SW3191105_Millbridge Phase 7E Calculations_12/3/2019

�I�I�C _I<SON
community infrastructure consultants
Millbridge Phase 7E Full Design
WKD # 20170279.00.CL
CALCULATIONS FOR:
Stormwater, Water Quality, Detention &
Erosion Control
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DATE: 9/11/2019 ��`o���\A'®`''��
REV: 11 /12/2019
610 COLONNADE DRIVE CHARLOTTE, NORTH CAROLINA 28205
TEL [phone] FAX [phone] www.WKDickson.com

Millbridge Phase 7E Full Design ►WIC
PROJECT NO.: 20170279.00.cL BY: CJH aw Q 1 <-, I<SC)
DATE: 911112019 T.M.: WGB community intrastructuro consultor-ol,
REVISED: 1111212019 P.M.: WGB PRE/POST DEVELOPMENT CURVE NUMBERS
CURVE NUMBER:
Predeveloped CN
BASIN #1
Cover Type
Area (SF)
%
CN
Wtd. CN
Woods
1285616
0.96
55
53.06
Pavement/Concrete
2716
0.00
98
0.20
Existing Pond
44262
0.03
98
3.26
Total
1332594
56.52
Composite CN
56.52
Use CN =
57
Predeveloped CN
BASIN #2
Cover Type
Area (SF) % CN Wtd. CN
Woods
244766
1.00 55
55.00
Total
244766
1 55.00
Com osite CN
55.00 11
Use CN =
Predeveloped CN
BASIN #3
Cover Type
Area (SF) % CN Wtd. CN
Woods
394879
1.00 55
55.00
Total
394879
1 55.00
Composite CN
55.00 Use CN =
Postdeveloped CN
BMP #1
Cover Type
Area (SF)
%
CN
Wtd. CN
PavemenbConcrete
30159
0.05
98
5.23
Buildings
29200
0.05
98
5.06
Woods/Grass
491821
0.87
58
50.47
Permanent Pool
14026
0.02
98
2.43
Total
565206
1.00
63.19
Com osite CN
63.19 11
=1
Use CN =
63
Postdeveloped CN
BMP #2
Cover Type
Area (SF)
%
CN
Wtd. CN
Pavement/Concrete
52824
0.13
98
12.29
Buildings
143500
0.34
98
33.39
Grass
215086
0.51
61
31.15
Permanent Pool
9762
0.02
98
2.27
Total
421172
1.00
79.10
Composite CN
79.10 11
=1
Use CN =
80
Postdeveloped CN
BMP #3
Cover Type
Area (SF)
%
CN
Wtd. CN
Pavement/Concrete
41885
0.14
98
13.65
Buildings
91000
0.30
98
29.66
Grass
158677
0.53
61
32.20
Permanent Pool
9080
0.03
98
2.96
Total
300642
1.00
78.47
Com osite CN
78.47 11
=1
Use CN =
79

Millbridge Phase 7E Full Design ►WIC
PROJECT NO.: 20170279.00.cL BY: CJH aw Q 1 <—, ICsC)
DATE: 911112019 T.M.: WGB community intrastructuro consultor-ot,
REVISED: 1111212019 P.M.: WGB PRE/POST DEVELOPMENT CURVE NUMBERS
Postdeveloped CN
BYPASS POI #1
Cover Type
Area (SF)
%
CN Wtd. CN
Water Surface
44262
0.18
98
17.86
Woods/Grass
198634
0.82
58
47.43
Total
242896
1.00
65.29
Composite CN
65.29 11
=1
Use CN =
Postdeveloped CN
BYPASS POI #2
Cover Type
Area (SF) % CN Wtd. CN
Woods/Grass
50517
1.00
58.00
Total
50517
1.00
58.00
Com osite CN
58.00
Use CN = 58
Postdeveloped CN
BYPASS POI #3
Cover Type
Area (SF)
%
CN Wtd. CN
Woods/Grass
14071
0.04
58
2.08
Woods
377693
0.96
55
53.02
Total
391764
1.00
55.11
Composite CN
55.11 11
=1
Use CN = 55

Millbridge Phase 7E Full Design
MWK
1-->I KSQIV
corriinunily ri[rost—cl—e consullonls
PROJECT NO.: 20170279.00.cL
BY: CJH
DATE: 911112019
T.M.: WGB
REVISED: 1111212019
P.M.: WGB
IMPERVIOUS CALCULATIONS
Impervious Calculations for Basins
BMP 1
Drainage Area 12.98 acres
Impervious Areas
# Lots sf/lot
Right of Way (paving, curb, sidewalk)=
27443 sf
8 3650 52'
Lots (building, sidewalk, concrete patios, driveways, etc.)=
29200 sf
Total Impervious=
56643 sf
Percent Impervious=
10.02%
BMP 2
Drainage Area 9.67 acres
Impervious Areas
Right of Way (paving, curb, sidewalk)=
52824 sf
# Lots sf/lot
Lots (building, sidewalk, concrete patios, driveways, etc.)=
143500 sf
41 3500
Total Impervious=
196324 sf
Percent Impervious=
46.61%
BMP 3
Drainage Area 6.90 acres
Impervious Areas
Right of Way (paving, curb, sidewalk)=
41885 sf
# Lots sf/lot
Lots (building, sidewalk, concrete patios, driveways, etc.)=
91000 sf
26 3500
Total Impervious=
132885 sf
Percent Impervious=
44.20%
75

Millbridge Phase7E Full Design
oft [
PROJECT NO.: 7c JHgn
WN C) I c: ICSc>
DATE: 911112019 T.M.: WGB
cnmmiinity InfrnsTrelr._tiirF r_nnSlilTnnis
REVISED: 1111212019
P.M.: WGBIJ
I DRAINAGE AREA & WETPOND SUMMARY
STORM WATER
PRE-DEVELOPMENT/POST-DEVELOPMENT TABLE
2 YEAR
10 YEAR
PRE CFS
POST CFS
DELTA
PRE CFS
POST CFS
DELTA
POI #1
4.10
3.26
-0.84
26.49
13.13
-13.36
POI #2
0.43
0.26
-0.17
3.68
1.58
-2.1
POI #3
0.77
0.76
-0.01
6.77
6.71
-0.06
Free Board Check
Peak Elv. (50YR)
Top of Berm
Freeboad (ft)
BMP 1
570.47
573.00
2.53
BMP 2
562.91
565.00
2.09
BMP 3
572.86
575.00
2.14
• Per Town of Waxhaw Stormwater Design Manual a minimum of 0.50' freeboard required
• Per NCDEQ Stormwater Design Manual a minimum of 1.00' freeboard required
PRE -DEVELOPMENT AREA
DRAINAGE BASIN
AREA AC.
Pre #1
30.59
Pre #2
5.62
Pre #3
9.07
Total
45.28
POST -DEVELOPMENT AREA
DRAINAGE BASIN
AREA AC.
BMP #1
12.98
By -Pass #1
5.58
BMP #2
9.67
BMP #3
6.90
B -Pass #2
1.16
By -Pass #3
8.99
TOTAL
45.28

Millbridge Phase 7E Full Design
�W]C
'ROJECT NO.: z017oz79.00.cL BY: CJH
)ATE: 9/11/2019
T.M. WGB
unrTv tnrrosTrucTura conaurTonra
REVISED: 1111212019
P.M.: WGB
WATER QUALITY BASIN CALCULATIONS - WETPOND 1
WATER QUALITY REQUIREMENTS
To meet the Water Quality requirements, the procedure outlined in the "Stormwater Best
Management Practices' published by NCDENR will be used. This guide gives the
required pond surface area and storage volume to meet an 85% pollutant removal
efficiency. Also, the pond must detain the first 1" of rainfall and release this volume
over a period of 2 to 5 days. Calculations for these requirements are as follows:
Surface area requirements
Drainage area to pond (Da)= 12.98 Ad
Post -development impervious percentage = 10%
Average pool depth = 5 ft
Designed permanent pool elevation = 566.5
Interpolation to find required SA/DA ratio for non whole number
Storage
Depth volume
5 0.37
5 0.37
6 0.30
From table 1.1 in the BMP guidelines the required Surface Area to Drainage Area
Ratio (SA/DA) for a permanent pool depth = 0.37
Required surface area = SA/DA / 100 x Drainage area=
0.05 Ad
Surface area of pond as designed at permanent pool elevation =
0.2372 Ad
1" rainfall requirements
Using the runoff volume calculations in the "Simple Method"
Rv=0.05+0.9(I)
Rv= 0.140194902 in/in
Volume = (Design rainfall) (Rv) (Drainage Area)
Volume = 1" rainfall x Rv in/in x 1/12 in/ft x Da =
or
0.15 ac-ft
This volume must be released over a period of 2-5 days
6603 ftA3
As designed pond areas
Storage Volumes
Cumulative
Elevation
Area(ac)
Volume(ac-ft)
566.5
1.286444289
0.00
567
1.43383385
0.68
568
1.812641655
2.30
569
2.236960825
4.32
570
2.708268612
6.78
571
3.228043075
9.74
=orbay Volume (CF 10529
Total Volume (CF) 56038
Forebay % of Ponc 18.79 %
% PERMANENT POOL DEPTH
Impervious 3 4 5 6 7
10
0.51 0.43
0.37
0.3
0.27
0.25
20
0.84 0.69
0.61
0.51
0.44
0.4
30
1.17 0.81
0.84
0.72
0.61
0.56
40
1.51 1.22
1.09
0.91
0.78
0.71
50
1.79 1.47
1.31
1.13
0.95
0.87
60
2.09 1.73
1.49
1.31
1.12
1.03
70
2.51 2.04
1.8
1.56
1.34
1.17
80
2.92 2.36
2.07
1.82
1.62
1.4
90
1 3.25 2.64
2.31
1 2.04
1 1.84
1.59
2094.2
Permanent Pond Storage Volume
Elevation
(msl)
Forebay
(sf)
Forebay
(ac)
FB Volume
(cu-8)
FB Volume
(ac-8)
Pond
(sf)
Pond
(ac)
Pond Volu
(cu-ft)
Pond Volume
(ac-ft)
557
F-70-0-00-01
0
0.0000
558
0.0000
0.0000
3708
0.0851
1235
0.0283
��
559
0.0000
0.0000
4274
0.0981
5218
0.1198
��
560
0.0000
0.0000
4872
0.1118
9784
0.2246
��
561
0.0000
0.0000
5502
0.1263
14962
0.3435
��
562
1256
0.0288
0.0096
6164
0.1415
20786
0.4772
00
563
1703
0.0391
1472
0.0000
6858
0.1574
27288
0.6264
��
564
2182
0.0501
3408
0.0444
7585
0.1741
34499
0.7920
00
565
2695
0.0619
5840
0.1003
8343
0.1915
42452
0.9746
��
566
'0
0.0744
8799
0.1682
9134
0.2097
51179
1.1749
00
566.5
0.0848
10529
0.2079
10333
0.2372
56038
1.2864
��
567
����
15551
0.3570
62458
1.4338
��
568
����
17503
0.4018
78959
1.8126
��
569
����
19519
0.4481
97442
2.2370
��
570
����
21600
0.4959
117972
2.7083
��
571
����
23745
0.5451
140614
3.2280
��
572
����
25954
0.5958
165430
3.7978
��
000�0
28228
0.6480
192486
4.4189
00
Interpolation to find elevation at which required storage volume is reached
Storage
Storage Storage
Elev volume
area (ac.) area (sf.)
566.5 0.00
1.29 56037.51
Elev 0.15
1.32 57471
567 0.68
1.43 62457.8
Elev= 566.61
Storage elevation =
0.11 feet above permanent pool elevation
Determination of Orifice size for 2-5 day drawdown
a= 2A x sgrt(h)
`Falling head equation
Ct(sgrt(2g))
a= Area of orifice
a sqft
t= Time to drawdown
259200 sec
A= Average pond surface area
33902 sf
g= Gravity constant
32.2 ft/s"2
h= Change in head
0.11 ft
C= Orifice constant
0.6
Maximum orifice area =
0.02 sqft
Maximum orifice size =
1.8 inches
Selected orifice size =
1.75 inches
Assume 2 day minimum
(3 day drawdown)

Millbridge Phase 7E Full Design
WK
MpEA4z:KSC>p4
community infrastructure consultants
PROJECT NO.: 20170279.00.cL
BY: CJH
DATE: 911112019
T.M.: WGB
REVISED: 1111212019
P.M.: WGB
FLOATATION CALCULATIONS - BMP #1
CONSTRAINTS:
Weight of Concrete 150 Ibs/ft^3
Weight of Water 62.4 Ibs/ft^4
Safety Factor (S.F.) 1.1
Height of structure 9.2 ft
Structure thickness 6 in
Outlet box width (interior) 4 ft
Weight of outlet structure(Ws)
Ws = (width + thickness x 4) x thickness x height x weight of concrete =
Weight of water displaced
Size Base
Footing size
Ww = ((width + 2 x thickness)^2) x Weight of water height =
Wb = (S.F. x Ww) - Ws = 3367 Ibs
Required concrete = Wb / (Weight of concrete -weight of water) =
*Assume base is 6" wider than exterior box width and minimum thickness is 8
Thickness of base = 1.27 ft
Length = 6.00 ft
Width = 6.00 ft
Thickness = 1.50 ft
14352 Ibs
38 cuft
12420 Ibs

Millbridge
Phase 7E
Full Design
p►WI<
PROJECT NO.:
20170279.00.CL
BY: CJH
w DI KSC)IN
DATE:
911112019
T.M.: WGB
community Infrostructwe consuitonts
REVISED:
1111212019
P.M.: WGB
PRELIMINARY CALCULATIONS
ANTI -SEEP COLLARS
BMP #1
Pipe Diameter 36 in
Length of Covered Pipe 188 ft
Number of Collars 8
Anti -Seep Collar Sizes
Length: 6.70 ft
Width: 6.70 ft
Note: Anti -seep collars are centered on pipe

Vlillbridge Phase 7E Full Design
'ROJECT NO.: 20170279.00.cL BY: CJH
)ATE: 9f11/2019 T.M.: WGB Unily int-sti-tu- -swt-ts
tEVISED: 1111212019 P.M.: WGB WATER QUALITY BASIN CALCULATIONS- WETPOND 2
WATER QUALITY REQUIREMENTS
To meet the Water Quality requirements, the procedure outlined in the "Stormwater Best
Management Practices" published by NCDENR will be used. This guide gives the
required pond surface area and storage volume to meet an 85 k pollutant removal
efficiency. Also, the pond must detain the first 1" of rainfall and release this volume
over a period of 2 to 5 days. Calculations for these requirements are as follows:
Surface area requirements
Drainage area to pond (Da)= 9.67 Ac
Post -development impervious percentage = 47
Average pool depth = 3.5 ft
Designed permanent pool elevation = 558.5
Interpolation to find required SA/DA ratio for non whole number
Storage
Depth volume
3 1.70
3.5 1.54
4 1.39
From table 1.1 in the BMP guidelines the required Surface Area
to Drainage Area
Ratio (SA/DA) for a permanent pool depth =
1.54
Required surface area = SA/DA / 100 x Drainage area=
Surface area of pond as designed at permanent pool elevation =
I" rainfall requirements
Using the runoffvolume calculations in the "Simple Method"
Rv = 0.05 + 0.9 (1)
Rv= 0.469523615 in/in
Volume = (Design rainfall) (Rv) (Drainage Area)
Volume = 1" rainfall x Rv in/in x 1/12 in/ft x Da =
This volume must be released over a period of 2.5 days
As designed pond areas:
Storage Volumes
Cumulative
Elevation Area(ac) Volume(ac-ft)
558.5 0.618875928 0.00
559 0.724847237 0.34
560 1.004347196 1.20
561 1.329071038 2.36
562 1.700643829 3.87
563 2.120621458 5.77
564 2.590572053 8.12
565 3.112076105 10.97
Forbay Volume (CF) 5030
Total Volume (CF) 26958
Forebay k of Pond 18.66%
0.15 Ac
0.1695 Ac
or 0.38 ac-ft
16479 ft^3
PERMANENT POOL DEPTH
Impervious 5 6 7 8
10
0.51
0.43
0.37
0.3
0.27
0.25
20
0.84
0.69
0.61
0.51
0.44
0.4
30
1.17
0.81
0.84
0.72
0.61
0.56
40
1.51
1.22
1.09
0.91
0.78
0.71
50
1.79
1.47
1.31
1.13
0.95
0.87
60
2.09
1.73
1.49
1.31
1.12
1.03
70
2.51
2.04
1.8
1.56
1.34
1.17
80
2.92
2.36
2.07
1.82
1.62
1.4
90
3.25
2.64
2.31
2.04
1.84
1.59
6487.161
Permanent Pond Storage Volume
Elevation
(msl)
For
(so
Forebay
(ac)
FB Volume
(cu-ft)
FB Volume
(ac-ft)
Pond
(4
Pond
(ac)
Pond Volu
(cu-ft)
Pond Volume
(ac-ft)
553
�
0.0000
�
0.0000
3248
0.0746
����
554
09
0.0025
�
0.0000
3792
0.0871
3513
0.0806
��
555
�
0.0118
343
0.0079
4375
0.1004
7587
0.1742
��
556
960
0.0220
1068
0.0245
4991
0.1146
12262
0.2815
��
557
1441
0.0331
2260
0.0519
5639
0.1295
17569
0.4033
��
558
1956
0.0449
3950
0.0907
6320
0.1451
23539
0.5404
��
558.5
2378
0.0546
5030
0.1155
7384
0.1695
26958
0.6189
��
559
����
11233
0.2579
31574
0.7248
��
560
����
13167
0.3023
43749
1.0043
��
56'.
����
15175
0.3484
57894
1.3291
��
562
����
17251
0.3960
74080
1.7006
��
563
����
19395
0.4452
92374
2.1206
��
564
����
21608
0.4961
112845
2.5906
��
565
����
0000000000
23890
0.5484
135562
3.1121
��
Interpolation to find elevation at which required storage volume is reached
Storage Storage Storage
Elev volume area (ac.) area (sf.)
559 0.34 0.72 31574.35
Elev 0.38 0.74 32184
560 1.20 1.00 43749.36
Elev= 559.05
Storage elevation = 0.55 feet above permanent pool elevation
Determination of Orifice size for 2-5 day drawdown
a= 2A x sgrt(h) 'Falling head equation
Ct(sgrt(2g))
a= Area of orifice
a sqft
t= Time to drawdown
172800 sec
A= Average pond surface area
19784 sf
g= Gravity constant
32.2 ft/s^2
h= Change in head
0.55 ft
C= Orifice constant
0.6
Maximum orifice area =
0.04 sqft
Maximum orifice size =
2.5 inches
Selected orifice size =
2.5 inches
Assume 2 day minimum
2 day drawdown

Millbridge Phase 7E Full Design
WK
MpEA4z:KSC>p4
community infrastructure consultants
PROJECT NO.: 20170279.00.cL
BY: CJH
DATE: 911112019
T.M.: WGB
REVISED: 1111212019
P.M.: WGB
FLOATATION CALCULATIONS - BMP #2
CONSTRAINTS:
Weight of Concrete 150 Ibs/ft^3
Weight of Water 62.4 Ibs/ft^4
Safety Factor (S.F.) 1.1
Height of structure 8.3 ft
Structure thickness 6 in
Outlet box width (interior) 4 ft
Weight of outlet structure(Ws)
Ws = (width + thickness x 4) x thickness x height x weight of concrete =
Weight of water displaced
Size Base
Footing size
Ww = ((width + 2 x thickness)^2) x Weight of water height =
Wb = (S.F. x Ww) - Ws = 3038 Ibs
Required concrete = Wb / (Weight of concrete -weight of water) =
*Assume base is 6" wider than exterior box width and minimum thickness is 8".
Thickness of base = 1.15 ft
Length = 6.00 ft
Width = 6.00 ft
Thickness = 1.00 ft
12948 Ibs
35 cuft
11205 Ibs

Millbridge
Phase 7E
Full Design
p►WI<
PROJECT NO.:
20170279.00.CL
BY: CJH
w DI KSC)IN
DATE:
911112019
T.M.: WGB
community Infrostructwe consuitonts
REVISED:
1111212019
P.M.: WGB
PRELIMINARY CALCULATIONS
ANTI -SEEP COLLARS
BMP #2
Pipe Diameter in
Length of Covered Pipe ft
Number of Collars
Anti -Seep Collar Sizes
Length: 6.65 ft
Width: 6.65 ft
Note: Anti -seep collars are centered on pipe

Aillbridge Phase 7E Full Design ►WIrC+
'ROJECT NO.: 20170279.00.CL BY: CJH _ � I �
)ATE: 9111120191 T.M.: WGB ,nlw lief-fll-turf s ata r�
ZEVISED: 1111212019 P.M.: WGB WATER QUALITY BASIN CALCULATIONS - WETPOND 3
WATER QUALITY REQUIREMENTS
To meet the Water Quality requirements, the procedure outlined in the "Stormwater Best
Management Practices" published by NCDENR will be used. This guide gives the
required pond surface area and storage volume to meet an 85 k pollutant removal
efficiency. Also, the pond must detain the first 1" of rainfall and release this volume
over a period of 2 to 5 days. Calculations for these requirements are as follows:
Surface area requirements
Drainage area to pond (Da)= 6.90 Ac
Post -development impervious percentage = 44
Average pool depth = 3.5 ft
Designed permanent pool elevation = 568.5
Interpolation to find required SA/DA ratio for non whole number
Storage
Depth volume
3 1.63
3.5 1.48
4 1.33
From table 1.1 in the BMP guidelines the required Surface Area
to Drainage Area
Ratio (SA/DA) for a permanent pool depth =
1.48
Required surface area = SA/DA 1100 x Drainage area=
Surface area of pond as designed at permanent pool elevation =
I" rainfall requirements
Using the runoff volume calculations in the "Simple Method"
Rv = 0.05 + 0.9 (1)
Rv= 0.4478037 in/in
Volume = (Design rainfall) (Rv) (Drainage Area)
Volume = 1" rainfall x Rv in/in x 1/12 in/ft x Da =
This volume must be released over a period of 2-5 days
As designed pond areas:
Storage Volumes
Cumulative
Elevation Area(ac) Volume(ac-ft)
568.5 0.536211018 0.00
569 0.635886158 0.29
570 0.887665918 1.05
571 1.170089902 2.07
572 1.484452925 3.40
573 1.832050379 5.05
574 2.214177384 7.07
575 2.632129514 9.49
0.10 Ac
0.1642 Ac
or 0.26 ac-ft
11219 ft^3
PERMANENT POOL DEPTH
Impervious 4 5 6 7
10
0.51
0.43
0.37
0.3
0.27
0.25
20
0.84
0.69
0.61
0.51
0.44
0.4
30
1.17
0.81
0.84
0.72
0.61
0.56
40
1.51
1.22
1.09
0.91
0.78
0.71
50
1.79
1.47
1.31
1.13
0.95
0.87
60
2.09
1.73
1.49
1.31
1.12
1.03
70
2.51
2.04
1.8
1.56
1.34
1.17
80
2.92
2.36
2.07
1.82
1.62
1.4
90
3.25
2.64
2.31
2.04
1.84
1.59
4438.411
Permanent Pond Storage Volume
Elevation
(msl)
For
(sf)
Forebay
ad)
FB Volume
-ft)
FB Volume
(ac-ff)
Pond
(sf)
Pond
ad)
Pond Volu
(­ft)
Pond Volume
(­ft)
564
389
0.0089
�
0.0000
3891
0.0893
����
565
605
0.0139
493
0.0113
4425
0.1016
4151
0.0953
��
566
854
0.0196
1218
0.0280
4990
0.1146
8851
0.2032
��
567
1137
0.0261
2209
0.0507
5586
0.1282
14131
0.3244
��
568
1453
0.0334
3499
0.0803
6214
0.1427
20022
0.4596
��
568.5
1929
0.0443
4341
0.0997
7151
0.1642
23357
0.5362
��
569
����
10331
0.2372
27699
0.6359
��
570
����
11639
0.2672
38667
0.8877
��
571
����
13003
0.2985
50969
1.1701
��
572
����
14424
0.3311
64663
1.4845
��
573
����
15901
0.3650
79804
1.8321
��
574
����
17435
0.4003
96450
2.2142
��
575
00000000000
����
19025
0.4368
114656
2.6321
��
00000000000
Forbay Volume (CF)
4341
Total Volume (CF)
23357
Forebay k of Pond
18.59
Interpolation to find elevation at which required storage volume is reached
Storage Storage
Storage
Elev
volume area (ac.)
area (sf.)
568.5
0.00 0.54
23357.35
Elev
0.26 0.62
27182
569
0.29 0.64
27699.2
Elev=
568.94
Storage elevation = 0.44
feet above permanent pool elevation
Determination of Orifice size for 2-5 day drawdown
a=
2A x sgrt(h)
'Falling head equation
Ct(sgrt(2g))
a=
Area of orifice
a sqft
t=
Time to drawdown
172800 sec
A=
Average pond surface area
17167 sf
g=
Gravity constant
32.2 ft/s^2
h=
Change in head
0.44 ft
C=
Orifice constant
0.6
Maximum orifice area =
0.03 sgft
Maximum orifice size =
2.2 inches
Selected orifice size =
2.0 inches
Assume 2 day minimum
(2 day drawdown)

Millbridge Phase 7E Full Design
WK
MpEA4z:KSC>p4
community infrastructure consultants
PROJECT NO.: 20170279.00.cL
BY: CJH
DATE: 911112019
T.M.: WGB
REVISED: 1111212019
P.M.: WGB
FLOATATION CALCULATIONS - BMP #3
CONSTRAINTS:
Weight of Concrete
150 Ibs/ft^3
Weight of Water
62.4 Ibs/ft^4
Safety Factor (S.F.)
1.1
Height of structure
9.85 ft
Structure thickness
6 in
Outlet box width (interior)
4 ft
Weight of outlet structure(Ws)
Ws = (width + thickness x 4) x thickness x height x weight of concrete =
Weight of water displaced
Size Base
Footing size
Ww = ((width + 2 x thickness)^2) x Weight of water height =
Wb = (S.F. x Ww) - Ws = 3605 Ibs
Required concrete = Wb / (Weight of concrete -weight of water) =
*Assume base is 6" wider than exterior box width and minimum thickness is 8
Thickness of base = 1.36 ft
Length = 6.00 ft
Width = 6.00 ft
Thickness = 1.50 ft
15366 Ibs
41 cuft
13298 Ibs

Millbridge
Phase 7E
Full Design
p►WI<
PROJECT NO.:
20170279.00.CL
BY: CJH
w DI KSC)IN
DATE:
911112019
T.M.: WGB
community Infrostructwe consuitonts
REVISED:
1111212019
P.M.: WGB
PRELIMINARY CALCULATIONS
ANTI -SEEP COLLARS
BMP #3
Pipe Diameter 24 in
Length of Covered Pipe 74 ft
Number of Collars 3
Anti -Seep Collar Sizes
Length: 5.93 ft
Width: 5.93 ft
Note: Anti -seep collars are centered on pipe

SUPPLEMENT-EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project:
Quantity
Location(s)
Infiltration System
0
Bioretention Cell
0
Wet Pond
3
Stormwater Wetland
0
Permeable Pavement
0
Sand Filter
0
Rainwater Harvesting
0
Green Roof
0
Level Spreader -Filter Strip
0
Disconnected Impervious Surface
0
Treatment Swale
0
Dry Pond
1 0
Designer information for this project:
Name and Title:
Organization:
Street address:
City, State, Zip:
Phone number(s):
Email:
Designer
Weston Boles, PE
WK Dickson & Co. Inc.
616 Colonnade Drive
Charlotte, NC 28205
704.334.5348
[e-mail]
Signature of Designer
Date
Applicant:
NEB
Project Name:
Millbridge Phase 7E
Address
City i Town
Waxhaw, North Carolina
Company:
Landeavor, LLC
Contact:
Brad Heavner
Mailing Address:
9101 Southern Pine Blvd. Suite 210
City, State, Zip:
Charlotte, NC 28273
Phone number(s):
704.525.5998
Email:
[e-mail]
Certification Statement:
I certify, under penalty of law: that this Supplement-EZ form and all supporting
information were prepared under my direction or supervision;
- that the information provided in the form is, to the best of my knowledge
and belief, true, accurate, and complete; and
- that the engineering plans, specifications, operation and maintenance
agreements and other supporting information are consistent with
the information provided here.
I am aware that there are significant penalties for submitting false
information including the possibility of fines and imprisonment for knowing
violations as well as a report being made to my professional board.
Cover Page 1 4:34 PM 11/12/2019

WET POND
Millbridge Phase 7E
THE DRAINAGE AREA
Drainage area number
1
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
00 sf
Parking / driveway (sq ft)
Total surface water area (sq ft)
00 sf
Sidewalk (sq ft)
Total drainage area (sq ft)
565206 sf
Roof (sq ft)
BUA associated with existing development (sq ft)
00 sf
Roadway (sq ft)
Proposed new BUA (sq ft)
56643 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
1 10.02 %
ITotal BUA (sq ft)
56643 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
Design rainfall depth (in)
1.0 in
Phase II Post -Construction Stormwater
Minimum volume required (cu ft)
6603 cf
Design volume of SCM (cu ft)
6603 cf
GENERAL MDC FROM 02H .1050
#1 Is the SCM sized to treat the SW from all surfaces at build -out? Yes #7 If applicable, with the SCM be cleaned out after construction? Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H:V)?
3:1
#9 Does the drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)?
Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
1#12 Is there an O&M Plan that complies with General MDC (12)?
Yes
#6 What is the method for dewatering the SCM for maintenance?
Pump (preferred)
1#13 Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 02H .1053
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 It
#1 Surface area of the main permanent pool (square feet)
10333 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
56038 cf
#6 Elevation of top of shelf (fmsl)
567.00 ft
#2 Average depth of the main pool (feet)
5.0 It
#6 Elevation of bottom of shelf (fmsl)
566.00 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
558.00 ft
#7 Diameter of drawdown orifice (inches)
1.75 in
#2 Elevation of the top of the permanent pool (fmsl)
566.50 ft
#7 Drawdown time for the temporary pool (hours)
72 hrs
#2 Elevation of the top of the temporary pool (fmsl)
566.61 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
No
#3 Depth provided for sediment storage (inches)
12 in
#8 Does the pond minimize impacts to the receiving channel from the 1-yr, 24-hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path:
#9 If yes, is documentation provided per Wet Pond MDC (9)?
Forebay Berm Provided
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
10529
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Bermuda
#5 Depth of forebay at entrance (inches)
54 in
911 Describe the planting plan for the vegetated shelf:
#5 Depth of forebay at exit (inches)
54 in
See planting details in construction documents prepared by W.K. Dickson and Company.
#5 Does water flow out of the forebay in a non -erosive manner?
Yes
#5 Clean -out depth for forebay (inches)
12 in
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
Yes
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
Wet Pond 2 4:34 PM 11/12/2019

WET POND
Millbridge Phase 7E
THE DRAINAGE AREA 2
Drainage area number
2
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
00 sf
Parking / driveway (sq ft)
Total surface water area (sq ft)
.00 sf
Sidewalk (sq ft)
Total drainage area (sq ft)
421172 sf
Roof (sq ft)
BUA associated with existing development (sq ft)
00 sf
Roadway (sq ft)
Proposed new BUA (sq ft)
196324 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
146.61 %
ITotal BUA (sq ft)
196324 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
IDesign rainfall depth (in)
1.0 in
Phase II Post -Construction Stormwater
IMinimurn volume required (cu ft)
16479 cf
Design volume of SCM (cu ft)
16479 cf
GENERAL MDC FROM 02H .1050
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
#7 If applicable, with the SCM be cleaned out after construction?
Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H:V)?
3:1
#9 Does the drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)?
Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
#12 Is there an O&M Plan that complies with General MDC (12)?
Yes
#6 What is the method for dewatering the SCM for maintenance?
Pump (preferred)
1#13 Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 02H .1053
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 It
#1 Surface area of the main permanent pool (square feet)
7384 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
26958 cf
#6 Elevation of top of shelf (fmsl)
559.00 ft
#2 Average depth of the main pool (feet)
3.50 ft
#6 Elevation of bottom of shelf (fmsl)
558.00 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
553.00 ft
#7 Diameter of drawdown orifice (inches)
2.50 in
#2 Elevation of the top of the permanent pool (fmsl)
558.50 ft
#7 Drawdown time for the temporary pool (hours)
48 hrs
#2 Elevation of the top of the temporary pool (fmsl)
559.05 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
No
#3 Depth provided for sediment storage (inches)
12 in
#8 Does the pond minimize impacts to the receiving channel from the 1-yr, 24-hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path:
#9 If yes, is documentation provided per Wet Pond MDC (9)?
Forebay Berm Provided
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
5030
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Bermuda
#5 Depth of forebay at entrance (inches)
54 in
#11 Describe the planting plan for the vegetated shelf:
#5 Depth of forebay at exit (inches)
54 in
See planting details in construction documents prepared by W.K. Dickson and Company.
#5 Does water flow out of the forebay in a non -erosive manner?
Yes
#5 Clean -out depth for forebay (inches)
12 in
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
I Yes
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
Wet Pond 3 4:34 PM 11/12/2019

WET POND
Millbridge Phase 7E
THE DRAINAGE AREA S
Drainage area number
3
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
00 sf
Parking / driveway (sq ft)
Total surface water area (sq ft)
00 sf
Sidewalk (sq ft)
Total drainage area (sq ft)
300642 sf
Roof (sq ft)
BUA associated with existing development (sq ft)
.00 sf
Roadway (sq ft)
Proposed new BUA (sq ft)
132885 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
14420 %
jTotal BUA (sq ft)
132885 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
IDesign rainfall depth (in)
1.0 in
Phase II Post -Construction Stormwater
IMinimurn volume required (cu ft)
11219 cf
Design volume of SCM (cu ft)
11219 cf
GENERAL MDC FROM 02H .1050
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
#7 If applicable, with the SCM be cleaned out after construction?
Yes
#2 Is the SCM located on or near contaminated soils?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H:V)?
3:1
#9 Does the drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)?
Yes
#11 Is there an O&M Agreement that complies with General MDC (11)?
Yes
#5 Is there a a bypass for flows in excess of the design flow?
Yes
#12 Is there an O&M Plan that complies with General MDC (12)?
Yes
#6 What is the method for dewatering the SCM for maintenance?
Pump (preferred)
1#13 Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 02H .1053
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 It
#1 Surface area of the main permanent pool (square feet)
7151 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
23357 cf
#6 Elevation of top of shelf (fmsl)
569.00 ft
#2 Average depth of the main pool (feet)
3.50 ft
#6 Elevation of bottom of shelf (fmsl)
568.00 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
564.00 ft
#7 Diameter of drawdown orifice (inches)
2.00 in
#2 Elevation of the top of the permanent pool (fmsl)
568.50 ft
#7 Drawdown time for the temporary pool (hours)
48 hrs
#2 Elevation of the top of the temporary pool (fmsl)
568.94 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
No
#3 Depth provided for sediment storage (inches)
12 in
#8 Does the pond minimize impacts to the receiving channel from the 1-yr, 24-hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path:
#9 If yes, is documentation provided per Wet Pond MDC (9)?
Forebay Berm Provided
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
4341
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Bermuda
#5 Depth of forebay at entrance (inches)
54 in
#11 Describe the planting plan for the vegetated shelf:
#5 Depth of forebay at exit (inches)
54 in
See planting details in construction documents prepared by W.K. Dickson and Company.
#5 Does water flow out of the forebay in a non -erosive manner?
Yes
#5 Clean -out depth for forebay (inches)
12 in
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
Yes
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
Wet Pond 4 4:34 PM 11/12/2019

Millbridge
Phase 7E Full
Design
oftw C
'ROJECT NO.:
20170279.00.CL
BY:
CJH
WVE A � KSC>M
DATE:
911112019
T.M.:
WGB
community Infrastructure Consultants
REVISED:
1111212019
P.M.:
WGB
PRELIMINARY CALCULATIONS
PREDEVELOPMENT BASIN #1 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.040 ft/ft
Computed 'T' 16.5 Minutes ji
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface: u
Length: 144 ft
u=unpaved Slope: 0.111 ft/ft
a=paved Velocitv: 5.38 ft/sec
11 Computed 'T': 0.007 hr, or J1 0.42 MinutesJ1
Pre -development I Type: Open Channel Flow
Flow Phase Three Length: ft
Velocity: 5 ft/sec (assumed)
Computed 'T'. 0.08 hr, or 4.8 Minutes
Pre -development
Total Flow
Summary
Time of Concentration
Total T c = 21.7 Minutes
Lag Time
T LAG = 13.0 Minutes
T LAG =0.6 x T
T LAG = 0.22 Hours

Millbridge
Phase 7E Full
Design
AWGB
oftwK
� D A � KSC7 N
'ROJECT NO.:
20170279.00.CL
BY:
DATE:
911112019
T.M.:
Community Infrastructure Consultants
REVISED:
1111212019
P.M.:
PRELIMINARY CALCULATIONS
PREDEVELOPMENT BASIN #2 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.02 ft/ft
Computed 'T' 21.8 Minutes ji
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface: u
Length: 153 ft
u=unpaved Slope: 0.036 ft/ft
p=paved Velocity: 3.06 ft/sec
Computed 'T'. 0.014 hr, or E 0.84 Minutes
Pre -development I Type: Open Channel Flow
Flow Phase Three Length: ft
Velocity: 1z ft/sec (assumed)
Computed 'T': 0.038 hr, or 2.3 Minutes
Pre -development
Total Flow
Summary
I Time of Concentration
Total T c = 24.9 Minutes
Lag Time
T LAG = 15.0 Minutes
T LAG =0.6 x T =ITLAG
= 0.25 Hours

Millbridge
Phase 7E
Full Design
oftwK c
� ��.7�
'ROJECT NO.:
20170279.00.CL
BY: CJH
DATE:
911112019
T.M.: WGB
community infrastructure Consultants
REVISED:
1111212019
P.M.: WGB
PRELIMINARY CALCULATIONS
PREDEVELOPMENT BASIN #3 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.025 ft/ft
Computed 'T' 19.9 Minutes
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface:
Length: 168 ft
u=unpaved Slope: 0.073 ft/ft
p=paved Velocity: 4.36 ftlsec
Computed 'T'. 0.011 hr, or 11 0.66 Minutes
Pre -development I Type: Open Channel Flow
Flow Phase Three Length: 51 ft
Velocity: 5 ft/sec (assumed)
Computed 'T': 0.003 hr, or 0.2 Minutes
Pre -development
Total Flow
Summary
Time of Concentration
Total T , = 20.7 Minutes
Lag Time
ITLAG = 12.4 Minutes
T LAG =0.6 x T JITLAG
= 0.21 Hours

Millbridge
Phase 7E
Full DesignAWGB
oftwK
'ROJECT NO.:
20170279.00.CL
BY:
c
WVE A � KSC>N
DATE:
911112019
T.M.:
community infrastructure Consultants
REVISED:
1111212019
P.M.:
PRELIMINARY CALCULATIONS
POST DEVELOPMENT BYPASS #1 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.08 ft/ft
Computed 'T' 12.5 Minutes
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface: u
Length: 117 ft
u=unpaved Slope: 0.064 ft/ft
p=paved Velocity: 4.09 ft/sec
Computed 'T'. 0.008 hr, or 11 0.48 Minutes
Pre -development I ype: Open Channel Flow
Flow Phase Three Length: ft
Velocity: ft/sec (assumed)
Computed 'T'. 0.065 hr, or 3.9 Minutes
Pre -development
Total Flow
Summary
Time of Concentration
Total T c = 16.9 Minutes
Lag Time
T LAG = 10.1 Minutes
T LAG =0.6 x T ]IT
LAG = 0.17 Hours

Millbridge
Phase 7E
Full DesignAWGB
oftwK
WVD A � KSC>M
'ROJECT NO.:
20170279.00.CL
BY:
DATE:
911112019
T.M.:
community infrastructure ConsultantsREVISED:
1111212019
P.M.:
PRELIMINARY CALCULATIONS
POST DEVELOPMENT BYPASS #2 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.015 ft/ft
Computed 'T' 24.4 Minutes
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface:
Length: 401 ft
u=unpaved Slope: 0.056 ftlft
p=paved Velocity: 3.82 ftlsec
Computed 'T': 0.029 hr, or 1.74 Minutes
Pre -development Type: Open Channel Flow
Flow Phase Three Length: 212 ft
Velocity: 5 ft/sec (assumed)
Computed 'T': 0.012 hr, or 0.7 Minutes
Pre -development
Total Flow
Summary
I Time of Concentration
Total T c = 26.9 Minutes
Lag Time
T LAG = 16.1 Minutes
T LAG =0.6 x T
T LAG = 0.27 Hours

Millbridge
Phase 7E
Full DesignAWGB
oftwK
WVD A � KSC>M
'ROJECT NO.:
20170279.00.CL
BY:
DATE:
911112019
T.M.:
community infrastructure ConsultantsREVISED:
1111212019
P.M.:
PRELIMINARY CALCULATIONS
POST DEVELOPMENT BYPASS #2 - TIME OF CONCENTRATION
PRE -DEVELOPMENT
Pre -development
Flow Phase One
Type: Sheet Flow
Length: 100 ft
"N" Value: 0.4 from tables
Slope: 0.02 ft/ft
Computed 'T' 21.8 Minutes
Pre -development Type: Shallow Concentrated Flow
Flow Phase Two Surface:
Length: 550 ft
u=unpaved Slope: 0.068 ftlft
p=paved Velocity: 4.21 ftlsec
Computed 'T': 0.036 hr, or 2.16 Minutes
Pre -development Type: Open Channel Flow
Flow Phase Three Length: 173 ft
Velocity: 5 ft/sec (assumed)
Computed 'T': 0.01 hr, or 0.6 Minutes
Pre -development
Total Flow
Summary
I Time of Concentration
Total T c = 24.6 Minutes
Lag Time
T LAG = 14.7 Minutes
T LAG =0.6 x T
T LAG = 0.25 Hours

Millbridge Phase 7E Full Desig WWK �+ p,
PROJECT NO.: 20170279.00.CL BY: CJH C) I � KS4C> P V
DATE: 9/11/2019 T.M.: WGB community Infrastructure consultants
REVISED: 1111212019 P.M.: WGB RIPRAP APRON DESIGN (NCDENR METHOD)
20
10
0
Outlet w - D4 + La
Vve IdiamA�W (Eb)
r•�❑.3Qp
P `
� Bo
3 s in 21) 50 too 2W
piwharxV ( l)evl
CL
Design of outlet protection from a round pipe flowing full, minimum tailwater condition Tw<0.5 diameter
ES #
Do (Pipe o)
T.
TW<0.5o
Q
V
dso
La
Apron width
Apron width
Max Stone
Apron
IFES
(ft)
(ft)
(cfs)
(ftls)
(ft)
(ft)
at pipe (ft)
at outlet (ft)
0 (ft)
Thickness(ft)
- BMP #1
OKAY
7.32
0.25
9
23
0.38
0.56
ES - BMP #2
OKAY
0.25
zu
9
23
0.38
0.56

Millbridge2Phase7E Full Desig
�KWK
ID I c—, ICS <--> Imo!
r:ommunity infrortructurc consultonir
PROJECT oc
e
DATE: 09/11/19
T.M.: WGB
REVISED: 11112119
P.M.: WGB
RIPRAP APRON DESIGN (NCDENR METHOD)
3Go
Pipe
dig.rrEater {C�p} �$
a
It
59...�;�
. m 0
zo
120
11-D _J
50 100
Discharge (tolsec)
Design of outlet protection from a round pipe flowing full, maximum tailwater condition Tw>_0.5 diameter
FES #
Do(Pipe o)
TW
T,,,,z0.50
Q
V
d50
La
Apron width
Apron width
Max Stone
Apron
(ft)
(ft)
(cfs)
(ftls)
(ft)
(ft)
at pipe (ft)
at outlet (ft)
0 (ft)
Thickness(ft)
FES - 100
OKAY
40.56
5.74
0.25
9
9
0.38
0.56
FES - 200
OKAY
26.40
3.73
0.25
9
9
0.38
0.56
FES - 300
OKAY
12.67
4.03
0.25
6
5
0.38
0.56

Millbridge Phase 7E Full Design �W[<
PROJECT NO.: 20170279.00.CL BY: CJH IDIC ICSQ"
DATE: 911112019 T.M.: WGB - „n reify nfvr r.1,,-1kjra cn iff r }s
REVISED: 1111212019 P.M.: WGB SPREAD CALCULATIONS NON -SUMP CONDITION
RAINFALL INTENSITY = 4.00 IN/HR 10 - YEAR 11
DRAINAGE
RUNOFF
SURFACE "Q"
1 SLOPE
I
I INLET
BYPASS
AREA
COEFF.
SUB.
I TOTAL
I LONG.
TRANS.
I
I "Q" CAP.
SPREAD
DEPTH
Qb
TO
SUMP
INLET #
A (acres)
C
IQS (cfs)
QT (Cfs)l
SL (f 0
ST ( IR)
I K
QCAP (cfs)
T (ft)
D (ft)
(cfs)
INLET#
(')
SAMPLE CALCULATION
CI #1 1.00 1 4.00 4.00 1 0.0400 0.03125 128.5 2.30 7.1 0.22 1.70 CI #2
PROJECT CALCULATIONS
CB-102
0.12
0.60
0.29
0.29
0.1000
0.03125
32
0.37
2.2
0.07
0.00
CB-103
CB-104
0.36
0.60
0.86
0.86
0.1000
0.03125
32.0
0.75
3.4
0.10
0.12
CB-103
CB-105
0.29
0.60
0.70
0.70
0.1000
0.03125
32.0
0.65
3.1
0.10
0.05
CB-112
CB-106
0.05
0.60
0.12
0.12
0.1000
0.03125
32.0
0.22
1.6
0.05
0.00
CB-105
CB-107
0.13
0.60
0.31
0.31
0.1000
0.03125
32.0
0.39
2.3
0.07
0.00
CB-106
CB-108
0.23
0.60
0.55
0.55
0.1000
0.03125
32.0
0.56
2.8
0.09
0.00
CB-107
CB-109
0.07
0.60
0.17
1 0.17
0.1000
1 0.03125
32.01
0.27
1.8
0.06
0.00
CB-104
CB-110
0.04
0.60
0.10
0.10
0.1000
0.03125
32.0
0.19
1.5
0.05
0.00
CB-109
CB-111
0.15
0.60
0.36
0.36
0.1000
0.03125
32.0
0.43
2.4
0.08
0.00
CB-110
CB-202
0.17
0.60
0.41
0.41
0.0334
0.03125
26.0
0.53
3.1
0.10
0.00
CB-203
CB-203
0.11
0.60
0.26
0.26
0.0159
0.03125
18.0
0.35
3.0
0.09
0.00
CB-204
CB-206
0.14
0.60
0.34
0.34
0.0342
0.03125
26.0
0.47
2.9
0.09
0.00
CB-205
CB-207
0.14
0.60
0.34
0.34
0.0342
0.03125
26.0
0.47
2.9
0.09
0.00
CB-205
CB-208
0.13
0.60
0.31
0.31
0.0203
0.03125
23.5
0.48
3.1
0.10
0.00
CB-205
CB-209
0.17
0.60
0.41
0.41
0.0191
0.03125
18.0
0.44
3.5
0.11
0.00
CB-208
CB-210
0.06
0.60
0.14
0.14
0.0134
0.03125
18.0
0.26
2.5
0.08
0.00
CB-209
CB-211
0.08
0.60
0.19
0.28
0.0363
0.03125
26.0
0.41
2.7
0.08
0.00
CB-210
CB-212
0.40
0.60
0.96
0.96
0.0390
0.03125
26.0
0.87
4.2
0.13
0.09
CB-211
CB-215
0.20
0.60
0.48
0.48
0.0334
0.03125
26.0
0.59
3.3
0.10
0.00
CB-205
CB-218
0.25
0.60
0.60
0.60
0.0350
0.03125
26.0
0.67
3.6
0.11
0.00
CB-206
CB-219
0.27
0.60
0.65
0.65
0.0350
0.03125
26.0
0.70
3.7
0.11
0.00
CB-207
CB-220
0.13
0.60
0.31
0.31
0.0191
0.03125
18.0
0.37
3.1
0.10
0.00
CB-204
CB-224
0.05
0.60
0.12
0.18
0.0363
0.03125
26.0
0.31
2.3
0.07
0.00
BYPASS
CB-225
0.37
0.60
0.89
0.89
0.0390
0.03125
26.0
0.83
4.0
0.13
0.06
CB-224
CB-302
0.10
0.60
0.24
0.24
0.0420
0.03125
28.5
0.39
2.4
0.08
0.00
CB-319
CB-303
0.23
0.60
0.55
0.55
0.0423
0.03125
28.5
0.66
3.3
0.10
0.00
CB-302
CB-304
0.21
0.60
0.50
0.50
0.0220
0.03125
23.5
0.63
3.6
0.11
0.00
CB-303
CB-305
0.12
0.60
0.29
0.29
0.0364
0.03125
26.0
0.42
2.7
0.08
0.00
CB-304
CB-306
0.24
0.60
0.58
0.58
0.0458
0.03125
28.5
0.66
3.3
0.10
0.00
CB-305
CB-307
0.13
0.60
0.31
0.31
0.0458
0.03125
28.5
0.45
2.6
0.08
0.00
CB-308
CB-308
0.10
0.60
0.24
0.24
0.0397
0.03125
26.0
0.36
2.5
0.08
0.00
BYPASS
CB-309
0.02
0.60
0.05
0.05
0.0397
0.03125
26.0
0.13
1.3
0.04
0.00
BYPASS
CB-317
0.05
0.60
0.12
0.12
0.0420
0.03125
28.5
0.25
1.9
0.06
0.00
CB-318
CB-320
0.02
0.60
0.05
0.05
0.0116
0.03125
18.0
0.13
1.7
0.05
0.00
CB-319
CB-321
0.02
0.60
0.05
0.05
0.0118
0.03125
18.0
0.13
1.7
0.05
0.00
CB-324
CB-322
0.11
0.60
0.26
0.26
0.0118
0.03125
18.0
0.39
3.2
0.10
0.00
CB-323
CB-323
0.10
0.60
0.24
0.24
0.0131
0.03125
18.0
0.36
3.0
0.09
0.00
BYPASS
CB-324
0.07
0.60
0.17
0.17
0.0131
0.03125
18.0
0.28
2.7
0.08
0.00
BYPASS
CB-326
0.15
0.60
0.36
0.36
0.0423
0.03125
28.5
0.50
2.8
0.09
0.00
CB-317
CB-329
0.27
0.60
0.65
0.65
0.0220
0.03125
23.5
0.73
4.0
0.12
0.00
CB-330
CB-330
0.05
0.60
0.12
0.12
0.0359
1 0.03125
126.01
0.24
1 1.9
1 0.06
0.00
BYPASS

