SW8070243_COMPLIANCE_20071018

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 63e %/7 3
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
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aU7%Z/,U
YYYYMMDD

WET DETENTION POND ANALYSIS
FILE NAME S 1WQSISTORMWATERIEXCELSPREADSHEETSIPOND1070243-1 WK1
PROJECT # SW8 0702S� , �REVIEWER P`Bartlett a
POND #1
r�Ur
DATE 18-Oct-07
PROJECT NAME [akk,ek at Maritime Shores , � j
Receiving Stream
Drainage Basin
Site Area
Drainage Area
Class
Index No
'614'Il acres
28401„1 00 ,square feet DA Area Acres 652
IMPERVIOUS AREAS Rational C
Buildings �� ' S4014�010square feet 095
Streets'=`€'I3690square feet 0 95 b
SW
Other(Amenay)
TOTAL
SURFACE AREA CALCULATION
square feet
square feet
square feet
square feet
square feet
108028 00 square feet
095{I�
095
Rational Cc= 049
% IMPERVIOUS
38 04%
SA/DA Ratio 2 38%
Des Depth*
5
Req SA 6766
sf
TSS, 85 or 90aryBie�a�,,
,, ,= 90
Prov SA
E ; , s 8511 , sf
'pond permitted 2/16/06 before avg depth enforced
VOLUME CALCULATION
* place a "1" in the box if Rational is used
Rational '?*
ixze°'�'�,`'�
FOREBAY
Des Storm
;6��;��� I��; �� ,, w1300
inches
Perm Pool Volume=
8104,G,!j,
Rv=
0 392
Req Forebay Volume=
36208
Bottom
'`,°'� '�F�,M4, 3,1'15
msl
Provided Volume=
�=3i 3957'00, `3
Perm Pool
��,�z��,oe=;°�37°00'
msI
Percent=
21 9%
Design Pool
�,�����,`,`p``�40
msl
Storage met @elev 37 87 msl
Elevation Area
Inc Vol Acc. Vol
Req Volume
9285
cf€'437�00,°`;
j,ry . 851 �1 00
ns `
'
000
Vol Prov at DP
31893
cf
i' `� 'I I'''�� ' 1
. '40*QO �� ^ ,;w127,51. OQ ,
31893 00 31893 00
ORIFICE CALCULA
Avg Head =
1�48, ft
Q2 Area =
1 32
sq
inches
Flow Q2, cfs
0 054 cfs
Q5 Area =
053
sq
inches
Flow Q5, cfs
0 021 cfs
Orifice Area
079
sq
inches
No of Orifices
Q=
0 032
cfs
Diameter, inches
weir H x W
in
x
in
Drawdown
`��.,'i�3'4� days
Surface Area @DP =
12751 sq ft
FaI1Eng eH atlwn Rom`
16� 2 clays
C= 3377575758
L= -0 296
COMMENTS
Surface Area , Volume and Orifice are within Design Guidelines

