SW8060305_COMPLIANCE_20060309 (2)

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

DETENTION POND ANALYSIS FILE NAME: G:IDATAIWPDATAIWQSIPOND1060305.WK1
PROJECT #: SW8 060305 REVIEWER: R. Gordon
PROJECT NAME: Gordon Road Storage
DATE: 09-Mar-06
ReceivingStream: Smith Creek Class: C;Sw
Drainage Basin: Cape Fear Index No. 18-74-63
Site Area 7.07 acres
Drainage Area 1772'89 square feet Area = 4.07 acres
IMPERVIOUS AREAS
Rational C
Buildings 76675.00 square feet
Paved 32232.00 square feet
Sidewalks 293.00 square feet
square feet
square feet
square feet
TOTAL 1C19200i0 square feet Rational Cc= 0.08
SURFACE AREA CALCULATION
IMPERVIOUS
61.59%
SAIDA Ratio
3.48%
Des. Depth
6
Req. SA
6169 sf
TSS:
90
Prov. SA
81.1;1: sf
VOLUME CALCULATION * place a "1" in the box if Rational is used
Rational ?*
Des. Storm
inches
Rv=
0.60
Bottom
35.6 msI
Perm. Pool
::1 6'<: msl
Design Pool
42.8 msl
Design SA
10640 sf
Req. Volume
": 892?;
cf
Prov. Volume
' .........:.' .1251
cf
ORIFICE CALCULATION
FOREBAY
Perm. Pool Volume=
Req. Forebay Volume=
Provided Volume=
Percent=
SA @ _
Elevation=
20653
4130.E
3912.00
Avg. Head =
0.57 ft
Q2 Area =
2.04
sq. in.
Flow Q2, cfs
0.052 cfs
Q5 Area =
0.82
sq. in.
Flow Q5, cfs
0.021 cfs
Orifice Area
1.23
sq. in.
No. of Orifices
1:
Q=
0.031
cfs
Diameter, inches
,: .........
weir H x W
in
x
in
Drawdown =
3..3.::
days
COMMENTS
Surface Area , Volume and Orifice are within Design Guideline:

CAPE FEAR RIVER BASIN
Namc ol'Stream
Subbasin Strearn Index Numbcr Map Number Class
Smith Creek
CPF23
18-74-63
J27SE7
C;SW
Smith Swamp (,Tones Lake Drain)
CPF16
18-46-7
I24NE4
C
Smiths Creek
CPF10
17-34
E21SE8
WS-IV
Smiths Mill Pond Run {Smiths Mill Pond)
CPF18
18-68-12-14
125NW2
C;SW
Smokehouse Creek
CPF17
18-BB-11
L26NE9
SC;HQW
Snows Cut
CPF17
1B-87--31.5
K27SW6
SC
Snows Cut
CPF24
16-87-31.5
K27SW6
SC
Snows Marsh
CPF17
18-88-2
L27NW1
Sc
South Buffalo Creek
CPF02
16-11-14-2
C19SW6
C;NSW
South Fork Cane Creek
CPF04
16-25-5
D21SW6
C;NSW
South Prong Anderson Creek
CPF14
18-23-32-2
F23SW8
C
South Prong McLeod Creek
CPF14
18-23-29-1-2
F22SEG
C
South Prong Richland Creek
CPF09
17-22-2
E19SE3
C
South Prong Stinking Quarter Creek
CPF03
16-19-8-2-(2)
D20NE5
C;NSW
South Prong Stinking Quarter Creek
CPF03
16-19-8-2-(1)
D20NE5
B;NSW
(Kimesville Lake)
South River
CPP12
18-68-12-(0.5)
G24NW6
C;Sw
South River
CPF18
16-68-12-(B.5)
H24NE9
C;Sw,ORW:+
Southport Restricted Area
CPF17
18-88-3.5
L27NW4
SC
Spearmans Mill Creek
CPF19
18-68-2-15
H25SE6
C;Sw
Spring Branch
CPF16
18-46-3
H24SE7
C
Spring Branch
CPF18
18-68-12-2-4-1-2
G24NE2
C;Sw
Spring Branch
CPF23
18-74-63-1
727SE7
C;Sw
Spring Valley Lake
CPF14
18-23-6
F21SW9
WS-III,B
Squash Branch
CPF17
18-76-1-4
K27NW2
C;SW
Squirrel Creek
CPF02
16-11-8-(1)
C19NE6
WS-I1I;NSW
Squirrel Creek
CPF02
16-11-8-(2)
C19NE6
WS-III;NSW,CA
Squirrel Creek
CPF09
17-22-6
E19NE6
C
Stagg Creek
CPF02
16-18-2-(0.5)
C21NE6
WS-II;HQW,NSW
Stagg Creek
CPF02
16-18-2-(2)
C21NE9
WS-II;HQW,NSW,CA
Staley Creek
CPF02
16-15-1
C21SW2
C;NSW
Starlins Swamp
CPF18
18-68-12-2-4-1
G24NE1
C;SW
Steep Bottom Creek
CPF05
16-41-1-4
C22SE7
C;NSW
Steep Run
CPF16
18-58
J25NE4
WS-IV
Stephens Swamp
CPF22
18-74-25-2
H28NW7
C;SW
Stewart Creek
CPF07
18-21-1
F24NW9
C
Stewarts Creek
CPF25
18-31-21
G22SE7
C
Stewarts Creek
CPF15
18-31-24-5-4
G22SE3
C
Stewarts Creek
CPF19
18-68-2-10
H26HE4
C;Sw
Stewarts Creek
CPF22
18-74-19-13-2
G27SW4
C;Sw
Stewarts Creek (Byrd Mill Pond)
CPF14
18-23-33
F23SE9
C
Still Creek
CPF17
18-88-8-2-2
L27NW7
SA;HQW
Stinking Creek
CPF04
16-39-(1)
E22NW9
WS-IV;NSW
Stinking Creek
CPF04
16-39-(2)
E22NS4
WS-IV;NSW,CA
Stinking Quarter Creek
CPF03
16-19-8
C21SW7
C;NSW
Stockinghead Creek
CPF22
18-74-24
H27NW8
C;Sw
Stony Branch
CPF13
18-20-18
F23SW2
C
Stony Branch
CPF14
18-23-16-8-4
F22SW4
WS-III
Stony Creek
CPF02
16-14-(8.5)
C21NW9
WS-V
Stony Creek
CPF02
16-14-(9)
C21SW3
C;NSW
Stony Creek
CPF07
18-4-6
E22SE7
WS-IV
Stony Creek (Lake Burlington)
CPF02
16-14-(1)
C21NWG
WS-II;HQW,NSW
Stony Creek (Stony Creek Reservoir)
CPF02
16-14-(5.5)
C21NW6
WS-II;HQW,NSW,CA
Stony Run (Hannas Pond)
CPF18
18-68-12-2-2
F24SE4
C;Sw
Strauss Canal (Strauss Swamp)
CPF17
18-64-7-2-1
J25SE4
C;Sw
Stump Sound
CPF24
18-87-3
J29NW1
SA;ORW
Stump Sound ORW Area
CPF24
18-87-0.5
J29NW2
SA;ORW
Page 24 of 28

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0 0.1 0.2 0.3 0.4 0.5 mi
Map center is 340 16' 00"N, 770 50' 13"W (WGS84/NAD83)
Scotts Hill quadrangle M=-9 , 046
Projection is UTM Zone 18 NAD83 Datum G=-1.599
http://www.topozone.com/print.asp?z=18&n=3795366.86760735&e=238796.461980878&s... 3/9/2006