Millbridge Phase 7E Full Design �k JVK
PROJECT NO.: 20170279.00.CL BY: CJH aw II51<--- 1<s
DATE: 9/11/2019 T.M.: WGB community infrostructura consultvnls
REVISED: 1111212019 P.M.: WGB SPREAD CALCULATIONS SUMP CONDITION
BMP #1
BMP #2
BMP #3
RAINFALL INTENSITY = 4.00 IN/HR 10 - YEAR
DRAINAG4
RUNOFF
SURFACE "Q"
I SLOPE
SINGLEINLET
DOUBLEINLET
INDICATE
AREA
COEFF.
SUB.
BYPASS
TOTAL
TRANS.
SPREAD
DEPTH
SPREAD
DEPTH
"SINGLE" OR
INLET #
A (acres)
C
Q S (cfs)
Q e (cfs)
Q r (cfs)
S r MIRE)
T (ff)
D (fr)
T (ff)
D (ff)
"DOUBLE"
SAMPLE CALCULATION
C1#1 1.00 0.6 2.40 0.00 2.40 1 0.03125 7.1 0.22 5.6 0.18 DOUBLE
PROJECT CALCULATIONS
CB-103
0.19
0.6
0.46
0.00
0.46
0.03125
2.4
0.07
1.9
0.06
SINGLE
CB-112
0.76
0.6
1.82
0.00
1.82
0.03125
5.9
0.19
4.7
0.15
DOUBLE
CB-204
0.29
0.6
0.70
0.00
0.70
0.03125
3.1
0.10
2.5
0.08
SINGLE
CB-205
0.40
0.6
0.96
0.00
0.96
0.03125
3.9
0.12
3.0
0.10
SINGLE
CB-318
0.6
0.94
0.00
0.94
0.03125
3.8
0.12
3.0
0.09
SINGLE
CB-319
0.6
0.50
0.00
0.50
1.03125
0.1
0.08
0.1
0.06
SINGLE

Millbridge Phase 7E Full Design �W[<
PROJECT NO.: 20170279.00.CL BY: CJH IDIC ICSQ"
DATE: 911112019 T.M.: WGB - „n reify nfvr r.1,,-1kjra cn iff r }s
REVISED: 1111212019 P.M.: WGB SPREAD CALCULATIONS NON -SUMP CONDITION
RA INFALL INTENSITY= 8.21 IN/HR 25-YEAR 11
DRAINAGE
RUNOFF
SURFACE "Q"
1 SLOPE
I
I INLET
BYPASS
AREA
COEFF.
SUB.
I TOTAL
I LONG.
TRANS.
I
I "Q" CAP.
SPREAD
DEPTH
Qb
TO
SUMP
INLET #
A (acres)
C
IQS (cfs)
QT (Cfs)l
SL (f 0
ST ( IR)
I K
QCAP (cfs)
T (ft)
D (ft)
(cfs)
INLET#
(')
SAMPLE CALCULATION
CI #1 1.00 1 8.21 4.00 1 0.0400 0.03125 128.5 2.30 7.1 0.22 1.70 CI #2
PROJECT CALCULATIONS
CB-102
0.12
0.60
0.59
0.59
0.1000
0.03125
32
0.59
2.9
0.09
0.00
CB-103
CB-104
0.36
0.60
1.77
1.77
0.1000
0.03125
32.0
1.17
4.4
0.14
0.61
CB-103
CB-105
0.29
0.60
1.43
1.43
0.1000
0.03125
32.0
1.02
4.0
0.13
0.41
CB-112
CB-106
0.05
0.60
0.25
0.38
0.1000
0.03125
32.0
0.44
2.5
0.08
0.00
CB-105
CB-107
0.13
0.60
0.64
0.89
0.1000
0.03125
32.0
0.76
3.4
0.11
0.13
CB-106
CB-108
0.23
0.60
1.13
1.13
0.1000
0.03125
32.0
0.88
3.7
0.12
0.25
CB-107
CB-109
0.07
0.60
0.34
1 0.34
0.1000
1 0.03125
32.01
0.42
2.4
0.07
0.00
CB-104
CB-110
0.04
0.60
0.20
0.26
0.1000
0.03125
32.0
0.35
2.1
0.07
0.00
CB-109
CB-111
0.15
0.60
0.74
0.74
0.1000
0.03125
32.0
0.68
3.2
0.10
0.06
CB-110
CB-202
0.17
0.60
0.84
0.84
0.0334
0.03125
26.0
0.84
4.1
0.13
0.00
CB-203
CB-203
0.11
0.60
0.54
0.54
0.0159
0.03125
18.0
0.56
4.0
0.12
0.00
CB-204
CB-206
0.14
0.60
0.69
0.87
0.0342
0.03125
26.0
0.85
4.1
0.13
0.02
CB-205
CB-207
0.14
0.60
0.69
0.92
0.0342
0.03125
26.0
0.88
4.2
0.13
0.04
CB-205
CB-208
0.13
0.60
0.64
0.79
0.0203
0.03125
23.5
0.85
4.4
0.14
0.00
CB-205
CB-209
0.17
0.60
0.84
0.84
0.0191
0.03125
18.0
0.69
4.5
0.14
0.15
CB-208
CB-210
0.06
0.60
0.30
0.39
0.0134
0.03125
18.0
0.48
3.6
0.11
0.00
CB-209
CB-211
0.08
0.60
0.39
1.00
0.0363
0.03125
26.0
0.91
4.3
0.13
0.09
CB-210
CB-212
0.40
0.60
1.97
1.97
0.0390
0.03125
26.0
1.36
5.4
0.17
0.61
CB-211
CB-215
0.20
0.60
0.99
0.99
0.0334
0.03125
26.0
0.93
4.3
0.14
0.06
CB-205
CB-218
0.25
0.60
1.23
1.23
0.0350
0.03125
26.0
1.05
4.7
0.15
0.18
CB-206
CB-219
0.27
0.60
1.33
1.33
0.0350
0.03125
26.0
1.10
4.8
0.15
0.23
CB-207
CB-220
0.13
0.60
0.64
0.64
0.0191
0.03125
18.0
0.58
4.1
0.13
0.06
CB-204
CB-224
0.05
0.60
0.25
0.77
0.0363
0.03125
26.0
0.78
3.9
0.12
0.00
BYPASS
CB-225
0.37
0.60
1.82
1.82
0.0390
0.03125
26.0
1.30
5.3
0.17
0.53
CB-224
CB-302
0.10
0.60
0.49
0.62
0.0420
0.03125
28.5
0.71
3.5
0.11
0.00
CB-319
CB-303
0.23
0.60
1.13
1.18
0.0423
0.03125
28.5
1.06
4.4
0.14
0.13
CB-302
CB-304
0.21
0.60
1.03
1.03
0.0220
0.03125
23.5
0.98
4.8
0.15
0.05
CB-303
CB-305
0.12
0.60
0.59
0.74
0.0364
0.03125
26.0
0.76
3.8
0.12
0.00
CB-304
CB-306
0.24
0.60
1.18
1.18
0.0458
0.03125
28.5
1.03
4.4
0.14
0.15
CB-305
CB-307
0.13
0.60
0.64
0.64
0.0458
0.03125
28.5
0.70
3.5
0.11
0.00
CB-308
CB-308
0.10
0.60
0.49
0.49
0.0397
0.03125
26.0
0.57
3.2
0.10
0.00
BYPASS
CB-309
0.02
0.60
0.10
0.10
0.0397
0.03125
26.0
0.21
1.8
0.06
0.00
BYPASS
CB-317
0.05
0.60
0.25
0.25
0.0420
0.03125
28.5
0.40
2.5
0.08
0.00
CB-318
CB-320
0.02
0.60
0.10
0.10
0.0116
0.03125
18.0
0.21
2.2
0.07
0.00
CB-319
CB-321
0.02
0.60
0.10
0.10
0.0118
0.03125
18.0
0.21
2.2
0.07
0.00
CB-324
CB-322
0.11
0.60
0.54
0.54
0.0118
0.03125
18.0
0.61
4.2
0.13
0.00
CB-323
CB-323
0.10
0.60
0.49
0.49
0.0131
0.03125
18.0
0.56
4.0
0.12
0.00
BYPASS
CB-324
0.07
0.60
0.34
0.34
0.0131
0.03125
18.0
0.45
3.5
0.11
0.00
BYPASS
CB-326
0.15
0.60
0.74
0.74
0.0423
0.03125
28.5
0.79
3.7
0.12
0.00
CB-317
CB-329
0.27
0.60
1.33
1.33
0.0220
0.03125
23.5
1.15
5.2
0.16
0.18
CB-330
CB-330
0.05
0.60
0.25
0.43
0.0359
1 0.03125
126.01
0.54
1 3.1
1 0.10
0.00
BYPASS

Millbridge Phase 7E Full Design �k JVK
PROJECT NO.: 20170279.00.CL BY: CJH aw II51<--- 1<s
DATE: 9/11/2019 T.M.: WGB community infrostructura consultvnls
REVISED: 1111212019 P.M.: WGB SPREAD CALCULATIONS SUMP CONDITION
BMP #1
BMP #2
BMP #3
RAINFALL INTENSITY= 8.21 IN/HR 25- YEAR
DRAINAG4
RUNOFF
SURFACE "Q"
I SLOPE
SINGLEINLET
DOUBLEINLET
INDICATE
AREA
COEFF.
SUB.
BYPASS
TOTAL
TRANS.
SPREAD
DEPTH
SPREAD
DEPTH
"SINGLE" OR
INLET #
A (acres)
C
Q S (cfs)
Q e (cfs)
Q r (cfs)
S r MIRE)
T (ff)
D (fr)
T (ff)
D (ff)
"DOUBLE"
SAMPLE CALCULATION
C1#1 1.00 0.6 4.93 0.00 4.93 1 0.03125 11.5 0.36 9.1 0.28 DOUBLE
PROJECT CALCULATIONS
CB-103
0.19
0.6
0.94
0.00
0.94
0.03125
3.8
0.12
3.0
0.09
SINGLE
CB-112
0.76
0.6
3.74
0.00
3.74
0.03125
9.6
0.30
7.5
0.24
DOUBLE
CB-204
0.29
0.6
1.43
0.06
1.49
0.03125
5.2
0.16
4.1
0.13
SINGLE
CB-205
0.40
0.6
1.97
0.12
2.09
0.03125
6.5
0.20
5.1
0.16
SINGLE
CB-318
0.6
1.92
0.00
1.92
0.03125
6.1
0.19
4.8
0.15
SINGLE
CB-319
0.6
1.03
1 0.00
1 1.03
1 1.031251
0.1
1 0.13
1 0.1
1 0.10
1 SINGLE

Millbridge Phase 7E �V%]<
PROJECT NO 20170279.00.CL BY: CJH aW Q A C� KSC>"
DATE: 9/6/2019 T.M.: WGB CvmmL—ItV 1nff0stFkJC1LJF0 cv nsii rfonrs
REVISED: 1111212019 P.M.: WGB SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #1 PH
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 9.72 ac
Proposed sediment depth ft
Disturbed area DA 9.72 ac
Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 17496 cf
I Dep th of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
567 msl
Sediment Storage elevation
570 msl
Primary Spillway crest
572 msl
Top of Berm
573 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 102 48
Top 120 66
BASIN EFFICIENCY
Sediment storage provided: 75399 OKAY
Sediment storage required: 17496 cf
Surface area/Flow comparison: 28450 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
567
21891
0
568
24021
22956
569
26207
48070
570
28450
75399
571
30749
104998
572
33104
166552
573
35517
232818
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' =
Riser pipe diameter 54 in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 2 ft
Flow through riser: 136 cfs OKAY
Com osite 'C'=
Area 'A' = 9.72 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 41 cfs
SPILLWAY DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5)); C= 3.0 h= 1.00
Spillway length @ flow depth 14
OUTLET PIPE DESIGN
Outlet pipe diameter
36 in
Flow through outlet pipe 71 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
194.46 ft
Outlet pipe invert in
561.90
Outlet pipe invert out
560.93
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON: amlllL-
Formula:
A=435*Q
1
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q desi n :
41 CFS
A Re uired :
17835 sf of surface area at sed stor elev
Q:
Peak inflow rate of 10 year storm in cfs
A Provided
28450 OKAY
Cubic Feet per day
irmula: Qd=V/td = (ft^3/day)
,DENR optimal dewatering time is 3 days
= desired detwatering time in days = 3 days
Qd: 5832 ft^3/day
Orifice Diameter
elect Skimmer Size: in.
:ad on Orifice (Use Chart): ft.
rrmula:
Ir=V p,n23iQ• Hl
D: 2.25 in.
:tual Orifice Diameter: 2.5 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft-)
1.5
0.125
2
0.167
2.5
0.208
3
0.25
4
0.333
5
0.333
b
0.417
S
10.5

Millbridge Phase 7E �v%]<
PROJECT NO 20170279.00.CL BY: CJH aW Q A C� KSC>"
DATE: 9/6/2019 T.M.: WGB co—L—Ify �nfrr,sr ucfurc cvn- rirnnts
REVISED: 1111212019 P.M.: WGB SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #1 PH2
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 12.98 ac
Proposed sediment depth ft
Disturbed area DA 12.98 ac
Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 23364 cf
I Depth of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
567 msl
Sediment Storage elevation
570 msl
Primary Spillway crest
572 msl
Top of Berm
573 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 119 57
Top 137 75
BASIN EFFICIENCY
Sediment storage provided: 75399 OKAY
Sediment storage required: 23364 cf
Surface area/Flow comparison: 28450 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
567
d!)7
0
568
24021
22956
569
26207
48070
570
28450
75399
571
30749
104998
572
33104
166552
573
35517
232818
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' =
Riser pipe diameter 54 in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 2 ft
Flow through riser: 136 cfs OKAY
Com osite 'C'=
Area 'A' = 12.98 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 55 cfs
SPILLWAY DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5)); C= 3.0 h= 1.00
Spillway length @ flow depth 19
OUTLET PIPE DESIGN
Outlet pipe diameter
36 in
Flow through outlet pipe 71 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
194.46 ft
Outlet pipe invert in
561.90
Outlet pipe invert out
560.93
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON:
Formula:
A=435-Q
1
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q(design) :
55 CFS
A Re uired :
23925 sf of surface area at sed stor elev
Q:
Peak inflow rate of 10 year storm in cfs
A Provided
28450 OKAY
Cubic Feet per da
Formula: Qd=V/td = (ft^3/day)
NCDENR optimal dewatering time is 3 days
td = desired detwatering time in days = 3 days
Qd: 7788 ft^3/dav
Select Skimmer Size: 3 in.
Head on Orifice (Use Chart):
5 ft.
Formula: f
F7= V Q.n23iQ• H,
D:
2.60 in.
Actual Orifice Diameter:
2.5 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft.)
1.5
0.125
2
0.167
2.5
3
0.208
0.25
4
0.333
5
0.333
b
0.417
8
0.5

Millbridge Phase 7E �V%]<
PROJECT NO 20170279.00.CL BY: CJH � Q I C� i<S<-->
DATE: 9/6/2019 T.M.: WGB I co—L—Ify �nfrnsrrucfuro con- rirnnts
REVISED: 1111212019 P.M.: WGB I SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #2 PHI
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 14.94 ac
Proposed sediment depth ft
Disturbed area DA 14.94 ac
Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 26892 cf
I Dep th of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
559 msl
Sediment Storage elevation
562 msl
Primary Spillway crest
563.5 msl
Top of Berm
565 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 128 61
Top 146 79
BASIN EFFICIENCY
Sediment storage provided: 76761 OKAY
Sediment storage required: 26892 cf
Surface area/Flow comparison: 28946 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
559
22303
0
560
24461
23382
561
26675
48950
562
28946
76761
563
31273
106870
564
33657
169473
565
36097
236843
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' =
0.60
Riser pipe diameter in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 1.5 ft
Flow through riser: 87 cfs OKAY
Com osite 'C'= ).60
Area 'A' = 14.94 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 63 cfs
SPILLWAY
DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5));
C= 3.0 h= 1.00
Spillway lengthlength@ flow depth 21
OUTLET PIPE
DESIGN
Outlet pipe diameter
36 in
Flow through outlet pipe 88 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
86.38 ft
Outlet pipe invert in
553.90
Outlet pipe invert out
553.47
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON:
Formula:
A=435-Q
I I
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q(design):l
63 CFS
A Re uired :
27405 sf of surface area at sed stor elev
Q:
Peak inflow rate of 10 year storm in cfs
A Provided
28946 OKAY
Cubic Feet per day
irmula: Qd=V/td = (ft^3/day)
,DENR optimal dewatering time is 3 days
= desired detwatering time in days = 3 days
Qd: 8964 ft^3/day
Orifice Diameter
elect Skimmer Size: 3 in.
:ad on Orifice (Use Chart): 5 ft.
irmula:
D= Q,na� alo•1rlt
D: 2.79 in.
:tual Orifice Diameter: 2.5 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft.)
1.5
0.125
2
0.167
2.5
3
0.208
0.25
4
0.333
5
0.333
6
0.417
8
0.5

Millbridge Phase 7E �V%]<
PROJECT NO 20170279.00.CL BY: CJH aW Q A C� KSC>"
DATE: 09/06/19 T.M.: WGB CvmmL—ItV 1nff0stFkJC1LJF0 cv nsii rfonrs
REVISED: 1111212019 P.M.: WGB SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #2 PH2
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 9.67 ac
Proposed sediment depth ft
Disturbed area DA 9.67 ac
Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 17406 cf
I Dep th of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
559 msl
Sediment Storage elevation
562 msl
Primary Spillway crest
563.5 msl
Top of Berm
565 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 102 48
Top 120 66
BASIN EFFICIENCY
Sediment storage provided: 64928 OKAY
Sediment storage required: 17406 cf
Surface area/Flow comparison: 24883 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
559
7tf4—
0
560
20555
19524
561
22685
41144
562
24883
64928
563
27141
90940
564
29455
145278
565
31826
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' =
Riser pipe diameter 54 in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 1.5 ft
Flow through riser: 87 cfs OKAY
Com osite 'C'=
Area 'A' = 9.67 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 41 cfs
SPILLWAY DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5)); C= 3.0 h= 1.00
Spillway length @ flow depth 14
OUTLET PIPE DESIGN
Outlet pipe diameter
36 in
Flow through outlet pipe 88 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
86.38 ft
Outlet pipe invert in
553.90
Outlet pipe invert out
553.47
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON: amlllL—
Formula:
A=435*Q
1
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q desi n :
41 CFS
A Re uired :
17835 sf of surface area at sed stor elev
Q:
Peak inflow rate of 10 year storm in cfs
A Provided
24883 OKAY
Cubic Feet per day
irmula: Qd=V/td = (ft^3/day)
,DENR optimal dewatering time is 3 days
= desired detwatering time in days = 3 days
Qd: 5802 ft^3/day
Orifice Diameter
elect Skimmer Size: in.
:ad on Orifice (Use Chart): ft.
rrmula:
Ir=V p,n23iQ• Hl
D: 2.24 in.
:tual Orifice Diameter: 2.5 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft-)
1.5
0.125
2
0.167
2.5
0.208
3
0.25
4
0.333
5
0.333
b
0.417
S
10.5

Millbridge Phase 7E �V%]<
PROJECT N020170279.00.CL BY: CJH WW Q I C� i<S<-->
DATE: 9/6/2019 T.M.: WGB co—L—Ify �ntrnsrnicfuro con- rirnnts
REVISED: 1111212019 P.M.: WGB SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #3 PHI
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 4.49 ac
Proposed sediment depth ft
Disturbed area DA 4.49 ac
I Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 8082 cf
I Depth of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
569 msl
Sediment Storage elevation
572 msl
Primary Spillway crest
573.5 msl
Top of Berm
575 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 68 31
Top 86 49
BASIN EFFICIENCY
Sediment storage provided: 37020 OKAY
Sediment storage required: 8082 cf
Surface area/Flow comparison: 14424 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
569
10331
0
570
11639
10985
571
13003
23306
572
14424
37020
573
15901
52182
574
17435
84041
575
19025
118967
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' = 0.60
Riser pipe diameter in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 1.5 ft
Flow through riser: 87 cfs OKAY
Com osite 'C'=
Area 'A' = 4.49 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 19 cfs
SPILLWAY DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5)); C= 3.0 h= 1.00
Spillway lengthlength@ flow depth 10
OUTLET PIPE
DESIGN
Outlet pipe diameter
24 in
Flow through outlet pipe 36 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
61.23 ft
Outlet pi e invert in
565.31
Outlet pipe invert out
565.00
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON:
Formula:
A=435'Q
1
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q desi n :
19 CFS
A Re uired :
8265 sf of surface area at sed stor elev
Q: 91M
Peak inflow rate of 10 year storm in cfs
A Provided
14424 OKAY
Cubic Feet per da
Formula: Qd=V/td = (ft^3/day)
NCDENR optimal dewatering time is 3 days
td = desired detwatering time in days = 3 days
Qd: 2694 ft^3/day
Orifice Diameter
Select Skimmer Size: 3 in.
Head on Orifice (Use Chart): 5 ft.
Formula:
= Q.n -)
D: 1.53 in.
Actual Orifice Diameter: 2 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft.)
1.5
0.125
2
0.167
2.5
3
0.208
0.25
4
0.333
5
0.333
6
0.417
8
0.5

Millbridge Phase 7E �v%]<
PROJECT NO 20170279.00.CL BY: CJH aW Q A C� KSC>"
DATE: 09/06/19 T.M.: WGB co—L—Ify �ntrnsr ucfuro con- rirnnts
REVISED: 1111212019 P.M.: WGB SEDIMENT BASIN CALCULATIONS
SEDIMENT BASIN #3 PH2
DRAINAGE AREAS/REQ'D STORAGE
DESIGN CRITERIA
Total drainage area TDA 6.90 ac
Proposed sediment depth ft
Disturbed area DA 6.90 ac
Bottom elevation of basin ms/
Re uired sediment stora a 1800xTDA 12420 cf
I Depth of flow over Riser ft
BASIN CONFIGURATION
Bottom elevation
569 msl
Sediment Storage elevation
572 msl
Primary Spillway crest
573.5 msl
Top of Berm
575 msl
ESTIMATED BASIN SIZE RECTANGULAR
Length(ft) Width(ft)
Bottom 85 40
Top 103 58
BASIN EFFICIENCY
Sediment storage provided: 37020 OKAY
Sediment storage required: 12420 cf
Surface area/Flow comparison: 14424 OKAY
PLANNED BASIN SIZE
REFER TO EROSION CONTROL PLAN
Elev. Area SF Cumulative Volume CF
569
1 u3., .
0
570
11639
10985
571
13003
23306
572
14424
37020
573
15901
52182
574
17435
84041
575
19025
118967
DESIGN FLOW Q=CIA
RISER DESIGN
Bare soil coefficient 'C' =
Riser pipe diameter 54 in
4'x4' Box equivalent to 54" diameter riser
Depth of flow 1.5 ft
Flow through riser: 87 cfs OKAY
Com osite 'C'=
Area 'A' = 6.90 ac
10 yr. storm rainfall intensity,'I' = 7.03 in/hr
Computed flow from site, 'Q' = 29 cfs
SPILLWAY DESIGN
Spillway design: (L =Q/(C *h ^ 1. 5)); C= 3.0 h= 1.00
Spillway length @ flow depth 10
OUTLET PIPE DESIGN
Outlet pipe diameter
24 in
Flow through outlet pipe 36 cfs
(Note: Flow determined using outlet control and pipe 80 % full)
OUTLET PIPE IS OKAY
Pipe slope ft/ft
0.005 ft/ft
Pipe length(ft)
61.23 ft
Outlet pipe invert in
565.31
Outlet pipe invert out
565.00
CONCRETE ANCHOR SIZE
SEE PERMENANT POND CONCRETE ANCHOR SIZE
SURFACE AREA/FLOW COMPARISON:
Formula:
A=435*Q
1
7.03 10 year storm
A:
Minimum Surface Area (acres) measured
at the crest of the principal spillway
Q desi n :
29 CFS
A Re uired :
12615 sf of surface area at sed stor elev
Q:
Peak inflow rate of 10 year storm in cfs
A Provided
14424 OKAY
Cubic Feet per day
rmula: Qd=V/td = (ft^3/day)
;DENR optimal dewatering time is 3 days
= desired detwatering time in days = 3 days
Qd: 4140 ft^3/dav
t Skimmer Size:
3 in.
on Orifice (Use Chart):
5 ft.
ula: f
F7= V Q.n23iQ• H,
D:
1.89 in.
it Orifice Diameter:
2 in.
OKAY
NCDENR Head on Orifice Chart
Skimmer Size (in.)
Head on Orifice (ft-)
1.5
0.125
2
0.167
2.5
0.208
3
0.25
4
0.333
5
0.333
b
0.417
S
10.5

�7 � � � � -7
�D ICI
S N
TRAPEZOIDAL CHANNEL COMPUTATION SHEET
PROJECT:
Millbridge Phase 7E
LOCATION:
Waxhaw, NC
Q;
aT+
LL w
LL Q
a+
N
fa
J
s
i
O
= t
=
i
0
-y O-
O-
«_
4 Q
U
U
•=
C
W
y K
C
LL
.S O
O
•C
`
O
C
J
O
O-
'6_ -�
•C
U
Gl
Gl -y
O
j
•f6
p
H
Fn
f06
•tn
s
U fn
U
Q
U
Of
I
m
2
LL
0
N
Ac
Co
Ri
L
d
b
e
n
C
Qd
S
T
TDD #1.1
7.10
0.60
7.03
308.0
2.00
6.00
18.00
3
0.025
430.31
29.95
0.49
8.23
0.065
1.98
31
Synthetic Mat
✓
TDD #1.2
0.64
0.60
7.03
116.0
2.00
4.00
12.00
2
0.065
67.75
2.70
0.35
1.63
0.026
0.57
77
Straw with Net
✓
TDD #2.1
12.72
0.60
7.03
502.0
2.25
3.00
12.00
2
0.025
118.98
53.65
1.54
5.73
0.010
0.96
225
Synthetic Mat
✓
TDD #2.2
0.21
0.60
7.03
137.0
2.00
2.00
10.00
2
0.065
35.73
0.89
0.31
1.08
0.015
0.29
133
Straw with Net
✓
TDD #3.1
2.17
0.60
7.03
242.0
2.00
2.00
10.00
2
0.033
90.85
9.15
0.66
4.15
0.025
1.04
80
Straw with Net
✓
*Manning's values area based on channel lining and design flow depth as shown in NC DENR Table 8.05e.
"Shear Stress is NA if design velocity is less than 2 fps and temporary seeding is used as a liner. Per NC DENR linings are not required if velocity is less than 2 fps.

TEMPORARY
Designir
Product Description
Longevity
Applications
Stress lbs/ft' (Pa)
ERONET
1.51b., accelerated photodegradable, polypropylene
45 days
Low Flow Channels
Unvegetated 1.55 (74)
Unvegetated 5.0 (1.52)
topnet,100% straw fiber matrix
4.1-3.1Slopes
OS75
ov
1.51b., photodegradable, polypropylene top G
Moderate Flow Channels
bottom net, 100% straw fiber matrix
60 days
3.1-2.1Slopes
Unvegetated 1.75 (84)
Unvegetated 6.0 (1.83)
OS150
1.51b.,photodegradable, polypropylene top net,
12months
Low Flow Channels
Unvegetated 1.55 (74)
Unvegetated 5.0 (152)
100% straw fiber matrix
4.1-3.1Slopes
S75
00
151b., photodegradable, polypropylene top G
12 months
Moderate Flow Channels
Unvegetated 1.75 (84)
Unvegetated 6.0 (1.83)
bottom net, 100% straw fiber matrix
3.1-2.1 Slopes
5150
Fk
2.91b., UV -stable polypropylene top net,
70%straw/30% coconut fiber matrix, 1.51 b.,
24months
Medium Flow Channels
Medium
Unvegetated 2. 0(96)
Unvegetated 8. 0(2.44)
pes
photodegradable polypropylene bottom net
SC150
kk
2.91b., UV stable polypropylene top G bottom nets,
36months
High Flow Channels
Unvegetated 2. 25(108)
Unvegetated 10. 0(3. 05)
100% coconut fiber matrix
1.1 and Greater Slopes
C125
BIONET
9.3lb., lenowoven biodegradable jute top net,
12months
Low Flow Channels
Unvegetated 1. 60(76)
Unvegetated 5. 0(1.52)
100% straw fiber matrix
4.1-3.1Slopes
S75BN
9.3lb., leno woven biodegradable jute top net, 100%
straw fiber matrix, 7.71 b., woven biodegradable jute
12months
Moderate Flow Channels
Unvegetated 1. 85(88)
Unvegetated 6. 0(1. 83)
bottom net
3.1-2.1Slopes
S150BN
9.3lb. Zeno woven biodegradable jute top net,70%
Medium Flow Channels
straw/30% coconut fiber matrix, 7.71 b., woven
18months
2.1-V.151opes
Unvegetated 2.10(100)
Unvegetated 8. 0(2.44)
biodegradablejutehottom net
SC150BN

TEMPORARY
imL
Design
Product Description
Longevity Applications
Stress lbs/ft' (Pa)
u
BIONET CONPU
9.3 P, , leno woven biodegradable jute top net, 100
High Flow Channels
coconut fiber matrix, 7.71 b., woven biodegradable
24mo. V.1 and Greater Slopes
Unvegetated 2. 35(112)
Unvegetated 10. 0(3. 05)
jute bottom net
C125BN
ow
1431b., (700 g) woven biodegradable colrtop
Hi
High Flow Channels
net, 100% coconut fiber matrix, 7.71 b., woven
blodegrdable jute bottom net
36mo.
and Greater Slopes
Unvegetated 2. 35(112)
Unvegetated 10. 0(3. 05)
C700BN
PERMANENT
ERONET
0-ok
5.0lb., UV -stable polypropylene top net, 100 %
polypropylene 3.016., UV -stable
High Flow Channels
Permanent
Unvegetated 3.0 (144)
Unvegetated 9.0 (2.7)
bottomfiber
net
polypropylene bottom net
I I Slopes
Vegetated 8.0 (383)
Vegetated 16.0 (4.9)
P300
VMAX
-`_
5.01b., UV -stable polypropylene top G bottom nets,
., UV -stable polypropylene corrugated center
High Flow Channels
Permanent
Unvegetated 3.0 (144)
Unvegetated 9.5 (29)
net, 70%straw/30 % coconut fiber matrix
net,
I I and Greater Slopes
Vegetated 10.0 (480)
Vegetated 15.0 (4.6)
SC250
8.0Ib., UV -stable polypropylene top G bottom nets,
24.01b., UV -stable polypropylene corrugated center
High Flow Channels
Permanent
Unvegetated 3.2 (153)
Unvegetated 10.5 (3.2)
net, 100 % coconut fiber matrix
I I and Greater Slopes
Vegetated 12.0 (576)
Vegetated 20.0 (6.0)
C350
24.0Ib.,UV-stable polypropylene top G bottom
nets, 24.01b., UV -stable polypropylene corrugated
Extreme High Flow Channels
Permanent
Unvegetated 4. 0(191)
Unvegetated 12.5(3. 8)
center net, 100 % polypropylene fiber matrix
I I and Greater Slopes
Vegetated 14.0 (672)
Vegetated 25.0 (7.6)
P550
100%UV-stable polypropylene monofllament
Permanent Extreme High Flow Channels
Vegetated 15. 0(718)
Vegetated 25. 0(7. 6)
yarns, woven Into a 3-0 structure
I I and Greater Slopes
TMax
100%UV-stable polypropylene monofllament
Permanent Extreme High Flow Channels
Vegetated 16. 0(766)
Vegetated 25. 0(7. 6)
yarns, woven Into a 3-0 structure
I I and Greater Slopes
W3000

Project Description
Friction Method
Solve For
Input Data
Worksheet for Circular Pipe - 1
Manning Formula
Full Flow Capacity
Roughness Coefficient
0.024
Channel Slope
0.02000
ft/ft
Normal Depth
1.50
ft
Diameter
1.50
ft
Discharge
8.05
ft3/s
Results
Discharge
8.05
ft3/s
Normal Depth
1.50
ft
Flow Area
1.77
w
Wetted Perimeter
4.71
ft
Hydraulic Radius
0.38
ft
Top Width
0.00
ft
Critical Depth
1.10
ft
Percent Full
100.0
%
Critical Slope
0.02543
ft/ft
Velocity
4.55
ft/s
Velocity Head
0.32
ft
Specific Energy
1.82
ft
Froude Number
0.00
Maximum Discharge
8.66
ft3/s
Discharge Full
8.05
ft3/s
Slope Full
0,02000
ft/ft
Flow Type
SubCritical
GVF Input Data
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GVF Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0.00 %
Bentley Systems, Inc, Haestad Methods Soh BizirtIG)yffilewMaster V8i (SELECTseries 1) [08.11.01.03]
9/17/2018 1:49:08 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2

Worksheet for Circular Pipe - I
GVF Output Data
Normal Depth Over Rise
100.00
%
Downstream Velocity
Infinity
fUs
Upstream Velocity
Infinity
ft/s
Normal Depth
1.50
ft
Critical Depth
1,10
ft
Channel Slope
0.02000
fUft
Critical Slope
0.02543
ft/ft
Bentley Systems, Inc. Haestad Methods Sol tHisitftEdetwMaster V81 (SELECTseries 1) [08.11.01.03]
9/1712018 1:49:08 PM 27 Slemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
Project File: MiUbhdgoPhase 7E'0NP#1.stn
Number of lines: 15 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
25.818
0.00
10.63
0.60
0.00
6.38
5.0
7.3
6.4
40.99
55.67
5.80
36
0.70
562.00
562.18
566.50
566.60
565.42
571.67
Pipe - (110)
2
1
145.500
0.12
10.63
0.60
0.07
6.38
5.0
6.9
6.5
41.66
100.5
1071
36
2.27
566.90
570.20
568.25
572.30
571.67
580.44
Pipe - (111)
3
2
77.377
0.19
10.51
0.60
0.11
6.31
5.0
6.6
6.6
41.55
82.60
8.08
36
1.53
570.30
571.49
572.30
573.59
580.44
579.48
Pipe - (112)
4
3
85767
0.36
6.93
0.60
0.22
4.16
5.0
6.3
6.7
27.72
42.01
7.86
30
1.05
571.99
572.89
573.59
574.68
579.48
580.39
Pipe - (114)
5
4
24.500
0.29
6.57
0.60
0.17
3.94
5.0
6.3
6.7
26.34
26.64
9.27
24
1.39
574.39
574.73
576.01
576.52
580.39
580.75
Pipe - (115)
6
5
96.164
0.05
6.28
0.60
0.03
3.77
5.0
6.1
6.7
25.37
44.49
8.59
24
3.87
574.73
578.45
576.52
580.22
580.75
584.45
Pipe - (116)
7
6
45M0
0.13
6.23
0.60
0.08
3.74
5.0
6.0
6.8
25.27
53.74
8.60
24
5.65
578.45
581.04
580.22
582.81
584.45
587.06
Pipe - (117)
8
7
144.129
0.23
6.10
0.60
0.14
3.66
5.0
5.7
6.8
25.04
55.57
8.53
24
6.04
581.04
589.74
582.81
591.50
587.06
596.81
Pipe - (118)
9
8
20.000
0.07
1.21
0.60
0.04
0.73
5.0
5.6
6.9
4.99
7.42
4.51
18
0.50
592.21
592.31
593.11
593.21
596.81
596.81
Pipe - (119)
10
9
61.746
0.04
1.14
0.60
0.02
0.68
5.0
5.2
7.0
4.77
27.09
3.75
18
6.66
592.31
596.42
593.68
597.26
596.81
600.93
Pipe - (120)
11
10
39.436
1.10
1.10
0.60
0.66
0.66
5.0
5.0
7.0
4.64
16.39
6.61
15
6.44
596.67
599.21
597.26
600.08
600.93
603.49
Pipe - (121)
12
8
51.751
4.66
4.66
0.60
2.80
2.80
5.0
5.0
7.0
19.66
15.99
6.26
24
0.50
590.24
590.50
592.24
592.63
596.81
595.50
Pipe - (168)
13
3
20.000
0.76
3.39
0.60
0.46
2.03
5.0
6.5
6.6
13.49
94.31
4.56
36
2.00
572.09
572.49
573.59
573.66
579.48
579.48
Pipe - (113)
14
13
33.327
0.00
2.63
0.60
0.00
1.58
5.0
6.1
6.7
10.61
148.1
4.55
36
4.93
572.49
574.13
573.66
575.16
579.48
582.04
Pipe - (155)
15
14
104.058
2.63
2.63
0.60
1.58
1.58
5.0
5.0
7.0
11�09
49.36
5.32
36
0.55
574.33
574.90
575.30
575.95
582.04
579.73
Pipe - (156)
Project File: Millbridge Phase 7E - BIVIP #1.stm
Number of lines: 15
Run Date: 11/12/2019
NOTES:Intensity = 84.35 / (Inlet time + 15.10) 1 0.83; Return period =Yrs. 10 c = cir e = ellip b = box
Storm Sewers v2018.30

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
Project File: MiUbhdgoPhase 7E'0NP#1.stn
Number of lines: 15 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
25.818
0.00
10.63
0.60
0.00
6.38
5.0
7.0
7.6
48.42
55.67
6.85
36
0.70
562.00
562.18
566.50
566.64
565.42
571.67
Pipe - (110)
2
1
145.500
0.12
10.63
0.60
0.07
6.38
5.0
6.6
7.7
49.11
100.5
1133
36
2.27
566.90
570.20
568.38
572.48
571.67
580.44
Pipe - (111)
3
2
77.377
0.19
10.51
0.60
0.11
6.31
5.0
6.4
7.8
48.92
82.60
8.70
36
1.53
570.30
571.49
572.48
573.77
580.44
579.48
Pipe - (112)
4
3
85767
0.36
6.93
0.60
0.22
4.16
5.0
6.1
7.8
32M
42.01
8.36
30
1.05
571.99
572.89
573.77
574.83
579.48
580.39
Pipe - (114)
5
4
24.500
0.29
6.57
0.60
0.17
3.94
5.0
6.1
7.9
30.96
26.64
9.85
24
1.39
574.39
574.73
576.39
576.85
580.39
580.75
Pipe - (115)
6
5
96.164
0.05
6.28
0.60
0.03
3.77
5.0
5.9
7.9
29.79
44.49
9.48
24
3.87
574.73
578.45
579.01
580.68
580.75
584.45
Pipe - (116)
7
6
45M0
0.13
6.23
0.60
0.08
3.74
5.0
5.8
7.9
29.65
53.74
9.60
24
5.65
578.45
581.04
581.49
582.90
584.45
587.06
Pipe - (117)
8
7
144.129
0.23
6.10
0.60
0.14
3.66
5.0
5.6
8.0
29.34
55.57
9.66
24
6.04
581.04
589.74
582.90
591.59
587.06
596.81
Pipe - (118)
9
8
20.000
0.07
1.21
0.60
0.04
0.73
5.0
5.5
8.0
5.84
7.42
4.65
18
0.50
592.21
592.31
593.21
593.31
596.81
596.81
Pipe - (119)
10
9
61.746
0.04
1.14
0.60
0.02
0.68
5.0
5.1
8.2
5.58
27.09
4.07
18
6.66
592.31
596.42
593.82
597.33
596.81
600.93
Pipe - (120)
11
10
39.436
1.10
1.10
0.60
0.66
0.66
5.0
5.0
8.2
5.42
16.39
6.85
15
6.44
596.67
599.21
597.33
600.15
600.93
603.49
Pipe - (121)
12
8
51.751
4.66
4.66
0.60
2.80
2.80
5.0
5.0
8.2
22.95
15.99
7.31
24
0.50
590.24
590.50
592.24
592.77
596.81
595.50
Pipe - (168)
13
3
20.000
0.76
3.39
0.60
0.46
2.03
5.0
6.3
7.8
15.87
94.31
474
36
2.00
572.09
572.49
573.77
573.76
579.48
579.48
Pipe - (113)
14
13
33.327
0.00
2.63
0.60
0.00
1.58
5.0
5.9
7.9
12.46
148.1
477
36
4.93
572.49
574.13
573.76
575.25
579.48
582.04
Pipe - (155)
15
14
104.058
2.63
2.63
0.60
1.58
1.58
5.0
5.0
8.2
12�95
49.36
5.56
36
0.55
574.33
574.90
575.38
576.04
582.04
579.73
Pipe - (156)
Project File: Millbridge Phase 7E - BIVIP #1.stm
Number of lines: 15
Run Date: 11/12/2019
NOTES:Intensity = 93.88 / (Inlet time + 14.70) 1 0.82; Return period =Yrs. 25 c = cir e = ellip b = box
Storm Sewers v2018.30

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
Project File: MiUbhdgoPhase 7E'0NP#2.stn
Number of lines: 28 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
27.494
0.00
7.25
0.60
0.00
4.35
5.0
11.0
5.7
24.61
47.17
3.48
36
0.50
554.00
554.14
558.50
558.54
557.42
569.72
Pipe - (124)
2
1
145.483
0.17
6.52
0.60
0.10
3.91
5.0
10.3
5.8
22.68
130.3
10.03
36
3.81
561.21
566.76
562.06
568.29
569.72
580.82
Pipe - (125)
3
2
93.908
0.11
5.47
0.60
0.07
3.28
5.0
9.7
5.9
19.40
47.66
5.64
36
0.51
566.76
567.24
568.29
568.65
580.82
578.10
Pipe - (126)
4
3
%500
0.18
5.36
0.60
0.11
3.22
5.0
9.3
6.0
M25
46.43
5.90
36
0.48
567.24
567.53
568.65
568.93
578.10
577.45
Pipe - (127)
5
4
20.000
0.40
5.18
0.60
0.24
3.11
5.0
9.2
6.0
18.66
29.01
6.26
30
0.50
567.53
567.63
568.99
569.09
577.45
577.45
Pipe - (139)
6
5
51.277
0.14
4.78
0.60
0.08
2�87
5.0
9.0
6.1
1736
29.00
5.96
30
0.50
567.63
567.89
569.09
569.29
577.45
578.76
Pipe - (140)
7
6
21.648
0.14
4.39
0.60
0.08
2M
5.0
8.9
6.1
M01
29.00
5.78
30
0.50
567.89
568.00
569.29
569.35
578.76
578.45
Pipe - (144)
8
7
54�107
0.11
4.25
0.60
0.07
M5
5.0
8.6
6.1
I&M
30.84
&09
30
0.57
571.48
571.79
572.75
573.12
578.45
578.45
Pipe - (128)
9
8
104.000
0.13
4.14
0.60
0.08
2A8
5.0
8.0
6.3
15�55
29.00
5.84
30
0.50
571.79
572.31
573.12
573.64
578.45
580.46
Pipe - (129)
10
9
105.206
0.06
1.83
0.60
0.04
1.10
5.0
7.6
6.4
&99
14.48
678
18
1.90
575.53
577.53
576.26
578.55
580.46
582.46
Pipe - (131)
11
10
50.665
0.08
1.77
0.60
0.05
1.06
5.0
7.4
6.4
6.81
14.68
6.13
18
1.95
577.73
578.72
578.55
579.73
582.46
583.86
Pipe - (132)
12
11
87.537
0.18
1.64
0.60
0.11
0.98
5.0
7.0
6.5
6.41
7.45
474
18
0.50
578.92
579.36
579.99
580.43
583.86
587.34
Pipe - (133)
13
12
20.000
0.19
1.46
0.60
0.11
0.88
5.0
6.8
6.5
5.73
7.42
3.39
18
0.50
579.56
579.66
580.96
581.00
587.34
587.34
Pipe - (151)
14
13
143.547
0.08
1.27
0.60
0.05
0.76
5.0
6.3
6.7
5.09
8.28
4.73
15
1.64
579.86
582.22
581.09
583.13
587.34
590.03
Pipe - (152)
15
14
55�913
0.46
1.19
0.60
0.28
0.71
5.0
6.0
6.7
4.81
8.33
&09
15
1.66
584.82
585.75
585.50
586.64
590.03
589.50
Pipe - (153)
16
15
156.001
0.73
0.73
0.60
0.44
0.44
5.0
5.0
7.0
3.08
12.66
3.81
15
3.85
585.75
591.75
586.64
592.46
589.50
595.50
Pipe - (154)
17
11
20.000
0.05
0.05
0.60
0.03
0.03
5.0
5.0
7.0
0.21
4.57
1.74
15
0.50
579.52
579.62
579.73
579.80
583.86
583.87
Pipe - (150)
18
9
38A47
0.59
2.01
0.60
0.35
1.21
5.0
6.3
6.7
8.04
16.00
5.08
24
0.50
572.81
573.00
573.81
574.01
580.46
577.50
Pipe - (147)
19
18
158.717
0.53
1.42
0.60
0.32
0.85
5.0
5.5
6.9
5.86
18.63
7.20
18
3.15
573.50
578.50
574.08
579.43
577.50
582.50
Pipe - (148)
20
19
100.295
0.89
0.89
0.60
0.53
0.53
5.0
5.0
7.0
3.75
11.17
5.06
15
2.99
578.75
581.75
579.43
582.53
582.50
585.50
Pipe - (149)
21
2
20.000
0.20
0.88
0.60
0.12
0.53
5.0
8.0
6.3
3.31
4.57
4.06
15
0.50
576.48
576.58
577.27
577.37
580.82
580.82
Pipe - (136)
22
21
31739
0.43
1
0.68
0.60
1
0.26
0.41
5.0
7.8
6.3
2.58
4.57
2.90
15
0.50
576.58
576.74
577.50
577.53
580.82
579.68
Pipe - (137)
1
Project File: Millbridge Phase 7E - BIVIP #2.strn
Number of lines: 28
Run Date: 11/12/2019
NOTES:Intensity = 84.35 / (Inlet time + 15.10) 1 0.83; Return period =Yrs. 10 c = cir e = ellip b = box
Storm Sewers v2018.30

