans and specifications showing all basin and outlet structure details
1 PROJECT INFORMATION
Project Name Administration Building for the Southeast Brunswick Sanitn District
Contact Person
Denise Freund, PE Phone Number 910-762-4200
For projects with multiple basins, specify which basin this worksheet applies to
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
other parameters
S A/DA'
Diameter of Onfice
Design Rainfall
Design TSS Removal
Footnotes
39 ft
43 ...._ ft
44 ft
4,892 sq ft
ac
1309 ac
(floor of the ba vin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
8,540 cu ft (combined volume of main basin and forebay)
426 cu ft (volume detained above the permanent pool)
1,823 cu ft (approximately 20% of total volume)
620 (surface area to drainage area ratio from, DWQ table)
1 in (2 to 5 day temporary pool draw -down required)
l in
90 _. % (minimum 85% required)
When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based
upon the actual impervious % and permanent pool depth Linear interpolation should be employed to determine the
correct value for nonstandard table entries
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to
provide 90% T SS removal The NCDENR BMP manual provides design tables for both 85% TSS removal and 90%
TSS removal
Form SWU-102 Rev 3 99 Pagel of 4

.5U) a, OGX) o (-U
2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3 Specify the type of project (check one)
Low Density _X_ _ High Density Redevelop General Permit Other
4 Additional Project Requirements (check applicable blanks)
CAMA Major X Sedimentation/Erosion Control 404/401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
III PROJECT INFORMATION
1 In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project
Stormwater will be treated by a wet detention basin designed for 90% TSS removal from the first
one inch of rainfall
2 Stormwater runoff from this project drains to the Cape Fear
River Basin
3 Total Project Area 2 982 acres
4 Project Built Upon Area . , 72 %
5 How many drainage areas does the project have9 1
6 Complete the following information for each drainage area If there are more than two drainage areas in the
project, attach and additional sheet with the information for each area provided m the same format as below
Basin Information
Drainage Area to Pond
Drainage Area 2
Receiving Stream Name
Beaverdam Creek
Receiving Stream Class
SC, SW' H W
Drainage Area
78,900 SF
Existing lm ervious*Area
N/A
Proposed Impervious* Area
57,000 SF
% Impervious* Area Total
72 %
Im ervious* Surface Area
Drainage Area 1
Drainage Area 2
On -Site Buildings
16,500 SF
On -Site Streets
N/A
On -Site Parking
38,200 SF
On -Site Sidewalks
1,300 SF
Other On -Site
1,000 SF
Off -Site
NA
Total 57 000 SF
Total
*Impervious area is defined as the built upon area including, but not limited to buildings, roads parking areas,
sidewalks gravel areas etc
Farm S WU-101 Version 3 99 Page 2 of 4