-A.
4,
r
WET DETENTION POND ANALYSIS
FILE NAME S IWQSISTORMWATERIEXCELSPREADSHEETSIPOND1070243-2 WK1
PROJECT # SW8 ff7024�'��`�3-2fi';� REVIEWER P Bargie#t
POND #2
PROJECT NAME Qak"Creek at',Maritime Shors3=�i 3' Ig DATE 18-Oct-07
Receiving Stream
Drainage Basin
Site Area
Drainage Area
Class C,,SW �I 44,
�I
Index No 18,81„7�1�3',3
t
5'P' 01 ,If130 fit acres
1,',2,�r','57935`00,'j square feet DA Area Acres 1 33
IMPERVIOUS AREAS Rational C
Buildings 1a'; 1P5663'00 square feet 095
i { f ,�,., -,I , , , It
Streets �� MA 326 00 square feet 0 95 � �i
SWI's�I"+`�tiII1�I1,`�i square feet 095
!� �
Other(Amenity) e�l�il �i square feet 095
Gay:;vI�I
36 ; rf � square #eet
t o �11 1 1�
r �N square feet
l�,t� 3 ��i
�0e00�r square feet
TOTAL 1 16989 00 Isquare feet - Rational Cc= 042
SURFACE AREA CALCULATION
% IMPERVIOUS 29 32% SA/DA Ratio 2 64%
Des Depth* ;gam', 13,E ,li,; "_;, 4 Req SA 1529 sf
TSS, 85 or 90 V�l-4€90 Prov SAsf
*Application received 2/28/07 before avg depth enforced
VOLUME CALCULATION * place a "1" in the box if Rational is used
Rational*
'`3'`
FOREBAY
Des Storm
d ��� ,. `,�'",�`1'00,: inches
Perm Pool Volume= `3`r`,`(5407,yV
` Rv=
0 314
Req Forebay Volume=
10814
Bottom
Provided Volume=
1,1006007
Perm Pool
{ '45'100 msl
Percent=
18 6%
Design Pool r,,, 45,35 msl
Storage met @elev 45 34 msl
Elevation Area
Inc Vol Acc Vol
Req volume
1516 cf
1cf
�,n� a
, 45'00 `' 1 31`4 007
'r::3s,'145`35;E''EI''9��`4672�Dj0�'I�
000
Vol Prov at DP
1573
. J �
1572 55 1572 55
ORIFICE CALCULATION
Avg Head =
016
ft
Q2 Area =
0 66
sq
inches
Flow Q2, cfs
0 009
cfs
Q5 Area =
0 26
sq
Inches
Flow Q5, cfs
0 004
cfs
Orifice Area
0 44
sq
Inches
No of Orifices
;'','4�,'I!;�1�'
Q=
0 006
cfs
Diameter, Inches
!_; j' '13"0 7,51,
weir H x W
in
x
w
in
Drawdown =
3 0
days
Surface Area @DP =
4672 sq ft
Falling Head Drawdown =
4 2 days
C= 32859375
L= -0 032
COMMENTS
Surface Area , Volume and Orifice are within Design Guidelines

1 1
rf
i
CURB AND GLITTER ANALYSIS
FILE S IWQSISTORMWATERIEXCEL SPREADSHEETSIC&G1060134Mod
PROJECT NUMBER SW8 060134Mod DATE 01-Oct-07
PROJECT NAME Oak Creek at Maritime Shores, Phase 1 & Phase 2
RECEIVING STREAM Bishop Branch CLASS C, Sw
DRAINAGE BASIN CFR INDEX 18-81-7-1
Reviewer P Bartlett
A= BY+MY 1, m/hr= 7 D
I �b�
P= B + 2Y (1 + M^2)^0 5 n= 0 027
R= A/P M= 5
FLOWRATE I VELOCITY COMPUTATION
Q=CIA
<= 05
V=Q/A
Swale #
DA
BUA
C
Q
Slope
Velocity
acres
acres
LC
(fps)
1
07
029
052
256
00258
374
2
096
019
035
238
00436
389
3
048
014
043
144
005
299
4
098
027
041
285
002
294
A
181
076
053
668
00025
161
B
203
09
055
776
00086
269
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NORMAL DEPTH COMPUTATION
SWALE # B Y A P R Zav Zreq
1
0
037
068
377
018
022
029
2
0
035
061
357
017
019
021
3
0
031
048
316
015
014
012
4
0
044
097
449
022
035
036
A
0
091
414
928
045
242
242
B
0
076
289
775
037
1 50
1 52
7
000
000
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8
000
000
#DIV/01
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9
000
000
#DIV/01
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#DIV/01
10
000
000
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�rl'7F*TeI014A&*j*@3I;1L#OI•L`I:2 W-11L,
ALLOWABLE VELOCITY, fps, for slopes 0%-5%, easily erodible soil
Bermuda EI E E �fl= . !,' , E ' hln' � Bluegrass 45
Fescue 45 Legume 35
Bahia 45
COMMENTS