Page 2
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
23
22
143.531
0.25
0.25
0.60
0.15
0.15
5.0
5.0
7.0
1.05
9.35
2.05
15
2.10
576.74
579.75
577.71
580.15
579.68
583.50
Pipe - (138)
24
9
20.000
0.17
0.17
0.60
0.10
0.10
5.0
5.0
7.0
0.72
4.57
2.72
15
0.50
576.11
576.21
576.44
576.54
580.46
580.46
Pipe - (130)
25
6
140.906
0.11
0.25
0.60
0.07
0.15
5.0
5.7
6.8
1.03
5.16
3.16
15
0.64
572.51
573.41
572.89
573.81
578.76
583.83
Pipe - (141)
26
25
20.003
0.14
0.14
0.60
0.08
0.08
5.0
5.0
7.0
0.59
4.57
2.11
15
0.50
573.41
573.51
573.81
573.82
583.83
583.83
Pipe - (145)
27
1
93.473
0.20
0.73
0.60
0.12
0.44
5.0
6.8
6.6
2.87
4.57
3.93
15
0.50
562.03
562.50
562.75
563.22
569.72
568.50
Pipe - (158)
28
27
195.074
0.53
0.53
0.60
0.32
0.32
5.0
5.0
7.0
2.24
5.16
3.21
15
0.64
562.50
563.75
563.34
564.35
568.50
568.50
Pipe - (159)
Project File: Millbridge Phase 7E - BIVIP #2.strn
Number of lines: 28
Run Date: 11/12/2019
NOTES:Intensity = 84.35 / (Inlet time + 15.10) 1 0.83; Return period =Yrs. 10 ; c = cir e = ellip b = box
Storm Sewers v2018.30

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
Project File: MiUbhdgoPhase 7E'0NP#2.stn
Number of lines: 28 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
27.494
0.00
7.25
0.60
0.00
4.35
5.0
10.2
&B
29.51
47.17
4.18
36
0.50
554.00
554.14
558.50
558.55
557.42
569.72
Pipe - (124)
2
1
145.483
0.17
6.52
0.60
0.10
3.91
5.0
9.5
6.9
27.13
130.3
10.60
36
3.81
561.21
566.76
562.14
568.44
569.72
580.82
Pipe - (125)
3
2
93.908
0.11
5.47
0.60
0.07
3.28
5.0
9.0
7.1
23.15
47.66
5.98
36
0.51
566.76
567.24
568.44
568.79
580.82
578.10
Pipe - (126)
4
3
%500
0.18
5.36
0.60
0.11
3.22
5.0
8.7
7.1
22.93
46.43
&25
36
0.48
567.24
567.53
568.79
569.07
578.10
577.45
Pipe - (127)
5
4
20.000
0.40
5.18
0.60
0.24
3.11
5.0
8.6
7.1
22.22
29.01
6.52
30
0.50
567.53
567.63
569.17
569.27
577.45
577.45
Pipe - (139)
6
5
51.277
0.14
4.78
0.60
0.08
2�87
5.0
8.4
7.2
20.66
29.00
4.46
30
0.50
567.63
567.89
569.96
570.04
577.45
578.76
Pipe - (140)
7
6
21.648
0.14
4.39
0.60
0.08
2M
5.0
8.3
7.2
1M4
29.00
3.88
30
0.50
567.89
568.00
570.66
570.70
578.76
578.45
Pipe - (144)
8
7
54�107
0.11
4.25
0.60
0.07
M5
5.0
8.1
7.3
M59
30.84
6AI
30
0.57
571.48
571.79
572.88
573.25
578.45
578.45
Pipe - (128)
9
8
104.000
0.13
4.14
0.60
0.08
2A8
5.0
7.6
7A
18A3
29.00
&20
30
0.50
571.79
572.31
573.25
573.76
578.45
580.46
Pipe - (129)
10
9
105.206
0.06
1.83
0.60
0.04
1.10
5.0
7.2
7.5
8.26
14.48
7.17
18
1.90
575.53
577.53
576.34
578.64
580.46
582.46
Pipe - (131)
11
10
50.665
0.08
1.77
0.60
0.05
1.06
5.0
7.0
7.6
8.05
14.68
6.48
18
1.95
577.73
578.72
578.64
579.82
582.46
583.86
Pipe - (132)
12
11
87.537
0.18
1.64
0.60
0.11
0.98
5.0
6.7
77
7.56
7.45
4.80
18
0.50
578.92
579.36
580.17
580.61
583.86
587.34
Pipe - (133)
13
12
20.000
0.19
1.46
0.60
0.11
0.88
5.0
6.6
77
6.75
7.42
3.82
18
0.50
579.56
579.66
581.15
581.23
587.34
587.34
Pipe - (151)
14
13
143.547
0.08
1.27
0.60
0.05
0.76
5.0
6.1
7.9
5.98
8.28
5.31
15
1.64
579.86
582.22
581.34
583.21
587.34
590.03
Pipe - (152)
15
14
55�913
0.46
1.19
0.60
0.28
0.71
5.0
5.9
7.9
5.65
8.33
6A4
15
1.66
584.82
585.75
585.58
586.71
590.03
589.50
Pipe - (153)
16
15
156.001
0.73
0.73
0.60
0.44
0.44
5.0
5.0
8.2
3.59
12.66
4.06
15
3.85
585.75
591.75
586.71
592.51
589.50
595.50
Pipe - (154)
17
11
20.000
0.05
0.05
0.60
0.03
0.03
5.0
5.0
8.2
0.25
4.57
1.42
15
0.50
579.52
579.62
579.82
579.83
583.86
583.87
Pipe - (150)
18
9
38A47
0.59
2.01
0.60
0.35
1.21
5.0
6.2
7.8
9.45
16.00
5.30
24
0.50
572.81
573.00
573.91
574.11
580.46
577.50
Pipe - (147)
19
18
158.717
0.53
1.42
0.60
0.32
0.85
5.0
5.5
8.1
&86
18.63
&14
18
3.15
573.50
578.50
574.33
579.51
577.50
582.50
Pipe - (148)
20
19
100.295
0.89
0.89
0.60
0.53
0.53
5.0
5.0
8.2
4.38
11.17
5.27
15
2.99
578.75
581.75
579.51
582.59
582.50
585.50
Pipe - (149)
21
2
20.000
0.20
0.88
0.60
0.12
0.53
5.0
7.6
7.4
3.92
4.57
4.18
15
0.50
576.48
576.58
577.37
577A7
580.82
580.82
Pipe - (136)
22
21
31739
0.43
1
0.68
0.60
1
0.26
0.41
5.0
7A
7.5
3.05
4.57
2.99
15
0.50
576.58
576.74
577.61
577.66
580.82
579.68
Pipe - (137)
1
Project File: Millbridge Phase 7E - BIVIP #2.strn
Number of lines: 28
Run Date: 11/12/2019
NOTES:Intensity = 93.88 / (Inlet time + 14.70) 1 0.82; Return period =Yrs. 25 c = cir e = ellip b = box
Storm Sewers v2018.30

Page 2
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
23
22
143.531
0.25
0.25
0.60
0.15
0.15
5.0
5.0
8.2
1.23
9.35
2.15
15
2.10
576.74
579.75
577.84
580.19
579.68
583.50
Pipe - (138)
24
9
20.000
0.17
0.17
0.60
0.10
0.10
5.0
5.0
8.2
0.84
4.57
2.84
15
0.50
576.11
576.21
576.47
576.57
580.46
580.46
Pipe - (130)
25
6
140.906
0.11
0.25
0.60
0.07
0.15
5.0
5.6
8.0
1.20
5.16
3.31
15
0.64
572.51
573.41
572.92
573.84
578.76
583.83
Pipe - (141)
26
25
20.003
0.14
0.14
0.60
0.08
0.08
5.0
5.0
8.2
0.69
4.57
216
15
0.50
573.41
573.51
573.84
573.86
583.83
583.83
Pipe - (145)
27
1
93.473
0.20
0.73
0.60
0.12
0.44
5.0
6.5
77
3.38
4.57
4.07
15
0.50
562.03
562.50
562.84
563.30
569.72
568.50
Pipe - (158)
28
27
195.074
0.53
0.53
0.60
0.32
0.32
5.0
5.0
8.2
Z61
5.16
3.37
15
0.64
562.50
563.75
563.43
564.40
568.50
568.50
Pipe - (159)
Project File: Millbridge Phase 7E - BIVIP #2.strn
Number of lines: 28
Run Date: 11/12/2019
NOTES:Intensity = 93.88 / (Inlet time + 14.70) 1 0.82; Return period =Yrs. 25 ; c = cir e = ellip b = box
Storm Sewers v2018.30

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
27
Project File: MiUbhdgoPhase 7E'0NP#3.stn
Number of lines: 31 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
14.383
0.00
6.44
0.60
0.00
3.86
5.0
33.9
3.4
13.08
15.99
5.87
24
0.50
569.00
569.07
570.30
570.44
571.33
574.48
Pipe - (54)
2
1
87.173
0.28
2.80
0.60
0.17
1.68
5.0
33.7
3.4
5.77
27.90
4.15
18
7.06
569.27
575.43
570.95
576.35
574.48
583.76
Pipe - (105)
3
2
12.827
0.41
2.52
0.60
0.25
1.51
5.0
33.6
3.4
5.21
21.19
7.38
18
4.07
577.88
578.40
578.38
579.28
583.76
583.50
Pipe - (106) (1)
4
3
140.462
0.41
2.11
0.60
0.25
1.27
5.0
331
3.4
4.41
21.19
4.34
18
4.07
578.40
584.12
579.28
584.92
583.50
589.50
Pipe - (106)
5
4
157.617
0.45
1.70
0.60
0.27
1.02
5.0
32.4
3.4
3.62
16.41
4.87
18
2.44
584.32
588.17
584.92
588.90
589.50
593.50
Pipe - (107)
6
5
164.396
0.39
1.25
0.60
0.23
0.75
5.0
317
3.5
2.72
10.04
4.82
15
2.42
588.37
592.34
588.90
593.00
593.50
597.50
Pipe - (108)
7
6
155.883
0.86
0.86
0.60
0.52
0.52
5.0
M9
3.5
1.93
13.95
4.20
15
4.67
592.54
599.82
593.00
600.37
597.50
604.50
Pipe - (109)
8
7
126.418
0.00
0.00
0.60
0.00
0.00
5.0
5.0
0.0
0.10
13.41
0.99
15
4.31
600.02
605A7
60037
605.59
604�50
613.60
Pipe - (167)
9
1
79M1
0.09
3.64
0.60
0.05
2�18
5.0
%9
4A
9.70
37.59
4.42
24
2.76
569.27
571.47
570.95
572.58
574.48
584.15
Pipe - (78)
10
9
89738
0.23
2.48
0.60
0.14
1.49
5.0
19A
4.5
&69
25.60
4.78
24
1.28
571.67
572.82
572.58
573.74
584.15
587.93
Pipe - (79)
11
10
225.462
0.21
1.21
0.60
0.13
0.73
5.0
18.0
47
3.38
9.74
4.59
18
0.86
582.50
584.44
583.11
585.14
587.93
595.02
Pipe - (80)
12
11
201.288
0.12
0.66
0.60
0.07
0.40
5.0
15.7
4.9
1.95
19.36
3.66
18
3.40
584.64
591.48
585.14
592.01
595.02
599.93
Pipe - (82)
13
12
114.712
0.24
0.54
0.60
0.14
0.32
5.0
14.2
5.1
1.67
12.48
3.19
18
1.41
591.48
593.10
592.01
593.58
599.93
605.12
Pipe - (83)
14
13
20.000
0.13
0.30
0.60
0.08
0.18
5.0
13.8
5.2
0.94
7.43
2.38
18
0.50
593.10
593.20
593.58
593.56
605.12
605.12
Pipe - (84)
15
14
4&012
0.15
0.17
0.60
0.09
0.10
5.0
1M
5.5
0.56
7.51
2�09
18
0.51
593.20
593.42
593.56
593.70
605�12
601.81
Pipe - (85)
16
15
20.000
0.02
0.02
0.60
0.01
0.01
5.0
5.0
7.0
0.08
7.43
0.28
18
0.50
593.42
593.52
593.82
593.82
601 �81
601.81
Pipe - (86)
17
11
20.000
0.27
0.34
0.60
0.16
0.20
5.0
14.5
5.1
1.04
7.42
2.49
18
0.50
584.64
584.74
585.14
585.12
595.02
595.02
Pipe - (102)
18
17
4&098
0.05
0.07
0.60
0.03
0.04
5.0
9.8
5.9
0.25
7.42
1.21
18
0.50
584.74
584.97
585.12
585.17
595.02
592.57
Pipe - (103)
19
18
20.000
0.02
0.02
0.60
0.01
0.01
5.0
5.0
7.0
0.08
4.57
1.43
15
0.50
585.22
585.32
585.34
585.44
592.57
592.57
Pipe - (104)
20
9
20.000
0.05
1.07
0.60
0.03
0.64
5.0
9.6
5.9
3.80
7.43
3.82
18
0.50
571.72
571.82
572.58
572.61
584.15
584.14
Pipe - (87)
21
20
62.596
0.39
1.02
0.60
0.23
0.61
5.0
9.3
6.0
3.66
4.83
4.33
15
0.56
572.32
572.67
573.13
573.48
584.14
582.61
Pipe - (88)
22
21
21.680
0.09
0.63
0.60
1
0.05
0.38
5.0
9.1
6.0
2.28
5.00
3.02
15
0.60
572.67
572.80
573.68
573.40
582.61
582.55
Pipe - (89)
1
Project File: Millbridge Phase 7E - BIVIP #3.stm
Number of lines: 31
Run Date: 11/12/2019
NOTES:Intensity = 84.35 / (Inlet time + 15.10) 1 0.83; Return period =Yrs. 10 c = cir e = ellip b = box
Storm Sewers v2018.30

Page 2
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
23
22
96.594
0.02
0.54
0.60
0.01
0.32
5.0
8.2
6.2
2.01
4.41
3.50
15
0.47
572.80
573.25
573.40
573.84
582.55
583.74
Pipe - (90)
24
23
44.945
0.02
0.52
0.60
0.01
0.31
5.0
7.8
6.3
1.97
4.62
3.03
15
0.51
573.25
573.48
574.00
574.06
583.74
583.59
Pipe - (91)
25
24
19.930
0.11
0.50
0.60
0.07
0.30
5.0
7.6
6.4
1.91
4.57
3.56
15
0.50
577.48
577.58
578.04
578.14
583.59
583.59
Pipe - (92)
26
25
95�208
0.10
0.39
0.60
0.06
0.23
5.0
6.4
6.7
1.56
4.58
2A8
15
0.50
577.58
578.06
578.44
578.58
583.59
582.41
Pipe - (93)
27
26
20.000
0.07
0.07
0.60
0.04
0.04
5.0
5.0
7.0
0.30
4.57
0.34
15
0.50
578.06
578.16
578.94
578.94
582.41
582.41
Pipe - (94)
28
26
49.720
0.22
0.22
0.60
0.13
0.13
5.0
5.0
7.0
0.93
4.87
1.99
15
0.57
578.06
578.34
578.94
578.72
582.41
582.50
Pipe - (157)
29
10
20.014
0.15
1.04
0.60
0.09
0.62
5.0
6.3
6.7
4.17
15.99
4.20
24
0.50
576.77
576.87
577.47
577.59
587.93
587.90
Pipe - (98)
30
29
72�357
0.34
0.89
0.60
0.20
0.53
5.0
5.7
6.8
3.65
7.42
4.18
18
0.50
576.87
577.23
577.61
577.97
587.90
582.50
Pipe - (99)
31
30
54�057
0.55
0.55
0.60
0.33
0.33
5.0
5.0
7.0
232
7.43
2M
18
0.50
577.23
577.50
578.11
578.14
582.50
582.50
Pipe - (100)
Project File: Millbridge Phase 7E - BIVIP #3.stm
Number of lines: 31
Run Date: 11/12/2019
NOTES:Intensity = 84.35 / (Inlet time + 15.10) 1 0.83; Return period =Yrs. 10 c = cir e = ellip b = box
Storm Sewers v2018.30

Hydraflow Storm Sewers Extension for Autodesk@ AutoCAD@ Civil 3D@ Plan
27
Project File: MiUbhdgoPhase 7E'0NP#3.stn
Number of lines: 31 1 Date: 11/12/2019
Storm Sewers v2018.30

Page 1
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
I
End
14.383
0.00
6.44
0.60
0.00
3.86
5.0
33.5
3.9
15.36
15.99
6.24
24
0.50
569.00
569.07
570.41
570.59
571.33
574.48
Pipe - (54)
2
1
87.173
0.28
2.80
0.60
0.17
1.68
5.0
33.3
4.0
6.76
27.90
4.60
18
7.06
569.27
575.43
571.15
576.43
574.48
583.76
Pipe - (105)
3
2
12.827
0.41
2.52
0.60
0.25
1.51
5.0
33.2
4.0
6.10
21.19
7.75
18
4.07
577.88
578.40
578.43
579.35
583.76
583.50
Pipe - (106) (1)
4
3
140.462
0.41
2.11
0.60
0.25
1.27
5.0
3M
4.0
5.16
21.19
4.59
18
4.07
578.40
584.12
579.35
584.99
583.50
589.50
Pipe - (106)
5
4
157.617
0.45
1.70
0.60
0.27
1.02
5.0
32.2
4.0
4.22
16.41
5.01
18
2.44
584.32
588.17
584.99
588.96
589.50
593.50
Pipe - (107)
6
5
164.396
0.39
1.25
0.60
0.23
0.75
5.0
31 �6
4.1
3.16
10.04
4.96
15
2.42
588.37
592.34
588.96
593.06
593.50
597.50
Pipe - (108)
7
6
155.883
0.86
0.86
0.60
0.52
0.52
5.0
M9
4.1
Z23
13.95
4.29
15
4.67
592.54
599.82
593.06
600.42
597.50
604.50
Pipe - (109)
8
7
126.418
0.00
0.00
0.60
0.00
0.00
5.0
5.0
0.0
0.10
13.41
0.97
15
4.31
600.02
605A7
600A2
605.59
604�50
613.60
Pipe - (167)
9
1
79M1
0.09
3.64
0.60
0.05
2�18
5.0
17�8
5.5
11 �91
37.59
4.86
24
2.76
569.27
571.47
571.15
572.71
574.48
584.15
Pipe - (78)
10
9
89738
0.23
2.48
0.60
0.14
1.49
5.0
173
5.5
8.21
25.60
5.04
24
1.28
571.67
572.82
572.71
573.84
584.15
587.93
Pipe - (79)
11
10
225.462
0.21
1.21
0.60
0.13
0.73
5.0
16.1
5.7
4.13
9.74
4.87
18
0.86
582.50
584.44
583.18
585.22
587.93
595.02
Pipe - (80)
12
11
201.288
0.12
0.66
0.60
0.07
0.40
5.0
14.2
6.0
2.38
19.36
3.76
18
3.40
584.64
591.48
585.22
592.06
595.02
599.93
Pipe - (82)
13
12
114.712
0.24
0.54
0.60
0.14
0.32
5.0
12.9
6.2
2.02
12.48
3.37
18
1.41
591.48
593.10
592.06
593.64
599.93
605.12
Pipe - (83)
14
13
20.000
0.13
0.30
0.60
0.08
0.18
5.0
12.5
6.3
1.13
7.43
2.51
18
0.50
593.10
593.20
593.64
593.60
605.12
605.12
Pipe - (84)
15
14
4&012
0.15
0.17
0.60
0.09
0.10
5.0
11�O
6.6
0.67
7.51
2.21
18
0.51
593.20
593.42
593.60
593.72
605�12
601.81
Pipe - (85)
16
15
20.000
0.02
0.02
0.60
0.01
0.01
5.0
5.0
8.2
0.10
7.43
0.53
18
0.50
593.42
593.52
593.72
593.73
601 �81
601.81
Pipe - (86)
17
11
20.000
0.27
0.34
0.60
0.16
0.20
5.0
13.1
6.2
1.26
7.42
2.56
18
0.50
584.64
584.74
585.22
585.16
595.02
595.02
Pipe - (102)
18
17
4&098
0.05
0.07
0.60
0.03
0.04
5.0
9.2
7.0
0.29
7.42
1.23
18
0.50
584.74
584.97
585.16
585.20
595.02
592.57
Pipe - (103)
19
18
20.000
0.02
0.02
0.60
0.01
0.01
5.0
5.0
8.2
0.10
4.57
1.51
15
0.50
585.22
585.32
585.35
585.45
592.57
592.57
Pipe - (104)
20
9
20.000
0.05
1.07
0.60
0.03
0.64
5.0
9.0
7.1
4.54
7.43
3.83
18
0.50
571.72
571.82
572.71
572.74
584.15
584.14
Pipe - (87)
21
20
62.596
0.39
1.02
0.60
0.23
0.61
5.0
8.7
7.1
4.37
4.83
4.45
15
0.56
572.32
572.67
573.25
573.60
584.14
582.61
Pipe - (88)
22
21
21.680
0.09
0.63
0.60
1
0.05
0.38
5.0
8.5
7.2
2.71
5.00
3.22
15
0.60
572.67
572.80
573.80
573.46
582.61
582.55
Pipe - (89)
1
Project File: Millbridge Phase 7E - BIVIP #3.stm
Number of lines: 31
Run Date: 11/12/2019
NOTES:Intensity = 93.88 / (Inlet time + 14.70) 1 0.82; Return period =Yrs. 25 c = cir e = ellip b = box
Storm Sewers v2018.30

Page 2
Station
Len
Drng Area
Rnoff
Area x C
Te
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(1)
flow
full
Incr
Total
otal
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
e
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft1s)
(in)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
23
22
96.594
0.02
0.54
0.60
0.01
0.32
5.0
7.8
7.4
2.39
4.41
3.66
15
0.47
572.80
573.25
573.46
573.90
582.55
583.74
Pipe - (90)
24
23
44.945
0.02
0.52
0.60
0.01
0.31
5.0
7.4
7.5
2.33
4.62
3.12
15
0.51
573.25
573.48
574.08
574.14
583.74
583.59
Pipe - (91)
25
24
19.930
0.11
0.50
0.60
0.07
0.30
5.0
7.2
7.5
2.26
4.57
3.71
15
0.50
577.48
577.58
578.10
578.20
583.59
583.59
Pipe - (92)
26
25
95�208
0.10
0.39
0.60
0.06
0.23
5.0
6.2
7.8
1.83
4.58
2�54
15
0.50
577.58
578.06
578.52
578.65
583.59
582.41
Pipe - (93)
27
26
20.000
0.07
0.07
0.60
0.04
0.04
5.0
5.0
8.2
0.34
4.57
0.37
15
0.50
578.06
578.16
579.01
579.01
582.41
582.41
Pipe - (94)
28
26
49.720
0.22
0.22
0.60
0.13
0.13
5.0
5.0
8.2
1.08
4.87
2�09
15
0.57
578.06
578.34
579.01
578.75
582.41
582.50
Pipe - (157)
29
10
20.014
0.15
1.04
0.60
0.09
0.62
5.0
6.1
7.9
4.90
15.99
4.40
24
0.50
576.77
576.87
577.53
577.65
587.93
587.90
Pipe - (98)
30
29
72�357
0.34
0.89
0.60
0.20
0.53
5.0
5.6
8.0
4.28
7.42
4.34
18
0.50
576.87
577.23
577.68
578.05
587.90
582.50
Pipe - (99)
31
30
54�057
0.55
0.55
0.60
0.33
0.33
5.0
5.0
8.2
2.71
7.43
2.72
18
0.50
577.23
577.50
578.19
578.23
582.50
582.50
Pipe - (100)
Project File: Millbridge Phase 7E - BIVIP #3.stm
Number of lines: 31
Run Date: 11/12/2019
NOTES:Intensity = 93.88 / (Inlet time + 14.70) 1 0.82; Return period =Yrs. 25 c = cir e = ellip b = box
Storm Sewers v2018.30

2S 13S
1 S Pre -Development #2 Pre -Development #3
Pre -Development #1
Pre=45.28 AC
9S 10S
8S L
1 BMr#2 BM #3
BMry #1
A
7P
BMP 1 BMP#2 12S 14S
BM #3
11 S \ Bypass #2 Post Development #3
Bypass #1
Post Development #1 17L
Post Development #2 Post= 45.28 AC
Subcat Reach on Link Routing Diagram for Millbridge Phase 7E
Prepared by WK Dickson & Co., Printed 11/12/2019
HydroCAD® 10.00-15 s/n 01460 © 2015 HydroCAD Software Solutions LLC

Millbridge Phase 7E
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 2
Area Listing (all nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
12.980
63
(8S)
9.670
80
(9S)
6.900
79
(10S)
0.060
98
Paved roads w/curbs & sewers, HSG B (1 S)
2.040
98
Water Surface, HSG B (1 S, 11 S)
52.870
55
Woods, Good, HSG B (1 S, 2S, 13S, 14S)
6.040
58
Woods/grass comb., Good, HSG B (11 S, 12S, 14S)
90.560
62
TOTAL AREA

Millbridge Phase 7E
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 3
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000
HSG A
61.010
HSG B 1 S, 2S, 11 S, 12S, 13S, 14S
0.000
HSG C
0.000
HSG D
29.550
Other 8S, 9S, 10S
90.560
TOTAL AREA

Millbridge Phase 7E
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 4
Ground Covers (all nodes)
HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment
(acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers
0.000 0.000 0.000 0.000 29.550 29.550 8S,
9S
10S
0.000
0.060
0.000
0.000
0.000
0.060
Paved roads w/curbs & sewers
is
0.000
2.040
0.000
0.000
0.000
2.040
Water Surface
is,
11S
0.000
52.870
0.000
0.000
0.000
52.870
Woods, Good
is,
2S,
13S,
14S
0.000
6.040
0.000
0.000
0.000
6.040
Woods/grass comb., Good
11 S,
12S,
14S
0.000
61.010
0.000
0.000
29.550
90.560
TOTAL AREA

Millbridge Phase 7E
Prepared by WK Dickson & Co.
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC
Printed
11/12/2019
Page 5
Pipe Listing
(all nodes)
Line# Node
In -Invert Out -Invert
Length
Slope n
Diam/Width
Height
Inside -Fill
Number
(feet)
(feet)
(feet)
(ft/ft)
(inches)
(inches)
(inches)
1 5P
561.90
560.89
187.7
0.0054 0.013
36.0
0.0
0.0
2 6P
553.90
553.00
92.5
0.0097 0.013
36.0
0.0
0.0
3 7P
565.31
565.00
61.2
0.0051 0.013
24.0
0.0
0.0

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 6
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=0.00"
Tc=21.7 min CN=57 Runoff=0.00 cfs 0.000 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=0.00"
Tc=24.9 min CN=55 Runoff=0.00 cfs 0.000 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=0.00"
Tc=5.0 min CN=63 Runoff=0.00 cfs 0.000 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=0.08"
Tc=5.0 min CN=80 Runoff=1.08 cfs 0.067 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=0.07"
Tc=5.0 min CN=79 Runoff=0.58 cfs 0.040 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=0.00"
Tc=16.9 min CN=65 Runoff=0.00 cfs 0.000 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=0.00"
Tc=24.9 min CN=58 Runoff=0.00 cfs 0.000 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=0.00"
Tc=20.7 min CN=55 Runoff=0.00 cfs 0.000 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=0.00"
Tc=20.7 min CN=55 Runoff=0.00 cfs 0.000 of
Pond 5P: BMP #1 Peak EIev=566.50' Storage=0 cf Inflow=0.00 cfs 0.000 of
Primary=0.00 cfs 0.000 of Secondary=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of
Pond 6P: BMP #2 Peak EIev=558.74' Storage=2,449 cf Inflow=1.08 cfs 0.067 of
Primary=0.06 cfs 0.067 of Secondary=0.00 cfs 0.000 of Outflow=0.06 cfs 0.067 of
Pond 7P: BMP #3 Peak EIev=568.67' Storage=1,579 cf Inflow=0.58 cfs 0.040 of
Primary=0.02 cfs 0.039 of Secondary=0.00 cfs 0.000 of Outflow=0.02 cfs 0.039 of
Link 17L: Post Development#2 Inflow=0.02 cfs 0.039 of
Primary=0.02 cfs 0.039 of
Link 18L: Post Development#1
Inflow=0.06 cfs 0.067 of
Primary=0.06 cfs 0.067 of
Total Runoff Area = 90.560 ac Runoff Volume = 0.107 of Average Runoff Depth = 0.01"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 7
Summary for Subcatchment 1S: Pre -Development #1
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
29.510 55 Woods, Good, HSG B
1.020 98 Water Surface, HSG B
0.060 98 Paved roads w/curbs & sewers. HSG B
30.590 57 Weighted Average
29.510 96.47% Pervious Area
1.080 3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
N
3
0
LL
Subcatchment 1S: Pre -Development #1
Hydrograph
Charlotte 6yhr'A-inch
Rainfall=1.00"
Renoff Area=30.590 at.
Runoff VpIU'rnq=0r060 clf
Runoff Depth 0!001'
TcT21.7 min
�,CN'=57
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 8
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 9
Summary for Subcatchment 2S: Pre -Development #2
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
� � � � � � � � � � � � � � � � ■Runoff
Charlotte 6yhr'A-inch
Rainfall1=1.00"
Run'�off Area=5.620 aI
kunoff VpI6mp=Or060 clf
Runoff Depthl, 0!0W
3TcT24.9 min
0
LL
CN=55
0.00 cfs
.0 65 70 75 :0 5 •0

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 10
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 11
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
■ Runoff
Charlotte 6-hr,14nch
Rainfall=1!00
Renoff Area=12.980 at
Runoff Vplu',mp=0r0010 clf
Runoff Depth, 0!001'
Te=5.0 min
CN,=6$
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 12
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 13
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.08 cfs @ 3.23 hrs, Volume= 0.067 af, Depth= 0.08"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
� � � � � � � � � � � � � � � � � � � � ■Runoff
1.08 cfs 1T1T /N►
-'------ I' ------ II ------ ------ II---Qh�T]ofte 17yhT'I t ino-
1 Rainfall=1.00
Runoff Area=9.670 at
Runoff Vplu',mp=0I Of
Runoff Depth', 0!0W'
LL
Tc=5.0 min
CN=8Q
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 14
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.05
0.26
5.00
0.96
0.07
0.16
6.00
1.00
0.08
0.11
7.00
1.00
0.08
0.00
8.00
1.00
0.08
0.00
9.00
1.00
0.08
0.00
10.00
1.00
0.08
0.00
11.00
1.00
0.08
0.00
12.00
1.00
0.08
0.00
13.00
1.00
0.08
0.00
14.00
1.00
0.08
0.00
15.00
1.00
0.08
0.00
16.00
1.00
0.08
0.00
17.00
1.00
0.08
0.00
18.00
1.00
0.08
0.00
19.00
1.00
0.08
0.00
20.00
1.00
0.08
0.00
21.00
1.00
0.08
0.00
22.00
1.00
0.08
0.00
23.00
1.00
0.08
0.00
24.00
1.00
0.08
0.00
25.00
1.00
0.08
0.00
26.00
1.00
0.08
0.00
27.00
1.00
0.08
0.00
28.00
1.00
0.08
0.00
29.00
1.00
0.08
0.00
30.00
1.00
0.08
0.00
31.00
1.00
0.08
0.00
32.00
1.00
0.08
0.00
33.00
1.00
0.08
0.00
34.00
1.00
0.08
0.00
35.00
1.00
0.08
0.00
36.00
1.00
0.08
0.00
37.00
1.00
0.08
0.00
38.00
1.00
0.08
0.00
39.00
1.00
0.08
0.00
40.00
1.00
0.08
0.00
41.00
1.00
0.08
0.00
42.00
1.00
0.08
0.00
43.00
1.00
0.08
0.00
44.00
1.00
0.08
0.00
45.00
1.00
0.08
0.00
46.00
1.00
0.08
0.00
47.00
1.00
0.08
0.00
48.00
1.00
0.08
0.00
49.00
1.00
0.08
0.00
50.00
1.00
0.08
0.00
51.00
1.00
0.08
0.00
52.00
1.00
0.08
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.08
0.00
54.00
1.00
0.08
0.00
55.00
1.00
0.08
0.00
56.00
1.00
0.08
0.00
57.00
1.00
0.08
0.00
58.00
1.00
0.08
0.00
59.00
1.00
0.08
0.00
60.00
1.00
0.08
0.00
61.00
1.00
0.08
0.00
62.00
1.00
0.08
0.00
63.00
1.00
0.08
0.00
64.00
1.00
0.08
0.00
65.00
1.00
0.08
0.00
66.00
1.00
0.08
0.00
67.00
1.00
0.08
0.00
68.00
1.00
0.08
0.00
69.00
1.00
0.08
0.00
70.00
1.00
0.08
0.00
71.00
1.00
0.08
0.00
72.00
1.00
0.08
0.00
73.00
1.00
0.08
0.00
74.00
1.00
0.08
0.00
75.00
1.00
0.08
0.00
76.00
1.00
0.08
0.00
77.00
1.00
0.08
0.00
78.00
1.00
0.08
0.00
79.00
1.00
0.08
0.00
80.00
1.00
0.08
0.00
81.00
1.00
0.08
0.00
82.00
1.00
0.08
0.00
83.00
1.00
0.08
0.00
84.00
1.00
0.08
0.00
85.00
1.00
0.08
0.00
86.00
1.00
0.08
0.00
87.00
1.00
0.08
0.00
88.00
1.00
0.08
0.00
89.00
1.00
0.08
0.00
90.00
1.00
0.08
0.00
91.00
1.00
0.08
0.00
92.00
1.00
0.08
0.00
93.00
1.00
0.08
0.00
94.00
1.00
0.08
0.00
95.00
1.00
0.08
0.00
96.00
1.00
0.08
0.00
97.00
1.00
0.08
0.00
98.00
1.00
0.08
0.00
99.00
1.00
0.08
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 15
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.58 cfs @ 3.25 hrs, Volume= 0.040 af, Depth= 0.07"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
0.65
0.5$ CfS --'�I--i---1---i---1---r-- i---1---i---1---r-- i---1I--i---1---i---1---r-- ■Runoff
rt---1---t---1---r---1---r--rt---1---t---1--- ih4rlgtte-6yhr''F='rnc�--
0.55
rt1 --- 1 Y--- r--- r--rt--- t--- r------ Rai rfarl=1 �00"--
0.s
--- T--- r--- r--7--- T--- Rrun7off Me&6.900 ad--
0.45 1 1 1
0.4 T---1---T---1---r---1---r--7---1---T- F u-I-ff VoluTne=0r04'10 af
7--- I --- T--- I---r--- I---r--7--- I---T--- I --- r--7-- ff T---I---r---I---r
--
V 0.35 1 1 1 1 1 1 1 1 1 1 1 1 Runoff Depth1=0.071' -
7---r--T---1---r---1---r- 7- - T- - r--7- r T- r r
0 03 Te=5.0 Min
LL I 1 1
7---I - T ---I-- r ---I-- r--T---I-- T--- I_- r--T---I --T I r I r--
0.25----T------1---,---1---, -----1---T ---1---, -----1---
02
7---r--T---1---r---1---r--7---1---T---1---r--7---r --T---1---r---1---r--
0.15
I 1 1
1 T---1- r---1- r--T---1- T---1- r--T- - -T T---1- 1---1---T--
0.1
0.05
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 16
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.04
0.16
5.00
0.96
0.06
0.10
6.00
1.00
0.07
0.07
7.00
1.00
0.07
0.00
8.00
1.00
0.07
0.00
9.00
1.00
0.07
0.00
10.00
1.00
0.07
0.00
11.00
1.00
0.07
0.00
12.00
1.00
0.07
0.00
13.00
1.00
0.07
0.00
14.00
1.00
0.07
0.00
15.00
1.00
0.07
0.00
16.00
1.00
0.07
0.00
17.00
1.00
0.07
0.00
18.00
1.00
0.07
0.00
19.00
1.00
0.07
0.00
20.00
1.00
0.07
0.00
21.00
1.00
0.07
0.00
22.00
1.00
0.07
0.00
23.00
1.00
0.07
0.00
24.00
1.00
0.07
0.00
25.00
1.00
0.07
0.00
26.00
1.00
0.07
0.00
27.00
1.00
0.07
0.00
28.00
1.00
0.07
0.00
29.00
1.00
0.07
0.00
30.00
1.00
0.07
0.00
31.00
1.00
0.07
0.00
32.00
1.00
0.07
0.00
33.00
1.00
0.07
0.00
34.00
1.00
0.07
0.00
35.00
1.00
0.07
0.00
36.00
1.00
0.07
0.00
37.00
1.00
0.07
0.00
38.00
1.00
0.07
0.00
39.00
1.00
0.07
0.00
40.00
1.00
0.07
0.00
41.00
1.00
0.07
0.00
42.00
1.00
0.07
0.00
43.00
1.00
0.07
0.00
44.00
1.00
0.07
0.00
45.00
1.00
0.07
0.00
46.00
1.00
0.07
0.00
47.00
1.00
0.07
0.00
48.00
1.00
0.07
0.00
49.00
1.00
0.07
0.00
50.00
1.00
0.07
0.00
51.00
1.00
0.07
0.00
52.00
1.00
0.07
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.07
0.00
54.00
1.00
0.07
0.00
55.00
1.00
0.07
0.00
56.00
1.00
0.07
0.00
57.00
1.00
0.07
0.00
58.00
1.00
0.07
0.00
59.00
1.00
0.07
0.00
60.00
1.00
0.07
0.00
61.00
1.00
0.07
0.00
62.00
1.00
0.07
0.00
63.00
1.00
0.07
0.00
64.00
1.00
0.07
0.00
65.00
1.00
0.07
0.00
66.00
1.00
0.07
0.00
67.00
1.00
0.07
0.00
68.00
1.00
0.07
0.00
69.00
1.00
0.07
0.00
70.00
1.00
0.07
0.00
71.00
1.00
0.07
0.00
72.00
1.00
0.07
0.00
73.00
1.00
0.07
0.00
74.00
1.00
0.07
0.00
75.00
1.00
0.07
0.00
76.00
1.00
0.07
0.00
77.00
1.00
0.07
0.00
78.00
1.00
0.07
0.00
79.00
1.00
0.07
0.00
80.00
1.00
0.07
0.00
81.00
1.00
0.07
0.00
82.00
1.00
0.07
0.00
83.00
1.00
0.07
0.00
84.00
1.00
0.07
0.00
85.00
1.00
0.07
0.00
86.00
1.00
0.07
0.00
87.00
1.00
0.07
0.00
88.00
1.00
0.07
0.00
89.00
1.00
0.07
0.00
90.00
1.00
0.07
0.00
91.00
1.00
0.07
0.00
92.00
1.00
0.07
0.00
93.00
1.00
0.07
0.00
94.00
1.00
0.07
0.00
95.00
1.00
0.07
0.00
96.00
1.00
0.07
0.00
97.00
1.00
0.07
0.00
98.00
1.00
0.07
0.00
99.00
1.00
0.07
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 17
Summary for Subcatchment 11S: Bypass #1
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN
Description
4.560 58
Woods/grass comb., Good, HSG B
1.020 98
Water Surface, HSG B
5.580 65
Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
16.9
Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
1 � � � � � � � � � � � � � � � � � � � ❑Runoff
Oharlpttp 6ihr'A4nch
Rainfall=1!00
Runoff Area=5.580 at
Runoff V0161me=0r060 clf
Runoff Depth0.001'
LL TcyT16.9 Min
+CN'I=6$
0.00 cfs
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 18
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 19
Summary for Subcatchment 12S: Bypass #2
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
� � � � � � � � � � � � � � � � � � � � ■Runoff
Charlotte 6yhr'A-inch
Rainfall)=1.00"
Run'�off Area=1.160 aI
Fkunoff VpI6mp=0 060 clf
Runoff Depth), O.OW'
3TcT24.9 min
LL0
CN=50
0.00 cfs
.0 65 70 75 :0 5 •0

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 20
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 21
Summary for Subcatchment 13S: Pre -Development #3
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
� � � � � � � � � � � � � � � � ■Runoff
Charlotte 6yhr'A-inch
Rainfall1=1.00"
Runoff Area=9.070 aI
kunoff VpI6mp=Or060 clf
Runoff Depth 0!0W
3TcT20.7 min
0
LL
CN=55
0.00 cfs
.0 65 70 75 :0 5 •0