ARAL
NCDENR 4
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive, Wilmington NC 28405 [phone] FAX [phone]
Request for Express Permit Review
FILL-IN all Information below and CHECK required Permit(s).
FAX or small to Cameron. WeaverAncmail.net along with a narrative and viclnrty man of the protect location.
Projects must be submitted by 9:00 A.M. of the review date, unless prior arrangements are made.
APPLICANT Name Mr Tom Spivey
Company Southeast Brunswick Sanitary District.__..
Address 4335 Southport -Su ly Rd SE CitylState Southport, NC Zip 28461 County Brunswick
Phone [phone] Fax [phone] Email spiveytanibelisouthnet
PROJECT Name__ _ - Southeast Brunswick Sanitary District Administration Buildin
PROJECT SYSTEM(S) TRIBUTARY TO Beav_erdam Creek (STREAM NAME) _Cape Fear RIVER BASIN
ENGINEER/CONSULTANT _
Company Denise Freund - W Dickson & Co Inc
Address 909 Market Street CitylState Wilmin ton NC Zi 28401 County New Hanover
Phone _ _(910)762-4200 Fax_ [phone] Email dfreundtia�wkdlckson.com
State or National Environmental Policy Act (SEPA, NEPA) -- EA or EIS Required ❑ Yes E No
❑ STREAM ORIGIN Determination; # of stream calls, Stream Name
® STORMWA TER ❑ Low Density ® High Density -Detention Pond ❑ High Density -Other
Wetlands MUST be addressed below ❑ Low Density -Curb & Gutter ❑ High Density -Infiltration ❑ Off Site
❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
® LAND QUALITY ® Erosion and Sedimentation Control Plan with 3 A acres to be disturbed
--------------- ---------------- ------------------ ---------------------------------------------------- -------------------------- ----------- -----------------------------
WETLANDS (401) Wetlands on Property ❑ Yes ® No Isolated Wetlands on Property ❑ yes ® No
Check all that ggly Wetlands Will Be Impacted ❑ Yes ® No Welland impacts. Acre(s)
Wetlands Delineation has been completed ® Yes ❑ No ❑ Buffers Impacted Acre(s)
~ USA COE Approval of Delineation completed ® Yes ❑ No
404 Application In process w/USACOE ❑Yes ®No I Permit received from USACE [-]Yes ❑No
401 Application required ❑Yes ® No If Yes, ❑ Regular ❑ Express
Additional fees, not to exceed 50% of the original Express Review permit application fee, may be charged for
subsequent reviews due to the Insufficiency of the permit applications.
For DENR use only
SUBMITTAL DATES. Fee Split for multiple permits
SW $
CAMA $
LQS $
401 $ Total Fee Amount $

Sire
J�
Sl lames r
IKE
MA
IOZ
J
1 MMM
I 2Z ]229
M
HLO
.0
x

Area to be disturbed: 3.0 acres
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
EROSION CONTROL MEASURES: This protect will primarily control erosion with temporary
protection using silt fence, drop inlet protection, check dams, temporary and permanent
vegetation, and a temporary construction entrance
The contractor shall install, maintain and remove, upon completion erosion control measures as
necessary to prevent any sediment from leaving the protect limits This will include any temporary
stockpile areas if necessary. Contractor shall clean and restore to pre -construction conditions any
areas that may inadvertently be damaged due to the failure of the erosion control measures
SCHEDULING OF WORK- A temporary construction entrance will be installed, followed by silt
fence, check dams, and drop inlet protection that shall be installed as directed by the erosion
control plan The pond will be graded for use as a temporary sediment trap Excavation and
embankment operations will be conducted such that cuts and fills will be completed to final
grades in a continuous operation. All construction areas not otherwise protected shall be planted
with permanent vegetative cover in accordance with the specifications within 21 working days of
completion of any phase of grading Upon completion of grading activities, the pond will be
graded to the design depth
MINIMUM AREAS TO BE DISTURBED Only those areas necessary for timely and proper
completion of the protect shall be stripped of native vegetation. The angle for graded slopes and
fills shall be no greater than the angle, which can be retained by vegetative cover or other
adequate erosion control devices or structures Slopes left exposed will, within 21 working days
of completion of any phase of grading, be planted or otherwise provided with ground cover,
devices, or structures sufficient to restrain erosion.
PLACEMENT OF SEDIMENT CONTROL DEVICES- All devices (silt fence, drop inlet protection,
construction entrance, check dams, etc.) for sediment control shall be constructed prior to any
development on the property.

EROSION CONTROL NARRATIVE
Administration Building
For the
Southeast Brunswick Sanitary District
Brunswick County, NC,
July 2006
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 Beaverdamn 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

STORMWATER NARRATIVE
Administration Building
for the
Southeast Brunswick Sanitary District
Brunswick County, NC
July 2006
W. K, Dickson & Co., I nc
909 Market Street
Wilmington, North Carolina 28401
[phone]

SITE
0
0
7pp
iL
�Q
NC HWY 211 TO SOUTHPORT
TO SUPPLY Of
+- 2 MILES
w
O
�y
v =
VICINITY MAP
NOT TO SCALE
SOUTHEAST BRUNSWICK SANITARY DISTRICT
ADMINISTRATION BUILDING
BRUNSWICK COUNTY, NORTH CAROLINA