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 22
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 23
Summary for Subcatchment 14S: Post Development #3
[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Charlotte 6-hr 1-inch Rainfall=1.00"
Area (ac) CN
Description
8.670 55
Woods, Good, HSG B
0.320 58
Woods/grass comb., Good, HSG B
8.990 55
Weighted Average
8.990
100.00% Pervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
20.7
Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
■ Runoff
Oharipttp 6ihr'l4nch
Rainfall=1!00
Run�off Area=8.990 at
Runoff VQIu',mp=0r000 clf
Runoff Depth, 0!001'
TcT20.7 Min
RCN',=5$
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 24
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.04
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.39
0.00
0.00
4.00
0.88
0.00
0.00
5.00
0.96
0.00
0.00
6.00
1.00
0.00
0.00
7.00
1.00
0.00
0.00
8.00
1.00
0.00
0.00
9.00
1.00
0.00
0.00
10.00
1.00
0.00
0.00
11.00
1.00
0.00
0.00
12.00
1.00
0.00
0.00
13.00
1.00
0.00
0.00
14.00
1.00
0.00
0.00
15.00
1.00
0.00
0.00
16.00
1.00
0.00
0.00
17.00
1.00
0.00
0.00
18.00
1.00
0.00
0.00
19.00
1.00
0.00
0.00
20.00
1.00
0.00
0.00
21.00
1.00
0.00
0.00
22.00
1.00
0.00
0.00
23.00
1.00
0.00
0.00
24.00
1.00
0.00
0.00
25.00
1.00
0.00
0.00
26.00
1.00
0.00
0.00
27.00
1.00
0.00
0.00
28.00
1.00
0.00
0.00
29.00
1.00
0.00
0.00
30.00
1.00
0.00
0.00
31.00
1.00
0.00
0.00
32.00
1.00
0.00
0.00
33.00
1.00
0.00
0.00
34.00
1.00
0.00
0.00
35.00
1.00
0.00
0.00
36.00
1.00
0.00
0.00
37.00
1.00
0.00
0.00
38.00
1.00
0.00
0.00
39.00
1.00
0.00
0.00
40.00
1.00
0.00
0.00
41.00
1.00
0.00
0.00
42.00
1.00
0.00
0.00
43.00
1.00
0.00
0.00
44.00
1.00
0.00
0.00
45.00
1.00
0.00
0.00
46.00
1.00
0.00
0.00
47.00
1.00
0.00
0.00
48.00
1.00
0.00
0.00
49.00
1.00
0.00
0.00
50.00
1.00
0.00
0.00
51.00
1.00
0.00
0.00
52.00
1.00
0.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
1.00
0.00
0.00
54.00
1.00
0.00
0.00
55.00
1.00
0.00
0.00
56.00
1.00
0.00
0.00
57.00
1.00
0.00
0.00
58.00
1.00
0.00
0.00
59.00
1.00
0.00
0.00
60.00
1.00
0.00
0.00
61.00
1.00
0.00
0.00
62.00
1.00
0.00
0.00
63.00
1.00
0.00
0.00
64.00
1.00
0.00
0.00
65.00
1.00
0.00
0.00
66.00
1.00
0.00
0.00
67.00
1.00
0.00
0.00
68.00
1.00
0.00
0.00
69.00
1.00
0.00
0.00
70.00
1.00
0.00
0.00
71.00
1.00
0.00
0.00
72.00
1.00
0.00
0.00
73.00
1.00
0.00
0.00
74.00
1.00
0.00
0.00
75.00
1.00
0.00
0.00
76.00
1.00
0.00
0.00
77.00
1.00
0.00
0.00
78.00
1.00
0.00
0.00
79.00
1.00
0.00
0.00
80.00
1.00
0.00
0.00
81.00
1.00
0.00
0.00
82.00
1.00
0.00
0.00
83.00
1.00
0.00
0.00
84.00
1.00
0.00
0.00
85.00
1.00
0.00
0.00
86.00
1.00
0.00
0.00
87.00
1.00
0.00
0.00
88.00
1.00
0.00
0.00
89.00
1.00
0.00
0.00
90.00
1.00
0.00
0.00
91.00
1.00
0.00
0.00
92.00
1.00
0.00
0.00
93.00
1.00
0.00
0.00
94.00
1.00
0.00
0.00
95.00
1.00
0.00
0.00
96.00
1.00
0.00
0.00
97.00
1.00
0.00
0.00
98.00
1.00
0.00
0.00
99.00
1.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 25
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-inch event
Inflow =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Outflow =
0.00 cfs @
0.00 hrs, Volume=
0.000 af, Atten= 0%, Lag= 0.0 min
Primary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind
method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 566.50'
@ 0.00 hrs
Surf.Area= 13,995 sf
Storage= 0 cf
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= (not calculated: no inflow)
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L1=RCP_Round 36" (Passes 0.00 cfs of 57.25 cfs potential flow)
�2=WQ Orrfice ( Controls 0.00 cfs)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 26
N
U
3
0
LL
1
n nn r-fs
0.00 cfs
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Hydrograph
Ihf1OW Aee9=112.980 ae
Pdak EIeV=5',66,50'
Storage=Q c';f
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 27
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 28
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
566.50
0.00
0.00
0.00
2.50
0.00
566.50
0.00
0.00
0.00
5.00
0.00
566.50
0.00
0.00
0.00
7.50
0.00
566.50
0.00
0.00
0.00
10.00
0.00
566.50
0.00
0.00
0.00
12.50
0.00
566.50
0.00
0.00
0.00
15.00
0.00
566.50
0.00
0.00
0.00
17.50
0.00
566.50
0.00
0.00
0.00
20.00
0.00
566.50
0.00
0.00
0.00
22.50
0.00
566.50
0.00
0.00
0.00
25.00
0.00
566.50
0.00
0.00
0.00
27.50
0.00
566.50
0.00
0.00
0.00
30.00
0.00
566.50
0.00
0.00
0.00
32.50
0.00
566.50
0.00
0.00
0.00
35.00
0.00
566.50
0.00
0.00
0.00
37.50
0.00
566.50
0.00
0.00
0.00
40.00
0.00
566.50
0.00
0.00
0.00
42.50
0.00
566.50
0.00
0.00
0.00
45.00
0.00
566.50
0.00
0.00
0.00
47.50
0.00
566.50
0.00
0.00
0.00
50.00
0.00
566.50
0.00
0.00
0.00
52.50
0.00
566.50
0.00
0.00
0.00
55.00
0.00
566.50
0.00
0.00
0.00
57.50
0.00
566.50
0.00
0.00
0.00
60.00
0.00
566.50
0.00
0.00
0.00
62.50
0.00
566.50
0.00
0.00
0.00
65.00
0.00
566.50
0.00
0.00
0.00
67.50
0.00
566.50
0.00
0.00
0.00
70.00
0.00
566.50
0.00
0.00
0.00
72.50
0.00
566.50
0.00
0.00
0.00
75.00
0.00
566.50
0.00
0.00
0.00
77.50
0.00
566.50
0.00
0.00
0.00
80.00
0.00
566.50
0.00
0.00
0.00
82.50
0.00
566.50
0.00
0.00
0.00
85.00
0.00
566.50
0.00
0.00
0.00
87.50
0.00
566.50
0.00
0.00
0.00
90.00
0.00
566.50
0.00
0.00
0.00
92.50
0.00
566.50
0.00
0.00
0.00
95.00
0.00
566.50
0.00
0.00
0.00
97.50
0.00
566.50
0.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 29
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 30
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 31
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 0.08" for 1-inch event
Inflow =
1.08 cfs @
3.23 hrs, Volume=
0.067 of
Outflow =
0.06 cfs @
6.07 hrs, Volume=
0.067 af, Atten= 94%, Lag= 170.3 min
Primary =
0.06 cfs @
6.07 hrs, Volume=
0.067 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind
method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 558.74'
@ 6.07 hrs
Surf.Area= 10,474 sf
Storage= 2,449 cf
Plug -Flow detention time= 844.2 min calculated for 0.067 of (99% of inflow)
Center -of -Mass det. time= 843.2 min ( 1,086.3 - 243.1 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.06 cfs @ 6.07 hrs HW=558.74' (Free Discharge)
L1=RCP_Round 36" (Passes 0.06 cfs of 68.66 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.06 cfs @ 1.79 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 32
Pond 6P: BMP #2
Hydrograph
1.08 cfs ■ Inflow
El Ouff low
-
--------- --- -- -- -- -- ---It�lflbw��4�-ecI-�.-6 V at, - ■ Primary
� � � � � � ■ Secondary
P!eclk EIev=5$8.14';'
1 StbragO=2,449 cf
N I I I I I I I I I I I I I I I I I I
U I I I I I I I I I I I I I I I I I I I
3 I I I I I I I I I I I I I I I I I I I
o I I I I I I I I I I I I I I I I I I
LL
0.06 cfs
0.00 cfs
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 33
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 34
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.16
2,187
558.72
0.05
0.05
0.00
7.50
0.00
2,162
558.71
0.05
0.05
0.00
10.00
0.00
1,725
558.67
0.04
0.04
0.00
12.50
0.00
1,399
558.64
0.03
0.03
0.00
15.00
0.00
1,157
558.62
0.02
0.02
0.00
17.50
0.00
973
558.60
0.02
0.02
0.00
20.00
0.00
832
558.58
0.01
0.01
0.00
22.50
0.00
725
558.57
0.01
0.01
0.00
25.00
0.00
643
558.57
0.01
0.01
0.00
27.50
0.00
575
558.56
0.01
0.01
0.00
30.00
0.00
515
558.55
0.01
0.01
0.00
32.50
0.00
461
558.55
0.01
0.01
0.00
35.00
0.00
413
558.54
0.01
0.01
0.00
37.50
0.00
369
558.54
0.00
0.00
0.00
40.00
0.00
331
558.53
0.00
0.00
0.00
42.50
0.00
296
558.53
0.00
0.00
0.00
45.00
0.00
265
558.53
0.00
0.00
0.00
47.50
0.00
237
558.52
0.00
0.00
0.00
50.00
0.00
212
558.52
0.00
0.00
0.00
52.50
0.00
190
558.52
0.00
0.00
0.00
55.00
0.00
170
558.52
0.00
0.00
0.00
57.50
0.00
152
558.52
0.00
0.00
0.00
60.00
0.00
136
558.51
0.00
0.00
0.00
62.50
0.00
122
558.51
0.00
0.00
0.00
65.00
0.00
109
558.51
0.00
0.00
0.00
67.50
0.00
98
558.51
0.00
0.00
0.00
70.00
0.00
88
558.51
0.00
0.00
0.00
72.50
0.00
78
558.51
0.00
0.00
0.00
75.00
0.00
70
558.51
0.00
0.00
0.00
77.50
0.00
63
558.51
0.00
0.00
0.00
80.00
0.00
56
558.51
0.00
0.00
0.00
82.50
0.00
50
558.51
0.00
0.00
0.00
85.00
0.00
45
558.50
0.00
0.00
0.00
87.50
0.00
40
558.50
0.00
0.00
0.00
90.00
0.00
36
558.50
0.00
0.00
0.00
92.50
0.00
32
558.50
0.00
0.00
0.00
95.00
0.00
29
558.50
0.00
0.00
0.00
97.50
0.00
26
558.50
0.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 35
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 36
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 37
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 0.07" for 1-inch event
Inflow =
0.58 cfs @
3.25 hrs, Volume=
0.040 of
Outflow =
0.02 cfs @
6.10 hrs, Volume=
0.039 af, Atten= 96%, Lag= 170.6 min
Primary =
0.02 cfs @
6.10 hrs, Volume=
0.039 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind
method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 568.67'
@ 6.10 hrs
Surf.Area= 9,505 sf
Storage= 1,579 cf
Plug -Flow detention time= 1,193.0 min calculated for 0.039 of (98% of inflow)
Center -of -Mass det. time= 1,192.6 min ( 1,438.8 - 246.3 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.02 cfs @ 6.10 hrs HW=568.67' (Free Discharge)
L1=RCP_Round 24" (Passes 0.02 cfs of 23.25 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.02 cfs @ 1.52 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 38
Pond 7P: BMP #3
Hydrograph
--r--r--r--r--r--r--t r--r--r--r--r--r--r--r--r--r--r--r--
_______________________________________________________ ■Inflow
0.58 cfs ❑ outflow
--i --I --i --i --i --i --i --i--i_1IIIIVV 11i1eQ�V..7V�t Primary
0.65 ■ Secondary
o.sElev
0.55 --Ili --Ili --Ili --Ili --Ili --Ili --Ili --Ili --Ili --i -_+- t� -
+--+--+--+--+--+--+--+--+--+--+--+So_r,age_15670-Cf
0.5
0.45 -
L--L--L--L--L--L--L--L--L--L--L--i--i--i--L--L--L--L--L-
0.4
w ��--��--��--r--r--r--r--r--r--r--r--r--r--r--r--r--r--r--r--
0.35
LL Z
-
0.25
0.2
Jl
0.02 cfs
cfs
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 39
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 40
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.10
1,352
568.65
0.02
0.02
0.00
7.50
0.00
1,468
568.66
0.02
0.02
0.00
10.00
0.00
1,280
568.64
0.02
0.02
0.00
12.50
0.00
1,115
568.62
0.02
0.02
0.00
15.00
0.00
977
568.61
0.01
0.01
0.00
17.50
0.00
862
568.59
0.01
0.01
0.00
20.00
0.00
767
568.58
0.01
0.01
0.00
22.50
0.00
687
568.57
0.01
0.01
0.00
25.00
0.00
622
568.57
0.01
0.01
0.00
27.50
0.00
566
568.56
0.01
0.01
0.00
30.00
0.00
516
568.56
0.01
0.01
0.00
32.50
0.00
470
568.55
0.00
0.00
0.00
35.00
0.00
429
568.55
0.00
0.00
0.00
37.50
0.00
391
568.54
0.00
0.00
0.00
40.00
0.00
356
568.54
0.00
0.00
0.00
42.50
0.00
325
568.54
0.00
0.00
0.00
45.00
0.00
296
568.53
0.00
0.00
0.00
47.50
0.00
270
568.53
0.00
0.00
0.00
50.00
0.00
246
568.53
0.00
0.00
0.00
52.50
0.00
224
568.52
0.00
0.00
0.00
55.00
0.00
205
568.52
0.00
0.00
0.00
57.50
0.00
186
568.52
0.00
0.00
0.00
60.00
0.00
170
568.52
0.00
0.00
0.00
62.50
0.00
155
568.52
0.00
0.00
0.00
65.00
0.00
141
568.52
0.00
0.00
0.00
67.50
0.00
129
568.51
0.00
0.00
0.00
70.00
0.00
117
568.51
0.00
0.00
0.00
72.50
0.00
107
568.51
0.00
0.00
0.00
75.00
0.00
98
568.51
0.00
0.00
0.00
77.50
0.00
89
568.51
0.00
0.00
0.00
80.00
0.00
81
568.51
0.00
0.00
0.00
82.50
0.00
74
568.51
0.00
0.00
0.00
85.00
0.00
67
568.51
0.00
0.00
0.00
87.50
0.00
61
568.51
0.00
0.00
0.00
90.00
0.00
56
568.51
0.00
0.00
0.00
92.50
0.00
51
568.51
0.00
0.00
0.00
95.00
0.00
47
568.51
0.00
0.00
0.00
97.50
0.00
42
568.50
0.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 41
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 42
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 43
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 0.06" for 1-inch event
Inflow = 0.02 cfs @ 6.10 hrs, Volume= 0.039 of
Primary = 0.02 cfs @ 6.10 hrs, Volume= 0.039 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
■ Inflow
0.026
�
--1--J---1---L--1--J---1---L--1---------L--1------'--
� �
�
� � � �
� � � �
❑Primary
0.024
0.02 cfs
---------T------
1
-----------
- --
- #� 1 i4'r�=O-.N1 ' aG
0.022
-----r--7--�
---r--rt--�
---r--rt--------r--rt---I---r
0.02
---r
0.018
0.016
y
�-
----i--��---'�
I I
I
--L----��---'�
I I I I
--L----��---'�--L--------'� -
I I I I I I I I I
0.014
--
-- --
------
-----------
----------- ----------
3
2 0.012
LL
T--y
--T--y---I---r--rt---I---r--r--rt---I---r--r--rt-
-- I---r-
0.01
T--7--
-T-
-T-
-- ---T-----------T--
---------T-----I---T -
0.008
T-- - - - -I-
T-- -I---T T---I---T -
0.006
I I I
I I I
I I I I I I I I I -
0.004
1--J---1---L--T--
-L--1--J---1---L--1------'--
0.002
0
0
5 10 15 20
25 30
35
40 45 50 55
60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 44
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.01
0.00
0.01
5.00
0.02
0.00
0.02
6.00
0.02
0.00
0.02
7.00
0.02
0.00
0.02
8.00
0.02
0.00
0.02
9.00
0.02
0.00
0.02
10.00
0.02
0.00
0.02
11.00
0.02
0.00
0.02
12.00
0.02
0.00
0.02
13.00
0.02
0.00
0.02
14.00
0.02
0.00
0.02
15.00
0.01
0.00
0.01
16.00
0.01
0.00
0.01
17.00
0.01
0.00
0.01
18.00
0.01
0.00
0.01
19.00
0.01
0.00
0.01
20.00
0.01
0.00
0.01
21.00
0.01
0.00
0.01
22.00
0.01
0.00
0.01
23.00
0.01
0.00
0.01
24.00
0.01
0.00
0.01
25.00
0.01
0.00
0.01
26.00
0.01
0.00
0.01
27.00
0.01
0.00
0.01
28.00
0.01
0.00
0.01
29.00
0.01
0.00
0.01
30.00
0.01
0.00
0.01
31.00
0.01
0.00
0.01
32.00
0.00
0.00
0.00
33.00
0.00
0.00
0.00
34.00
0.00
0.00
0.00
35.00
0.00
0.00
0.00
36.00
0.00
0.00
0.00
37.00
0.00
0.00
0.00
38.00
0.00
0.00
0.00
39.00
0.00
0.00
0.00
40.00
0.00
0.00
0.00
41.00
0.00
0.00
0.00
42.00
0.00
0.00
0.00
43.00
0.00
0.00
0.00
44.00
0.00
0.00
0.00
45.00
0.00
0.00
0.00
46.00
0.00
0.00
0.00
47.00
0.00
0.00
0.00
48.00
0.00
0.00
0.00
49.00
0.00
0.00
0.00
50.00
0.00
0.00
0.00
51.00
0.00
0.00
0.00
52.00
0.00
0.00
0.00
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.00
0.00
0.00
54.00
0.00
0.00
0.00
55.00
0.00
0.00
0.00
56.00
0.00
0.00
0.00
57.00
0.00
0.00
0.00
58.00
0.00
0.00
0.00
59.00
0.00
0.00
0.00
60.00
0.00
0.00
0.00
61.00
0.00
0.00
0.00
62.00
0.00
0.00
0.00
63.00
0.00
0.00
0.00
64.00
0.00
0.00
0.00
65.00
0.00
0.00
0.00
66.00
0.00
0.00
0.00
67.00
0.00
0.00
0.00
68.00
0.00
0.00
0.00
69.00
0.00
0.00
0.00
70.00
0.00
0.00
0.00
71.00
0.00
0.00
0.00
72.00
0.00
0.00
0.00
73.00
0.00
0.00
0.00
74.00
0.00
0.00
0.00
75.00
0.00
0.00
0.00
76.00
0.00
0.00
0.00
77.00
0.00
0.00
0.00
78.00
0.00
0.00
0.00
79.00
0.00
0.00
0.00
80.00
0.00
0.00
0.00
81.00
0.00
0.00
0.00
82.00
0.00
0.00
0.00
83.00
0.00
0.00
0.00
84.00
0.00
0.00
0.00
85.00
0.00
0.00
0.00
86.00
0.00
0.00
0.00
87.00
0.00
0.00
0.00
88.00
0.00
0.00
0.00
89.00
0.00
0.00
0.00
90.00
0.00
0.00
0.00
91.00
0.00
0.00
0.00
92.00
0.00
0.00
0.00
93.00
0.00
0.00
0.00
94.00
0.00
0.00
0.00
95.00
0.00
0.00
0.00
96.00
0.00
0.00
0.00
97.00
0.00
0.00
0.00
98.00
0.00
0.00
0.00
99.00
0.00
0.00
0.00

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 45
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61% Impervious, Inflow Depth > 0.03" for 1-inch event
Inflow = 0.06 cfs @ 6.07 hrs, Volume= 0.067 of
Primary = 0.06 cfs @ 6.07 hrs, Volume= 0.067 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
,I ---I------I---
I� ---II
---IIII---II---
I� ---II---II---I�
-- I� ---II---II---I� -- I� ---II---II---I� -
■Inflow
❑ Primary
0.065 0.06 CfS--- -----+--------L--1---1---1---L--1---1---1---L--1---1---I--
-Y---r--r--Y--r---r--r-
Y- -
0.06
I I
0.055 ----I---;
I
I
------I---;
I
I I I I
------I---;
I I I I I I I I I
------I---;---I---; -
0.05 --1---L--1--J---1---L--1---------L--1---------L--1------I--
I
I
I
I
I I I I
I I I I I I I I I
0.045 --I---+--+--+---+--+--+--+---+--+--+--+---+--+--+------+-
0.04 -----r--+--y------r--rt------r--r--rt------r--r--rt------r-
y I
I
I
I
I I I I
I I I I I I I I I
0.035-------------r-----i--r
3
I
I
I
I I I I
I I I I I I I I I
°
FL0.03--------I
-------------I
-------------I
-------------I------I--
0.025 +
L--+--
---L--1---1---I-
L 1 L 1
0.02 Y r
r--Y
r---I
r--Y---I
--r--Y---------r- -Y - - - I
i
0.015 + 1-
I
I I
I I I I I
'--1---I-
0.01 i I I
--L--1--J------L--1-------L--1------I--
I
I I I I I I I I I
0.005
0
0 5 10 15 20
25
30
35
40 45 50 55
60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Charlotte 6-hr 1-inch Rainfall=1.00"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 46
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.04
0.00
0.04
5.00
0.05
0.00
0.05
6.00
0.06
0.00
0.06
7.00
0.06
0.00
0.06
8.00
0.05
0.00
0.05
9.00
0.05
0.00
0.05
10.00
0.04
0.00
0.04
11.00
0.04
0.00
0.04
12.00
0.03
0.00
0.03
13.00
0.03
0.00
0.03
14.00
0.03
0.00
0.03
15.00
0.02
0.00
0.02
16.00
0.02
0.00
0.02
17.00
0.02
0.00
0.02
18.00
0.02
0.00
0.02
19.00
0.02
0.00
0.02
20.00
0.01
0.00
0.01
21.00
0.01
0.00
0.01
22.00
0.01
0.00
0.01
23.00
0.01
0.00
0.01
24.00
0.01
0.00
0.01
25.00
0.01
0.00
0.01
26.00
0.01
0.00
0.01
27.00
0.01
0.00
0.01
28.00
0.01
0.00
0.01
29.00
0.01
0.00
0.01
30.00
0.01
0.00
0.01
31.00
0.01
0.00
0.01
32.00
0.01
0.00
0.01
33.00
0.01
0.00
0.01
34.00
0.01
0.00
0.01
35.00
0.01
0.00
0.01
36.00
0.00
0.00
0.00
37.00
0.00
0.00
0.00
38.00
0.00
0.00
0.00
39.00
0.00
0.00
0.00
40.00
0.00
0.00
0.00
41.00
0.00
0.00
0.00
42.00
0.00
0.00
0.00
43.00
0.00
0.00
0.00
44.00
0.00
0.00
0.00
45.00
0.00
0.00
0.00
46.00
0.00
0.00
0.00
47.00
0.00
0.00
0.00
48.00
0.00
0.00
0.00
49.00
0.00
0.00
0.00
50.00
0.00
0.00
0.00
51.00
0.00
0.00
0.00
52.00
0.00
0.00
0.00
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.00
0.00
0.00
54.00
0.00
0.00
0.00
55.00
0.00
0.00
0.00
56.00
0.00
0.00
0.00
57.00
0.00
0.00
0.00
58.00
0.00
0.00
0.00
59.00
0.00
0.00
0.00
60.00
0.00
0.00
0.00
61.00
0.00
0.00
0.00
62.00
0.00
0.00
0.00
63.00
0.00
0.00
0.00
64.00
0.00
0.00
0.00
65.00
0.00
0.00
0.00
66.00
0.00
0.00
0.00
67.00
0.00
0.00
0.00
68.00
0.00
0.00
0.00
69.00
0.00
0.00
0.00
70.00
0.00
0.00
0.00
71.00
0.00
0.00
0.00
72.00
0.00
0.00
0.00
73.00
0.00
0.00
0.00
74.00
0.00
0.00
0.00
75.00
0.00
0.00
0.00
76.00
0.00
0.00
0.00
77.00
0.00
0.00
0.00
78.00
0.00
0.00
0.00
79.00
0.00
0.00
0.00
80.00
0.00
0.00
0.00
81.00
0.00
0.00
0.00
82.00
0.00
0.00
0.00
83.00
0.00
0.00
0.00
84.00
0.00
0.00
0.00
85.00
0.00
0.00
0.00
86.00
0.00
0.00
0.00
87.00
0.00
0.00
0.00
88.00
0.00
0.00
0.00
89.00
0.00
0.00
0.00
90.00
0.00
0.00
0.00
91.00
0.00
0.00
0.00
92.00
0.00
0.00
0.00
93.00
0.00
0.00
0.00
94.00
0.00
0.00
0.00
95.00
0.00
0.00
0.00
96.00
0.00
0.00
0.00
97.00
0.00
0.00
0.00
98.00
0.00
0.00
0.00
99.00
0.00
0.00
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 47
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=0.19"
Tc=21.7 min CN=57 Runoff=1.93 cfs 0.488 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=0.15"
Tc=24.9 min CN=55 Runoff=0.18 cfs 0.069 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=0.36"
Tc=5.0 min CN=63 Runoff=6.34 cfs 0.385 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=1.11"
Tc=5.0 min CN=80 Runoff=19.31 cfs 0.894 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=1.05"
Tc=5.0 min CN=79 Runoff=13.03 cfs 0.605 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=0.42"
Tc=16.9 min CN=65 Runoff=2.02 cfs 0.196 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=0.22"
Tc=24.9 min CN=58 Runoff=0.09 cfs 0.021 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=0.15"
Tc=20.7 min CN=55 Runoff=0.30 cfs 0.111 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=0.15"
Tc=20.7 min CN=55 Runoff=0.29 cfs 0.110 of
Pond 5P: BMP #1 Peak Elev=567.42' Storage=14,131 cf Inflow=6.34 cfs 0.385 of
Primary=0.07 cfs 0.341 of Secondary=0.00 cfs 0.000 of Outflow=0.07 cfs 0.341 of
Pond 6P: BMP #2 Peak EIev=560.80' Storage=28,646 cf Inflow=19.31 cfs 0.894 of
Primary=0.24 cfs 0.884 of Secondary=0.00 cfs 0.000 of Outflow=0.24 cfs 0.884 of
Pond 7P: BMP #3 Peak EIev=570.51' Storage=21,948 cf Inflow=13.03 cfs 0.605 of
Primary=0.11 cfs 0.544 of Secondary=0.00 cfs 0.000 of Outflow=0.11 cfs 0.544 of
Link 17L: Post Development#2 Inflow=0.17 cfs 0.565 of
Primary=0.17 cfs 0.565 of
Link 18L: Post Development#1
Inflow=2.25 cfs 1.421 of
Primary=2.25 cfs 1.421 of
Total Runoff Area = 90.560 ac Runoff Volume = 2.879 of Average Runoff Depth = 0.38"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 48
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 1.93 cfs @ 12.28 hrs, Volume= 0.488 af, Depth= 0.19"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
1.93 --'--- �',---'---'----'---- � � � � � � � � �I ---'-- ■Runoff
2 cfs
Type I'',I 2'4-h'',r
1yr•-24hr Rainfall=2!81
Renoff Area=80.590 at.
Runoff VQIu'',m�=0r48'',8 �f
N I I I I I I I I I I I � I_ I �
------
Runoff -Depth, 0.191'-
1TcT21.7 wnih
RCN',=57
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 49
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.02
0.14
13.00
2.17
0.05
0.98
14.00
2.30
0.08
0.66
15.00
2.40
0.09
0.54
16.00
2.47
0.11
0.46
17.00
2.53
0.12
0.41
18.00
2.59
0.14
0.38
19.00
2.64
0.15
0.34
20.00
2.68
0.16
0.30
21.00
2.71
0.17
0.28
22.00
2.75
0.17
0.27
23.00
2.78
0.18
0.27
24.00
2.81
0.19
0.26
25.00
2.81
0.19
0.00
26.00
2.81
0.19
0.00
27.00
2.81
0.19
0.00
28.00
2.81
0.19
0.00
29.00
2.81
0.19
0.00
30.00
2.81
0.19
0.00
31.00
2.81
0.19
0.00
32.00
2.81
0.19
0.00
33.00
2.81
0.19
0.00
34.00
2.81
0.19
0.00
35.00
2.81
0.19
0.00
36.00
2.81
0.19
0.00
37.00
2.81
0.19
0.00
38.00
2.81
0.19
0.00
39.00
2.81
0.19
0.00
40.00
2.81
0.19
0.00
41.00
2.81
0.19
0.00
42.00
2.81
0.19
0.00
43.00
2.81
0.19
0.00
44.00
2.81
0.19
0.00
45.00
2.81
0.19
0.00
46.00
2.81
0.19
0.00
47.00
2.81
0.19
0.00
48.00
2.81
0.19
0.00
49.00
2.81
0.19
0.00
50.00
2.81
0.19
0.00
51.00
2.81
0.19
0.00
52.00
2.81
0.19
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.19
0.00
54.00
2.81
0.19
0.00
55.00
2.81
0.19
0.00
56.00
2.81
0.19
0.00
57.00
2.81
0.19
0.00
58.00
2.81
0.19
0.00
59.00
2.81
0.19
0.00
60.00
2.81
0.19
0.00
61.00
2.81
0.19
0.00
62.00
2.81
0.19
0.00
63.00
2.81
0.19
0.00
64.00
2.81
0.19
0.00
65.00
2.81
0.19
0.00
66.00
2.81
0.19
0.00
67.00
2.81
0.19
0.00
68.00
2.81
0.19
0.00
69.00
2.81
0.19
0.00
70.00
2.81
0.19
0.00
71.00
2.81
0.19
0.00
72.00
2.81
0.19
0.00
73.00
2.81
0.19
0.00
74.00
2.81
0.19
0.00
75.00
2.81
0.19
0.00
76.00
2.81
0.19
0.00
77.00
2.81
0.19
0.00
78.00
2.81
0.19
0.00
79.00
2.81
0.19
0.00
80.00
2.81
0.19
0.00
81.00
2.81
0.19
0.00
82.00
2.81
0.19
0.00
83.00
2.81
0.19
0.00
84.00
2.81
0.19
0.00
85.00
2.81
0.19
0.00
86.00
2.81
0.19
0.00
87.00
2.81
0.19
0.00
88.00
2.81
0.19
0.00
89.00
2.81
0.19
0.00
90.00
2.81
0.19
0.00
91.00
2.81
0.19
0.00
92.00
2.81
0.19
0.00
93.00
2.81
0.19
0.00
94.00
2.81
0.19
0.00
95.00
2.81
0.19
0.00
96.00
2.81
0.19
0.00
97.00
2.81
0.19
0.00
98.00
2.81
0.19
0.00
99.00
2.81
0.19
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 50
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 0.18 cfs @ 12.48 hrs, Volume= 0.069 af, Depth= 0.15"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
0.18
- 1- '--- 1---'--- L -- 1---'--- 1---'--- L---'---L --
--'--- 1--- '--- L--- '---L -- 1---0.19
0.18 cfs
■Runoff
0.17
-- --- ----1--- L--- 1--- L__1--- 1--- 1---'--- L--1--- '--- -- ' L--
- _ty pe lh -24 -h,-
--1----1---'---L------L--1------1------L--1---'- - - L---'---L
0.16
0.15
I I I I I I I I I I I I I I I I I I
-- ----+---'------'-----+---'---+---'1yr-24hr- Rai nfaHt=2-:91��--
--+--- +----
-++I ------'I ------++I ------'I ------++I ----++I ------'I
0.14
--+I -- ------++I --------R--b+-nf-+o-f-f-A-d-e&&M at -
--- +---�u�e=00j69_af0.12 u VQ,'
w 0.11
0.1
- -T -- T------T------T--T------T------T — I
Runoff -DePth= 0.1 vI
3
0 0.09
LL
--+--+---I---r---I---r--+---I---+---I---r--+---I- +---i---wr---i---yr�--
- -T --------T------r--T------t------T--T---T TET24.-94nEh--
0.08
0.07
--r-- --� r--� r-- r------r------r--,---r--r---I--- N--- -
- -T------ r--------- T--- I - - - T---I --- -- -----T------q`�'I=_5$--
0.06
--r-- - ---r---I---r--r---I---r---I---r--r---r--r---I---r---I---r--
0.05
0.04
--T-- -T- r------r--T------T------r- -I- - -I --T---I---r------r--
-- T---I- r---I-----T------ T- - -I--- --I - - -r--T------ r- - - I--- --
0.03
0.02
--'-- -'
- _ T - - - T - - -I- r r - - T T r - _ T T I r r - -
0.01
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 51
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.01
0.00
13.00
2.17
0.03
0.14
14.00
2.30
0.05
0.10
15.00
2.40
0.06
0.08
16.00
2.47
0.08
0.07
17.00
2.53
0.09
0.06
18.00
2.59
0.10
0.06
19.00
2.64
0.11
0.05
20.00
2.68
0.12
0.05
21.00
2.71
0.12
0.04
22.00
2.75
0.13
0.04
23.00
2.78
0.14
0.04
24.00
2.81
0.15
0.04
25.00
2.81
0.15
0.00
26.00
2.81
0.15
0.00
27.00
2.81
0.15
0.00
28.00
2.81
0.15
0.00
29.00
2.81
0.15
0.00
30.00
2.81
0.15
0.00
31.00
2.81
0.15
0.00
32.00
2.81
0.15
0.00
33.00
2.81
0.15
0.00
34.00
2.81
0.15
0.00
35.00
2.81
0.15
0.00
36.00
2.81
0.15
0.00
37.00
2.81
0.15
0.00
38.00
2.81
0.15
0.00
39.00
2.81
0.15
0.00
40.00
2.81
0.15
0.00
41.00
2.81
0.15
0.00
42.00
2.81
0.15
0.00
43.00
2.81
0.15
0.00
44.00
2.81
0.15
0.00
45.00
2.81
0.15
0.00
46.00
2.81
0.15
0.00
47.00
2.81
0.15
0.00
48.00
2.81
0.15
0.00
49.00
2.81
0.15
0.00
50.00
2.81
0.15
0.00
51.00
2.81
0.15
0.00
52.00
2.81
0.15
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.15
0.00
54.00
2.81
0.15
0.00
55.00
2.81
0.15
0.00
56.00
2.81
0.15
0.00
57.00
2.81
0.15
0.00
58.00
2.81
0.15
0.00
59.00
2.81
0.15
0.00
60.00
2.81
0.15
0.00
61.00
2.81
0.15
0.00
62.00
2.81
0.15
0.00
63.00
2.81
0.15
0.00
64.00
2.81
0.15
0.00
65.00
2.81
0.15
0.00
66.00
2.81
0.15
0.00
67.00
2.81
0.15
0.00
68.00
2.81
0.15
0.00
69.00
2.81
0.15
0.00
70.00
2.81
0.15
0.00
71.00
2.81
0.15
0.00
72.00
2.81
0.15
0.00
73.00
2.81
0.15
0.00
74.00
2.81
0.15
0.00
75.00
2.81
0.15
0.00
76.00
2.81
0.15
0.00
77.00
2.81
0.15
0.00
78.00
2.81
0.15
0.00
79.00
2.81
0.15
0.00
80.00
2.81
0.15
0.00
81.00
2.81
0.15
0.00
82.00
2.81
0.15
0.00
83.00
2.81
0.15
0.00
84.00
2.81
0.15
0.00
85.00
2.81
0.15
0.00
86.00
2.81
0.15
0.00
87.00
2.81
0.15
0.00
88.00
2.81
0.15
0.00
89.00
2.81
0.15
0.00
90.00
2.81
0.15
0.00
91.00
2.81
0.15
0.00
92.00
2.81
0.15
0.00
93.00
2.81
0.15
0.00
94.00
2.81
0.15
0.00
95.00
2.81
0.15
0.00
96.00
2.81
0.15
0.00
97.00
2.81
0.15
0.00
98.00
2.81
0.15
0.00
99.00
2.81
0.15
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 52
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.34 cfs @ 11.99 hrs, Volume= 0.385 af, Depth= 0.36"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
7 I I I I I I I I I I I I I I I I I I I I ■Runoff
6.34 cfs
---'I---------T------r---'I--- -- Type II 34 fhI'r-
6
11yr-2,4hr Rainfall)=2!81"
---L-- - L - - -1- - - t - - - - - - L - - - - - - L - - - - - - L - - J - - - - - - J - - -I- - --I--- 1 - - -I- -
5 ' Renoff Area=12.980 at.
- - - - - - - - runoff glu''Imq=0,385 -af -
4 Runoff Depth'I, 0!361'
-J--- L------L------L---
3 ---L---'I-----L---'I--- ----
LL Te-6.0 Min
1
IICN'1,=6$
2
1 I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 53
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.07
6.27
13.00
2.17
0.14
0.64
14.00
2.30
0.18
0.42
15.00
2.40
0.21
0.35
16.00
2.47
0.24
0.28
17.00
2.53
0.26
0.26
18.00
2.59
0.27
0.23
19.00
2.64
0.29
0.21
20.00
2.68
0.31
0.18
21.00
2.71
0.32
0.17
22.00
2.75
0.33
0.17
23.00
2.78
0.34
0.16
24.00
2.81
0.36
0.16
25.00
2.81
0.36
0.00
26.00
2.81
0.36
0.00
27.00
2.81
0.36
0.00
28.00
2.81
0.36
0.00
29.00
2.81
0.36
0.00
30.00
2.81
0.36
0.00
31.00
2.81
0.36
0.00
32.00
2.81
0.36
0.00
33.00
2.81
0.36
0.00
34.00
2.81
0.36
0.00
35.00
2.81
0.36
0.00
36.00
2.81
0.36
0.00
37.00
2.81
0.36
0.00
38.00
2.81
0.36
0.00
39.00
2.81
0.36
0.00
40.00
2.81
0.36
0.00
41.00
2.81
0.36
0.00
42.00
2.81
0.36
0.00
43.00
2.81
0.36
0.00
44.00
2.81
0.36
0.00
45.00
2.81
0.36
0.00
46.00
2.81
0.36
0.00
47.00
2.81
0.36
0.00
48.00
2.81
0.36
0.00
49.00
2.81
0.36
0.00
50.00
2.81
0.36
0.00
51.00
2.81
0.36
0.00
52.00
2.81
0.36
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.36
0.00
54.00
2.81
0.36
0.00
55.00
2.81
0.36
0.00
56.00
2.81
0.36
0.00
57.00
2.81
0.36
0.00
58.00
2.81
0.36
0.00
59.00
2.81
0.36
0.00
60.00
2.81
0.36
0.00
61.00
2.81
0.36
0.00
62.00
2.81
0.36
0.00
63.00
2.81
0.36
0.00
64.00
2.81
0.36
0.00
65.00
2.81
0.36
0.00
66.00
2.81
0.36
0.00
67.00
2.81
0.36
0.00
68.00
2.81
0.36
0.00
69.00
2.81
0.36
0.00
70.00
2.81
0.36
0.00
71.00
2.81
0.36
0.00
72.00
2.81
0.36
0.00
73.00
2.81
0.36
0.00
74.00
2.81
0.36
0.00
75.00
2.81
0.36
0.00
76.00
2.81
0.36
0.00
77.00
2.81
0.36
0.00
78.00
2.81
0.36
0.00
79.00
2.81
0.36
0.00
80.00
2.81
0.36
0.00
81.00
2.81
0.36
0.00
82.00
2.81
0.36
0.00
83.00
2.81
0.36
0.00
84.00
2.81
0.36
0.00
85.00
2.81
0.36
0.00
86.00
2.81
0.36
0.00
87.00
2.81
0.36
0.00
88.00
2.81
0.36
0.00
89.00
2.81
0.36
0.00
90.00
2.81
0.36
0.00
91.00
2.81
0.36
0.00
92.00
2.81
0.36
0.00
93.00
2.81
0.36
0.00
94.00
2.81
0.36
0.00
95.00
2.81
0.36
0.00
96.00
2.81
0.36
0.00
97.00
2.81
0.36
0.00
98.00
2.81
0.36
0.00
99.00
2.81
0.36
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 54
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 19.31 cfs @ 11.96 hrs, Volume= 0.894 af, Depth= 1.11"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
21 i i i i i Runoff
19.31 cfs----------------T------------------------------�-
-
zo � - -
19 --L-- ----'------1---1------+------+------L------Type 0-24-h;r--
18 --+---+------+------+---+--+------+---+--+--+---+---I---'-1---+--
17 - -- - ---' ----' ---- t--- lyr-24ht Rainfall=2,$17 -
16---li-- - ---li-----li--- ---li -----li----------
14
13 --+-- - ------ ------------+------%Cu1O _V_Qlpme=oi l -4
w 12 ----- - ---r--------rt------+------+-- - f
- Runt f Deepth=1;fi11
00 ------------------------ ---------------------1��-f�--
a9 - - - - - - - - - - -
8 --+---+---'---+---'---+---'---+---'---+------+------+------CN' 8 -
7 -------�-------�r--T---�---7---�---r------r-----r------r--
6 ---i-- - ---i -----i--- ---i -----i------i------i------i------i--- --
5 -----k
------4 --J--L---1---L---1---1---1---1---'1---L---L---L---L--
3+---+--2---Ir-----i---7 rt---Ir--7---Ir--r---li---r---li---r------r--
q
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 55
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.01
0.20
12.00
1.86
0.48
17.29
13.00
2.17
0.67
1.14
14.00
2.30
0.76
0.70
15.00
2.40
0.82
0.57
16.00
2.47
0.87
0.44
17.00
2.53
0.91
0.39
18.00
2.59
0.95
0.35
19.00
2.64
0.98
0.30
20.00
2.68
1.01
0.26
21.00
2.71
1.04
0.25
22.00
2.75
1.06
0.24
23.00
2.78
1.09
0.23
24.00
2.81
1.11
0.22
25.00
2.81
1.11
0.00
26.00
2.81
1.11
0.00
27.00
2.81
1.11
0.00
28.00
2.81
1.11
0.00
29.00
2.81
1.11
0.00
30.00
2.81
1.11
0.00
31.00
2.81
1.11
0.00
32.00
2.81
1.11
0.00
33.00
2.81
1.11
0.00
34.00
2.81
1.11
0.00
35.00
2.81
1.11
0.00
36.00
2.81
1.11
0.00
37.00
2.81
1.11
0.00
38.00
2.81
1.11
0.00
39.00
2.81
1.11
0.00
40.00
2.81
1.11
0.00
41.00
2.81
1.11
0.00
42.00
2.81
1.11
0.00
43.00
2.81
1.11
0.00
44.00
2.81
1.11
0.00
45.00
2.81
1.11
0.00
46.00
2.81
1.11
0.00
47.00
2.81
1.11
0.00
48.00
2.81
1.11
0.00
49.00
2.81
1.11
0.00
50.00
2.81
1.11
0.00
51.00
2.81
1.11
0.00
52.00
2.81
1.11
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
1.11
0.00
54.00
2.81
1.11
0.00
55.00
2.81
1.11
0.00
56.00
2.81
1.11
0.00
57.00
2.81
1.11
0.00
58.00
2.81
1.11
0.00
59.00
2.81
1.11
0.00
60.00
2.81
1.11
0.00
61.00
2.81
1.11
0.00
62.00
2.81
1.11
0.00
63.00
2.81
1.11
0.00
64.00
2.81
1.11
0.00
65.00
2.81
1.11
0.00
66.00
2.81
1.11
0.00
67.00
2.81
1.11
0.00
68.00
2.81
1.11
0.00
69.00
2.81
1.11
0.00
70.00
2.81
1.11
0.00
71.00
2.81
1.11
0.00
72.00
2.81
1.11
0.00
73.00
2.81
1.11
0.00
74.00
2.81
1.11
0.00
75.00
2.81
1.11
0.00
76.00
2.81
1.11
0.00
77.00
2.81
1.11
0.00
78.00
2.81
1.11
0.00
79.00
2.81
1.11
0.00
80.00
2.81
1.11
0.00
81.00
2.81
1.11
0.00
82.00
2.81
1.11
0.00
83.00
2.81
1.11
0.00
84.00
2.81
1.11
0.00
85.00
2.81
1.11
0.00
86.00
2.81
1.11
0.00
87.00
2.81
1.11
0.00
88.00
2.81
1.11
0.00
89.00
2.81
1.11
0.00
90.00
2.81
1.11
0.00
91.00
2.81
1.11
0.00
92.00
2.81
1.11
0.00
93.00
2.81
1.11
0.00
94.00
2.81
1.11
0.00
95.00
2.81
1.11
0.00
96.00
2.81
1.11
0.00
97.00
2.81
1.11
0.00
98.00
2.81
1.11
0.00
99.00
2.81
1.11
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 56
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 13.03 cfs @ 11.96 hrs, Volume= 0.605 af, Depth= 1.05"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
14 Runoff
I I 1
13.03 cfs--------- ------- ---+------+---------- ---+---1---r---I�--{-ter--
13 -- -- - --- --------7----- T------T------r-----p- TY�-O I
-�' CH -
12 -- iyrmUhir-Rainfal[=Z.81I'
11 I I I I I I I I I I I I I I I I I 1
- -- - -- -- --- -- -- --- -Rurtoff-Aee&6.900at--
10
-_r-- _r 1 r 1 r 1 T I I 1 r 1 r 1 r�f
--
9 unof VQIU1MQ=01.6015
-- I I I I I I I I I I I I I I I I I I
8
--I Rtunaf# be-pw=11b51'--
�-° 7 ---i--li---r l------li---i l------li------r------r-IL��7ffl
6 I
--L---L---1___L---1----L ----1---'--- L--- ---L--- ---L------CN=70--
5 1
- - - - - + - - - I- - - + - - - - - - + - - - I- - - + - - - - - - + - - - - - - + - - - - - - + - - -I - - - - - -I - - - + - -
4
Ik
I I I I I I I I I I I I I I I I I
3
- - L - -L - - -'- - - L ---'---1---'---L---'---1---'---L---'---L---'---L---'---L2 1 1 1
+------+ --- I ---+- -+---I---+---I---+---I---+---I------I---+--
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 57
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.01
0.11
12.00
1.86
0.44
11.72
13.00
2.17
0.62
0.78
14.00
2.30
0.71
0.48
15.00
2.40
0.77
0.39
16.00
2.47
0.82
0.31
17.00
2.53
0.86
0.27
18.00
2.59
0.90
0.24
19.00
2.64
0.93
0.21
20.00
2.68
0.96
0.18
21.00
2.71
0.98
0.17
22.00
2.75
1.01
0.17
23.00
2.78
1.03
0.16
24.00
2.81
1.05
0.15
25.00
2.81
1.05
0.00
26.00
2.81
1.05
0.00
27.00
2.81
1.05
0.00
28.00
2.81
1.05
0.00
29.00
2.81
1.05
0.00
30.00
2.81
1.05
0.00
31.00
2.81
1.05
0.00
32.00
2.81
1.05
0.00
33.00
2.81
1.05
0.00
34.00
2.81
1.05
0.00
35.00
2.81
1.05
0.00
36.00
2.81
1.05
0.00
37.00
2.81
1.05
0.00
38.00
2.81
1.05
0.00
39.00
2.81
1.05
0.00
40.00
2.81
1.05
0.00
41.00
2.81
1.05
0.00
42.00
2.81
1.05
0.00
43.00
2.81
1.05
0.00
44.00
2.81
1.05
0.00
45.00
2.81
1.05
0.00
46.00
2.81
1.05
0.00
47.00
2.81
1.05
0.00
48.00
2.81
1.05
0.00
49.00
2.81
1.05
0.00
50.00
2.81
1.05
0.00
51.00
2.81
1.05
0.00
52.00
2.81
1.05
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
1.05
0.00
54.00
2.81
1.05
0.00
55.00
2.81
1.05
0.00
56.00
2.81
1.05
0.00
57.00
2.81
1.05
0.00
58.00
2.81
1.05
0.00
59.00
2.81
1.05
0.00
60.00
2.81
1.05
0.00
61.00
2.81
1.05
0.00
62.00
2.81
1.05
0.00
63.00
2.81
1.05
0.00
64.00
2.81
1.05
0.00
65.00
2.81
1.05
0.00
66.00
2.81
1.05
0.00
67.00
2.81
1.05
0.00
68.00
2.81
1.05
0.00
69.00
2.81
1.05
0.00
70.00
2.81
1.05
0.00
71.00
2.81
1.05
0.00
72.00
2.81
1.05
0.00
73.00
2.81
1.05
0.00
74.00
2.81
1.05
0.00
75.00
2.81
1.05
0.00
76.00
2.81
1.05
0.00
77.00
2.81
1.05
0.00
78.00
2.81
1.05
0.00
79.00
2.81
1.05
0.00
80.00
2.81
1.05
0.00
81.00
2.81
1.05
0.00
82.00
2.81
1.05
0.00
83.00
2.81
1.05
0.00
84.00
2.81
1.05
0.00
85.00
2.81
1.05
0.00
86.00
2.81
1.05
0.00
87.00
2.81
1.05
0.00
88.00
2.81
1.05
0.00
89.00
2.81
1.05
0.00
90.00
2.81
1.05
0.00
91.00
2.81
1.05
0.00
92.00
2.81
1.05
0.00
93.00
2.81
1.05
0.00
94.00
2.81
1.05
0.00
95.00
2.81
1.05
0.00
96.00
2.81
1.05
0.00
97.00
2.81
1.05
0.00
98.00
2.81
1.05
0.00
99.00
2.81
1.05
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 58
Summary for Subcatchment 11S: Bypass #1
Runoff = 2.02 cfs @ 12.13 hrs, Volume= 0.196 af, Depth= 0.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
4.560
58 Woods/grass comb., Good, HSG B
1.020
98 Water Surface, HSG B
5.580
65 Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
16.9 Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
� � � � � � � � � � � � � � � � � � � ■Runoff
2.02 cfs
2 type 112'4-hr
1y,r•-24hr Rainfall=2!81"
Runoff Area=5.580 at
Runoff Vplu',mp=0r19,6 clf
Runoff Depth'0!421'
LL 1 -----TcT16.9 mih
CN,=6$
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 59
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.10
0.90
13.00
2.17
0.18
0.35
14.00
2.30
0.23
0.22
15.00
2.40
0.26
0.18
16.00
2.47
0.29
0.14
17.00
2.53
0.31
0.13
18.00
2.59
0.33
0.11
19.00
2.64
0.35
0.10
20.00
2.68
0.37
0.09
21.00
2.71
0.38
0.08
22.00
2.75
0.39
0.08
23.00
2.78
0.41
0.08
24.00
2.81
0.42
0.08
25.00
2.81
0.42
0.00
26.00
2.81
0.42
0.00
27.00
2.81
0.42
0.00
28.00
2.81
0.42
0.00
29.00
2.81
0.42
0.00
30.00
2.81
0.42
0.00
31.00
2.81
0.42
0.00
32.00
2.81
0.42
0.00
33.00
2.81
0.42
0.00
34.00
2.81
0.42
0.00
35.00
2.81
0.42
0.00
36.00
2.81
0.42
0.00
37.00
2.81
0.42
0.00
38.00
2.81
0.42
0.00
39.00
2.81
0.42
0.00
40.00
2.81
0.42
0.00
41.00
2.81
0.42
0.00
42.00
2.81
0.42
0.00
43.00
2.81
0.42
0.00
44.00
2.81
0.42
0.00
45.00
2.81
0.42
0.00
46.00
2.81
0.42
0.00
47.00
2.81
0.42
0.00
48.00
2.81
0.42
0.00
49.00
2.81
0.42
0.00
50.00
2.81
0.42
0.00
51.00
2.81
0.42
0.00
52.00
2.81
0.42
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.42
0.00
54.00
2.81
0.42
0.00
55.00
2.81
0.42
0.00
56.00
2.81
0.42
0.00
57.00
2.81
0.42
0.00
58.00
2.81
0.42
0.00
59.00
2.81
0.42
0.00
60.00
2.81
0.42
0.00
61.00
2.81
0.42
0.00
62.00
2.81
0.42
0.00
63.00
2.81
0.42
0.00
64.00
2.81
0.42
0.00
65.00
2.81
0.42
0.00
66.00
2.81
0.42
0.00
67.00
2.81
0.42
0.00
68.00
2.81
0.42
0.00
69.00
2.81
0.42
0.00
70.00
2.81
0.42
0.00
71.00
2.81
0.42
0.00
72.00
2.81
0.42
0.00
73.00
2.81
0.42
0.00
74.00
2.81
0.42
0.00
75.00
2.81
0.42
0.00
76.00
2.81
0.42
0.00
77.00
2.81
0.42
0.00
78.00
2.81
0.42
0.00
79.00
2.81
0.42
0.00
80.00
2.81
0.42
0.00
81.00
2.81
0.42
0.00
82.00
2.81
0.42
0.00
83.00
2.81
0.42
0.00
84.00
2.81
0.42
0.00
85.00
2.81
0.42
0.00
86.00
2.81
0.42
0.00
87.00
2.81
0.42
0.00
88.00
2.81
0.42
0.00
89.00
2.81
0.42
0.00
90.00
2.81
0.42
0.00
91.00
2.81
0.42
0.00
92.00
2.81
0.42
0.00
93.00
2.81
0.42
0.00
94.00
2.81
0.42
0.00
95.00
2.81
0.42
0.00
96.00
2.81
0.42
0.00
97.00
2.81
0.42
0.00
98.00
2.81
0.42
0.00
99.00
2.81
0.42
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 60
Summary for Subcatchment 12S: Bypass #2
Runoff = 0.09 cfs @ 12.32 hrs, Volume= 0.021 af, Depth= 0.22"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
0.1
--T---r--T---I---r---I---r--T---I---T---I---r--T---r--T---I---r---I---r--
--T---I
--- r---I-
-- r
--T---I
--- T-
--I--- r--T------ T---I--- r------r--
■Runoff
0.095
- 0.09 cfs-----F------'F--7------T------'r---I---'
-- T------ r------' --
0.09
-7----T------r------+--+------+------+--
------Ty_pe i1-2 iir--
0.085
�--'--
-'---'---'
__J_
I
I
I
I I
0.08
-- -- - - - -
--- ------I
--i----------'1yr-24Fiii»-R4aiftfa['--2.917--
w �
0.075
0.07
-- --
- -----'---'
------'--
-------------------------------------------
---'---'
---'-
Ru n-off'_Area=1160 at- -
0006
uOff VoluMp=-0-02'11-o -
- -i---i---'---
------'L--1------1-1
-
F0.055
--L---L---'---L------L--L------L---I---LRaino##
p ^I
©� I 1 -:�21
3 0.05
E0000.045
- - - -- - ------
- -, -- +------
------
------
-- ------
--------+------
------
-- ------ ------ ------ --
-- ------ TcT24.9 -M!h- -
0.04
--+-- +------+--
---+--+------+------+--+---1---+------�����
I
0.035
--+-- +------+---I---+--+---I---+---I---+--+------+---------I---
--
0.03
--rt-- +------r--ti---'r--rt------+------'r-----'r--+------r--ti---'r--
0.025
- -r -----
---r - -�
r--r------t------r--r---r--r------r-----r--
0.02
0.015
--4-- -T
r---'---'r--r---'---T---'---'r--r---r--T------r------r--
0.01
7---7---I-
r------r--7------T------r--I---I
--T------r----

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 61
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.02
0.01
13.00
2.17
0.07
0.04
14.00
2.30
0.09
0.03
15.00
2.40
0.11
0.02
16.00
2.47
0.13
0.02
17.00
2.53
0.14
0.02
18.00
2.59
0.15
0.02
19.00
2.64
0.17
0.01
20.00
2.68
0.18
0.01
21.00
2.71
0.19
0.01
22.00
2.75
0.20
0.01
23.00
2.78
0.21
0.01
24.00
2.81
0.22
0.01
25.00
2.81
0.22
0.00
26.00
2.81
0.22
0.00
27.00
2.81
0.22
0.00
28.00
2.81
0.22
0.00
29.00
2.81
0.22
0.00
30.00
2.81
0.22
0.00
31.00
2.81
0.22
0.00
32.00
2.81
0.22
0.00
33.00
2.81
0.22
0.00
34.00
2.81
0.22
0.00
35.00
2.81
0.22
0.00
36.00
2.81
0.22
0.00
37.00
2.81
0.22
0.00
38.00
2.81
0.22
0.00
39.00
2.81
0.22
0.00
40.00
2.81
0.22
0.00
41.00
2.81
0.22
0.00
42.00
2.81
0.22
0.00
43.00
2.81
0.22
0.00
44.00
2.81
0.22
0.00
45.00
2.81
0.22
0.00
46.00
2.81
0.22
0.00
47.00
2.81
0.22
0.00
48.00
2.81
0.22
0.00
49.00
2.81
0.22
0.00
50.00
2.81
0.22
0.00
51.00
2.81
0.22
0.00
52.00
2.81
0.22
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.22
0.00
54.00
2.81
0.22
0.00
55.00
2.81
0.22
0.00
56.00
2.81
0.22
0.00
57.00
2.81
0.22
0.00
58.00
2.81
0.22
0.00
59.00
2.81
0.22
0.00
60.00
2.81
0.22
0.00
61.00
2.81
0.22
0.00
62.00
2.81
0.22
0.00
63.00
2.81
0.22
0.00
64.00
2.81
0.22
0.00
65.00
2.81
0.22
0.00
66.00
2.81
0.22
0.00
67.00
2.81
0.22
0.00
68.00
2.81
0.22
0.00
69.00
2.81
0.22
0.00
70.00
2.81
0.22
0.00
71.00
2.81
0.22
0.00
72.00
2.81
0.22
0.00
73.00
2.81
0.22
0.00
74.00
2.81
0.22
0.00
75.00
2.81
0.22
0.00
76.00
2.81
0.22
0.00
77.00
2.81
0.22
0.00
78.00
2.81
0.22
0.00
79.00
2.81
0.22
0.00
80.00
2.81
0.22
0.00
81.00
2.81
0.22
0.00
82.00
2.81
0.22
0.00
83.00
2.81
0.22
0.00
84.00
2.81
0.22
0.00
85.00
2.81
0.22
0.00
86.00
2.81
0.22
0.00
87.00
2.81
0.22
0.00
88.00
2.81
0.22
0.00
89.00
2.81
0.22
0.00
90.00
2.81
0.22
0.00
91.00
2.81
0.22
0.00
92.00
2.81
0.22
0.00
93.00
2.81
0.22
0.00
94.00
2.81
0.22
0.00
95.00
2.81
0.22
0.00
96.00
2.81
0.22
0.00
97.00
2.81
0.22
0.00
98.00
2.81
0.22
0.00
99.00
2.81
0.22
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 62
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 0.30 cfs @ 12.36 hrs, Volume= 0.111 af, Depth= 0.15"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
-- L ---1_ -- L---I--- L--- 1---L -- L--- 1--- L--- 1--- L -- L--- 1--- L--- 1--- L---I---L -
0.32 - 0.30
----Y�-----cf--s
0.3 Y-_--_--_1--_--_--_-YL------L----_--_--_'IYL------Y--------- I1---------+=1-------I1-------_--rL--_--_Y--_--_--_IL-_--_--_'I --+----1-----l-l-L,---`--
L----�---r
0.28 �1yr-24hr Rainfall�=2.81"0.26
0.24 - - - ob nofAte&S M at'IIL-
--
-
-
LL0.22 L---1--- I �I I I
........L----L--L--- L-u1f1=0r
.1� C11-�tfiQu0.2 10Fne
0.18 ---rRUnGff Dept6-0,W'
0.160 1--- -L--J-L--L--1--- L--- I --- L__L--- ---
-
T
0.12C =5 -
--Y-------r------r--Y------+------r-----r--Y---i----i
0.1 --L-- - 1---L---1---L--1---1---L---1---L__L---1---1---1---L---1---L_
0.08
0.06
0.04 --L---1---1- L---1---L--1---1---L---1---L--L---1---1---1---L---1---L-
0.02
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 63
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.01
0.01
13.00
2.17
0.03
0.21
14.00
2.30
0.05
0.15
15.00
2.40
0.06
0.13
16.00
2.47
0.08
0.11
17.00
2.53
0.09
0.10
18.00
2.59
0.10
0.09
19.00
2.64
0.11
0.09
20.00
2.68
0.12
0.07
21.00
2.71
0.12
0.07
22.00
2.75
0.13
0.07
23.00
2.78
0.14
0.07
24.00
2.81
0.15
0.07
25.00
2.81
0.15
0.00
26.00
2.81
0.15
0.00
27.00
2.81
0.15
0.00
28.00
2.81
0.15
0.00
29.00
2.81
0.15
0.00
30.00
2.81
0.15
0.00
31.00
2.81
0.15
0.00
32.00
2.81
0.15
0.00
33.00
2.81
0.15
0.00
34.00
2.81
0.15
0.00
35.00
2.81
0.15
0.00
36.00
2.81
0.15
0.00
37.00
2.81
0.15
0.00
38.00
2.81
0.15
0.00
39.00
2.81
0.15
0.00
40.00
2.81
0.15
0.00
41.00
2.81
0.15
0.00
42.00
2.81
0.15
0.00
43.00
2.81
0.15
0.00
44.00
2.81
0.15
0.00
45.00
2.81
0.15
0.00
46.00
2.81
0.15
0.00
47.00
2.81
0.15
0.00
48.00
2.81
0.15
0.00
49.00
2.81
0.15
0.00
50.00
2.81
0.15
0.00
51.00
2.81
0.15
0.00
52.00
2.81
0.15
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.15
0.00
54.00
2.81
0.15
0.00
55.00
2.81
0.15
0.00
56.00
2.81
0.15
0.00
57.00
2.81
0.15
0.00
58.00
2.81
0.15
0.00
59.00
2.81
0.15
0.00
60.00
2.81
0.15
0.00
61.00
2.81
0.15
0.00
62.00
2.81
0.15
0.00
63.00
2.81
0.15
0.00
64.00
2.81
0.15
0.00
65.00
2.81
0.15
0.00
66.00
2.81
0.15
0.00
67.00
2.81
0.15
0.00
68.00
2.81
0.15
0.00
69.00
2.81
0.15
0.00
70.00
2.81
0.15
0.00
71.00
2.81
0.15
0.00
72.00
2.81
0.15
0.00
73.00
2.81
0.15
0.00
74.00
2.81
0.15
0.00
75.00
2.81
0.15
0.00
76.00
2.81
0.15
0.00
77.00
2.81
0.15
0.00
78.00
2.81
0.15
0.00
79.00
2.81
0.15
0.00
80.00
2.81
0.15
0.00
81.00
2.81
0.15
0.00
82.00
2.81
0.15
0.00
83.00
2.81
0.15
0.00
84.00
2.81
0.15
0.00
85.00
2.81
0.15
0.00
86.00
2.81
0.15
0.00
87.00
2.81
0.15
0.00
88.00
2.81
0.15
0.00
89.00
2.81
0.15
0.00
90.00
2.81
0.15
0.00
91.00
2.81
0.15
0.00
92.00
2.81
0.15
0.00
93.00
2.81
0.15
0.00
94.00
2.81
0.15
0.00
95.00
2.81
0.15
0.00
96.00
2.81
0.15
0.00
97.00
2.81
0.15
0.00
98.00
2.81
0.15
0.00
99.00
2.81
0.15
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 64
Summary for Subcatchment 14S: Post Development #3
Runoff = 0.29 cfs @ 12.36 hrs, Volume= 0.110 af, Depth= 0.15"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 1yr-24hr Rainfall=2.81"
Area (ac) CN Description
8.670
55 Woods, Good, HSG B
0.320
58 Woods/grass comb., Good, HSG B
8.990
55 Weighted Average
8.990
100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
--+---r--+---I---r------r--+--- ---+--- ---r--+--- r--+--- ---r---
---r-
0.32-----L---- r- -- - +- - r- -- - - - - - -
0.29 cfs - -
0.3 I I I I-
-- ------ ---- -- --- - -- --Type 2 -hr-
0 28
+-- -+---i---r--+---+--+---i---+---i---+--+---+--+---i---r---i---+-
o.z6 --1-- -i ---' L__i --- L--- 1lyr24hr_RainfalL=2�$1C'
0.24
i +----- T, --- ,- iunOff Ae-ea�8.99W at
---- ----r-------
0.22
- -- +--- --- -- --- +-1 unof�Vglu�n 1=0r1'f'0-�t
oz
- --
0.18 --_T T------r------F--7---I---T------ Rune Depth=01-517
3 0.16
o -- -- +------ ------ --------+------ --------Tc*20.71nih
a 0.14
0.12
.......
-r--
----r------r--T------+------r--r------ +---I---
- -
0.1
--1--- - 1---L---1---L--1------L------L--L---L--L---I---L------L-
0.08
0.06
0.04 --L---1---1- L---1---L--L------L------L-- ------L------L------L-
0.02 I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 65
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.06
0.00
0.00
3.00
0.10
0.00
0.00
4.00
0.13
0.00
0.00
5.00
0.18
0.00
0.00
6.00
0.22
0.00
0.00
7.00
0.28
0.00
0.00
8.00
0.34
0.00
0.00
9.00
0.41
0.00
0.00
10.00
0.51
0.00
0.00
11.00
0.66
0.00
0.00
12.00
1.86
0.01
0.01
13.00
2.17
0.03
0.21
14.00
2.30
0.05
0.15
15.00
2.40
0.06
0.13
16.00
2.47
0.08
0.11
17.00
2.53
0.09
0.10
18.00
2.59
0.10
0.09
19.00
2.64
0.11
0.08
20.00
2.68
0.12
0.07
21.00
2.71
0.12
0.07
22.00
2.75
0.13
0.07
23.00
2.78
0.14
0.07
24.00
2.81
0.15
0.07
25.00
2.81
0.15
0.00
26.00
2.81
0.15
0.00
27.00
2.81
0.15
0.00
28.00
2.81
0.15
0.00
29.00
2.81
0.15
0.00
30.00
2.81
0.15
0.00
31.00
2.81
0.15
0.00
32.00
2.81
0.15
0.00
33.00
2.81
0.15
0.00
34.00
2.81
0.15
0.00
35.00
2.81
0.15
0.00
36.00
2.81
0.15
0.00
37.00
2.81
0.15
0.00
38.00
2.81
0.15
0.00
39.00
2.81
0.15
0.00
40.00
2.81
0.15
0.00
41.00
2.81
0.15
0.00
42.00
2.81
0.15
0.00
43.00
2.81
0.15
0.00
44.00
2.81
0.15
0.00
45.00
2.81
0.15
0.00
46.00
2.81
0.15
0.00
47.00
2.81
0.15
0.00
48.00
2.81
0.15
0.00
49.00
2.81
0.15
0.00
50.00
2.81
0.15
0.00
51.00
2.81
0.15
0.00
52.00
2.81
0.15
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.81
0.15
0.00
54.00
2.81
0.15
0.00
55.00
2.81
0.15
0.00
56.00
2.81
0.15
0.00
57.00
2.81
0.15
0.00
58.00
2.81
0.15
0.00
59.00
2.81
0.15
0.00
60.00
2.81
0.15
0.00
61.00
2.81
0.15
0.00
62.00
2.81
0.15
0.00
63.00
2.81
0.15
0.00
64.00
2.81
0.15
0.00
65.00
2.81
0.15
0.00
66.00
2.81
0.15
0.00
67.00
2.81
0.15
0.00
68.00
2.81
0.15
0.00
69.00
2.81
0.15
0.00
70.00
2.81
0.15
0.00
71.00
2.81
0.15
0.00
72.00
2.81
0.15
0.00
73.00
2.81
0.15
0.00
74.00
2.81
0.15
0.00
75.00
2.81
0.15
0.00
76.00
2.81
0.15
0.00
77.00
2.81
0.15
0.00
78.00
2.81
0.15
0.00
79.00
2.81
0.15
0.00
80.00
2.81
0.15
0.00
81.00
2.81
0.15
0.00
82.00
2.81
0.15
0.00
83.00
2.81
0.15
0.00
84.00
2.81
0.15
0.00
85.00
2.81
0.15
0.00
86.00
2.81
0.15
0.00
87.00
2.81
0.15
0.00
88.00
2.81
0.15
0.00
89.00
2.81
0.15
0.00
90.00
2.81
0.15
0.00
91.00
2.81
0.15
0.00
92.00
2.81
0.15
0.00
93.00
2.81
0.15
0.00
94.00
2.81
0.15
0.00
95.00
2.81
0.15
0.00
96.00
2.81
0.15
0.00
97.00
2.81
0.15
0.00
98.00
2.81
0.15
0.00
99.00
2.81
0.15
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 66
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 0.36" for 1yr-24hr event
Inflow =
6.34 cfs @
11.99 hrs, Volume=
0.385 of
Outflow =
0.07 cfs @
24.08 hrs, Volume=
0.341 af, Atten= 99%, Lag= 725.5 min
Primary =
0.07 cfs @
24.08 hrs, Volume=
0.341 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind
method, Time Span= 0.00-99.00 hrs,
dt= 0.05 hrs
Peak Elev= 567.42'
@ 24.08 hrs
Surf.Area= 16,376 sf
Storage= 14,131 cf
Plug -Flow detention time= 2,023.9 min calculated for 0.341 of (88% of inflow)
Center -of -Mass det. time= 1,968.1 min ( 2,886.9 - 918.8 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.07 cfs @ 24.08 hrs HW=567.42' (Free Discharge)
L1=RCP_Round 36" (Passes 0.07 cfs of 66.60 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.07 cfs @ 4.44 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 67
Hydrograph
6.34 Cfs
■ Inflow
❑ Outflow
-- - - -- -- -- -- -- -- --
p �} p
[OW —real-1��80-a
■Primary
7
■ Secondary
Pdak EIeV=567,42'
6
S�oragq=14,131 c';f
5
u
3
- --L--1--1--1--1--1-- --
---------------------------'--
a 3
2
1
0.07 cfs
0.00 cfs
0
0 5 10
15 20 25 30 35 40 45 50 55 60
65 70 75 80 85 90 95
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 68
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 69
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.00
0
566.50
0.00
0.00
0.00
12.50
0.93
5,217
566.86
0.04
0.04
0.00
15.00
0.35
9,326
567.12
0.06
0.06
0.00
17.50
0.25
11,363
567.25
0.06
0.06
0.00
20.00
0.18
12,700
567.33
0.07
0.07
0.00
22.50
0.16
13,623
567.39
0.07
0.07
0.00
25.00
0.00
13,910
567.41
0.07
0.07
0.00
27.50
0.00
13,292
567.37
0.07
0.07
0.00
30.00
0.00
12,689
567.33
0.07
0.07
0.00
32.50
0.00
12,099
567.30
0.06
0.06
0.00
35.00
0.00
11,524
567.26
0.06
0.06
0.00
37.50
0.00
10,964
567.23
0.06
0.06
0.00
40.00
0.00
10,418
567.19
0.06
0.06
0.00
42.50
0.00
9,887
567.16
0.06
0.06
0.00
45.00
0.00
9,370
567.13
0.06
0.06
0.00
47.50
0.00
8,869
567.09
0.05
0.05
0.00
50.00
0.00
8,382
567.06
0.05
0.05
0.00
52.50
0.00
7,910
567.03
0.05
0.05
0.00
55.00
0.00
7,453
567.00
0.05
0.05
0.00
57.50
0.00
7,011
566.98
0.05
0.05
0.00
60.00
0.00
6,584
566.95
0.05
0.05
0.00
62.50
0.00
6,172
566.92
0.04
0.04
0.00
65.00
0.00
5,776
566.90
0.04
0.04
0.00
67.50
0.00
5,395
566.87
0.04
0.04
0.00
70.00
0.00
5,029
566.85
0.04
0.04
0.00
72.50
0.00
4,679
566.82
0.04
0.04
0.00
75.00
0.00
4,345
566.80
0.04
0.04
0.00
77.50
0.00
4,026
566.78
0.03
0.03
0.00
80.00
0.00
3,723
566.76
0.03
0.03
0.00
82.50
0.00
3,435
566.74
0.03
0.03
0.00
85.00
0.00
3,165
566.72
0.03
0.03
0.00
87.50
0.00
2,909
566.70
0.03
0.03
0.00
90.00
0.00
2,669
566.69
0.03
0.03
0.00
92.50
0.00
2,446
566.67
0.02
0.02
0.00
95.00
0.00
2,241
566.66
0.02
0.02
0.00
97.50
0.00
2,050
566.64
0.02
0.02
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 70
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 71
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 72
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 1.11" for 1yr-24hr event
Inflow =
19.31 cfs @
11.96 hrs,
Volume=
0.894 of
Outflow =
0.24 cfs @
21.40 hrs,
Volume=
0.884 af, Atten= 99%, Lag= 566.5 min
Primary =
0.24 cfs @
21.40 hrs,
Volume=
0.884 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 560.80' @ 21.40 hrs Surf.Area= 14,776 sf Storage= 28,646 cf
Plug -Flow detention time= 1,435.8 min calculated for 0.884 of (99% of inflow)
Center -of -Mass det. time= 1,431.1 min ( 2,276.5 - 845.4 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.24 cfs @ 21.40 hrs HW=560.80' (Free Discharge)
L1=RCP_Round 36" (Passes 0.24 cfs of 90.86 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.24 cfs @ 7.14 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 73
Pond 6P: BMP #2
Hydrograph
,
- -I
- -I
- -I - -I
-1--1--J--�---1---1---1---1---1---L--L--L--L--1--1--1--
cfs
- - 7 -
-I -
-I - - -I--
19.31
------------------------Irtf]OW'1
Ark &a=-9.67 - aC--
----
21
20
--+-
--
-
-+--+--+--+--+------------------+--+--+--+--+--+--+--
- --
----------------------beak-�Iev=560,
O'L--
19
--L-
-1--1--1--J--J------------'--
_ L - 1--
5
18
--r-
-
-T--T--
-�--�-
--
--
--'
--------------
--'-------------
- -- --� -- -
fare �2 46_cf
16
�'i
'
15
----
-----------------------------------------------------
14
--+-
-+--+--+--+--+------------------+--+--+--+--+--+--+--
13
w12
--r-
--L-
-T--T--T--T--T---------------
-1--1--1--J--
---1---1---1---1---1---L--L--L--L--1--1--1--
-- -- --r--r--T--T--T--
u
" 11
3
'
--r-
-T--T--
--
--
------------------r--r--r--r--r--
-- --
8
-
-
7
--L-
-1--1--1--J--
---1---1---1---1---1---L--L--L--L--1--1--1--
6
5
,,
--,
--L-
-
- --
1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1--
-----------------------,---,
--, --, --, -- -- -- --
4
�
3
- /
1
0.24
cfs
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
.0 65 70 75 :0 85 •0 95
Time (hours)
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 74
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 75
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.00
0
558.50
0.00
0.00
0.00
10.00
0.00
0
558.50
0.00
0.00
0.00
12.50
1.77
20,192
560.21
0.21
0.21
0.00
15.00
0.57
26,088
560.63
0.23
0.23
0.00
17.50
0.37
27,954
560.75
0.24
0.24
0.00
20.00
0.26
28,616
560.80
0.24
0.24
0.00
22.50
0.23
28,628
560.80
0.24
0.24
0.00
25.00
0.00
27,735
560.74
0.24
0.24
0.00
27.50
0.00
25,614
560.59
0.23
0.23
0.00
30.00
0.00
23,569
560.45
0.22
0.22
0.00
32.50
0.00
21,601
560.31
0.21
0.21
0.00
35.00
0.00
19,713
560.17
0.21
0.21
0.00
37.50
0.00
17,905
560.03
0.20
0.20
0.00
40.00
0.00
16,180
559.90
0.19
0.19
0.00
42.50
0.00
14,539
559.78
0.18
0.18
0.00
45.00
0.00
12,984
559.65
0.17
0.17
0.00
47.50
0.00
11,516
559.53
0.16
0.16
0.00
50.00
0.00
10,137
559.42
0.15
0.15
0.00
52.50
0.00
8,848
559.31
0.14
0.14
0.00
55.00
0.00
7,652
559.21
0.13
0.13
0.00
57.50
0.00
6,550
559.11
0.12
0.12
0.00
60.00
0.00
5,542
559.03
0.11
0.11
0.00
62.50
0.00
4,632
558.94
0.10
0.10
0.00
65.00
0.00
3,820
558.87
0.08
0.08
0.00
67.50
0.00
3,109
558.80
0.07
0.07
0.00
70.00
0.00
2,501
558.75
0.06
0.06
0.00
72.50
0.00
1,997
558.70
0.05
0.05
0.00
75.00
0.00
1,600
558.66
0.04
0.04
0.00
77.50
0.00
1,307
558.63
0.03
0.03
0.00
80.00
0.00
1,087
558.61
0.02
0.02
0.00
82.50
0.00
919
558.59
0.02
0.02
0.00
85.00
0.00
791
558.58
0.01
0.01
0.00
87.50
0.00
694
558.57
0.01
0.01
0.00
90.00
0.00
618
558.56
0.01
0.01
0.00
92.50
0.00
553
558.56
0.01
0.01
0.00
95.00
0.00
495
558.55
0.01
0.01
0.00
97.50
0.00
444
558.54
0.01
0.01
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 76
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 77
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 78
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 1.05" for 1yr-24hr event
Inflow =
13.03 cfs @
11.96 hrs,
Volume=
0.605 of
Outflow =
0.11 cfs @
24.05 hrs,
Volume=
0.544 af, Atten= 99%, Lag= 725.2 min
Primary =
0.11 cfs @
24.05 hrs,
Volume=
0.544 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 570.51' @ 24.05 hrs Surf.Area= 12,334 sf Storage= 21,948 cf
Plug -Flow detention time= 2,110.1 min calculated for 0.543 of (90% of inflow)
Center -of -Mass det. time= 2,060.0 min ( 2,908.8 - 848.8 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.11 cfs @ 24.05 hrs HW=570.51' (Free Discharge)
L1=RCP_Round 24" (Passes 0.11 cfs of 33.71 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.11 cfs @ 6.70 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 79
Pond 7P: BMP #3
Hydrograph
,'I
-- ----+--+--
I
13.03 cfs
-- -----1---1---1---1---1--- --I--I--I--1--1--1--
I I I I I I I I I I I I I I I
---- -t-- t
--!-;--;---III---III---III-Iftf]OW'Area=6:9OO aC--
14
--L--1--1--1--J--
---1---1---1---1-- -- -
Freak �Cav �.15�11
13
-_I_________________I___I--�i----,.--------I
----pl----
12
11
--It- - It--t-
I I I
-rt-- -- ---III---III---III---III--c3LlJi1a-21,-9`'F>D-c -
I I I I I I I I I I
10
I I I
I I I I I I I I I I F F I I I
9
--t- -t--t---------li---li---lr--lr--t--t--t--t--t-
-t--t--t--
N
U $
/II
L _ _ L _ _ L _ _ L _ _ L
3 7
o
- -
---1---1---1---1---1---1---
LL 6
--t- -t--t--t--t--t---li---li---li---li---t--t--t--t--t--t--t--t--
5
/I
- L - - 1 - - 1
- - 1 - - 1 - - 1 - - -1- - -1- - -1- - -1- - -1- - - L - - L-
4
3
2
0.11 cfs
0.00
cfs
0
0 5 10
15 20 25 30
35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
■ Inflow
❑ outflow
■ Primary
■ Seconda ry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 80
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 81
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.00
0
568.50
0.00
0.00
0.00
10.00
0.00
0
568.50
0.00
0.00
0.00
12.50
1.21
13,538
569.80
0.08
0.08
0.00
15.00
0.39
18,155
570.20
0.10
0.10
0.00
17.50
0.26
20,029
570.35
0.10
0.10
0.00
20.00
0.18
21,074
570.44
0.10
0.10
0.00
22.50
0.16
21,661
570.49
0.11
0.11
0.00
25.00
0.00
21,607
570.48
0.10
0.10
0.00
27.50
0.00
20,672
570.41
0.10
0.10
0.00
30.00
0.00
19,756
570.33
0.10
0.10
0.00
32.50
0.00
18,860
570.26
0.10
0.10
0.00
35.00
0.00
17,983
570.18
0.10
0.10
0.00
37.50
0.00
17,126
570.11
0.09
0.09
0.00
40.00
0.00
16,289
570.04
0.09
0.09
0.00
42.50
0.00
15,471
569.97
0.09
0.09
0.00
45.00
0.00
14,674
569.90
0.09
0.09
0.00
47.50
0.00
13,897
569.83
0.09
0.09
0.00
50.00
0.00
13,140
569.77
0.08
0.08
0.00
52.50
0.00
12,404
569.70
0.08
0.08
0.00
55.00
0.00
11,688
569.64
0.08
0.08
0.00
57.50
0.00
10,994
569.57
0.08
0.08
0.00
60.00
0.00
10,321
569.51
0.07
0.07
0.00
62.50
0.00
9,668
569.45
0.07
0.07
0.00
65.00
0.00
9,038
569.40
0.07
0.07
0.00
67.50
0.00
8,428
569.34
0.07
0.07
0.00
70.00
0.00
7,841
569.28
0.06
0.06
0.00
72.50
0.00
7,275
569.23
0.06
0.06
0.00
75.00
0.00
6,731
569.18
0.06
0.06
0.00
77.50
0.00
6,209
569.13
0.06
0.06
0.00
80.00
0.00
5,710
569.08
0.05
0.05
0.00
82.50
0.00
5,232
569.04
0.05
0.05
0.00
85.00
0.00
4,777
568.99
0.05
0.05
0.00
87.50
0.00
4,345
568.95
0.05
0.05
0.00
90.00
0.00
3,936
568.91
0.04
0.04
0.00
92.50
0.00
3,550
568.87
0.04
0.04
0.00
95.00
0.00
3,188
568.84
0.04
0.04
0.00
97.50
0.00
2,848
568.80
0.04
0.04
0.00

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 82
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 83
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 84
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 0.84" for 1yr-24hr event
Inflow = 0.17 cfs @ 12.33 hrs, Volume= 0.565 of
Primary = 0.17 cfs @ 12.33 hrs, Volume= 0.565 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
--+---1---1---
-----------+--+---1---+--+---1---1---+---1---1---+--+------
--
---1---
--+---1---1-------1---1----------1---
-- ---1--
+--+--- 1--
■Inflow
0.19
--+--+---1---+--+---1---1---+---1---1---+--+---1---+--+---1--
1 1
■ Primary
0.18
0.17 cfs
-1---,--r1------;--
1
1
1
1
------1,
�nflow1Are=O.,01 ac-
0.17
--t -r--r--r---1---r--r---1---r--r---1---r--r--r---1---r--r---1--
0.16
--T-1---r--�---r--r--7---1---1---r---1---r--r--�---1---r--r---1--
0.15
--T-T--T--
---1i---T--T---1---T--T---1i---1i---T--
---1i---T--T---1i--
0.14
---1-------1---1---1I
---1---1---1I
-- ---1---1---1I---1---1---1I -- ---1--
0.13
'
---
------------------------------------------------
1I1I
0.12
w 0.11
0.1
0 0.09-=-1--
E 0.08
i
I I
I
I
I I
I I
1
I I I I I
0.07
0.06
� '
--1--1---L--J---1---L--1---1---L--1--J---1---
I
--
0.05
-L-1---L--J---1---L--1---1---1---
---1---1---L-- --
0.04
- -1---
--
---1---
-----1---1---
---1---1--- -----1--- -- -
0.03
-+ -1---
--
---1---
--+---1---1---
---1---1--- -----1--- -- ---1--
0.02
0.01
0
0 5
10 15 20
25
30
35 40
45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 85
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.00
0.00
0.00
10.00
0.00
0.00
0.00
11.00
0.00
0.00
0.00
12.00
0.07
0.00
0.07
13.00
0.13
0.00
0.13
14.00
0.12
0.00
0.12
15.00
0.12
0.00
0.12
16.00
0.12
0.00
0.12
17.00
0.12
0.00
0.12
18.00
0.12
0.00
0.12
19.00
0.12
0.00
0.12
20.00
0.12
0.00
0.12
21.00
0.12
0.00
0.12
22.00
0.12
0.00
0.12
23.00
0.12
0.00
0.12
24.00
0.12
0.00
0.12
25.00
0.11
0.00
0.11
26.00
0.10
0.00
0.10
27.00
0.10
0.00
0.10
28.00
0.10
0.00
0.10
29.00
0.10
0.00
0.10
30.00
0.10
0.00
0.10
31.00
0.10
0.00
0.10
32.00
0.10
0.00
0.10
33.00
0.10
0.00
0.10
34.00
0.10
0.00
0.10
35.00
0.10
0.00
0.10
36.00
0.10
0.00
0.10
37.00
0.09
0.00
0.09
38.00
0.09
0.00
0.09
39.00
0.09
0.00
0.09
40.00
0.09
0.00
0.09
41.00
0.09
0.00
0.09
42.00
0.09
0.00
0.09
43.00
0.09
0.00
0.09
44.00
0.09
0.00
0.09
45.00
0.09
0.00
0.09
46.00
0.09
0.00
0.09
47.00
0.09
0.00
0.09
48.00
0.08
0.00
0.08
49.00
0.08
0.00
0.08
50.00
0.08
0.00
0.08
51.00
0.08
0.00
0.08
52.00
0.08
0.00
0.08
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.08
0.00
0.08
54.00
0.08
0.00
0.08
55.00
0.08
0.00
0.08
56.00
0.08
0.00
0.08
57.00
0.08
0.00
0.08
58.00
0.08
0.00
0.08
59.00
0.07
0.00
0.07
60.00
0.07
0.00
0.07
61.00
0.07
0.00
0.07
62.00
0.07
0.00
0.07
63.00
0.07
0.00
0.07
64.00
0.07
0.00
0.07
65.00
0.07
0.00
0.07
66.00
0.07
0.00
0.07
67.00
0.07
0.00
0.07
68.00
0.07
0.00
0.07
69.00
0.07
0.00
0.07
70.00
0.06
0.00
0.06
71.00
0.06
0.00
0.06
72.00
0.06
0.00
0.06
73.00
0.06
0.00
0.06
74.00
0.06
0.00
0.06
75.00
0.06
0.00
0.06
76.00
0.06
0.00
0.06
77.00
0.06
0.00
0.06
78.00
0.06
0.00
0.06
79.00
0.06
0.00
0.06
80.00
0.05
0.00
0.05
81.00
0.05
0.00
0.05
82.00
0.05
0.00
0.05
83.00
0.05
0.00
0.05
84.00
0.05
0.00
0.05
85.00
0.05
0.00
0.05
86.00
0.05
0.00
0.05
87.00
0.05
0.00
0.05
88.00
0.05
0.00
0.05
89.00
0.05
0.00
0.05
90.00
0.04
0.00
0.04
91.00
0.04
0.00
0.04
92.00
0.04
0.00
0.04
93.00
0.04
0.00
0.04
94.00
0.04
0.00
0.04
95.00
0.04
0.00
0.04
96.00
0.04
0.00
0.04
97.00
0.04
0.00
0.04
98.00
0.04
0.00
0.04
99.00
0.03
0.00
0.03

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 86
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61% Impervious, Inflow Depth > 0.60" for 1yr-24hr event
Inflow = 2.25 cfs @ 12.13 hrs, Volume= 1.421 of
Primary = 2.25 cfs @ 12.13 hrs, Volume= 1.421 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 1 yr-24hr Rainfall=2.81"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 87
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.00
0.00
0.00
10.00
0.00
0.00
0.00
11.00
0.00
0.00
0.00
12.00
1.09
0.00
1.09
13.00
0.62
0.00
0.62
14.00
0.50
0.00
0.50
15.00
0.47
0.00
0.47
16.00
0.44
0.00
0.44
17.00
0.43
0.00
0.43
18.00
0.42
0.00
0.42
19.00
0.41
0.00
0.41
20.00
0.40
0.00
0.40
21.00
0.39
0.00
0.39
22.00
0.39
0.00
0.39
23.00
0.39
0.00
0.39
24.00
0.39
0.00
0.39
25.00
0.31
0.00
0.31
26.00
0.31
0.00
0.31
27.00
0.30
0.00
0.30
28.00
0.30
0.00
0.30
29.00
0.29
0.00
0.29
30.00
0.29
0.00
0.29
31.00
0.29
0.00
0.29
32.00
0.28
0.00
0.28
33.00
0.28
0.00
0.28
34.00
0.27
0.00
0.27
35.00
0.27
0.00
0.27
36.00
0.26
0.00
0.26
37.00
0.26
0.00
0.26
38.00
0.26
0.00
0.26
39.00
0.25
0.00
0.25
40.00
0.25
0.00
0.25
41.00
0.24
0.00
0.24
42.00
0.24
0.00
0.24
43.00
0.23
0.00
0.23
44.00
0.23
0.00
0.23
45.00
0.22
0.00
0.22
46.00
0.22
0.00
0.22
47.00
0.22
0.00
0.22
48.00
0.21
0.00
0.21
49.00
0.21
0.00
0.21
50.00
0.20
0.00
0.20
51.00
0.20
0.00
0.20
52.00
0.19
0.00
0.19
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.19
0.00
0.19
54.00
0.18
0.00
0.18
55.00
0.18
0.00
0.18
56.00
0.17
0.00
0.17
57.00
0.17
0.00
0.17
58.00
0.16
0.00
0.16
59.00
0.16
0.00
0.16
60.00
0.15
0.00
0.15
61.00
0.15
0.00
0.15
62.00
0.14
0.00
0.14
63.00
0.14
0.00
0.14
64.00
0.13
0.00
0.13
65.00
0.13
0.00
0.13
66.00
0.12
0.00
0.12
67.00
0.12
0.00
0.12
68.00
0.11
0.00
0.11
69.00
0.11
0.00
0.11
70.00
0.10
0.00
0.10
71.00
0.10
0.00
0.10
72.00
0.09
0.00
0.09
73.00
0.09
0.00
0.09
74.00
0.08
0.00
0.08
75.00
0.07
0.00
0.07
76.00
0.07
0.00
0.07
77.00
0.06
0.00
0.06
78.00
0.06
0.00
0.06
79.00
0.06
0.00
0.06
80.00
0.05
0.00
0.05
81.00
0.05
0.00
0.05
82.00
0.05
0.00
0.05
83.00
0.05
0.00
0.05
84.00
0.04
0.00
0.04
85.00
0.04
0.00
0.04
86.00
0.04
0.00
0.04
87.00
0.04
0.00
0.04
88.00
0.04
0.00
0.04
89.00
0.03
0.00
0.03
90.00
0.03
0.00
0.03
91.00
0.03
0.00
0.03
92.00
0.03
0.00
0.03
93.00
0.03
0.00
0.03
94.00
0.03
0.00
0.03
95.00
0.03
0.00
0.03
96.00
0.03
0.00
0.03
97.00
0.03
0.00
0.03
98.00
0.03
0.00
0.03
99.00
0.02
0.00
0.02

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 88
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=0.28"
Tc=21.7 min CN=57 Runoff=4.10 cfs 0.723 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=0.23"
Tc=24.9 min CN=55 Runoff=0.43 cfs 0.107 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=0.48"
Tc=5.0 min CN=63 Runoff=9.49 cfs 0.524 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=1.34"
Tc=5.0 min CN=80 Runoff=23.37 cfs 1.080 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=1.28"
Tc=5.0 min CN=79 Runoff=15.87 cfs 0.734 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=0.56"
Tc=16.9 min CN=65 Runoff=3.01 cfs 0.261 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=0.31"
Tc=24.9 min CN=58 Runoff=0.17 cfs 0.030 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=0.23"
Tc=20.7 min CN=55 Runoff=0.77 cfs 0.172 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=0.23"
Tc=20.7 min CN=55 Runoff=0.76 cfs 0.171 of
Pond 5P: BMP #1 Peak Elev=567.75' Storage=19,627 cf Inflow=9.49 cfs 0.524 of
Primary=0.08 cfs 0.435 of Secondary=0.00 cfs 0.000 of Outflow=0.08 cfs 0.435 of
Pond 6P: BMP #2 Peak Elev=561.16' Storage=34,082 cf Inflow=23.37 cfs 1.080 of
Primary=0.38 cfs 1.068 of Secondary=0.00 cfs 0.000 of Outflow=0.38 cfs 1.068 of
Pond 7P: BMP #3 Peak Elev=570.92' Storage=27,123 cf Inflow=15.87 cfs 0.734 of
Primary=0.12 cfs 0.629 of Secondary=0.00 cfs 0.000 of Outflow=0.12 cfs 0.629 of
Link 17L: Post Development#2 Inflow=0.26 cfs 0.659 of
Primary=0.26 cfs 0.659 of
Link 18L: Post Development#1
Inflow=3.26 cfs 1.765 of
Primary=3.26 cfs 1.765 of
Total Runoff Area = 90.560 ac Runoff Volume = 3.802 of Average Runoff Depth = 0.50"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 89
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 4.10 cfs @ 12.24 hrs, Volume= 0.723 af, Depth= 0.28"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
� � � � � � � � � � � � � � � � � � � ■Runoff
4.10 cfs
--�---i---�--- I---�---I---�---I--�---�I -- I 2 '4 '
-tYs�e I,I -h,r-
4
2yr24hr Rainfall'=3.121'
-J---1------i--- ---- L--- Runoff Area=30.590-at-
3 Runoff Vp16mq=672,3 clf
Runoff Depth 0.287
o-- -- -------7------T------r---'--- -- ---' --,--- -i
LL 2 TcT21.7 �YIIn
RCN',=57
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 90
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.04
0.51
13.00
2.41
0.10
1.47
14.00
2.56
0.13
0.93
15.00
2.66
0.15
0.75
16.00
2.75
0.17
0.63
17.00
2.81
0.19
0.55
18.00
2.87
0.21
0.51
19.00
2.93
0.22
0.45
20.00
2.97
0.24
0.39
21.00
3.01
0.25
0.37
22.00
3.05
0.26
0.36
23.00
3.08
0.27
0.35
24.00
3.12
0.28
0.34
25.00
3.12
0.28
0.00
26.00
3.12
0.28
0.00
27.00
3.12
0.28
0.00
28.00
3.12
0.28
0.00
29.00
3.12
0.28
0.00
30.00
3.12
0.28
0.00
31.00
3.12
0.28
0.00
32.00
3.12
0.28
0.00
33.00
3.12
0.28
0.00
34.00
3.12
0.28
0.00
35.00
3.12
0.28
0.00
36.00
3.12
0.28
0.00
37.00
3.12
0.28
0.00
38.00
3.12
0.28
0.00
39.00
3.12
0.28
0.00
40.00
3.12
0.28
0.00
41.00
3.12
0.28
0.00
42.00
3.12
0.28
0.00
43.00
3.12
0.28
0.00
44.00
3.12
0.28
0.00
45.00
3.12
0.28
0.00
46.00
3.12
0.28
0.00
47.00
3.12
0.28
0.00
48.00
3.12
0.28
0.00
49.00
3.12
0.28
0.00
50.00
3.12
0.28
0.00
51.00
3.12
0.28
0.00
52.00
3.12
0.28
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.28
0.00
54.00
3.12
0.28
0.00
55.00
3.12
0.28
0.00
56.00
3.12
0.28
0.00
57.00
3.12
0.28
0.00
58.00
3.12
0.28
0.00
59.00
3.12
0.28
0.00
60.00
3.12
0.28
0.00
61.00
3.12
0.28
0.00
62.00
3.12
0.28
0.00
63.00
3.12
0.28
0.00
64.00
3.12
0.28
0.00
65.00
3.12
0.28
0.00
66.00
3.12
0.28
0.00
67.00
3.12
0.28
0.00
68.00
3.12
0.28
0.00
69.00
3.12
0.28
0.00
70.00
3.12
0.28
0.00
71.00
3.12
0.28
0.00
72.00
3.12
0.28
0.00
73.00
3.12
0.28
0.00
74.00
3.12
0.28
0.00
75.00
3.12
0.28
0.00
76.00
3.12
0.28
0.00
77.00
3.12
0.28
0.00
78.00
3.12
0.28
0.00
79.00
3.12
0.28
0.00
80.00
3.12
0.28
0.00
81.00
3.12
0.28
0.00
82.00
3.12
0.28
0.00
83.00
3.12
0.28
0.00
84.00
3.12
0.28
0.00
85.00
3.12
0.28
0.00
86.00
3.12
0.28
0.00
87.00
3.12
0.28
0.00
88.00
3.12
0.28
0.00
89.00
3.12
0.28
0.00
90.00
3.12
0.28
0.00
91.00
3.12
0.28
0.00
92.00
3.12
0.28
0.00
93.00
3.12
0.28
0.00
94.00
3.12
0.28
0.00
95.00
3.12
0.28
0.00
96.00
3.12
0.28
0.00
97.00
3.12
0.28
0.00
98.00
3.12
0.28
0.00
99.00
3.12
0.28
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 91
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 0.43 cfs @ 12.33 hrs, Volume= 0.107 af, Depth= 0.23"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
--+----- ----- ---+--+---+--+------+------+--+------+------r------+-
0.48 -----'---------',-------- _
0.46 - 0.43 cfs ----- ------ --------+------ --------+------ ------ -
0.44 -- --- -------r------r--+------+------r-- ---r---�(-�i-p--r---iw---r-
0.42 ---'--------------'---' _-Typeaa-�4 r-
0.4 --+---+--+---+--+---+--+------+--+---+--+---+--�j+--+---+-- I - --+-
0.38 -- -- -------�,------�, -----�,------�r2j/�'��h - RQiF1fall�i 311 "
0.36 --L---1---1---L---1---L--1------L---'---L--------.+---'---L---'---L-
0.34 -- ---7---1i---r---li---Ir--7---1i------- li-IRu"ff Ad�ea= 62aat-
0.32 ---' -- --'-----------------'------------------------' --
-------=-----
0.3 --+---+------+--+---+--+------+-]�-U"ff V-plu e=0r14'1-Of-
w 0.28 -- -- ----,---,---,---, -----,------,---; -- ------ +---,---;---,---; -
o.z6 -- -- - + --- L --- - --- - --- + --- LF Unof# DePtft=0.Z31'-
3 0.24 --+-- +------+--+---+--+------+------+--+---+--+------I--I---+-
0.2z ----- ----------------------------------------- Tc:T24.9_Ml1-
LL 0.2 j
0.18 -- -- +------r------r--+------+------ -- - ----+------ -W-
0.16 ---' -- -'-----------------'-------------L---'-------'---------------
0.14 - - + -- ------r------r--+------+------r--+---r--+---I---r------r-
0.12
0.1 --L---1---L---1---L--1------+------L-- ---L--+------L------L-
0.04 --+-- -+--+-+--+---+--+------+--+---+--+---+--+--+---+--+---+-
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 92
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.02
0.02
13.00
2.41
0.07
0.22
14.00
2.56
0.09
0.15
15.00
2.66
0.11
0.12
16.00
2.75
0.13
0.10
17.00
2.81
0.15
0.09
18.00
2.87
0.16
0.08
19.00
2.93
0.18
0.07
20.00
2.97
0.19
0.06
21.00
3.01
0.20
0.06
22.00
3.05
0.21
0.06
23.00
3.08
0.22
0.06
24.00
3.12
0.23
0.06
25.00
3.12
0.23
0.00
26.00
3.12
0.23
0.00
27.00
3.12
0.23
0.00
28.00
3.12
0.23
0.00
29.00
3.12
0.23
0.00
30.00
3.12
0.23
0.00
31.00
3.12
0.23
0.00
32.00
3.12
0.23
0.00
33.00
3.12
0.23
0.00
34.00
3.12
0.23
0.00
35.00
3.12
0.23
0.00
36.00
3.12
0.23
0.00
37.00
3.12
0.23
0.00
38.00
3.12
0.23
0.00
39.00
3.12
0.23
0.00
40.00
3.12
0.23
0.00
41.00
3.12
0.23
0.00
42.00
3.12
0.23
0.00
43.00
3.12
0.23
0.00
44.00
3.12
0.23
0.00
45.00
3.12
0.23
0.00
46.00
3.12
0.23
0.00
47.00
3.12
0.23
0.00
48.00
3.12
0.23
0.00
49.00
3.12
0.23
0.00
50.00
3.12
0.23
0.00
51.00
3.12
0.23
0.00
52.00
3.12
0.23
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.23
0.00
54.00
3.12
0.23
0.00
55.00
3.12
0.23
0.00
56.00
3.12
0.23
0.00
57.00
3.12
0.23
0.00
58.00
3.12
0.23
0.00
59.00
3.12
0.23
0.00
60.00
3.12
0.23
0.00
61.00
3.12
0.23
0.00
62.00
3.12
0.23
0.00
63.00
3.12
0.23
0.00
64.00
3.12
0.23
0.00
65.00
3.12
0.23
0.00
66.00
3.12
0.23
0.00
67.00
3.12
0.23
0.00
68.00
3.12
0.23
0.00
69.00
3.12
0.23
0.00
70.00
3.12
0.23
0.00
71.00
3.12
0.23
0.00
72.00
3.12
0.23
0.00
73.00
3.12
0.23
0.00
74.00
3.12
0.23
0.00
75.00
3.12
0.23
0.00
76.00
3.12
0.23
0.00
77.00
3.12
0.23
0.00
78.00
3.12
0.23
0.00
79.00
3.12
0.23
0.00
80.00
3.12
0.23
0.00
81.00
3.12
0.23
0.00
82.00
3.12
0.23
0.00
83.00
3.12
0.23
0.00
84.00
3.12
0.23
0.00
85.00
3.12
0.23
0.00
86.00
3.12
0.23
0.00
87.00
3.12
0.23
0.00
88.00
3.12
0.23
0.00
89.00
3.12
0.23
0.00
90.00
3.12
0.23
0.00
91.00
3.12
0.23
0.00
92.00
3.12
0.23
0.00
93.00
3.12
0.23
0.00
94.00
3.12
0.23
0.00
95.00
3.12
0.23
0.00
96.00
3.12
0.23
0.00
97.00
3.12
0.23
0.00
98.00
3.12
0.23
0.00
99.00
3.12
0.23
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 93
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 9.49 cfs @ 11.98 hrs, Volume= 0.524 af, Depth= 0.48"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
--+---+--+---+--+---+--+------+------+---+--+--+---+--+---+--+---+-- ■Runoff
10 9.49 cfs
-- - -- -- --- -- -- --- -- --- y�e--24=hr-
---'I-- - ------ ------ ------ ------ II -` 1 r24h- -Rainfal1=112"--
8
-- -----------------+---------- --- Runbff Area='12.1980-ad--
7 - -- - -- --- -- --! - -- Furio#-\/Qlumq=0524---
w 6 1 11
-- - - --- +--- +--- +--- Runoff Depth,=0.48�, --
LL 5 Tt.=5.0 min
--+---+---+--+---+--+---+--+------+---+--+--+---+---I--I --+--
4 CN,=6$
-- 1 -- --1 7 7 + + + + T - -�--- T --
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 94
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.12
9.24
13.00
2.41
0.21
0.83
14.00
2.56
0.26
0.54
15.00
2.66
0.30
0.45
16.00
2.75
0.33
0.36
17.00
2.81
0.36
0.33
18.00
2.87
0.38
0.30
19.00
2.93
0.40
0.26
20.00
2.97
0.42
0.22
21.00
3.01
0.44
0.21
22.00
3.05
0.45
0.21
23.00
3.08
0.47
0.20
24.00
3.12
0.48
0.20
25.00
3.12
0.48
0.00
26.00
3.12
0.48
0.00
27.00
3.12
0.48
0.00
28.00
3.12
0.48
0.00
29.00
3.12
0.48
0.00
30.00
3.12
0.48
0.00
31.00
3.12
0.48
0.00
32.00
3.12
0.48
0.00
33.00
3.12
0.48
0.00
34.00
3.12
0.48
0.00
35.00
3.12
0.48
0.00
36.00
3.12
0.48
0.00
37.00
3.12
0.48
0.00
38.00
3.12
0.48
0.00
39.00
3.12
0.48
0.00
40.00
3.12
0.48
0.00
41.00
3.12
0.48
0.00
42.00
3.12
0.48
0.00
43.00
3.12
0.48
0.00
44.00
3.12
0.48
0.00
45.00
3.12
0.48
0.00
46.00
3.12
0.48
0.00
47.00
3.12
0.48
0.00
48.00
3.12
0.48
0.00
49.00
3.12
0.48
0.00
50.00
3.12
0.48
0.00
51.00
3.12
0.48
0.00
52.00
3.12
0.48
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.48
0.00
54.00
3.12
0.48
0.00
55.00
3.12
0.48
0.00
56.00
3.12
0.48
0.00
57.00
3.12
0.48
0.00
58.00
3.12
0.48
0.00
59.00
3.12
0.48
0.00
60.00
3.12
0.48
0.00
61.00
3.12
0.48
0.00
62.00
3.12
0.48
0.00
63.00
3.12
0.48
0.00
64.00
3.12
0.48
0.00
65.00
3.12
0.48
0.00
66.00
3.12
0.48
0.00
67.00
3.12
0.48
0.00
68.00
3.12
0.48
0.00
69.00
3.12
0.48
0.00
70.00
3.12
0.48
0.00
71.00
3.12
0.48
0.00
72.00
3.12
0.48
0.00
73.00
3.12
0.48
0.00
74.00
3.12
0.48
0.00
75.00
3.12
0.48
0.00
76.00
3.12
0.48
0.00
77.00
3.12
0.48
0.00
78.00
3.12
0.48
0.00
79.00
3.12
0.48
0.00
80.00
3.12
0.48
0.00
81.00
3.12
0.48
0.00
82.00
3.12
0.48
0.00
83.00
3.12
0.48
0.00
84.00
3.12
0.48
0.00
85.00
3.12
0.48
0.00
86.00
3.12
0.48
0.00
87.00
3.12
0.48
0.00
88.00
3.12
0.48
0.00
89.00
3.12
0.48
0.00
90.00
3.12
0.48
0.00
91.00
3.12
0.48
0.00
92.00
3.12
0.48
0.00
93.00
3.12
0.48
0.00
94.00
3.12
0.48
0.00
95.00
3.12
0.48
0.00
96.00
3.12
0.48
0.00
97.00
3.12
0.48
0.00
98.00
3.12
0.48
0.00
99.00
3.12
0.48
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 95
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 23.37 cfs @ 11.96 hrs, Volume= 1.080 af, Depth= 1.34"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
26
zs
24
------------------------'
- - -'----- - - - - -'-- -'- - -'-- -'- - -'-- -'- - -'---'---' --
cfs -----�---�---�---�------- -------�---�---�-------�---r---�---r--
-- -- ------ --- -- ------ ------ ------ --------------
■Runoff
23.37
23
t'------r'-----tI---rI--+I------I------+I---I---rI----II---t ppI ch
22
21
- -r --
--'I
--
I Ii --i---
----r'-----
---'--- t---'---t -L 1r24hrRai nfaFf=3-.42
-------r------r------20 --
- -
19
18
- -- --
-- --
- ------------+------+------+ Rurtoff-Afea SX70-ad
----� -- ---- --
I ------I----I------I----- I I I I I 1
W�I �I
- 1---t--------100VI--1'0 016 ''f--
' -E�I
w 15
14
--r--
--
- ---
-r---r--r---r--r---r--t------t---I---r---I---r---I---------r--
r
--------------'---'---' '-------Rmaf# Dfh--C341'--
-r---1- ------Y---r--t------t - --- - --I - --r---r---I - --r --
3 13
a 12
r
---I--
II
--'---'----------'---'------------------------T-t---5. 0 In ill--
11
10
--r--
-- --
-- --
-r-r--r------r---r--t------t---r--r------r- - r - r--
-L---1---L---1---1---1---1--- ---1--- ---L------L----Ai�jY-
I I I �I
- ---I--- ---r-----I--- ------ --- --r------ ---I--
9
8
7
--L--
--r--
Trrr r I-
-L---1---L---1---1---1---1---'---1------L------L------L------L--
-r--- r-- r--- I - - -r ---i - --T---I---r---I---r---I---r---I---r---I---r--
6
5
i
--L--
--r--
-L---1---L---1---1---1---1---1---1------L------L------L------L--
I I I I I
-r--- r-- r--- rr - - -�-- T--- I - - -r ---I r---I---r---I---r---I---r--
4
--L--
-L---1---L---1---1---1---1---1---1------L------L------L------L--
2
--�--
1------I------�- I - --- --I - --- --------I------I------�--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 96
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.05
11.00
0.73
0.02
0.32
12.00
2.07
0.60
20.77
13.00
2.41
0.83
1.34
14.00
2.56
0.93
0.82
15.00
2.66
1.00
0.66
16.00
2.75
1.06
0.52
17.00
2.81
1.11
0.46
18.00
2.87
1.16
0.41
19.00
2.93
1.19
0.35
20.00
2.97
1.23
0.30
21.00
3.01
1.26
0.29
22.00
3.05
1.29
0.28
23.00
3.08
1.31
0.27
24.00
3.12
1.34
0.26
25.00
3.12
1.34
0.00
26.00
3.12
1.34
0.00
27.00
3.12
1.34
0.00
28.00
3.12
1.34
0.00
29.00
3.12
1.34
0.00
30.00
3.12
1.34
0.00
31.00
3.12
1.34
0.00
32.00
3.12
1.34
0.00
33.00
3.12
1.34
0.00
34.00
3.12
1.34
0.00
35.00
3.12
1.34
0.00
36.00
3.12
1.34
0.00
37.00
3.12
1.34
0.00
38.00
3.12
1.34
0.00
39.00
3.12
1.34
0.00
40.00
3.12
1.34
0.00
41.00
3.12
1.34
0.00
42.00
3.12
1.34
0.00
43.00
3.12
1.34
0.00
44.00
3.12
1.34
0.00
45.00
3.12
1.34
0.00
46.00
3.12
1.34
0.00
47.00
3.12
1.34
0.00
48.00
3.12
1.34
0.00
49.00
3.12
1.34
0.00
50.00
3.12
1.34
0.00
51.00
3.12
1.34
0.00
52.00
3.12
1.34
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
1.34
0.00
54.00
3.12
1.34
0.00
55.00
3.12
1.34
0.00
56.00
3.12
1.34
0.00
57.00
3.12
1.34
0.00
58.00
3.12
1.34
0.00
59.00
3.12
1.34
0.00
60.00
3.12
1.34
0.00
61.00
3.12
1.34
0.00
62.00
3.12
1.34
0.00
63.00
3.12
1.34
0.00
64.00
3.12
1.34
0.00
65.00
3.12
1.34
0.00
66.00
3.12
1.34
0.00
67.00
3.12
1.34
0.00
68.00
3.12
1.34
0.00
69.00
3.12
1.34
0.00
70.00
3.12
1.34
0.00
71.00
3.12
1.34
0.00
72.00
3.12
1.34
0.00
73.00
3.12
1.34
0.00
74.00
3.12
1.34
0.00
75.00
3.12
1.34
0.00
76.00
3.12
1.34
0.00
77.00
3.12
1.34
0.00
78.00
3.12
1.34
0.00
79.00
3.12
1.34
0.00
80.00
3.12
1.34
0.00
81.00
3.12
1.34
0.00
82.00
3.12
1.34
0.00
83.00
3.12
1.34
0.00
84.00
3.12
1.34
0.00
85.00
3.12
1.34
0.00
86.00
3.12
1.34
0.00
87.00
3.12
1.34
0.00
88.00
3.12
1.34
0.00
89.00
3.12
1.34
0.00
90.00
3.12
1.34
0.00
91.00
3.12
1.34
0.00
92.00
3.12
1.34
0.00
93.00
3.12
1.34
0.00
94.00
3.12
1.34
0.00
95.00
3.12
1.34
0.00
96.00
3.12
1.34
0.00
97.00
3.12
1.34
0.00
98.00
3.12
1.34
0.00
99.00
3.12
1.34
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 97
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 15.87 cfs @ 11.96 hrs, Volume= 0.734 af, Depth= 1.28"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
17 -�--- it ---I I I I
I I I
15.87 cfs - I --- - - - --- --I--- -I-- --I--- ---I-- -I-- --
16 I I I I I I I I I I I
--- ,------ ,- - -I---------T------7------r------type_0-2 =h''r-
15 --+-- -+------+------+------+------+------+------+------r------+--
14 --L-- ----'------1---1------L------T2 r24h-_R�flrtfa[1 3A2'�--
pl�� I� ,,II
13 ---'----'---'----------'---'-
--- - -'--- __Runoff A.e&96.00ad -
12
11 -- ---
T--- T--T- - - - -- ---cllf
w 10 --+---+---r--+---r--+---r--+------+ ---
I-
Rurn ffi Deipth=1;28f�-
L
LL 8 - - -I - - - - - - - - - - - - - - _TSs�aR
7
6 -N_7
r r
-- - - - - - -
s
--r-- -r---r--r---r--1---r--t---I---r---I---r---I---r---I---r---I---r--
4 --�-----------L-----L--+------+------+------+-----------�--
3 --�-- ---------1---1---'---L---'---L------L------L-----L------L--
2 1
-------------------- --------------------------------------
1 I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 98
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.01
11.00
0.73
0.01
0.19
12.00
2.07
0.56
14.17
13.00
2.41
0.78
0.92
14.00
2.56
0.88
0.57
15.00
2.66
0.95
0.46
16.00
2.75
1.01
0.36
17.00
2.81
1.05
0.32
18.00
2.87
1.10
0.28
19.00
2.93
1.13
0.25
20.00
2.97
1.17
0.21
21.00
3.01
1.20
0.20
22.00
3.05
1.22
0.19
23.00
3.08
1.25
0.19
24.00
3.12
1.28
0.18
25.00
3.12
1.28
0.00
26.00
3.12
1.28
0.00
27.00
3.12
1.28
0.00
28.00
3.12
1.28
0.00
29.00
3.12
1.28
0.00
30.00
3.12
1.28
0.00
31.00
3.12
1.28
0.00
32.00
3.12
1.28
0.00
33.00
3.12
1.28
0.00
34.00
3.12
1.28
0.00
35.00
3.12
1.28
0.00
36.00
3.12
1.28
0.00
37.00
3.12
1.28
0.00
38.00
3.12
1.28
0.00
39.00
3.12
1.28
0.00
40.00
3.12
1.28
0.00
41.00
3.12
1.28
0.00
42.00
3.12
1.28
0.00
43.00
3.12
1.28
0.00
44.00
3.12
1.28
0.00
45.00
3.12
1.28
0.00
46.00
3.12
1.28
0.00
47.00
3.12
1.28
0.00
48.00
3.12
1.28
0.00
49.00
3.12
1.28
0.00
50.00
3.12
1.28
0.00
51.00
3.12
1.28
0.00
52.00
3.12
1.28
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
1.28
0.00
54.00
3.12
1.28
0.00
55.00
3.12
1.28
0.00
56.00
3.12
1.28
0.00
57.00
3.12
1.28
0.00
58.00
3.12
1.28
0.00
59.00
3.12
1.28
0.00
60.00
3.12
1.28
0.00
61.00
3.12
1.28
0.00
62.00
3.12
1.28
0.00
63.00
3.12
1.28
0.00
64.00
3.12
1.28
0.00
65.00
3.12
1.28
0.00
66.00
3.12
1.28
0.00
67.00
3.12
1.28
0.00
68.00
3.12
1.28
0.00
69.00
3.12
1.28
0.00
70.00
3.12
1.28
0.00
71.00
3.12
1.28
0.00
72.00
3.12
1.28
0.00
73.00
3.12
1.28
0.00
74.00
3.12
1.28
0.00
75.00
3.12
1.28
0.00
76.00
3.12
1.28
0.00
77.00
3.12
1.28
0.00
78.00
3.12
1.28
0.00
79.00
3.12
1.28
0.00
80.00
3.12
1.28
0.00
81.00
3.12
1.28
0.00
82.00
3.12
1.28
0.00
83.00
3.12
1.28
0.00
84.00
3.12
1.28
0.00
85.00
3.12
1.28
0.00
86.00
3.12
1.28
0.00
87.00
3.12
1.28
0.00
88.00
3.12
1.28
0.00
89.00
3.12
1.28
0.00
90.00
3.12
1.28
0.00
91.00
3.12
1.28
0.00
92.00
3.12
1.28
0.00
93.00
3.12
1.28
0.00
94.00
3.12
1.28
0.00
95.00
3.12
1.28
0.00
96.00
3.12
1.28
0.00
97.00
3.12
1.28
0.00
98.00
3.12
1.28
0.00
99.00
3.12
1.28
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 99
Summary for Subcatchment 11S: Bypass #1
Runoff = 3.01 cfs @ 12.12 hrs, Volume= 0.261 af, Depth= 0.56"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
4.560
58 Woods/grass comb., Good, HSG B
1.020
98 Water Surface, HSG B
5.580
65 Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
16.9 Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
� � � � � � � � � � � � � � � � � � � ■Runoff
3.01 cfs------------+------}---I--- -----I------I---------+----
3 type 11 24-hr
2yr24hr Rainfall'=3.121'
Runoff Area=5.580 at
2
-- - --- -- Rur�6f Vru'm =Or-261 If
Runoff Depth'0!56"
LL
TcT16.9 min
1 I I I I I I I I I ILL
I I
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 100
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.15
1.56
13.00
2.41
0.26
0.46
14.00
2.56
0.32
0.28
15.00
2.66
0.36
0.22
16.00
2.75
0.39
0.18
17.00
2.81
0.42
0.16
18.00
2.87
0.45
0.14
19.00
2.93
0.47
0.13
20.00
2.97
0.49
0.11
21.00
3.01
0.51
0.10
22.00
3.05
0.53
0.10
23.00
3.08
0.55
0.10
24.00
3.12
0.56
0.09
25.00
3.12
0.56
0.00
26.00
3.12
0.56
0.00
27.00
3.12
0.56
0.00
28.00
3.12
0.56
0.00
29.00
3.12
0.56
0.00
30.00
3.12
0.56
0.00
31.00
3.12
0.56
0.00
32.00
3.12
0.56
0.00
33.00
3.12
0.56
0.00
34.00
3.12
0.56
0.00
35.00
3.12
0.56
0.00
36.00
3.12
0.56
0.00
37.00
3.12
0.56
0.00
38.00
3.12
0.56
0.00
39.00
3.12
0.56
0.00
40.00
3.12
0.56
0.00
41.00
3.12
0.56
0.00
42.00
3.12
0.56
0.00
43.00
3.12
0.56
0.00
44.00
3.12
0.56
0.00
45.00
3.12
0.56
0.00
46.00
3.12
0.56
0.00
47.00
3.12
0.56
0.00
48.00
3.12
0.56
0.00
49.00
3.12
0.56
0.00
50.00
3.12
0.56
0.00
51.00
3.12
0.56
0.00
52.00
3.12
0.56
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.56
0.00
54.00
3.12
0.56
0.00
55.00
3.12
0.56
0.00
56.00
3.12
0.56
0.00
57.00
3.12
0.56
0.00
58.00
3.12
0.56
0.00
59.00
3.12
0.56
0.00
60.00
3.12
0.56
0.00
61.00
3.12
0.56
0.00
62.00
3.12
0.56
0.00
63.00
3.12
0.56
0.00
64.00
3.12
0.56
0.00
65.00
3.12
0.56
0.00
66.00
3.12
0.56
0.00
67.00
3.12
0.56
0.00
68.00
3.12
0.56
0.00
69.00
3.12
0.56
0.00
70.00
3.12
0.56
0.00
71.00
3.12
0.56
0.00
72.00
3.12
0.56
0.00
73.00
3.12
0.56
0.00
74.00
3.12
0.56
0.00
75.00
3.12
0.56
0.00
76.00
3.12
0.56
0.00
77.00
3.12
0.56
0.00
78.00
3.12
0.56
0.00
79.00
3.12
0.56
0.00
80.00
3.12
0.56
0.00
81.00
3.12
0.56
0.00
82.00
3.12
0.56
0.00
83.00
3.12
0.56
0.00
84.00
3.12
0.56
0.00
85.00
3.12
0.56
0.00
86.00
3.12
0.56
0.00
87.00
3.12
0.56
0.00
88.00
3.12
0.56
0.00
89.00
3.12
0.56
0.00
90.00
3.12
0.56
0.00
91.00
3.12
0.56
0.00
92.00
3.12
0.56
0.00
93.00
3.12
0.56
0.00
94.00
3.12
0.56
0.00
95.00
3.12
0.56
0.00
96.00
3.12
0.56
0.00
97.00
3.12
0.56
0.00
98.00
3.12
0.56
0.00
99.00
3.12
0.56
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 101
Summary for Subcatchment 12S: Bypass #2
Runoff = 0.17 cfs @ 12.28 hrs, Volume= 0.030 af, Depth= 0.31"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
0.19
0.18
--rt---I---7--- I---r------r--I
- 0.17 cfs--I---r---I---r-----I---rt--T---r--,---I---rt--T---r---I---r--
-
---I---T--T---I---T---I---T--T---T
--- ---T---
4
---r--I--- r--7--- ---r------r--
--TyKP`
■Runoff
0.17
- I --I
--T-- T-
--
- r------r--T------T------r--T---I---
n ' w p
,�-�-"��Ir�--
0.16
0.15
-- ---T---
-T---T---I---
--- T---
r---I---
--- IT
r
- - T------T ---I-
- T- I- T-
- - - -
- - - T� N--
- 2r1� r1 Rai n#a tl 3 121
I--pr T I- T---I---TN--/T�---yr�--
0.14
--T--- T---
---T------IT-
-T------T---
p
--RFU toffTAAtwa 1:1-6aat--
0.13
0.12
I
-- ---T---11---T---11---T--T---11---T-
I
I
I I I
u of Vs lupn141031-Of -
w 0.11
U
0.1
-- --- T-- - 'I---
I I I
-_T-- -T----
------T--T------T---
I I
T - -
I
-- T
I I --- I - - - T -
T
De th1=0 31"--
--- TRa>r�a# -
- - I -- T _- --T----wT---
---T--
0 0.09
LL
-------------
-------
---------------------------
Tc,"2 F.9-M!h--
0.08
007
_ T -T I
-- - - - -
T I
I
- - - - - -
T--
- - - -
T I T
I T-_ T I T I � �
0.06
-- 7-- T
T
T--
T T
T -_ T T T T--
0.05
------ -I-
- -I - - -I
0.04
-_T-- ----r
T
--T T
T--T T T T--
0.03
-- --
-- --
0.02
-_ T-- -T
T
T--
7 T
T -- T T T T--
0.01
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 102
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.05
0.02
13.00
2.41
0.11
0.06
14.00
2.56
0.15
0.04
15.00
2.66
0.17
0.03
16.00
2.75
0.20
0.03
17.00
2.81
0.22
0.02
18.00
2.87
0.23
0.02
19.00
2.93
0.25
0.02
20.00
2.97
0.26
0.02
21.00
3.01
0.28
0.01
22.00
3.05
0.29
0.01
23.00
3.08
0.30
0.01
24.00
3.12
0.31
0.01
25.00
3.12
0.31
0.00
26.00
3.12
0.31
0.00
27.00
3.12
0.31
0.00
28.00
3.12
0.31
0.00
29.00
3.12
0.31
0.00
30.00
3.12
0.31
0.00
31.00
3.12
0.31
0.00
32.00
3.12
0.31
0.00
33.00
3.12
0.31
0.00
34.00
3.12
0.31
0.00
35.00
3.12
0.31
0.00
36.00
3.12
0.31
0.00
37.00
3.12
0.31
0.00
38.00
3.12
0.31
0.00
39.00
3.12
0.31
0.00
40.00
3.12
0.31
0.00
41.00
3.12
0.31
0.00
42.00
3.12
0.31
0.00
43.00
3.12
0.31
0.00
44.00
3.12
0.31
0.00
45.00
3.12
0.31
0.00
46.00
3.12
0.31
0.00
47.00
3.12
0.31
0.00
48.00
3.12
0.31
0.00
49.00
3.12
0.31
0.00
50.00
3.12
0.31
0.00
51.00
3.12
0.31
0.00
52.00
3.12
0.31
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.31
0.00
54.00
3.12
0.31
0.00
55.00
3.12
0.31
0.00
56.00
3.12
0.31
0.00
57.00
3.12
0.31
0.00
58.00
3.12
0.31
0.00
59.00
3.12
0.31
0.00
60.00
3.12
0.31
0.00
61.00
3.12
0.31
0.00
62.00
3.12
0.31
0.00
63.00
3.12
0.31
0.00
64.00
3.12
0.31
0.00
65.00
3.12
0.31
0.00
66.00
3.12
0.31
0.00
67.00
3.12
0.31
0.00
68.00
3.12
0.31
0.00
69.00
3.12
0.31
0.00
70.00
3.12
0.31
0.00
71.00
3.12
0.31
0.00
72.00
3.12
0.31
0.00
73.00
3.12
0.31
0.00
74.00
3.12
0.31
0.00
75.00
3.12
0.31
0.00
76.00
3.12
0.31
0.00
77.00
3.12
0.31
0.00
78.00
3.12
0.31
0.00
79.00
3.12
0.31
0.00
80.00
3.12
0.31
0.00
81.00
3.12
0.31
0.00
82.00
3.12
0.31
0.00
83.00
3.12
0.31
0.00
84.00
3.12
0.31
0.00
85.00
3.12
0.31
0.00
86.00
3.12
0.31
0.00
87.00
3.12
0.31
0.00
88.00
3.12
0.31
0.00
89.00
3.12
0.31
0.00
90.00
3.12
0.31
0.00
91.00
3.12
0.31
0.00
92.00
3.12
0.31
0.00
93.00
3.12
0.31
0.00
94.00
3.12
0.31
0.00
95.00
3.12
0.31
0.00
96.00
3.12
0.31
0.00
97.00
3.12
0.31
0.00
98.00
3.12
0.31
0.00
99.00
3.12
0.31
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 103
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 0.77 cfs @ 12.25 hrs, Volume= 0.172 af, Depth= 0.23"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
-- L------+---I--- L -- J---L -- L------+---�--- L -- L------+---�--- L---�---L --
■Runoff
0.8 0.77 cfs
0.75 - ----- ------ --------+------�__I--- --TXpe-11-2-4_-hr--
--+-- -+--+--------- +--4--- ---------+-----'+--
0.7 --L---1--- 1---L--- 1--- L--1------+---�
2yr24r- Rai n#aH=3Jiz1-�--
0.65
0.6 Runoff Aeea=9.070 at
0.55 J� `, �
--+---+---I---+---I---+--+------+-f -u off Volul 1=0r17'�-` f -
w0.5 --I'-- ------- ---------------+------- ---_
w 1 F�unof�e fh 0.�3�'--
0.45
LL 0.4 -- ---T------T--------T------T------�---T--- --- Tc,"2a.7-M!h--
0.35
--+------I---+------+--+------+------+--+------+------��I--
0.3
0.25
0.2
0.15 --+-- ---+-----+--+------+------+--+-----+--+---+-----+--
0.1
0.05
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 104
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.02
0.07
13.00
2.41
0.07
0.35
14.00
2.56
0.09
0.23
15.00
2.66
0.11
0.19
16.00
2.75
0.13
0.16
17.00
2.81
0.15
0.14
18.00
2.87
0.16
0.13
19.00
2.93
0.18
0.12
20.00
2.97
0.19
0.10
21.00
3.01
0.20
0.10
22.00
3.05
0.21
0.09
23.00
3.08
0.22
0.09
24.00
3.12
0.23
0.09
25.00
3.12
0.23
0.00
26.00
3.12
0.23
0.00
27.00
3.12
0.23
0.00
28.00
3.12
0.23
0.00
29.00
3.12
0.23
0.00
30.00
3.12
0.23
0.00
31.00
3.12
0.23
0.00
32.00
3.12
0.23
0.00
33.00
3.12
0.23
0.00
34.00
3.12
0.23
0.00
35.00
3.12
0.23
0.00
36.00
3.12
0.23
0.00
37.00
3.12
0.23
0.00
38.00
3.12
0.23
0.00
39.00
3.12
0.23
0.00
40.00
3.12
0.23
0.00
41.00
3.12
0.23
0.00
42.00
3.12
0.23
0.00
43.00
3.12
0.23
0.00
44.00
3.12
0.23
0.00
45.00
3.12
0.23
0.00
46.00
3.12
0.23
0.00
47.00
3.12
0.23
0.00
48.00
3.12
0.23
0.00
49.00
3.12
0.23
0.00
50.00
3.12
0.23
0.00
51.00
3.12
0.23
0.00
52.00
3.12
0.23
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.23
0.00
54.00
3.12
0.23
0.00
55.00
3.12
0.23
0.00
56.00
3.12
0.23
0.00
57.00
3.12
0.23
0.00
58.00
3.12
0.23
0.00
59.00
3.12
0.23
0.00
60.00
3.12
0.23
0.00
61.00
3.12
0.23
0.00
62.00
3.12
0.23
0.00
63.00
3.12
0.23
0.00
64.00
3.12
0.23
0.00
65.00
3.12
0.23
0.00
66.00
3.12
0.23
0.00
67.00
3.12
0.23
0.00
68.00
3.12
0.23
0.00
69.00
3.12
0.23
0.00
70.00
3.12
0.23
0.00
71.00
3.12
0.23
0.00
72.00
3.12
0.23
0.00
73.00
3.12
0.23
0.00
74.00
3.12
0.23
0.00
75.00
3.12
0.23
0.00
76.00
3.12
0.23
0.00
77.00
3.12
0.23
0.00
78.00
3.12
0.23
0.00
79.00
3.12
0.23
0.00
80.00
3.12
0.23
0.00
81.00
3.12
0.23
0.00
82.00
3.12
0.23
0.00
83.00
3.12
0.23
0.00
84.00
3.12
0.23
0.00
85.00
3.12
0.23
0.00
86.00
3.12
0.23
0.00
87.00
3.12
0.23
0.00
88.00
3.12
0.23
0.00
89.00
3.12
0.23
0.00
90.00
3.12
0.23
0.00
91.00
3.12
0.23
0.00
92.00
3.12
0.23
0.00
93.00
3.12
0.23
0.00
94.00
3.12
0.23
0.00
95.00
3.12
0.23
0.00
96.00
3.12
0.23
0.00
97.00
3.12
0.23
0.00
98.00
3.12
0.23
0.00
99.00
3.12
0.23
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 105
Summary for Subcatchment 14S: Post Development #3
Runoff = 0.76 cfs @ 12.25 hrs, Volume= 0.171 af, Depth= 0.23"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr24hr Rainfall=3.12"
Area (ac) CN
Description
8.670 55
Woods, Good, HSG B
0.320 58
Woods/grass comb., Good, HSG B
8.990 55
Weighted Average
8.990
100.00% Pervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
20.7
Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
0.85 -- ------ ------ ------ -- ------ ------ -- ------ ------ ------ -- Runoff
0.810.76 cfs
0.75 7--- T------T-- - I ---' T------T---I--- ,�-- ---Type1)-2-4-hr--
0.7 . ---T------.---li---'+-----li---+---'i2�1F�rli Rainfall -3�1�N--
yr2
0.65 --1-- -1---1---L---1---L--1---'---1---'---L--1------1---'---L---'---L--
0.6 --' ---'- -' nToff'Area= -990 at--
----- -----------------------
- ---7------r------r--+------rt--Rtu of VoluMne=0r17'1-pf-
0.5 --'---+------ ------ --------+------ --------+------ ------ --
0.45 _Runoff_ Depth=0.23�_
a0.4 --T-------,---,---,---,--T------T---,---,--T------Tc,2E}.�
0.35
--+------ ---+--+---+--+------+------+--+------+------ (L; -O--
0.3
0.25
----- ---------------------------------------------------------
0.2
--7-- -----r------r--+------T------r--I------7------T------r--
0.15 ----
0.1
0.05 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 106
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.03
0.00
0.00
2.00
0.07
0.00
0.00
3.00
0.11
0.00
0.00
4.00
0.15
0.00
0.00
5.00
0.20
0.00
0.00
6.00
0.25
0.00
0.00
7.00
0.31
0.00
0.00
8.00
0.37
0.00
0.00
9.00
0.46
0.00
0.00
10.00
0.56
0.00
0.00
11.00
0.73
0.00
0.00
12.00
2.07
0.02
0.07
13.00
2.41
0.07
0.34
14.00
2.56
0.09
0.23
15.00
2.66
0.11
0.19
16.00
2.75
0.13
0.16
17.00
2.81
0.15
0.14
18.00
2.87
0.16
0.13
19.00
2.93
0.18
0.12
20.00
2.97
0.19
0.10
21.00
3.01
0.20
0.09
22.00
3.05
0.21
0.09
23.00
3.08
0.22
0.09
24.00
3.12
0.23
0.09
25.00
3.12
0.23
0.00
26.00
3.12
0.23
0.00
27.00
3.12
0.23
0.00
28.00
3.12
0.23
0.00
29.00
3.12
0.23
0.00
30.00
3.12
0.23
0.00
31.00
3.12
0.23
0.00
32.00
3.12
0.23
0.00
33.00
3.12
0.23
0.00
34.00
3.12
0.23
0.00
35.00
3.12
0.23
0.00
36.00
3.12
0.23
0.00
37.00
3.12
0.23
0.00
38.00
3.12
0.23
0.00
39.00
3.12
0.23
0.00
40.00
3.12
0.23
0.00
41.00
3.12
0.23
0.00
42.00
3.12
0.23
0.00
43.00
3.12
0.23
0.00
44.00
3.12
0.23
0.00
45.00
3.12
0.23
0.00
46.00
3.12
0.23
0.00
47.00
3.12
0.23
0.00
48.00
3.12
0.23
0.00
49.00
3.12
0.23
0.00
50.00
3.12
0.23
0.00
51.00
3.12
0.23
0.00
52.00
3.12
0.23
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
3.12
0.23
0.00
54.00
3.12
0.23
0.00
55.00
3.12
0.23
0.00
56.00
3.12
0.23
0.00
57.00
3.12
0.23
0.00
58.00
3.12
0.23
0.00
59.00
3.12
0.23
0.00
60.00
3.12
0.23
0.00
61.00
3.12
0.23
0.00
62.00
3.12
0.23
0.00
63.00
3.12
0.23
0.00
64.00
3.12
0.23
0.00
65.00
3.12
0.23
0.00
66.00
3.12
0.23
0.00
67.00
3.12
0.23
0.00
68.00
3.12
0.23
0.00
69.00
3.12
0.23
0.00
70.00
3.12
0.23
0.00
71.00
3.12
0.23
0.00
72.00
3.12
0.23
0.00
73.00
3.12
0.23
0.00
74.00
3.12
0.23
0.00
75.00
3.12
0.23
0.00
76.00
3.12
0.23
0.00
77.00
3.12
0.23
0.00
78.00
3.12
0.23
0.00
79.00
3.12
0.23
0.00
80.00
3.12
0.23
0.00
81.00
3.12
0.23
0.00
82.00
3.12
0.23
0.00
83.00
3.12
0.23
0.00
84.00
3.12
0.23
0.00
85.00
3.12
0.23
0.00
86.00
3.12
0.23
0.00
87.00
3.12
0.23
0.00
88.00
3.12
0.23
0.00
89.00
3.12
0.23
0.00
90.00
3.12
0.23
0.00
91.00
3.12
0.23
0.00
92.00
3.12
0.23
0.00
93.00
3.12
0.23
0.00
94.00
3.12
0.23
0.00
95.00
3.12
0.23
0.00
96.00
3.12
0.23
0.00
97.00
3.12
0.23
0.00
98.00
3.12
0.23
0.00
99.00
3.12
0.23
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 107
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 0.48" for 2yr24hr event
Inflow =
9.49 cfs @
11.98 hrs, Volume=
0.524 of
Outflow =
0.08 cfs @
24.09 hrs, Volume=
0.435 af, Atten= 99%, Lag= 726.1 min
Primary =
0.08 cfs @
24.09 hrs, Volume=
0.435 of
Secondary =
0.00 cfs @
0.00 hrs, Volume=
0.000 of
Routing by Stor-Ind
method, Time Span= 0.00-99.00 hrs,
dt= 0.05 hrs
Peak Elev= 567.75'
@ 24.09 hrs
Surf.Area= 17,018 sf
Storage= 19,627 cf
Plug -Flow detention time= 2,173.3 min calculated for 0.435 of (83% of inflow)
Center -of -Mass det. time= 2,095.3 min ( 3,000.0 - 904.7 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.08 cfs @ 24.09 hrs HW=567.75' (Free Discharge)
L1=RCP_Round 36" (Passes 0.08 cfs of 69.63 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.08 cfs @ 5.23 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 108
N
U
3
0
LL
10
9-
8-
7-
6
5
Q
3
Hydrograph
---------- ---------r--r--r--r--r--r--r--r--7--7--
9.49 cfs
-- - - -- ----J--J--------------- ReL— LEl;ev=5 7�7vF-
QragI 19; -c, -
--T- -T--T--7--7--7------------------Ir--Ir--T--T--T--7--7--
--L--L--L--L--L-- ---1---1---1---1---1---L--L--L--L--L--1--L--
--r- -- --------------------- - -- - -i --i --il - -il -- -- -- --
0.08 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 109
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 110
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.00
0
566.50
0.00
0.00
0.00
12.50
1.24
8,016
567.04
0.05
0.05
0.00
15.00
0.45
13,406
567.38
0.07
0.07
0.00
17.50
0.31
16,039
567.54
0.07
0.07
0.00
20.00
0.22
17,765
567.64
0.08
0.08
0.00
22.50
0.21
18,965
567.71
0.08
0.08
0.00
25.00
0.00
19,368
567.74
0.08
0.08
0.00
27.50
0.00
18,637
567.69
0.08
0.08
0.00
30.00
0.00
17,920
567.65
0.08
0.08
0.00
32.50
0.00
17,218
567.61
0.08
0.08
0.00
35.00
0.00
16,529
567.57
0.08
0.08
0.00
37.50
0.00
15,854
567.53
0.07
0.07
0.00
40.00
0.00
15,193
567.49
0.07
0.07
0.00
42.50
0.00
14,546
567.45
0.07
0.07
0.00
45.00
0.00
13,914
567.41
0.07
0.07
0.00
47.50
0.00
13,296
567.37
0.07
0.07
0.00
50.00
0.00
12,692
567.33
0.07
0.07
0.00
52.50
0.00
12,102
567.30
0.06
0.06
0.00
55.00
0.00
11,527
567.26
0.06
0.06
0.00
57.50
0.00
10,967
567.23
0.06
0.06
0.00
60.00
0.00
10,421
567.19
0.06
0.06
0.00
62.50
0.00
9,890
567.16
0.06
0.06
0.00
65.00
0.00
9,373
567.13
0.06
0.06
0.00
67.50
0.00
8,872
567.09
0.05
0.05
0.00
70.00
0.00
8,385
567.06
0.05
0.05
0.00
72.50
0.00
7,913
567.03
0.05
0.05
0.00
75.00
0.00
7,455
567.00
0.05
0.05
0.00
77.50
0.00
7,013
566.98
0.05
0.05
0.00
80.00
0.00
6,586
566.95
0.05
0.05
0.00
82.50
0.00
6,175
566.92
0.04
0.04
0.00
85.00
0.00
5,778
566.90
0.04
0.04
0.00
87.50
0.00
5,397
566.87
0.04
0.04
0.00
90.00
0.00
5,031
566.85
0.04
0.04
0.00
92.50
0.00
4,681
566.82
0.04
0.04
0.00
95.00
0.00
4,346
566.80
0.04
0.04
0.00
97.50
0.00
4,028
566.78
0.03
0.03
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 111
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 112
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 113
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 1.34" for 2yr24hr event
Inflow =
23.37 cfs @
11.96 hrs,
Volume=
1.080 of
Outflow =
0.38 cfs @
18.45 hrs,
Volume=
1.068 af, Atten= 98%, Lag= 389.3 min
Primary =
0.38 cfs @
18.45 hrs,
Volume=
1.068 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 561.16' @ 18.45 hrs Surf.Area= 15,508 sf Storage= 34,082 cf
Plug -Flow detention time= 1,461.4 min calculated for 1.068 of (99% of inflow)
Center -of -Mass det. time= 1,456.4 min ( 2,296.2 - 839.8 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.38 cfs @ 18.45 hrs HW=561.16' (Free Discharge)
L1=RCP_Round 36" (Passes 0.38 cfs of 94.19 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.26 cfs @ 7.70 fps)
3=Custom Weir/Orifice (Weir Controls 0.12 cfs @ 1.09 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 114
--+--+--+--+--+--+--+------------------+--+--+--+--+--+--+--
Hydrograph
23.37 cfs -
--------------------,---;
--; --; --; --; -- -- -- --
■ Inflow
❑ Outflow
26
- -
- --
-- ----J--------'-
,y L
Ittflti�' At a�•6'■ v' aW
■Primary
■ Secondary
24
--r-
-t--t--rt--
----------------pe
rk Irv=5 1 16;'--
a - 6-
22
----
--}-
- --
-+--+--
--------------------
-- ----------------
------- -------------------
torte--34-092-Ff--
� 11
""
20
16
-L-
-1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1-
I---Ir--Ir--r--r-- r
w
V 14
--r-
-t--t--rt--
-----li---li---li---li---
------
LL-
10
1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1-
6
-L-
4
0.38 cfs
0.00
cfs
0
0
5 10
15 20 25 30
35 40 45 50 55 60
65 70 75 80 85 90 95
Time (hours)
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 115
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 116
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.00
0
558.50
0.00
0.00
0.00
10.00
0.05
42
558.50
0.00
0.00
0.00
12.50
2.09
25,139
560.56
0.23
0.23
0.00
15.00
0.66
32,214
561.04
0.26
0.26
0.00
17.50
0.43
33,987
561.15
0.37
0.37
0.00
20.00
0.30
33,885
561.15
0.37
0.37
0.00
22.50
0.27
33,380
561.12
0.32
0.32
0.00
25.00
0.00
32,232
561.04
0.26
0.26
0.00
27.50
0.00
29,962
560.89
0.25
0.25
0.00
30.00
0.00
27,766
560.74
0.24
0.24
0.00
32.50
0.00
25,644
560.60
0.23
0.23
0.00
35.00
0.00
23,597
560.45
0.22
0.22
0.00
37.50
0.00
21,629
560.31
0.21
0.21
0.00
40.00
0.00
19,739
560.17
0.21
0.21
0.00
42.50
0.00
17,931
560.04
0.20
0.20
0.00
45.00
0.00
16,204
559.90
0.19
0.19
0.00
47.50
0.00
14,562
559.78
0.18
0.18
0.00
50.00
0.00
13,005
559.65
0.17
0.17
0.00
52.50
0.00
11,536
559.54
0.16
0.16
0.00
55.00
0.00
10,156
559.42
0.15
0.15
0.00
57.50
0.00
8,866
559.31
0.14
0.14
0.00
60.00
0.00
7,668
559.21
0.13
0.13
0.00
62.50
0.00
6,565
559.12
0.12
0.12
0.00
65.00
0.00
5,556
559.03
0.11
0.11
0.00
67.50
0.00
4,644
558.95
0.10
0.10
0.00
70.00
0.00
3,831
558.87
0.08
0.08
0.00
72.50
0.00
3,119
558.81
0.07
0.07
0.00
75.00
0.00
2,509
558.75
0.06
0.06
0.00
77.50
0.00
2,003
558.70
0.05
0.05
0.00
80.00
0.00
1,605
558.66
0.04
0.04
0.00
82.50
0.00
1,310
558.63
0.03
0.03
0.00
85.00
0.00
1,090
558.61
0.02
0.02
0.00
87.50
0.00
921
558.59
0.02
0.02
0.00
90.00
0.00
793
558.58
0.01
0.01
0.00
92.50
0.00
695
558.57
0.01
0.01
0.00
95.00
0.00
619
558.56
0.01
0.01
0.00
97.50
0.00
554
558.56
0.01
0.01
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 117
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 118
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 119
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 1.28" for 2yr24hr event
Inflow =
15.87 cfs @
11.96 hrs,
Volume=
0.734 of
Outflow =
0.12 cfs @
24.05 hrs,
Volume=
0.629 af, Atten= 99%, Lag= 725.6 min
Primary =
0.12 cfs @
24.05 hrs,
Volume=
0.629 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 570.92' @ 24.05 hrs Surf.Area= 12,894 sf Storage= 27,123 cf
Plug -Flow detention time= 2,205.0 min calculated for 0.629 of (86% of inflow)
Center -of -Mass det. time= 2,137.0 min ( 2,980.1 - 843.1 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.12 cfs @ 24.05 hrs HW=570.92' (Free Discharge)
L1=RCP_Round 24" (Passes 0.12 cfs of 35.63 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.12 cfs @ 7.38 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 120
Pond 7P: BMP #3
Hydrograph
--L--L--1--1--J--J--J---1---1---1---1---1---L--L--L--L--1--1--J--
15.87 cfs
-1--1--J--J---------------'---
----L--L----i--7--
IrtHow A►re-9=6.900Y aC--
17
Fev=570 9Z--
16
ak-
15
--r-
--r-
-r--r--r--J--J---------r----��Tfr��-�--�--r--r
-T--T--
--
-----li---li---li---li--a3ClJIa
r--r--�}---7--
e-27,123-Ef -
14
13
--r-
- T
- -T-
-
--
-----------------
--r--r--r--r--T--7--7--
12
10
-1--1--7--J-----'---'------------7--L--L--L--1--1--1--
3-1--1--1--J--�---1---1---1---1---1---L--L--L--L--1--1--1--
0 8-
LL-
7
,'i
4
Z--r-
T--T--rt--y--y---li---li---li---li---Ir--Ir--Ir--r--r--+--7--7--
3
2
0.12
cfs
0.00
cfs
0
0 5 10
15 20
25
30
35
40
45 50 55 60
65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
MSecondary
— Total
❑ Primary
Secondary

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 121
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 122
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.00
0
568.50
0.00
0.00
0.00
10.00
0.01
5
568.50
0.00
0.00
0.00
12.50
1.44
16,968
570.10
0.09
0.09
0.00
15.00
0.46
22,473
570.55
0.11
0.11
0.00
17.50
0.30
24,729
570.73
0.11
0.11
0.00
20.00
0.21
26,009
570.83
0.11
0.11
0.00
22.50
0.19
26,752
570.89
0.12
0.12
0.00
25.00
0.00
26,748
570.89
0.12
0.12
0.00
27.50
0.00
25,717
570.81
0.11
0.11
0.00
30.00
0.00
24,704
570.73
0.11
0.11
0.00
32.50
0.00
23,710
570.65
0.11
0.11
0.00
35.00
0.00
22,734
570.57
0.11
0.11
0.00
37.50
0.00
21,777
570.50
0.11
0.11
0.00
40.00
0.00
20,838
570.42
0.10
0.10
0.00
42.50
0.00
19,919
570.34
0.10
0.10
0.00
45.00
0.00
19,019
570.27
0.10
0.10
0.00
47.50
0.00
18,139
570.20
0.10
0.10
0.00
50.00
0.00
17,278
570.12
0.09
0.09
0.00
52.50
0.00
16,437
570.05
0.09
0.09
0.00
55.00
0.00
15,616
569.98
0.09
0.09
0.00
57.50
0.00
14,815
569.91
0.09
0.09
0.00
60.00
0.00
14,034
569.84
0.09
0.09
0.00
62.50
0.00
13,274
569.78
0.08
0.08
0.00
65.00
0.00
12,534
569.71
0.08
0.08
0.00
67.50
0.00
11,815
569.65
0.08
0.08
0.00
70.00
0.00
11,117
569.58
0.08
0.08
0.00
72.50
0.00
10,440
569.52
0.07
0.07
0.00
75.00
0.00
9,784
569.46
0.07
0.07
0.00
77.50
0.00
9,149
569.41
0.07
0.07
0.00
80.00
0.00
8,536
569.35
0.07
0.07
0.00
82.50
0.00
7,944
569.29
0.06
0.06
0.00
85.00
0.00
7,375
569.24
0.06
0.06
0.00
87.50
0.00
6,827
569.19
0.06
0.06
0.00
90.00
0.00
6,301
569.14
0.06
0.06
0.00
92.50
0.00
5,797
569.09
0.05
0.05
0.00
95.00
0.00
5,316
569.04
0.05
0.05
0.00
97.50
0.00
4,857
569.00
0.05
0.05
0.00

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 123
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 124
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 125
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 0.98" for 2yr24hr event
Inflow = 0.26 cfs @ 12.28 hrs, Volume= 0.659 of
Primary = 0.26 cfs @ 12.28 hrs, Volume= 0.659 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
-----------r-----Ir--r--7---1i- r--r---li---li---r-----li---Ir--r---li--F Inflow
0.26 CfS ------ - --- --- - --- --- ------------- -- -- ❑ Primary
0.28 _ n
0.26 --r-Ir--r----- Ir--r--7--- 1i--- IrI 14F�Q li_Are Ora�I--
0.24
0.22 --t -r--r--r------r--r------r--r------r--r--r------r--r---I--
0.2 -- -i --i------i---i -----i---i --------i---i-----i---i -- ---i--
0.18
N
u 0.16 T - -- - - - - _- -T- ---
0 0.14
0.12
0.1
0.08
------+---------r--
0.06
0.04 --; ----_---r---I--
0.02
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 126
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.00
0.00
0.00
10.00
0.00
0.00
0.00
11.00
0.00
0.00
0.00
12.00
0.09
0.00
0.09
13.00
0.16
0.00
0.16
14.00
0.14
0.00
0.14
15.00
0.14
0.00
0.14
16.00
0.13
0.00
0.13
17.00
0.13
0.00
0.13
18.00
0.13
0.00
0.13
19.00
0.13
0.00
0.13
20.00
0.13
0.00
0.13
21.00
0.13
0.00
0.13
22.00
0.13
0.00
0.13
23.00
0.13
0.00
0.13
24.00
0.13
0.00
0.13
25.00
0.12
0.00
0.12
26.00
0.11
0.00
0.11
27.00
0.11
0.00
0.11
28.00
0.11
0.00
0.11
29.00
0.11
0.00
0.11
30.00
0.11
0.00
0.11
31.00
0.11
0.00
0.11
32.00
0.11
0.00
0.11
33.00
0.11
0.00
0.11
34.00
0.11
0.00
0.11
35.00
0.11
0.00
0.11
36.00
0.11
0.00
0.11
37.00
0.11
0.00
0.11
38.00
0.10
0.00
0.10
39.00
0.10
0.00
0.10
40.00
0.10
0.00
0.10
41.00
0.10
0.00
0.10
42.00
0.10
0.00
0.10
43.00
0.10
0.00
0.10
44.00
0.10
0.00
0.10
45.00
0.10
0.00
0.10
46.00
0.10
0.00
0.10
47.00
0.10
0.00
0.10
48.00
0.10
0.00
0.10
49.00
0.10
0.00
0.10
50.00
0.09
0.00
0.09
51.00
0.09
0.00
0.09
52.00
0.09
0.00
0.09
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.09
0.00
0.09
54.00
0.09
0.00
0.09
55.00
0.09
0.00
0.09
56.00
0.09
0.00
0.09
57.00
0.09
0.00
0.09
58.00
0.09
0.00
0.09
59.00
0.09
0.00
0.09
60.00
0.09
0.00
0.09
61.00
0.08
0.00
0.08
62.00
0.08
0.00
0.08
63.00
0.08
0.00
0.08
64.00
0.08
0.00
0.08
65.00
0.08
0.00
0.08
66.00
0.08
0.00
0.08
67.00
0.08
0.00
0.08
68.00
0.08
0.00
0.08
69.00
0.08
0.00
0.08
70.00
0.08
0.00
0.08
71.00
0.08
0.00
0.08
72.00
0.07
0.00
0.07
73.00
0.07
0.00
0.07
74.00
0.07
0.00
0.07
75.00
0.07
0.00
0.07
76.00
0.07
0.00
0.07
77.00
0.07
0.00
0.07
78.00
0.07
0.00
0.07
79.00
0.07
0.00
0.07
80.00
0.07
0.00
0.07
81.00
0.07
0.00
0.07
82.00
0.06
0.00
0.06
83.00
0.06
0.00
0.06
84.00
0.06
0.00
0.06
85.00
0.06
0.00
0.06
86.00
0.06
0.00
0.06
87.00
0.06
0.00
0.06
88.00
0.06
0.00
0.06
89.00
0.06
0.00
0.06
90.00
0.06
0.00
0.06
91.00
0.06
0.00
0.06
92.00
0.06
0.00
0.06
93.00
0.05
0.00
0.05
94.00
0.05
0.00
0.05
95.00
0.05
0.00
0.05
96.00
0.05
0.00
0.05
97.00
0.05
0.00
0.05
98.00
0.05
0.00
0.05
99.00
0.05
0.00
0.05

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 127
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61% Impervious, Inflow Depth > 0.75" for 2yr24hr event
Inflow = 3.26 cfs @ 12.12 hrs, Volume= 1.765 of
Primary = 3.26 cfs @ 12.12 hrs, Volume= 1.765 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 2yr24hr Rainfall=3.12"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 128
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.00
0.00
0.00
10.00
0.00
0.00
0.00
11.00
0.01
0.00
0.01
12.00
1.78
0.00
1.78
13.00
0.75
0.00
0.75
14.00
0.60
0.00
0.60
15.00
0.55
0.00
0.55
16.00
0.56
0.00
0.56
17.00
0.59
0.00
0.59
18.00
0.60
0.00
0.60
19.00
0.58
0.00
0.58
20.00
0.55
0.00
0.55
21.00
0.52
0.00
0.52
22.00
0.51
0.00
0.51
23.00
0.49
0.00
0.49
24.00
0.47
0.00
0.47
25.00
0.34
0.00
0.34
26.00
0.33
0.00
0.33
27.00
0.33
0.00
0.33
28.00
0.33
0.00
0.33
29.00
0.32
0.00
0.32
30.00
0.32
0.00
0.32
31.00
0.31
0.00
0.31
32.00
0.31
0.00
0.31
33.00
0.31
0.00
0.31
34.00
0.30
0.00
0.30
35.00
0.30
0.00
0.30
36.00
0.29
0.00
0.29
37.00
0.29
0.00
0.29
38.00
0.29
0.00
0.29
39.00
0.28
0.00
0.28
40.00
0.28
0.00
0.28
41.00
0.27
0.00
0.27
42.00
0.27
0.00
0.27
43.00
0.27
0.00
0.27
44.00
0.26
0.00
0.26
45.00
0.26
0.00
0.26
46.00
0.25
0.00
0.25
47.00
0.25
0.00
0.25
48.00
0.24
0.00
0.24
49.00
0.24
0.00
0.24
50.00
0.23
0.00
0.23
51.00
0.23
0.00
0.23
52.00
0.23
0.00
0.23
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.22
0.00
0.22
54.00
0.22
0.00
0.22
55.00
0.21
0.00
0.21
56.00
0.21
0.00
0.21
57.00
0.20
0.00
0.20
58.00
0.20
0.00
0.20
59.00
0.19
0.00
0.19
60.00
0.19
0.00
0.19
61.00
0.18
0.00
0.18
62.00
0.18
0.00
0.18
63.00
0.17
0.00
0.17
64.00
0.17
0.00
0.17
65.00
0.16
0.00
0.16
66.00
0.16
0.00
0.16
67.00
0.15
0.00
0.15
68.00
0.15
0.00
0.15
69.00
0.14
0.00
0.14
70.00
0.14
0.00
0.14
71.00
0.13
0.00
0.13
72.00
0.13
0.00
0.13
73.00
0.12
0.00
0.12
74.00
0.12
0.00
0.12
75.00
0.11
0.00
0.11
76.00
0.11
0.00
0.11
77.00
0.10
0.00
0.10
78.00
0.10
0.00
0.10
79.00
0.09
0.00
0.09
80.00
0.08
0.00
0.08
81.00
0.08
0.00
0.08
82.00
0.07
0.00
0.07
83.00
0.07
0.00
0.07
84.00
0.07
0.00
0.07
85.00
0.06
0.00
0.06
86.00
0.06
0.00
0.06
87.00
0.06
0.00
0.06
88.00
0.06
0.00
0.06
89.00
0.05
0.00
0.05
90.00
0.05
0.00
0.05
91.00
0.05
0.00
0.05
92.00
0.05
0.00
0.05
93.00
0.05
0.00
0.05
94.00
0.05
0.00
0.05
95.00
0.04
0.00
0.04
96.00
0.04
0.00
0.04
97.00
0.04
0.00
0.04
98.00
0.04
0.00
0.04
99.00
0.04
0.00
0.04

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 129
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=1.00"
Tc=21.7 min CN=57 Runoff=26.49 cfs 2.548 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=0.88"
Tc=24.9 min CN=55 Runoff=3.68 cfs 0.413 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=1.38"
Tc=5.0 min CN=63 Runoff=31.54 cfs 1.497 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=2.72"
Tc=5.0 min CN=80 Runoff=46.90 cfs 2.191 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=2.63"
Tc=5.0 min CN=79 Runoff=32.46 cfs 1.512 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=1.52"
Tc=16.9 min CN=65 Runoff=9.80 cfs 0.708 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=1.06"
Tc=24.9 min CN=58 Runoff=1.00 cfs 0.103 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=0.88"
Tc=20.7 min CN=55 Runoff=6.77 cfs 0.667 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=0.88"
Tc=20.7 min CN=55 Runoff=6.71 cfs 0.661 of
Pond 5P: BMP #1 Peak Elev=569.84' Storage=59,659 cf Inflow=31.54 cfs 1.497 of
Primary=0.14 cfs 0.857 of Secondary=0.00 cfs 0.000 of Outflow=0.14 cfs 0.857 of
Pond 6P: BMP #2 Peak Elev=562.13' Storage=50,107 cf Inflow=46.90 cfs 2.191 of
Primary=3.99 cfs 2.179 of Secondary=0.00 cfs 0.000 of Outflow=3.99 cfs 2.179 of
Pond 7P: BMP #3 Peak Elev=571.85' Storage=39,730 cf Inflow=32.46 cfs 1.512 of
Primary=1.34 cfs 1.351 of Secondary=0.00 cfs 0.000 of Outflow=1.34 cfs 1.351 of
Link 17L: Post Development#2 Inflow=1.58 cfs 1.453 of
Primary=1.58 cfs 1.453 of
Link 18L: Post Development#1
Inflow=13.12 cfs 3.744 of
Primary=13.12 cfs 3.744 of
Total Runoff Area = 90.560 ac Runoff Volume = 10.300 of Average Runoff Depth = 1.36"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 130
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 26.49 cfs @ 12.18 hrs, Volume= 2.548 af, Depth= 1.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
- - - - - I- - - - - -'I- - - - - -'I- - - t - - -'I- - - t - - -'I- - - t - - -'I- - - t - - -'I- - - t - - -'I - - - t - - -'I - - - t - - ■Runoff
28 26.49 cfs
26-_type(12-4-h!r -
I I I I I I I I I I I I I I I _I_I I
24 -' - --' - --' - --' - --'�0 r24hr-R�infa1�4.80" -
,- ,- - T- T
22 '
- - - - - - - - -I- - - Runoff Area=X.590 -ad- -
--------------
20
+---+--- --- +--- --- +--- +--- F�unoffVQium =2j 5480-
18
--'I-- - - - - --- - - - - --'I - - -'I ---- -'I - -- -----------------------------
16 J--1------1------1--- 1--- i--- Runoff �eptlx=1-!00''--
0 14 I��//►► rr�� JJ yy��
a -- - - ---r-----r--t---r--t--- ---t--- ---r--- --- Tv4 21.74nih--
12
-----------------�-------i-------i- _--------------------�---
10��
- - - - - - - - - - - - - - - - 7 - - - - - T - - --
6
q
--+-- ------+------+------+------+---+--+--+---+--+---+------+--
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 131
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.30
10.45
13.00
3.71
0.50
4.75
14.00
3.94
0.59
2.72
15.00
4.10
0.66
2.11
16.00
4.22
0.72
1.71
17.00
4.33
0.77
1.47
18.00
4.42
0.81
1.33
19.00
4.50
0.85
1.17
20.00
4.57
0.88
1.01
21.00
4.63
0.91
0.93
22.00
4.69
0.94
0.91
23.00
4.75
0.97
0.88
24.00
4.80
1.00
0.85
25.00
4.80
1.00
0.00
26.00
4.80
1.00
0.00
27.00
4.80
1.00
0.00
28.00
4.80
1.00
0.00
29.00
4.80
1.00
0.00
30.00
4.80
1.00
0.00
31.00
4.80
1.00
0.00
32.00
4.80
1.00
0.00
33.00
4.80
1.00
0.00
34.00
4.80
1.00
0.00
35.00
4.80
1.00
0.00
36.00
4.80
1.00
0.00
37.00
4.80
1.00
0.00
38.00
4.80
1.00
0.00
39.00
4.80
1.00
0.00
40.00
4.80
1.00
0.00
41.00
4.80
1.00
0.00
42.00
4.80
1.00
0.00
43.00
4.80
1.00
0.00
44.00
4.80
1.00
0.00
45.00
4.80
1.00
0.00
46.00
4.80
1.00
0.00
47.00
4.80
1.00
0.00
48.00
4.80
1.00
0.00
49.00
4.80
1.00
0.00
50.00
4.80
1.00
0.00
51.00
4.80
1.00
0.00
52.00
4.80
1.00
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
1.00
0.00
54.00
4.80
1.00
0.00
55.00
4.80
1.00
0.00
56.00
4.80
1.00
0.00
57.00
4.80
1.00
0.00
58.00
4.80
1.00
0.00
59.00
4.80
1.00
0.00
60.00
4.80
1.00
0.00
61.00
4.80
1.00
0.00
62.00
4.80
1.00
0.00
63.00
4.80
1.00
0.00
64.00
4.80
1.00
0.00
65.00
4.80
1.00
0.00
66.00
4.80
1.00
0.00
67.00
4.80
1.00
0.00
68.00
4.80
1.00
0.00
69.00
4.80
1.00
0.00
70.00
4.80
1.00
0.00
71.00
4.80
1.00
0.00
72.00
4.80
1.00
0.00
73.00
4.80
1.00
0.00
74.00
4.80
1.00
0.00
75.00
4.80
1.00
0.00
76.00
4.80
1.00
0.00
77.00
4.80
1.00
0.00
78.00
4.80
1.00
0.00
79.00
4.80
1.00
0.00
80.00
4.80
1.00
0.00
81.00
4.80
1.00
0.00
82.00
4.80
1.00
0.00
83.00
4.80
1.00
0.00
84.00
4.80
1.00
0.00
85.00
4.80
1.00
0.00
86.00
4.80
1.00
0.00
87.00
4.80
1.00
0.00
88.00
4.80
1.00
0.00
89.00
4.80
1.00
0.00
90.00
4.80
1.00
0.00
91.00
4.80
1.00
0.00
92.00
4.80
1.00
0.00
93.00
4.80
1.00
0.00
94.00
4.80
1.00
0.00
95.00
4.80
1.00
0.00
96.00
4.80
1.00
0.00
97.00
4.80
1.00
0.00
98.00
4.80
1.00
0.00
99.00
4.80
1.00
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 132
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 3.68 cfs @ 12.23 hrs, Volume= 0.413 af, Depth= 0.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
--r---r--r---r--r---i---r---i---r---i---r--r---r--r---r--r---r--r---i-
q ■Runoff
3.68 cfs
Type I'',I 24-h,r
-- -- -----'---10vr24hr_Rainfal[=4!80" 3-Runoff Area=5.620 at
Runoff Vp16mq=6 41,3 pf
w I I I I I I I I I I I I
-------------unof----T,DeftI_ .I
2 -�
-
TcT24.9 Min
RCN',=5$
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 133
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.25
0.97
13.00
3.71
0.42
0.84
14.00
3.94
0.50
0.47
15.00
4.10
0.57
0.36
16.00
4.22
0.62
0.29
17.00
4.33
0.67
0.25
18.00
4.42
0.71
0.23
19.00
4.50
0.74
0.20
20.00
4.57
0.77
0.17
21.00
4.63
0.80
0.16
22.00
4.69
0.83
0.16
23.00
4.75
0.86
0.15
24.00
4.80
0.88
0.15
25.00
4.80
0.88
0.00
26.00
4.80
0.88
0.00
27.00
4.80
0.88
0.00
28.00
4.80
0.88
0.00
29.00
4.80
0.88
0.00
30.00
4.80
0.88
0.00
31.00
4.80
0.88
0.00
32.00
4.80
0.88
0.00
33.00
4.80
0.88
0.00
34.00
4.80
0.88
0.00
35.00
4.80
0.88
0.00
36.00
4.80
0.88
0.00
37.00
4.80
0.88
0.00
38.00
4.80
0.88
0.00
39.00
4.80
0.88
0.00
40.00
4.80
0.88
0.00
41.00
4.80
0.88
0.00
42.00
4.80
0.88
0.00
43.00
4.80
0.88
0.00
44.00
4.80
0.88
0.00
45.00
4.80
0.88
0.00
46.00
4.80
0.88
0.00
47.00
4.80
0.88
0.00
48.00
4.80
0.88
0.00
49.00
4.80
0.88
0.00
50.00
4.80
0.88
0.00
51.00
4.80
0.88
0.00
52.00
4.80
0.88
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
0.88
0.00
54.00
4.80
0.88
0.00
55.00
4.80
0.88
0.00
56.00
4.80
0.88
0.00
57.00
4.80
0.88
0.00
58.00
4.80
0.88
0.00
59.00
4.80
0.88
0.00
60.00
4.80
0.88
0.00
61.00
4.80
0.88
0.00
62.00
4.80
0.88
0.00
63.00
4.80
0.88
0.00
64.00
4.80
0.88
0.00
65.00
4.80
0.88
0.00
66.00
4.80
0.88
0.00
67.00
4.80
0.88
0.00
68.00
4.80
0.88
0.00
69.00
4.80
0.88
0.00
70.00
4.80
0.88
0.00
71.00
4.80
0.88
0.00
72.00
4.80
0.88
0.00
73.00
4.80
0.88
0.00
74.00
4.80
0.88
0.00
75.00
4.80
0.88
0.00
76.00
4.80
0.88
0.00
77.00
4.80
0.88
0.00
78.00
4.80
0.88
0.00
79.00
4.80
0.88
0.00
80.00
4.80
0.88
0.00
81.00
4.80
0.88
0.00
82.00
4.80
0.88
0.00
83.00
4.80
0.88
0.00
84.00
4.80
0.88
0.00
85.00
4.80
0.88
0.00
86.00
4.80
0.88
0.00
87.00
4.80
0.88
0.00
88.00
4.80
0.88
0.00
89.00
4.80
0.88
0.00
90.00
4.80
0.88
0.00
91.00
4.80
0.88
0.00
92.00
4.80
0.88
0.00
93.00
4.80
0.88
0.00
94.00
4.80
0.88
0.00
95.00
4.80
0.88
0.00
96.00
4.80
0.88
0.00
97.00
4.80
0.88
0.00
98.00
4.80
0.88
0.00
99.00
4.80
0.88
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 134
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 31.54 cfs @ 11.97 hrs, Volume= 1.497 af, Depth= 1.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
--L---'------'--- ---'---L---'---L---'---L---I--- L--- I --- L--- '--- L--- '---L-
34
■ Runoff
31.54 cfs - --- --- --- --- --- --- --- --
32
30 hy
-- - ------ ------ ------ ------ ------ ------po 24mh
--r --- r---r-- r---r-- r--- r-- r---r--r---r--r---i- r--r---r---i---r--
28 ' ----- ----'------- '------- '---+---'--- 40 , r24hr-Raitifall=4,80"
26 -- -- ----I'------I'------I'----
--I'--- Run dff Ar6a='12.'980 at
24 1
22---'I---LI------ ---Fl�urltoff-Vrplmip=f 4�17-c
w 20 -- -- - ---r-- ---r-----r-- T-- - ---r- r
-- Runa#fDopth1-=1138f14
LL 16 --J---L---'---L---I11---L---'---L------1------L---
---L-TSs=
121 I
----- ------------------------------------------------------------
10
--r-- -r---r--r---r--r---r--r---i---r---r--r---i---r--r---r---i---r--
8 -------r-- ---r--+------+------r------r------r------r--
6 --�-- ---------1---1---'---L---'---L------L------L-----------L--
4
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 135
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.51
29.05
13.00
3.71
0.76
2.08
14.00
3.94
0.88
1.30
15.00
4.10
0.97
1.06
16.00
4.22
1.04
0.84
17.00
4.33
1.10
0.75
18.00
4.42
1.16
0.67
19.00
4.50
1.20
0.58
20.00
4.57
1.24
0.50
21.00
4.63
1.28
0.48
22.00
4.69
1.32
0.46
23.00
4.75
1.35
0.44
24.00
4.80
1.38
0.43
25.00
4.80
1.38
0.00
26.00
4.80
1.38
0.00
27.00
4.80
1.38
0.00
28.00
4.80
1.38
0.00
29.00
4.80
1.38
0.00
30.00
4.80
1.38
0.00
31.00
4.80
1.38
0.00
32.00
4.80
1.38
0.00
33.00
4.80
1.38
0.00
34.00
4.80
1.38
0.00
35.00
4.80
1.38
0.00
36.00
4.80
1.38
0.00
37.00
4.80
1.38
0.00
38.00
4.80
1.38
0.00
39.00
4.80
1.38
0.00
40.00
4.80
1.38
0.00
41.00
4.80
1.38
0.00
42.00
4.80
1.38
0.00
43.00
4.80
1.38
0.00
44.00
4.80
1.38
0.00
45.00
4.80
1.38
0.00
46.00
4.80
1.38
0.00
47.00
4.80
1.38
0.00
48.00
4.80
1.38
0.00
49.00
4.80
1.38
0.00
50.00
4.80
1.38
0.00
51.00
4.80
1.38
0.00
52.00
4.80
1.38
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
1.38
0.00
54.00
4.80
1.38
0.00
55.00
4.80
1.38
0.00
56.00
4.80
1.38
0.00
57.00
4.80
1.38
0.00
58.00
4.80
1.38
0.00
59.00
4.80
1.38
0.00
60.00
4.80
1.38
0.00
61.00
4.80
1.38
0.00
62.00
4.80
1.38
0.00
63.00
4.80
1.38
0.00
64.00
4.80
1.38
0.00
65.00
4.80
1.38
0.00
66.00
4.80
1.38
0.00
67.00
4.80
1.38
0.00
68.00
4.80
1.38
0.00
69.00
4.80
1.38
0.00
70.00
4.80
1.38
0.00
71.00
4.80
1.38
0.00
72.00
4.80
1.38
0.00
73.00
4.80
1.38
0.00
74.00
4.80
1.38
0.00
75.00
4.80
1.38
0.00
76.00
4.80
1.38
0.00
77.00
4.80
1.38
0.00
78.00
4.80
1.38
0.00
79.00
4.80
1.38
0.00
80.00
4.80
1.38
0.00
81.00
4.80
1.38
0.00
82.00
4.80
1.38
0.00
83.00
4.80
1.38
0.00
84.00
4.80
1.38
0.00
85.00
4.80
1.38
0.00
86.00
4.80
1.38
0.00
87.00
4.80
1.38
0.00
88.00
4.80
1.38
0.00
89.00
4.80
1.38
0.00
90.00
4.80
1.38
0.00
91.00
4.80
1.38
0.00
92.00
4.80
1.38
0.00
93.00
4.80
1.38
0.00
94.00
4.80
1.38
0.00
95.00
4.80
1.38
0.00
96.00
4.80
1.38
0.00
97.00
4.80
1.38
0.00
98.00
4.80
1.38
0.00
99.00
4.80
1.38
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 136
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 46.90 cfs @ 11.96 hrs, Volume= 2.191 af, Depth= 2.72"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
52
50
---,---,---,---,---,---,---,---,---,---,---,---------------------------,---
46.90
cfs ----- ------------+------+------ ------ ------ ------ --
■Runoff
48
--+--
--,------,------,------,---------=---,--- --------------
-+------+------+------+------+------+-------- -
I 24-hr
IIII
44
42
40
-----
-- --
---
-- -I- ---- -I- ---- -I- --
---- ----I - --I- -- ---I---1' -
-F
----'------'---+---'- +------ 40 , r24hrRainfatl=4.80`'--
38
36
-- --
--
- ------------+------+------+-I:ZAurtoff-Afea^9X70Aad--
- ---- --
34
32
--�--
- ------------rt------t------ KUrtWMQ=
w 30
28
--r--
--
-r---r--r---r--r---r--t------r---I---r------r---I---r------r--
------ ------ ------ ------ I-Ru-n ?f#D th=2:72" -
3 26
a 24
-- --
---'--
- ---
----Ir-- ---Ir--7---Ir--rt---Ir--7---Ir--r---I---r---r---I---r--
--'---'----------'---'------------------------�.0Irnfll--
- ----- ------ ------ ------r - --- ---- --r-
22
20
r
-- --
r-rrrrI- r I- r--
-L---1---L---1---1---1---1------1---I---L---I---L---- Aim-8jY-
I I I I I �I
16
--L--
-L------L---1---1---1---1------1------L------L------L------L--
I I I
14
12
i
--r--
--L--
-r---r--r---I---r---� --T---I---r---I---r---I---r---I---r---I---r--
-L------L---1---1------L------L---I---L------L------L------L--
I I I
10
8
i
--r--
--L--
-r---r--r---rr---�-- T---I---r---I r---I---r---I---r---I---r--
-L---1---L---1---1---1---1---1---1------L------L------L------L--
4
--�--
1------I------�- I - --- --I - --- --------I------I------�--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 137
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.05
9.00
0.71
0.02
0.20
10.00
0.87
0.05
0.42
11.00
1.13
0.13
1.13
12.00
3.18
1.39
40.71
13.00
3.71
1.80
2.45
14.00
3.94
1.99
1.48
15.00
4.10
2.12
1.19
16.00
4.22
2.23
0.92
17.00
4.33
2.32
0.82
18.00
4.42
2.39
0.72
19.00
4.50
2.46
0.63
20.00
4.57
2.52
0.53
21.00
4.63
2.57
0.50
22.00
4.69
2.62
0.48
23.00
4.75
2.67
0.47
24.00
4.80
2.72
0.45
25.00
4.80
2.72
0.00
26.00
4.80
2.72
0.00
27.00
4.80
2.72
0.00
28.00
4.80
2.72
0.00
29.00
4.80
2.72
0.00
30.00
4.80
2.72
0.00
31.00
4.80
2.72
0.00
32.00
4.80
2.72
0.00
33.00
4.80
2.72
0.00
34.00
4.80
2.72
0.00
35.00
4.80
2.72
0.00
36.00
4.80
2.72
0.00
37.00
4.80
2.72
0.00
38.00
4.80
2.72
0.00
39.00
4.80
2.72
0.00
40.00
4.80
2.72
0.00
41.00
4.80
2.72
0.00
42.00
4.80
2.72
0.00
43.00
4.80
2.72
0.00
44.00
4.80
2.72
0.00
45.00
4.80
2.72
0.00
46.00
4.80
2.72
0.00
47.00
4.80
2.72
0.00
48.00
4.80
2.72
0.00
49.00
4.80
2.72
0.00
50.00
4.80
2.72
0.00
51.00
4.80
2.72
0.00
52.00
4.80
2.72
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
2.72
0.00
54.00
4.80
2.72
0.00
55.00
4.80
2.72
0.00
56.00
4.80
2.72
0.00
57.00
4.80
2.72
0.00
58.00
4.80
2.72
0.00
59.00
4.80
2.72
0.00
60.00
4.80
2.72
0.00
61.00
4.80
2.72
0.00
62.00
4.80
2.72
0.00
63.00
4.80
2.72
0.00
64.00
4.80
2.72
0.00
65.00
4.80
2.72
0.00
66.00
4.80
2.72
0.00
67.00
4.80
2.72
0.00
68.00
4.80
2.72
0.00
69.00
4.80
2.72
0.00
70.00
4.80
2.72
0.00
71.00
4.80
2.72
0.00
72.00
4.80
2.72
0.00
73.00
4.80
2.72
0.00
74.00
4.80
2.72
0.00
75.00
4.80
2.72
0.00
76.00
4.80
2.72
0.00
77.00
4.80
2.72
0.00
78.00
4.80
2.72
0.00
79.00
4.80
2.72
0.00
80.00
4.80
2.72
0.00
81.00
4.80
2.72
0.00
82.00
4.80
2.72
0.00
83.00
4.80
2.72
0.00
84.00
4.80
2.72
0.00
85.00
4.80
2.72
0.00
86.00
4.80
2.72
0.00
87.00
4.80
2.72
0.00
88.00
4.80
2.72
0.00
89.00
4.80
2.72
0.00
90.00
4.80
2.72
0.00
91.00
4.80
2.72
0.00
92.00
4.80
2.72
0.00
93.00
4.80
2.72
0.00
94.00
4.80
2.72
0.00
95.00
4.80
2.72
0.00
96.00
4.80
2.72
0.00
97.00
4.80
2.72
0.00
98.00
4.80
2.72
0.00
99.00
4.80
2.72
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 138
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 32.46 cfs @ 11.96 hrs, Volume= 1.512 af, Depth= 2.63"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
36 -- --- -- --- -----1---1---1---+---'---+---'---L---'---L-- I - - - L------L--
■ Runoff
3432.46 cfs
32 T -----�---Type-0-24-hx - ---i-- -
i------i------Y------Y------Y----
30 ---,-- - ------ 4
------ ---I--- --- I-
28 -- 44C0yr24hr Rainfall=4:80'F-
26 -- -- ----'-------'-------'---+---'---+--R-urtoff-Atea�=8.1904 -at --
24 - -- - ------ ------------+ --- --- -- - -- - --
22 1------1------i------1---' I-urio=VQlUIMP= Lv'Cl2- f-
20 -- -- - - --- - --- + -- --- + -- --- + --- Rtunaf# Depth- 2.631'--
LL 16 -- -- - --- --- -- -- --- - --- T =3.0 Inlih
' - -- ------ 7-- T------T------r------T----r -r--
14 -- -- - ---li -----li---7---1i--T---li---T---li---r---li---r---li---CN�-7$-
12 --y-- - ---r-- ---r--rt---r--+------+------r------+------r------r--
10 --+-- -+---+--+---+--+---+--+---i---+---+--+---i---+--+---+---i---+--
--J-- ----'------1---1---1---+---'---+------L------L------L------L--
6 --J-- ----'------1---1---1---+---'---+------L------L------L------L--
4
-------------------- --------------------------------------
2 I I I I I I I I I I I I 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 139
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.02
9.00
0.71
0.01
0.12
10.00
0.87
0.04
0.27
11.00
1.13
0.11
0.74
12.00
3.18
1.32
28.26
13.00
3.71
1.73
1.72
14.00
3.94
1.91
1.04
15.00
4.10
2.04
0.83
16.00
4.22
2.15
0.65
17.00
4.33
2.23
0.57
18.00
4.42
2.31
0.51
19.00
4.50
2.38
0.44
20.00
4.57
2.43
0.37
21.00
4.63
2.49
0.35
22.00
4.69
2.54
0.34
23.00
4.75
2.58
0.33
24.00
4.80
2.63
0.31
25.00
4.80
2.63
0.00
26.00
4.80
2.63
0.00
27.00
4.80
2.63
0.00
28.00
4.80
2.63
0.00
29.00
4.80
2.63
0.00
30.00
4.80
2.63
0.00
31.00
4.80
2.63
0.00
32.00
4.80
2.63
0.00
33.00
4.80
2.63
0.00
34.00
4.80
2.63
0.00
35.00
4.80
2.63
0.00
36.00
4.80
2.63
0.00
37.00
4.80
2.63
0.00
38.00
4.80
2.63
0.00
39.00
4.80
2.63
0.00
40.00
4.80
2.63
0.00
41.00
4.80
2.63
0.00
42.00
4.80
2.63
0.00
43.00
4.80
2.63
0.00
44.00
4.80
2.63
0.00
45.00
4.80
2.63
0.00
46.00
4.80
2.63
0.00
47.00
4.80
2.63
0.00
48.00
4.80
2.63
0.00
49.00
4.80
2.63
0.00
50.00
4.80
2.63
0.00
51.00
4.80
2.63
0.00
52.00
4.80
2.63
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
2.63
0.00
54.00
4.80
2.63
0.00
55.00
4.80
2.63
0.00
56.00
4.80
2.63
0.00
57.00
4.80
2.63
0.00
58.00
4.80
2.63
0.00
59.00
4.80
2.63
0.00
60.00
4.80
2.63
0.00
61.00
4.80
2.63
0.00
62.00
4.80
2.63
0.00
63.00
4.80
2.63
0.00
64.00
4.80
2.63
0.00
65.00
4.80
2.63
0.00
66.00
4.80
2.63
0.00
67.00
4.80
2.63
0.00
68.00
4.80
2.63
0.00
69.00
4.80
2.63
0.00
70.00
4.80
2.63
0.00
71.00
4.80
2.63
0.00
72.00
4.80
2.63
0.00
73.00
4.80
2.63
0.00
74.00
4.80
2.63
0.00
75.00
4.80
2.63
0.00
76.00
4.80
2.63
0.00
77.00
4.80
2.63
0.00
78.00
4.80
2.63
0.00
79.00
4.80
2.63
0.00
80.00
4.80
2.63
0.00
81.00
4.80
2.63
0.00
82.00
4.80
2.63
0.00
83.00
4.80
2.63
0.00
84.00
4.80
2.63
0.00
85.00
4.80
2.63
0.00
86.00
4.80
2.63
0.00
87.00
4.80
2.63
0.00
88.00
4.80
2.63
0.00
89.00
4.80
2.63
0.00
90.00
4.80
2.63
0.00
91.00
4.80
2.63
0.00
92.00
4.80
2.63
0.00
93.00
4.80
2.63
0.00
94.00
4.80
2.63
0.00
95.00
4.80
2.63
0.00
96.00
4.80
2.63
0.00
97.00
4.80
2.63
0.00
98.00
4.80
2.63
0.00
99.00
4.80
2.63
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 140
Summary for Subcatchment 11S: Bypass #1
Runoff = 9.80 cfs @ 12.11 hrs, Volume= 0.708 af, Depth= 1.52"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
4.560
58 Woods/grass comb., Good, HSG B
1.020
98 Water Surface, HSG B
5.580
65 Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
16.9 Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
I I I I I I I I I I I I I I I I I I I ■Runoff
10 '
9.80 cfs-----1---III---i------1---III---i---III--- ---III--- -
--III---L --- III---L-
-- - ---I -- ---II--- ---I--T------T------r------pe-�I-2-4-hr_-
9 I I I I I I I I I I
---'I-- --'I-- --'I-- ---'I- --1110 r24hrRainfa11,=4.80"--
Runoff Aee&5.'1580 at
-t-- -
---t-----t--t---t--t---I---t---I---t---I---t---I---t---I---t
--
Runof VQIu'IImq=O'1.70'1,8 pf
-- I I I I I I I I I I I I I
Runoff DeIpthI I =1;52I I"
0 5 Tc�16.9 wnin
4
LL
---I-- - ---I, -- ---I--- ---I, -----I------I--- I, ---I--- I,---I---;CNI1,=6$ -
- - - - - 4 - - - I- - - 4 - - - - - - - - - I- - - t - - -3-
- ------ ------ ------ ------ ------ ------ ------ ------
2
1 I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 141
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.59
6.73
13.00
3.71
0.86
1.10
14.00
3.94
0.99
0.65
15.00
4.10
1.09
0.50
16.00
4.22
1.16
0.40
17.00
4.33
1.22
0.35
18.00
4.42
1.28
0.31
19.00
4.50
1.33
0.27
20.00
4.57
1.37
0.23
21.00
4.63
1.41
0.22
22.00
4.69
1.45
0.21
23.00
4.75
1.49
0.20
24.00
4.80
1.52
0.20
25.00
4.80
1.52
0.00
26.00
4.80
1.52
0.00
27.00
4.80
1.52
0.00
28.00
4.80
1.52
0.00
29.00
4.80
1.52
0.00
30.00
4.80
1.52
0.00
31.00
4.80
1.52
0.00
32.00
4.80
1.52
0.00
33.00
4.80
1.52
0.00
34.00
4.80
1.52
0.00
35.00
4.80
1.52
0.00
36.00
4.80
1.52
0.00
37.00
4.80
1.52
0.00
38.00
4.80
1.52
0.00
39.00
4.80
1.52
0.00
40.00
4.80
1.52
0.00
41.00
4.80
1.52
0.00
42.00
4.80
1.52
0.00
43.00
4.80
1.52
0.00
44.00
4.80
1.52
0.00
45.00
4.80
1.52
0.00
46.00
4.80
1.52
0.00
47.00
4.80
1.52
0.00
48.00
4.80
1.52
0.00
49.00
4.80
1.52
0.00
50.00
4.80
1.52
0.00
51.00
4.80
1.52
0.00
52.00
4.80
1.52
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
1.52
0.00
54.00
4.80
1.52
0.00
55.00
4.80
1.52
0.00
56.00
4.80
1.52
0.00
57.00
4.80
1.52
0.00
58.00
4.80
1.52
0.00
59.00
4.80
1.52
0.00
60.00
4.80
1.52
0.00
61.00
4.80
1.52
0.00
62.00
4.80
1.52
0.00
63.00
4.80
1.52
0.00
64.00
4.80
1.52
0.00
65.00
4.80
1.52
0.00
66.00
4.80
1.52
0.00
67.00
4.80
1.52
0.00
68.00
4.80
1.52
0.00
69.00
4.80
1.52
0.00
70.00
4.80
1.52
0.00
71.00
4.80
1.52
0.00
72.00
4.80
1.52
0.00
73.00
4.80
1.52
0.00
74.00
4.80
1.52
0.00
75.00
4.80
1.52
0.00
76.00
4.80
1.52
0.00
77.00
4.80
1.52
0.00
78.00
4.80
1.52
0.00
79.00
4.80
1.52
0.00
80.00
4.80
1.52
0.00
81.00
4.80
1.52
0.00
82.00
4.80
1.52
0.00
83.00
4.80
1.52
0.00
84.00
4.80
1.52
0.00
85.00
4.80
1.52
0.00
86.00
4.80
1.52
0.00
87.00
4.80
1.52
0.00
88.00
4.80
1.52
0.00
89.00
4.80
1.52
0.00
90.00
4.80
1.52
0.00
91.00
4.80
1.52
0.00
92.00
4.80
1.52
0.00
93.00
4.80
1.52
0.00
94.00
4.80
1.52
0.00
95.00
4.80
1.52
0.00
96.00
4.80
1.52
0.00
97.00
4.80
1.52
0.00
98.00
4.80
1.52
0.00
99.00
4.80
1.52
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 142
Summary for Subcatchment 12S: Bypass #2
Runoff = 1.00 cfs @ 12.22 hrs, Volume= 0.103 af, Depth= 1.06"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
1.00 cfs
Subcatchment 12S: Bypass #2
Hydrograph
� � � � � � � � � � � � � � � � ■Runoff
type I'',I 24-h,r
10yr24hr Rainfall 4!80
Run�off Area=1.160 at
Ruoff VQIu',m�=0r10',3 af
Runoff Depth111, 1 ! 06"
Tc,24.9 wnih
RCN',=5$
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 143
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.34
0.33
13.00
3.71
0.54
0.20
14.00
3.94
0.64
0.11
15.00
4.10
0.71
0.08
16.00
4.22
0.77
0.07
17.00
4.33
0.82
0.06
18.00
4.42
0.87
0.05
19.00
4.50
0.91
0.05
20.00
4.57
0.94
0.04
21.00
4.63
0.97
0.04
22.00
4.69
1.00
0.04
23.00
4.75
1.03
0.03
24.00
4.80
1.06
0.03
25.00
4.80
1.06
0.00
26.00
4.80
1.06
0.00
27.00
4.80
1.06
0.00
28.00
4.80
1.06
0.00
29.00
4.80
1.06
0.00
30.00
4.80
1.06
0.00
31.00
4.80
1.06
0.00
32.00
4.80
1.06
0.00
33.00
4.80
1.06
0.00
34.00
4.80
1.06
0.00
35.00
4.80
1.06
0.00
36.00
4.80
1.06
0.00
37.00
4.80
1.06
0.00
38.00
4.80
1.06
0.00
39.00
4.80
1.06
0.00
40.00
4.80
1.06
0.00
41.00
4.80
1.06
0.00
42.00
4.80
1.06
0.00
43.00
4.80
1.06
0.00
44.00
4.80
1.06
0.00
45.00
4.80
1.06
0.00
46.00
4.80
1.06
0.00
47.00
4.80
1.06
0.00
48.00
4.80
1.06
0.00
49.00
4.80
1.06
0.00
50.00
4.80
1.06
0.00
51.00
4.80
1.06
0.00
52.00
4.80
1.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
1.06
0.00
54.00
4.80
1.06
0.00
55.00
4.80
1.06
0.00
56.00
4.80
1.06
0.00
57.00
4.80
1.06
0.00
58.00
4.80
1.06
0.00
59.00
4.80
1.06
0.00
60.00
4.80
1.06
0.00
61.00
4.80
1.06
0.00
62.00
4.80
1.06
0.00
63.00
4.80
1.06
0.00
64.00
4.80
1.06
0.00
65.00
4.80
1.06
0.00
66.00
4.80
1.06
0.00
67.00
4.80
1.06
0.00
68.00
4.80
1.06
0.00
69.00
4.80
1.06
0.00
70.00
4.80
1.06
0.00
71.00
4.80
1.06
0.00
72.00
4.80
1.06
0.00
73.00
4.80
1.06
0.00
74.00
4.80
1.06
0.00
75.00
4.80
1.06
0.00
76.00
4.80
1.06
0.00
77.00
4.80
1.06
0.00
78.00
4.80
1.06
0.00
79.00
4.80
1.06
0.00
80.00
4.80
1.06
0.00
81.00
4.80
1.06
0.00
82.00
4.80
1.06
0.00
83.00
4.80
1.06
0.00
84.00
4.80
1.06
0.00
85.00
4.80
1.06
0.00
86.00
4.80
1.06
0.00
87.00
4.80
1.06
0.00
88.00
4.80
1.06
0.00
89.00
4.80
1.06
0.00
90.00
4.80
1.06
0.00
91.00
4.80
1.06
0.00
92.00
4.80
1.06
0.00
93.00
4.80
1.06
0.00
94.00
4.80
1.06
0.00
95.00
4.80
1.06
0.00
96.00
4.80
1.06
0.00
97.00
4.80
1.06
0.00
98.00
4.80
1.06
0.00
99.00
4.80
1.06
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 144
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 6.77 cfs @ 12.17 hrs, Volume= 0.667 af, Depth= 0.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
6.77 - -'- - - ■Runoff
r-I- r---I- r---I- r--r---i r---r r---r r---I--
7 cfs I I I
Type I�'II 24-hIr
6 10yr24hr Rainfall' 4.80''
- -- ----'I----
------------r--- --- _-Runoff Atea�=8:070-ab-
5 Runoff Vp16mq=6r6617 clf
Runoff Depth, 0.881
-J---1---1---1---'---------L---'--- J---'--- T_cr20_7 MIIh-
3
LL I I I I I I I I I I I I I I I
"I RCN'=5$
z 'I
1 I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 145
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.25
2.55
13.00
3.71
0.42
1.24
14.00
3.94
0.50
0.73
15.00
4.10
0.57
0.57
16.00
4.22
0.62
0.46
17.00
4.33
0.67
0.40
18.00
4.42
0.71
0.36
19.00
4.50
0.74
0.32
20.00
4.57
0.77
0.28
21.00
4.63
0.80
0.26
22.00
4.69
0.83
0.25
23.00
4.75
0.86
0.24
24.00
4.80
0.88
0.23
25.00
4.80
0.88
0.00
26.00
4.80
0.88
0.00
27.00
4.80
0.88
0.00
28.00
4.80
0.88
0.00
29.00
4.80
0.88
0.00
30.00
4.80
0.88
0.00
31.00
4.80
0.88
0.00
32.00
4.80
0.88
0.00
33.00
4.80
0.88
0.00
34.00
4.80
0.88
0.00
35.00
4.80
0.88
0.00
36.00
4.80
0.88
0.00
37.00
4.80
0.88
0.00
38.00
4.80
0.88
0.00
39.00
4.80
0.88
0.00
40.00
4.80
0.88
0.00
41.00
4.80
0.88
0.00
42.00
4.80
0.88
0.00
43.00
4.80
0.88
0.00
44.00
4.80
0.88
0.00
45.00
4.80
0.88
0.00
46.00
4.80
0.88
0.00
47.00
4.80
0.88
0.00
48.00
4.80
0.88
0.00
49.00
4.80
0.88
0.00
50.00
4.80
0.88
0.00
51.00
4.80
0.88
0.00
52.00
4.80
0.88
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
0.88
0.00
54.00
4.80
0.88
0.00
55.00
4.80
0.88
0.00
56.00
4.80
0.88
0.00
57.00
4.80
0.88
0.00
58.00
4.80
0.88
0.00
59.00
4.80
0.88
0.00
60.00
4.80
0.88
0.00
61.00
4.80
0.88
0.00
62.00
4.80
0.88
0.00
63.00
4.80
0.88
0.00
64.00
4.80
0.88
0.00
65.00
4.80
0.88
0.00
66.00
4.80
0.88
0.00
67.00
4.80
0.88
0.00
68.00
4.80
0.88
0.00
69.00
4.80
0.88
0.00
70.00
4.80
0.88
0.00
71.00
4.80
0.88
0.00
72.00
4.80
0.88
0.00
73.00
4.80
0.88
0.00
74.00
4.80
0.88
0.00
75.00
4.80
0.88
0.00
76.00
4.80
0.88
0.00
77.00
4.80
0.88
0.00
78.00
4.80
0.88
0.00
79.00
4.80
0.88
0.00
80.00
4.80
0.88
0.00
81.00
4.80
0.88
0.00
82.00
4.80
0.88
0.00
83.00
4.80
0.88
0.00
84.00
4.80
0.88
0.00
85.00
4.80
0.88
0.00
86.00
4.80
0.88
0.00
87.00
4.80
0.88
0.00
88.00
4.80
0.88
0.00
89.00
4.80
0.88
0.00
90.00
4.80
0.88
0.00
91.00
4.80
0.88
0.00
92.00
4.80
0.88
0.00
93.00
4.80
0.88
0.00
94.00
4.80
0.88
0.00
95.00
4.80
0.88
0.00
96.00
4.80
0.88
0.00
97.00
4.80
0.88
0.00
98.00
4.80
0.88
0.00
99.00
4.80
0.88
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 146
Summary for Subcatchment 14S: Post Development #3
Runoff = 6.71 cfs @ 12.17 hrs, Volume= 0.661 af, Depth= 0.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr24hr Rainfall=4.80"
Area (ac) CN Description
8.670
55 Woods, Good, HSG B
0.320
58 Woods/grass comb., Good, HSG B
8.990
55 Weighted Average
8.990
100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
I I I I I I I I I I I I I I I I -- �I------------ ■Runoff
7 6.71 cfs
Type II 24-hr
6 10yr24hr Rainfal[=4.80"
---'I---------T--- r--- - - -! -Runoff Ate&:8'990 ac
5
kunoff Vplu'Imp=Or66'11 clf
Runoff Depth'I, 0.881'
° --'�-00-7 tnih-
3 T2�ICN'I=5$
z 'I
1 I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 147
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.05
0.00
0.00
2.00
0.11
0.00
0.00
3.00
0.17
0.00
0.00
4.00
0.23
0.00
0.00
5.00
0.30
0.00
0.00
6.00
0.38
0.00
0.00
7.00
0.48
0.00
0.00
8.00
0.58
0.00
0.00
9.00
0.71
0.00
0.00
10.00
0.87
0.00
0.00
11.00
1.13
0.00
0.00
12.00
3.18
0.25
2.53
13.00
3.71
0.42
1.23
14.00
3.94
0.50
0.73
15.00
4.10
0.57
0.57
16.00
4.22
0.62
0.46
17.00
4.33
0.67
0.40
18.00
4.42
0.71
0.36
19.00
4.50
0.74
0.32
20.00
4.57
0.77
0.27
21.00
4.63
0.80
0.25
22.00
4.69
0.83
0.25
23.00
4.75
0.86
0.24
24.00
4.80
0.88
0.23
25.00
4.80
0.88
0.00
26.00
4.80
0.88
0.00
27.00
4.80
0.88
0.00
28.00
4.80
0.88
0.00
29.00
4.80
0.88
0.00
30.00
4.80
0.88
0.00
31.00
4.80
0.88
0.00
32.00
4.80
0.88
0.00
33.00
4.80
0.88
0.00
34.00
4.80
0.88
0.00
35.00
4.80
0.88
0.00
36.00
4.80
0.88
0.00
37.00
4.80
0.88
0.00
38.00
4.80
0.88
0.00
39.00
4.80
0.88
0.00
40.00
4.80
0.88
0.00
41.00
4.80
0.88
0.00
42.00
4.80
0.88
0.00
43.00
4.80
0.88
0.00
44.00
4.80
0.88
0.00
45.00
4.80
0.88
0.00
46.00
4.80
0.88
0.00
47.00
4.80
0.88
0.00
48.00
4.80
0.88
0.00
49.00
4.80
0.88
0.00
50.00
4.80
0.88
0.00
51.00
4.80
0.88
0.00
52.00
4.80
0.88
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
4.80
0.88
0.00
54.00
4.80
0.88
0.00
55.00
4.80
0.88
0.00
56.00
4.80
0.88
0.00
57.00
4.80
0.88
0.00
58.00
4.80
0.88
0.00
59.00
4.80
0.88
0.00
60.00
4.80
0.88
0.00
61.00
4.80
0.88
0.00
62.00
4.80
0.88
0.00
63.00
4.80
0.88
0.00
64.00
4.80
0.88
0.00
65.00
4.80
0.88
0.00
66.00
4.80
0.88
0.00
67.00
4.80
0.88
0.00
68.00
4.80
0.88
0.00
69.00
4.80
0.88
0.00
70.00
4.80
0.88
0.00
71.00
4.80
0.88
0.00
72.00
4.80
0.88
0.00
73.00
4.80
0.88
0.00
74.00
4.80
0.88
0.00
75.00
4.80
0.88
0.00
76.00
4.80
0.88
0.00
77.00
4.80
0.88
0.00
78.00
4.80
0.88
0.00
79.00
4.80
0.88
0.00
80.00
4.80
0.88
0.00
81.00
4.80
0.88
0.00
82.00
4.80
0.88
0.00
83.00
4.80
0.88
0.00
84.00
4.80
0.88
0.00
85.00
4.80
0.88
0.00
86.00
4.80
0.88
0.00
87.00
4.80
0.88
0.00
88.00
4.80
0.88
0.00
89.00
4.80
0.88
0.00
90.00
4.80
0.88
0.00
91.00
4.80
0.88
0.00
92.00
4.80
0.88
0.00
93.00
4.80
0.88
0.00
94.00
4.80
0.88
0.00
95.00
4.80
0.88
0.00
96.00
4.80
0.88
0.00
97.00
4.80
0.88
0.00
98.00
4.80
0.88
0.00
99.00
4.80
0.88
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 148
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 1.38" for 10yr24hr event
Inflow =
31.54 cfs @
11.97 hrs,
Volume=
1.497 of
Outflow =
0.14 cfs @
24.10 hrs,
Volume=
0.857 af, Atten= 100%, Lag= 728.0 min
Primary =
0.14 cfs @
24.10 hrs,
Volume=
0.857 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 569.84' @ 24.10 hrs Surf.Area= 21,277 sf Storage= 59,659 cf
Plug -Flow detention time= 2,471.3 min calculated for 0.857 of (57% of inflow)
Center -of -Mass det. time= 2,336.7 min ( 3,201.8 - 865.0 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.14 cfs @ 24.10 hrs HW=569.84' (Free Discharge)
L1=RCP_Round 36" (Passes 0.14 cfs of 86.47 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.14 cfs @ 8.71 fps)
3=Custom Weir/Orifice ( Controls 0.00 cfs)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 149
Pond 5P: BMP #1
Hydrograph
' -
31.54 cfs
-+--
--
--
---------------r--r--r--r--r--+--
-- --
--r-
-----------
111flow �Arrea#'12.J8a ae--
--
34
--r-
-T--T-----
-------------------
Pe;ak EIevL5�9�8 '--
30
--T-
--, -
- T --T
--, --
--
-, --
--1
-,---,---,---,---,----
--
---------------r
--r
-----rage- •+3V++•f-k.1--
$bt
28
26
,i
24
1-
-
r r
22
-
- --
--
--
--
---------
-- --- --- ------- - -- - -- -- -- --
w 20
-L-
-1--1--1--J--
-1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1--
---1---1---1---1---1---L--L--L--L--1--1--1--
" 18
_ 16
'
LL14
-- -
-+--+--
--
--
------------------
-- -- -- -- -- -- --
12
10
Z Z--+-
+--+--+--+--+---------------r--r--r--r--r--+--+--+--
6
4
0.14 cfs
1 [Bill %/MOMO
.0:0 •0
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 150
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 151
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.00
0
566.50
0.00
0.00
0.00
12.50
3.19
30,665
568.38
0.10
0.10
0.00
15.00
1.06
44,216
569.09
0.12
0.12
0.00
17.50
0.71
50,664
569.41
0.13
0.13
0.00
20.00
0.50
54,927
569.62
0.13
0.13
0.00
22.50
0.45
57,963
569.76
0.14
0.14
0.00
25.00
0.00
59,229
569.82
0.14
0.14
0.00
27.50
0.00
58,003
569.77
0.14
0.14
0.00
30.00
0.00
56,787
569.71
0.13
0.13
0.00
32.50
0.00
55,583
569.65
0.13
0.13
0.00
35.00
0.00
54,389
569.59
0.13
0.13
0.00
37.50
0.00
53,207
569.54
0.13
0.13
0.00
40.00
0.00
52,036
569.48
0.13
0.13
0.00
42.50
0.00
50,877
569.42
0.13
0.13
0.00
45.00
0.00
49,729
569.37
0.13
0.13
0.00
47.50
0.00
48,593
569.31
0.13
0.13
0.00
50.00
0.00
47,468
569.25
0.12
0.12
0.00
52.50
0.00
46,355
569.20
0.12
0.12
0.00
55.00
0.00
45,253
569.14
0.12
0.12
0.00
57.50
0.00
44,163
569.09
0.12
0.12
0.00
60.00
0.00
43,085
569.03
0.12
0.12
0.00
62.50
0.00
42,019
568.98
0.12
0.12
0.00
65.00
0.00
40,965
568.92
0.12
0.12
0.00
67.50
0.00
39,923
568.87
0.12
0.12
0.00
70.00
0.00
38,894
568.82
0.11
0.11
0.00
72.50
0.00
37,876
568.76
0.11
0.11
0.00
75.00
0.00
36,870
568.71
0.11
0.11
0.00
77.50
0.00
35,877
568.66
0.11
0.11
0.00
80.00
0.00
34,897
568.61
0.11
0.11
0.00
82.50
0.00
33,928
568.55
0.11
0.11
0.00
85.00
0.00
32,973
568.50
0.11
0.11
0.00
87.50
0.00
32,030
568.45
0.10
0.10
0.00
90.00
0.00
31,099
568.40
0.10
0.10
0.00
92.50
0.00
30,181
568.35
0.10
0.10
0.00
95.00
0.00
29,276
568.30
0.10
0.10
0.00
97.50
0.00
28,384
568.25
0.10
0.10
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 152
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 153
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 154
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 2.72" for 10yr24hr event
Inflow = 46.90 cfs @ 11.96 hrs, Volume= 2.191 of
Outflow = 3.99 cfs @ 12.49 hrs, Volume= 2.179 af, Atten= 91 %, Lag= 31.9 min
Primary = 3.99 cfs @ 12.49 hrs, Volume= 2.179 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 562.13' @ 12.49 hrs Surf.Area= 17,531 sf Storage= 50,107 cf
Plug -Flow detention time= 806.3 min calculated for 2.179 of (99% of inflow)
Center -of -Mass det. time= 802.8 min ( 1,622.3 - 819.5 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=3.99 cfs @ 12.49 hrs HW=562.13' (Free Discharge)
L1=RCP_Round 36" (Passes 3.99 cfs of 102.67 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.31 cfs @ 9.04 fps)
3=Custom Weir/Orifice (Weir Controls 3.68 cfs @ 3.40 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 155
Pond 6P: BMP #2
Hydrograph
46.90 cfs
50 p --r--r--r--r--r--r------------------r----r--r----r--r�--
S
e 5 3�
a
45 -- - - -- -- -- -------------------- -- -- -- -- -- -- --
Starage_"_50,10.7 c_ f_
40 - -- - - - - - - - - - - - - - -
35 --, - - -- --------------------------- -- - -- I -- I -- -- -- --
N
30 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0 25 -- - - -- -- -- -------------------- -- -- -- -- -- -- --
LL
20 - - - - - - - - - - - - - - - -
15 -- - - li -- li -- li------------------i---i --i --i --i --i --r-- li -- li --
10 3.99 cfs ,
0.00 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 156
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 157
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.01
4
558.50
0.00
0.00
0.00
10.00
0.42
1,473
558.65
0.03
0.03
0.00
12.50
3.88
50,105
562.13
3.99
3.99
0.00
15.00
1.19
41,851
561.65
1.79
1.79
0.00
17.50
0.77
38,188
561.42
1.02
1.02
0.00
20.00
0.53
36,410
561.31
0.70
0.70
0.00
22.50
0.48
35,384
561.24
0.55
0.55
0.00
25.00
0.00
33,664
561.13
0.34
0.34
0.00
27.50
0.00
31,209
560.97
0.25
0.25
0.00
30.00
0.00
28,971
560.82
0.24
0.24
0.00
32.50
0.00
26,808
560.68
0.24
0.24
0.00
35.00
0.00
24,719
560.53
0.23
0.23
0.00
37.50
0.00
22,708
560.39
0.22
0.22
0.00
40.00
0.00
20,774
560.25
0.21
0.21
0.00
42.50
0.00
18,921
560.11
0.20
0.20
0.00
45.00
0.00
17,149
559.98
0.19
0.19
0.00
47.50
0.00
15,460
559.85
0.18
0.18
0.00
50.00
0.00
13,855
559.72
0.17
0.17
0.00
52.50
0.00
12,338
559.60
0.16
0.16
0.00
55.00
0.00
10,908
559.48
0.15
0.15
0.00
57.50
0.00
9,568
559.37
0.14
0.14
0.00
60.00
0.00
8,319
559.27
0.13
0.13
0.00
62.50
0.00
7,163
559.17
0.12
0.12
0.00
65.00
0.00
6,102
559.08
0.11
0.11
0.00
67.50
0.00
5,136
558.99
0.10
0.10
0.00
70.00
0.00
4,268
558.91
0.09
0.09
0.00
72.50
0.00
3,500
558.84
0.08
0.08
0.00
75.00
0.00
2,834
558.78
0.07
0.07
0.00
77.50
0.00
2,271
558.72
0.06
0.06
0.00
80.00
0.00
1,810
558.68
0.04
0.04
0.00
82.50
0.00
1,462
558.65
0.03
0.03
0.00
85.00
0.00
1,204
558.62
0.02
0.02
0.00
87.50
0.00
1,009
558.60
0.02
0.02
0.00
90.00
0.00
860
558.59
0.01
0.01
0.00
92.50
0.00
746
558.58
0.01
0.01
0.00
95.00
0.00
659
558.57
0.01
0.01
0.00
97.50
0.00
589
558.56
0.01
0.01
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 158
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 159
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 160
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 2.63" for 10yr24hr event
Inflow = 32.46 cfs @ 11.96 hrs, Volume= 1.512 of
Outflow = 1.34 cfs @ 13.46 hrs, Volume= 1.351 af, Atten= 96%, Lag= 90.3 min
Primary = 1.34 cfs @ 13.46 hrs, Volume= 1.351 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 571.85' @ 13.46 hrs Surf.Area= 14,211 sf Storage= 39,730 cf
Plug -Flow detention time= 1,297.8 min calculated for 1.350 of (89% of inflow)
Center -of -Mass det. time= 1,245.7 min ( 2,068.0 - 822.2 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=1.34 cfs @ 13.46 hrs HW=571.85' (Free Discharge)
L1=RCP_Round 24" (Passes 1.34 cfs of 39.63 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.14 cfs @ 8.72 fps)
3=Custom Weir/Orifice (Weir Controls 1.20 cfs @ 2.64 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 161
Pond 7P: BMP #3
Hydrograph
-- ----+--+--
32.46 cfs
--
--------------------
------------------
--r-
-T--T--
-t--rt--�--�---'i---'i---'i---'i---Ir--Ir--Ir--r--r--r--rt--rt--
--
------------Iftf]OW'Area=6.9�00,c
--
36
34
,'
--,--
-
--
--
---,---,
------------------
-'-`------------------
32
-
-
-
- - - -
-
30
----
-1------------------------
Stoir-ap-,39,730-d -
28
26
'
24
'
22
--r-
1
-r
1
--r
1
--r
--r
--r---------r--r--r--r--r--r--r--r--r--r--
w20
--r-
- T--T
--
--
--------------i---r
--r--r--r--r--T-- -- --
i° 16
----
-
--
--
---------------------I
--I --I--------T-- -- --
14
12
-L-
-L--L--L--L--
---1---1---1---1---1---L--L--L--L--L--1--L--
10
'
8
--+-
+--+--+--+--+---------------r--r--r--r--r--+--+--+--
cfs
6 1.34
4
0.00 cfs
0
0
5 10
15 20
25
30
35
40
45 50 55 60
65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 162
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 163
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.00
0
568.50
0.00
0.00
0.00
10.00
0.27
851
568.59
0.01
0.01
0.00
12.50
2.71
37,751
571.71
0.97
0.97
0.00
15.00
0.83
38,485
571.76
1.10
1.10
0.00
17.50
0.54
36,282
571.60
0.72
0.72
0.00
20.00
0.37
34,881
571.50
0.51
0.51
0.00
22.50
0.33
34,011
571.44
0.40
0.40
0.00
25.00
0.00
32,703
571.34
0.25
0.25
0.00
27.50
0.00
31,091
571.22
0.13
0.13
0.00
30.00
0.00
29,977
571.14
0.12
0.12
0.00
32.50
0.00
28,891
571.06
0.12
0.12
0.00
35.00
0.00
27,823
570.97
0.12
0.12
0.00
37.50
0.00
26,773
570.89
0.12
0.12
0.00
40.00
0.00
25,741
570.81
0.11
0.11
0.00
42.50
0.00
24,728
570.73
0.11
0.11
0.00
45.00
0.00
23,733
570.65
0.11
0.11
0.00
47.50
0.00
22,757
570.58
0.11
0.11
0.00
50.00
0.00
21,799
570.50
0.11
0.11
0.00
52.50
0.00
20,860
570.42
0.10
0.10
0.00
55.00
0.00
19,941
570.35
0.10
0.10
0.00
57.50
0.00
19,041
570.27
0.10
0.10
0.00
60.00
0.00
18,160
570.20
0.10
0.10
0.00
62.50
0.00
17,298
570.12
0.09
0.09
0.00
65.00
0.00
16,457
570.05
0.09
0.09
0.00
67.50
0.00
15,635
569.98
0.09
0.09
0.00
70.00
0.00
14,834
569.91
0.09
0.09
0.00
72.50
0.00
14,053
569.85
0.09
0.09
0.00
75.00
0.00
13,292
569.78
0.08
0.08
0.00
77.50
0.00
12,552
569.71
0.08
0.08
0.00
80.00
0.00
11,832
569.65
0.08
0.08
0.00
82.50
0.00
11,133
569.59
0.08
0.08
0.00
85.00
0.00
10,456
569.52
0.07
0.07
0.00
87.50
0.00
9,799
569.47
0.07
0.07
0.00
90.00
0.00
9,164
569.41
0.07
0.07
0.00
92.50
0.00
8,550
569.35
0.07
0.07
0.00
95.00
0.00
7,958
569.30
0.06
0.06
0.00
97.50
0.00
7,388
569.24
0.06
0.06
0.00

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 164
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 165
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 166
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 2.16" for 10yr24hr event
Inflow = 1.58 cfs @ 12.30 hrs, Volume= 1.453 of
Primary = 1.58 cfs @ 12.30 hrs, Volume= 1.453 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
Inflow
❑ Primary
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 167
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.00
0.00
0.00
10.00
0.01
0.00
0.01
11.00
0.03
0.00
0.03
12.00
0.44
0.00
0.44
13.00
1.48
0.00
1.48
14.00
1.40
0.00
1.40
15.00
1.19
0.00
1.19
16.00
0.99
0.00
0.99
17.00
0.84
0.00
0.84
18.00
0.73
0.00
0.73
19.00
0.64
0.00
0.64
20.00
0.55
0.00
0.55
21.00
0.49
0.00
0.49
22.00
0.45
0.00
0.45
23.00
0.42
0.00
0.42
24.00
0.40
0.00
0.40
25.00
0.25
0.00
0.25
26.00
0.18
0.00
0.18
27.00
0.15
0.00
0.15
28.00
0.13
0.00
0.13
29.00
0.12
0.00
0.12
30.00
0.12
0.00
0.12
31.00
0.12
0.00
0.12
32.00
0.12
0.00
0.12
33.00
0.12
0.00
0.12
34.00
0.12
0.00
0.12
35.00
0.12
0.00
0.12
36.00
0.12
0.00
0.12
37.00
0.12
0.00
0.12
38.00
0.12
0.00
0.12
39.00
0.11
0.00
0.11
40.00
0.11
0.00
0.11
41.00
0.11
0.00
0.11
42.00
0.11
0.00
0.11
43.00
0.11
0.00
0.11
44.00
0.11
0.00
0.11
45.00
0.11
0.00
0.11
46.00
0.11
0.00
0.11
47.00
0.11
0.00
0.11
48.00
0.11
0.00
0.11
49.00
0.11
0.00
0.11
50.00
0.11
0.00
0.11
51.00
0.10
0.00
0.10
52.00
0.10
0.00
0.10
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.10
0.00
0.10
54.00
0.10
0.00
0.10
55.00
0.10
0.00
0.10
56.00
0.10
0.00
0.10
57.00
0.10
0.00
0.10
58.00
0.10
0.00
0.10
59.00
0.10
0.00
0.10
60.00
0.10
0.00
0.10
61.00
0.10
0.00
0.10
62.00
0.10
0.00
0.10
63.00
0.09
0.00
0.09
64.00
0.09
0.00
0.09
65.00
0.09
0.00
0.09
66.00
0.09
0.00
0.09
67.00
0.09
0.00
0.09
68.00
0.09
0.00
0.09
69.00
0.09
0.00
0.09
70.00
0.09
0.00
0.09
71.00
0.09
0.00
0.09
72.00
0.09
0.00
0.09
73.00
0.09
0.00
0.09
74.00
0.08
0.00
0.08
75.00
0.08
0.00
0.08
76.00
0.08
0.00
0.08
77.00
0.08
0.00
0.08
78.00
0.08
0.00
0.08
79.00
0.08
0.00
0.08
80.00
0.08
0.00
0.08
81.00
0.08
0.00
0.08
82.00
0.08
0.00
0.08
83.00
0.08
0.00
0.08
84.00
0.08
0.00
0.08
85.00
0.07
0.00
0.07
86.00
0.07
0.00
0.07
87.00
0.07
0.00
0.07
88.00
0.07
0.00
0.07
89.00
0.07
0.00
0.07
90.00
0.07
0.00
0.07
91.00
0.07
0.00
0.07
92.00
0.07
0.00
0.07
93.00
0.07
0.00
0.07
94.00
0.07
0.00
0.07
95.00
0.06
0.00
0.06
96.00
0.06
0.00
0.06
97.00
0.06
0.00
0.06
98.00
0.06
0.00
0.06
99.00
0.06
0.00
0.06

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 168
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61% Impervious, Inflow Depth > 1.59" for 10yr24hr event
Inflow = 13.12 cfs @ 12.12 hrs, Volume= 3.744 of
Primary = 13.12 cfs @ 12.12 hrs, Volume= 3.744 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
----- ��---��--- �--- ��---��--- ��---��---��--- ��---��---�--- ��---��---�--- �,---�,-- ■Inflow
- ------ --------+---------+--------+------ -- ----- ❑Primary
-T--T------T--T------T-- - ---II -_T------T--T---
---T--T---II--
- L -- T---II--- L -- J---II--- L----- - II - -- L-- -II--- L -- T-- -II - -- L -- T---II--
7-- T, T -- T - -- F T --
- L -- T---II - -- L -- J---II--- L----- - II - -- L---II - -- L -- T---II - -- L -- T---II--
-r--t---I_--t--t---I_--t------I_--t---I---r--t---I---r-- -
--I--
-r--t---r--t--t---r--t------r--t---
---r--t------r--t---I--
--L---II--- I--L---II--- I---II---T-- I---II---I--L---II---I--L---II--
60 65 70 75 :0 85 •0 95

Millbridge Phase 7E Type/1 24-hr 10yr24hr Rainfall=4.80"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 169
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.01
0.00
0.01
10.00
0.03
0.00
0.03
11.00
0.09
0.00
0.09
12.00
8.04
0.00
8.04
13.00
4.76
0.00
4.76
14.00
3.25
0.00
3.25
15.00
2.42
0.00
2.42
16.00
1.90
0.00
1.90
17.00
1.58
0.00
1.58
18.00
1.38
0.00
1.38
19.00
1.21
0.00
1.21
20.00
1.07
0.00
1.07
21.00
0.97
0.00
0.97
22.00
0.91
0.00
0.91
23.00
0.87
0.00
0.87
24.00
0.83
0.00
0.83
25.00
0.48
0.00
0.48
26.00
0.40
0.00
0.40
27.00
0.39
0.00
0.39
28.00
0.39
0.00
0.39
29.00
0.38
0.00
0.38
30.00
0.38
0.00
0.38
31.00
0.38
0.00
0.38
32.00
0.37
0.00
0.37
33.00
0.37
0.00
0.37
34.00
0.36
0.00
0.36
35.00
0.36
0.00
0.36
36.00
0.36
0.00
0.36
37.00
0.35
0.00
0.35
38.00
0.35
0.00
0.35
39.00
0.34
0.00
0.34
40.00
0.34
0.00
0.34
41.00
0.34
0.00
0.34
42.00
0.33
0.00
0.33
43.00
0.33
0.00
0.33
44.00
0.32
0.00
0.32
45.00
0.32
0.00
0.32
46.00
0.32
0.00
0.32
47.00
0.31
0.00
0.31
48.00
0.31
0.00
0.31
49.00
0.30
0.00
0.30
50.00
0.30
0.00
0.30
51.00
0.29
0.00
0.29
52.00
0.29
0.00
0.29
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.28
0.00
0.28
54.00
0.28
0.00
0.28
55.00
0.28
0.00
0.28
56.00
0.27
0.00
0.27
57.00
0.27
0.00
0.27
58.00
0.26
0.00
0.26
59.00
0.26
0.00
0.26
60.00
0.25
0.00
0.25
61.00
0.25
0.00
0.25
62.00
0.24
0.00
0.24
63.00
0.24
0.00
0.24
64.00
0.23
0.00
0.23
65.00
0.23
0.00
0.23
66.00
0.22
0.00
0.22
67.00
0.22
0.00
0.22
68.00
0.21
0.00
0.21
69.00
0.21
0.00
0.21
70.00
0.20
0.00
0.20
71.00
0.20
0.00
0.20
72.00
0.19
0.00
0.19
73.00
0.19
0.00
0.19
74.00
0.18
0.00
0.18
75.00
0.18
0.00
0.18
76.00
0.17
0.00
0.17
77.00
0.17
0.00
0.17
78.00
0.16
0.00
0.16
79.00
0.16
0.00
0.16
80.00
0.15
0.00
0.15
81.00
0.15
0.00
0.15
82.00
0.14
0.00
0.14
83.00
0.14
0.00
0.14
84.00
0.13
0.00
0.13
85.00
0.13
0.00
0.13
86.00
0.13
0.00
0.13
87.00
0.12
0.00
0.12
88.00
0.12
0.00
0.12
89.00
0.12
0.00
0.12
90.00
0.12
0.00
0.12
91.00
0.12
0.00
0.12
92.00
0.11
0.00
0.11
93.00
0.11
0.00
0.11
94.00
0.11
0.00
0.11
95.00
0.11
0.00
0.11
96.00
0.11
0.00
0.11
97.00
0.11
0.00
0.11
98.00
0.11
0.00
0.11
99.00
0.10
0.00
0.10

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 170
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=1.53"
Tc=21.7 min CN=57 Runoff=44.55 cfs 3.906 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=1.38"
Tc=24.9 min CN=55 Runoff=6.50 cfs 0.647 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=2.01"
Tc=5.0 min CN=63 Runoff=46.68 cfs 2.175 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=3.57"
Tc=5.0 min CN=80 Runoff=60.89 cfs 2.873 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=3.47"
Tc=5.0 min CN=79 Runoff=42.39 cfs 1.993 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=2.18"
Tc=16.9 min CN=65 Runoff=14.42 cfs 1.013 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=1.61"
Tc=24.9 min CN=58 Runoff=1.64 cfs 0.156 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=1.38"
Tc=20.7 min CN=55 Runoff=11.88 cfs 1.044 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=1.38"
Tc=20.7 min CN=55 Runoff=11.77 cfs 1.035 of
Pond 5P: BMP #1 Peak EIev=570.31' Storage=69,856 cf Inflow=46.68 cfs 2.175 of
Primary=0.96 cfs 1.418 of Secondary=0.00 cfs 0.000 of Outflow=0.96 cfs 1.418 of
Pond 6P: BMP #2 Peak EIev=562.61' Storage=58,734 cf Inflow=60.89 cfs 2.873 of
Primary=19.54 cfs 2.860 of Secondary=0.00 cfs 0.000 of Outflow=19.54 cfs 2.860 of
Pond 7P: BMP #3 Peak EIev=572.40' Storage=47,757 cf Inflow=42.39 cfs 1.993 of
Primary=3.16 cfs 1.829 of Secondary=0.00 cfs 0.000 of Outflow=3.16 cfs 1.829 of
Link 17L: Post Development#2 Inflow=4.46 cfs 1.984 of
Primary=4.46 cfs 1.984 of
Link 18L: Post Development#1
Inflow=34.02 cfs 5.291 of
Primary=34.02 cfs 5.291 of
Total Runoff Area = 90.560 ac Runoff Volume = 14.842 of Average Runoff Depth = 1.97"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 171
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 44.55 cfs @ 12.17 hrs, Volume= 3.906 af, Depth= 1.53"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
48
46
L - - - - - - L - - - - - - L - - - - - - r - - -I-
cfs ----------L------L------L------------------L------L--
■Runoff
-
44.55
--+---
44
-+------+------+------r------+---r--r--- ---'TyI''e., �1 1
26=yr=-�Or-F�,ainfaij=S,76i
38
36
---,-
----,------,------,--- ---,- --
-Runbff�Area�30 590 ac-
34
32
'
--L-
--�-
-� 7 T T r r- I - --r r--
- ------ ------ ------------lftnoff VDIUmt=1906 e-
30
w 28
U
.... 26
i
--r-
----
--+-
-r---r--r---r--r---r--r---r--r---r--r---i---r--r---r---i---r--
- ------ ------ ------ ------ L---I--Rtun'off Dre 0=1M"--
-+---r--+---r--+---r--+---i---+---r--+---i---+---ice-�}-fir -i --r--
0 24
LL 22
----
- --- -- ------ --- -- ------ ------------}�c-L'1.7'M1�-
r-- r-----r--+------+---r--+---i---+ -i- -r- -i- -
18
==1=
=1------1---'---i------1------1------L------1------C:?�=51--
14
-- -
-L---1---L---'---L---'---L---'---L------L------L------L------L--
i
10
8
--L--
--+--
L---'---L---'---L---'---L---'---L------L------L-----L------L--
+---r--+---r--+---r--+---i---+---r--+---i---+---i---r---i---r--
6
---�--
---�------�------�---T - - -�

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 172
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.00
0.00
12.00
3.82
0.54
21.30
13.00
4.45
0.82
6.93
14.00
4.72
0.96
3.90
15.00
4.92
1.06
2.99
16.00
5.07
1.14
2.41
17.00
5.19
1.21
2.07
18.00
5.30
1.27
1.86
19.00
5.40
1.32
1.63
20.00
5.48
1.37
1.40
21.00
5.56
1.41
1.29
22.00
5.63
1.45
1.25
23.00
5.70
1.49
1.21
24.00
5.76
1.53
1.17
25.00
5.76
1.53
0.00
26.00
5.76
1.53
0.00
27.00
5.76
1.53
0.00
28.00
5.76
1.53
0.00
29.00
5.76
1.53
0.00
30.00
5.76
1.53
0.00
31.00
5.76
1.53
0.00
32.00
5.76
1.53
0.00
33.00
5.76
1.53
0.00
34.00
5.76
1.53
0.00
35.00
5.76
1.53
0.00
36.00
5.76
1.53
0.00
37.00
5.76
1.53
0.00
38.00
5.76
1.53
0.00
39.00
5.76
1.53
0.00
40.00
5.76
1.53
0.00
41.00
5.76
1.53
0.00
42.00
5.76
1.53
0.00
43.00
5.76
1.53
0.00
44.00
5.76
1.53
0.00
45.00
5.76
1.53
0.00
46.00
5.76
1.53
0.00
47.00
5.76
1.53
0.00
48.00
5.76
1.53
0.00
49.00
5.76
1.53
0.00
50.00
5.76
1.53
0.00
51.00
5.76
1.53
0.00
52.00
5.76
1.53
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
1.53
0.00
54.00
5.76
1.53
0.00
55.00
5.76
1.53
0.00
56.00
5.76
1.53
0.00
57.00
5.76
1.53
0.00
58.00
5.76
1.53
0.00
59.00
5.76
1.53
0.00
60.00
5.76
1.53
0.00
61.00
5.76
1.53
0.00
62.00
5.76
1.53
0.00
63.00
5.76
1.53
0.00
64.00
5.76
1.53
0.00
65.00
5.76
1.53
0.00
66.00
5.76
1.53
0.00
67.00
5.76
1.53
0.00
68.00
5.76
1.53
0.00
69.00
5.76
1.53
0.00
70.00
5.76
1.53
0.00
71.00
5.76
1.53
0.00
72.00
5.76
1.53
0.00
73.00
5.76
1.53
0.00
74.00
5.76
1.53
0.00
75.00
5.76
1.53
0.00
76.00
5.76
1.53
0.00
77.00
5.76
1.53
0.00
78.00
5.76
1.53
0.00
79.00
5.76
1.53
0.00
80.00
5.76
1.53
0.00
81.00
5.76
1.53
0.00
82.00
5.76
1.53
0.00
83.00
5.76
1.53
0.00
84.00
5.76
1.53
0.00
85.00
5.76
1.53
0.00
86.00
5.76
1.53
0.00
87.00
5.76
1.53
0.00
88.00
5.76
1.53
0.00
89.00
5.76
1.53
0.00
90.00
5.76
1.53
0.00
91.00
5.76
1.53
0.00
92.00
5.76
1.53
0.00
93.00
5.76
1.53
0.00
94.00
5.76
1.53
0.00
95.00
5.76
1.53
0.00
96.00
5.76
1.53
0.00
97.00
5.76
1.53
0.00
98.00
5.76
1.53
0.00
99.00
5.76
1.53
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 173
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 6.50 cfs @ 12.22 hrs, Volume= 0.647 af, Depth= 1.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
-- - 1---1------1------L------L------L--1--- ---J--- ---1--- ---1---�-
7 ■Runoff
6.50 cfs
6 �5-yr -'; 24hr kaipfa�l=$.76�„
----- ----------- ------- ---r------r----R-PnoffArev-$ 628aq-
5 1
R,unpff Vol,um,e=0.647 of
--J--J---1---1------L------L---I---L--J------J 11 --- I-- L --- I--
-- --
U 4 RuMof Depth=1,.381„
TC=24 mile
----------------------------------------------
CN=55
-- -------rt---I----
-----r----
--r-----I--- ------rt------t---I--
2
--J- J---1---1------L------L------L--J------J------1------L---�--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 174
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.00
0.00
12.00
3.82
0.46
2.32
13.00
4.45
0.72
1.27
14.00
4.72
0.85
0.68
15.00
4.92
0.94
0.52
16.00
5.07
1.01
0.42
17.00
5.19
1.08
0.36
18.00
5.30
1.14
0.32
19.00
5.40
1.19
0.28
20.00
5.48
1.23
0.24
21.00
5.56
1.27
0.22
22.00
5.63
1.31
0.22
23.00
5.70
1.35
0.21
24.00
5.76
1.38
0.20
25.00
5.76
1.38
0.00
26.00
5.76
1.38
0.00
27.00
5.76
1.38
0.00
28.00
5.76
1.38
0.00
29.00
5.76
1.38
0.00
30.00
5.76
1.38
0.00
31.00
5.76
1.38
0.00
32.00
5.76
1.38
0.00
33.00
5.76
1.38
0.00
34.00
5.76
1.38
0.00
35.00
5.76
1.38
0.00
36.00
5.76
1.38
0.00
37.00
5.76
1.38
0.00
38.00
5.76
1.38
0.00
39.00
5.76
1.38
0.00
40.00
5.76
1.38
0.00
41.00
5.76
1.38
0.00
42.00
5.76
1.38
0.00
43.00
5.76
1.38
0.00
44.00
5.76
1.38
0.00
45.00
5.76
1.38
0.00
46.00
5.76
1.38
0.00
47.00
5.76
1.38
0.00
48.00
5.76
1.38
0.00
49.00
5.76
1.38
0.00
50.00
5.76
1.38
0.00
51.00
5.76
1.38
0.00
52.00
5.76
1.38
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
1.38
0.00
54.00
5.76
1.38
0.00
55.00
5.76
1.38
0.00
56.00
5.76
1.38
0.00
57.00
5.76
1.38
0.00
58.00
5.76
1.38
0.00
59.00
5.76
1.38
0.00
60.00
5.76
1.38
0.00
61.00
5.76
1.38
0.00
62.00
5.76
1.38
0.00
63.00
5.76
1.38
0.00
64.00
5.76
1.38
0.00
65.00
5.76
1.38
0.00
66.00
5.76
1.38
0.00
67.00
5.76
1.38
0.00
68.00
5.76
1.38
0.00
69.00
5.76
1.38
0.00
70.00
5.76
1.38
0.00
71.00
5.76
1.38
0.00
72.00
5.76
1.38
0.00
73.00
5.76
1.38
0.00
74.00
5.76
1.38
0.00
75.00
5.76
1.38
0.00
76.00
5.76
1.38
0.00
77.00
5.76
1.38
0.00
78.00
5.76
1.38
0.00
79.00
5.76
1.38
0.00
80.00
5.76
1.38
0.00
81.00
5.76
1.38
0.00
82.00
5.76
1.38
0.00
83.00
5.76
1.38
0.00
84.00
5.76
1.38
0.00
85.00
5.76
1.38
0.00
86.00
5.76
1.38
0.00
87.00
5.76
1.38
0.00
88.00
5.76
1.38
0.00
89.00
5.76
1.38
0.00
90.00
5.76
1.38
0.00
91.00
5.76
1.38
0.00
92.00
5.76
1.38
0.00
93.00
5.76
1.38
0.00
94.00
5.76
1.38
0.00
95.00
5.76
1.38
0.00
96.00
5.76
1.38
0.00
97.00
5.76
1.38
0.00
98.00
5.76
1.38
0.00
99.00
5.76
1.38
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 175
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 46.68 cfs @ 11.96 hrs, Volume= 2.175 af, Depth= 2.01"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
52
so
------------------------'
46.68
--------- - - - - -' ---------------------------'---
cfs-----�---1---�---I-------I-------I---�---I-------I---r---I---r--
■Runoff
48
46
--�--
I I I I I I I I I I I I Ipp �1 '___-__
-----=------=------=------=------=------=------=- ��
------------r--rt---r--+---1---+---1---r---1---,Type. lft 2'F-�-
42
- - - --
----'1---------rt------T----5=y'=-#r-a'rrifai- t6'--
5-,7 '---
40
38
---'--
I
- -, --
--------------------------'--- - -- -- ---
I I I I I I I I I I I I I I I I 1
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36
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26
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22
20
i
--r--
--L--
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-L---1---1--- 1--- 1--- '---1--- --- 1------ L------ L---'--- il+"�—s
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16
--L--
-L---1---L---1---1---1---L---'---L------L------L------L------L--
1 1
14
12
i
j
--T--
--L--
-T---T--T---1---T--- --T---1---T---I---r---I---r---I---r---I---r--
-L---'---L---1---1---'---L---'---L---'---L------L------L------L--
I I I
10
8
i
--T--
--L--
-T--- r--T---rT---�--T---1---T---1 r--- 1--- r--- 1--- r--- 1--- r--
-L---1---L---1---1---1---1---1---1------L------L------L------L--
4
--�--
1---1---I---1---�- I---1---I---1---L---1---L---1---I---1---L--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 176
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.01
0.25
12.00
3.82
0.82
42.25
13.00
4.45
1.17
2.87
14.00
4.72
1.34
1.77
15.00
4.92
1.46
1.44
16.00
5.07
1.55
1.13
17.00
5.19
1.63
1.01
18.00
5.30
1.71
0.90
19.00
5.40
1.77
0.78
20.00
5.48
1.82
0.66
21.00
5.56
1.87
0.63
22.00
5.63
1.92
0.61
23.00
5.70
1.97
0.59
24.00
5.76
2.01
0.57
25.00
5.76
2.01
0.00
26.00
5.76
2.01
0.00
27.00
5.76
2.01
0.00
28.00
5.76
2.01
0.00
29.00
5.76
2.01
0.00
30.00
5.76
2.01
0.00
31.00
5.76
2.01
0.00
32.00
5.76
2.01
0.00
33.00
5.76
2.01
0.00
34.00
5.76
2.01
0.00
35.00
5.76
2.01
0.00
36.00
5.76
2.01
0.00
37.00
5.76
2.01
0.00
38.00
5.76
2.01
0.00
39.00
5.76
2.01
0.00
40.00
5.76
2.01
0.00
41.00
5.76
2.01
0.00
42.00
5.76
2.01
0.00
43.00
5.76
2.01
0.00
44.00
5.76
2.01
0.00
45.00
5.76
2.01
0.00
46.00
5.76
2.01
0.00
47.00
5.76
2.01
0.00
48.00
5.76
2.01
0.00
49.00
5.76
2.01
0.00
50.00
5.76
2.01
0.00
51.00
5.76
2.01
0.00
52.00
5.76
2.01
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
2.01
0.00
54.00
5.76
2.01
0.00
55.00
5.76
2.01
0.00
56.00
5.76
2.01
0.00
57.00
5.76
2.01
0.00
58.00
5.76
2.01
0.00
59.00
5.76
2.01
0.00
60.00
5.76
2.01
0.00
61.00
5.76
2.01
0.00
62.00
5.76
2.01
0.00
63.00
5.76
2.01
0.00
64.00
5.76
2.01
0.00
65.00
5.76
2.01
0.00
66.00
5.76
2.01
0.00
67.00
5.76
2.01
0.00
68.00
5.76
2.01
0.00
69.00
5.76
2.01
0.00
70.00
5.76
2.01
0.00
71.00
5.76
2.01
0.00
72.00
5.76
2.01
0.00
73.00
5.76
2.01
0.00
74.00
5.76
2.01
0.00
75.00
5.76
2.01
0.00
76.00
5.76
2.01
0.00
77.00
5.76
2.01
0.00
78.00
5.76
2.01
0.00
79.00
5.76
2.01
0.00
80.00
5.76
2.01
0.00
81.00
5.76
2.01
0.00
82.00
5.76
2.01
0.00
83.00
5.76
2.01
0.00
84.00
5.76
2.01
0.00
85.00
5.76
2.01
0.00
86.00
5.76
2.01
0.00
87.00
5.76
2.01
0.00
88.00
5.76
2.01
0.00
89.00
5.76
2.01
0.00
90.00
5.76
2.01
0.00
91.00
5.76
2.01
0.00
92.00
5.76
2.01
0.00
93.00
5.76
2.01
0.00
94.00
5.76
2.01
0.00
95.00
5.76
2.01
0.00
96.00
5.76
2.01
0.00
97.00
5.76
2.01
0.00
98.00
5.76
2.01
0.00
99.00
5.76
2.01
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 177
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 60.89 cfs @ 11.96 hrs, Volume= 2.873 af, Depth= 3.57"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
■ Runoff
65 60.89 cfs
60 LTy_-I'tr 'pe L 24 - --L---L---1---L---1---1--- 1--- 1--- L-- - ---L- ------
ss 25-�/�' -_ 4hr-Rainfall=5'� 66'--
-- -- - --- --- +--- +-- -
1 1 1 1 1
so Runoff Areas=-9,670 -ac- -
45 -- -- -- --
Y - -- -- -- Y RUnGff Volum,6=2.$7� -aif -
I- Y - I- --
40 - Autnof# De fi=157"--
35
0 LL 30 ---i-- ----i------i------i------i------------------ 1'�i�.�-I���--
}�
zs 1ICN
--L-- L---I___L---I___L---I___L------L--
20
15
10
-- -- - ---r-----r--Y- r---1---Y---r--r---1---r---1---r---1---r--
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 178
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.05
8.00
0.69
0.01
0.16
9.00
0.85
0.04
0.39
10.00
1.04
0.10
0.69
11.00
1.35
0.22
1.68
12.00
3.82
1.89
52.44
13.00
4.45
2.42
3.10
14.00
4.72
2.65
1.86
15.00
4.92
2.82
1.49
16.00
5.07
2.95
1.16
17.00
5.19
3.06
1.02
18.00
5.30
3.16
0.90
19.00
5.40
3.25
0.78
20.00
5.48
3.32
0.66
21.00
5.56
3.38
0.63
22.00
5.63
3.45
0.60
23.00
5.70
3.51
0.58
24.00
5.76
3.57
0.55
25.00
5.76
3.57
0.00
26.00
5.76
3.57
0.00
27.00
5.76
3.57
0.00
28.00
5.76
3.57
0.00
29.00
5.76
3.57
0.00
30.00
5.76
3.57
0.00
31.00
5.76
3.57
0.00
32.00
5.76
3.57
0.00
33.00
5.76
3.57
0.00
34.00
5.76
3.57
0.00
35.00
5.76
3.57
0.00
36.00
5.76
3.57
0.00
37.00
5.76
3.57
0.00
38.00
5.76
3.57
0.00
39.00
5.76
3.57
0.00
40.00
5.76
3.57
0.00
41.00
5.76
3.57
0.00
42.00
5.76
3.57
0.00
43.00
5.76
3.57
0.00
44.00
5.76
3.57
0.00
45.00
5.76
3.57
0.00
46.00
5.76
3.57
0.00
47.00
5.76
3.57
0.00
48.00
5.76
3.57
0.00
49.00
5.76
3.57
0.00
50.00
5.76
3.57
0.00
51.00
5.76
3.57
0.00
52.00
5.76
3.57
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
3.57
0.00
54.00
5.76
3.57
0.00
55.00
5.76
3.57
0.00
56.00
5.76
3.57
0.00
57.00
5.76
3.57
0.00
58.00
5.76
3.57
0.00
59.00
5.76
3.57
0.00
60.00
5.76
3.57
0.00
61.00
5.76
3.57
0.00
62.00
5.76
3.57
0.00
63.00
5.76
3.57
0.00
64.00
5.76
3.57
0.00
65.00
5.76
3.57
0.00
66.00
5.76
3.57
0.00
67.00
5.76
3.57
0.00
68.00
5.76
3.57
0.00
69.00
5.76
3.57
0.00
70.00
5.76
3.57
0.00
71.00
5.76
3.57
0.00
72.00
5.76
3.57
0.00
73.00
5.76
3.57
0.00
74.00
5.76
3.57
0.00
75.00
5.76
3.57
0.00
76.00
5.76
3.57
0.00
77.00
5.76
3.57
0.00
78.00
5.76
3.57
0.00
79.00
5.76
3.57
0.00
80.00
5.76
3.57
0.00
81.00
5.76
3.57
0.00
82.00
5.76
3.57
0.00
83.00
5.76
3.57
0.00
84.00
5.76
3.57
0.00
85.00
5.76
3.57
0.00
86.00
5.76
3.57
0.00
87.00
5.76
3.57
0.00
88.00
5.76
3.57
0.00
89.00
5.76
3.57
0.00
90.00
5.76
3.57
0.00
91.00
5.76
3.57
0.00
92.00
5.76
3.57
0.00
93.00
5.76
3.57
0.00
94.00
5.76
3.57
0.00
95.00
5.76
3.57
0.00
96.00
5.76
3.57
0.00
97.00
5.76
3.57
0.00
98.00
5.76
3.57
0.00
99.00
5.76
3.57
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 179
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 42.39 cfs @ 11.96 hrs, Volume= 1.993 af, Depth= 3.47"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
46
44 42.39 cfs --I----I---1I---1I---1I---1I---'---1I----------I-------------- 'I---LI
--
42 - -t -- r rrt----t---------F 2��-�-tt� pp�
338
6 25-yi- -- r-F�ainfa 1=5,76L
- r - - - - I- - - - - - - - Y - - I- - - ? - - - - - Y - - I - - - r - - - - - r - -I - - - r - -I - - - r - -
34 -- - - --- - --- - --- - --- Reno€€ Arez -6,900 ae--
32 -- -- ----'------'---------+------+---'------'------'------'--- --
30 - --- T---T--T--- T---T--T --- TRU o€€Volum,6=1,993-d -
28 26 -- -+---I ---+I --- ---+I ---I --Ru-noI f€+I DbI pt1h =3A7+
24
0
--
22 -- ---1---1---1---1---1------1------1---'------'--- - ------------
LL
20 --t-- -------t------t--- I- -- t--- I --- t--- I --- t--- I --- t---I---t w�
18 ------------------------------------------------------- C =7 --
16 -- -- ----'------'---------+------+---'------'------'--- --- --
14 --�------�r-----�r--7------T---�r--T---�r--r------r-----r-----r--
12 -- T-- - T ---i -- T ---i -- T ---i -- T---i--- T---i--- T---i--- T---i--- T---i--- T --
10 -- -- ----'------'------'------'------'------'------'------'--- --
8 --�------��-----�� --T---T--T------T------T------T------r------r--
6 ---'---!------!---'---! - -!---'---!---'---!---'---!---'---!---'---! --
4-------------i---++------+------+------+------------�--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 180
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.02
8.00
0.69
0.01
0.09
9.00
0.85
0.03
0.24
10.00
1.04
0.08
0.45
11.00
1.35
0.19
1.12
12.00
3.82
1.82
36.60
13.00
4.45
2.33
2.18
14.00
4.72
2.56
1.31
15.00
4.92
2.73
1.05
16.00
5.07
2.86
0.81
17.00
5.19
2.97
0.72
18.00
5.30
3.07
0.64
19.00
5.40
3.15
0.55
20.00
5.48
3.22
0.46
21.00
5.56
3.29
0.44
22.00
5.63
3.35
0.43
23.00
5.70
3.41
0.41
24.00
5.76
3.47
0.39
25.00
5.76
3.47
0.00
26.00
5.76
3.47
0.00
27.00
5.76
3.47
0.00
28.00
5.76
3.47
0.00
29.00
5.76
3.47
0.00
30.00
5.76
3.47
0.00
31.00
5.76
3.47
0.00
32.00
5.76
3.47
0.00
33.00
5.76
3.47
0.00
34.00
5.76
3.47
0.00
35.00
5.76
3.47
0.00
36.00
5.76
3.47
0.00
37.00
5.76
3.47
0.00
38.00
5.76
3.47
0.00
39.00
5.76
3.47
0.00
40.00
5.76
3.47
0.00
41.00
5.76
3.47
0.00
42.00
5.76
3.47
0.00
43.00
5.76
3.47
0.00
44.00
5.76
3.47
0.00
45.00
5.76
3.47
0.00
46.00
5.76
3.47
0.00
47.00
5.76
3.47
0.00
48.00
5.76
3.47
0.00
49.00
5.76
3.47
0.00
50.00
5.76
3.47
0.00
51.00
5.76
3.47
0.00
52.00
5.76
3.47
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
3.47
0.00
54.00
5.76
3.47
0.00
55.00
5.76
3.47
0.00
56.00
5.76
3.47
0.00
57.00
5.76
3.47
0.00
58.00
5.76
3.47
0.00
59.00
5.76
3.47
0.00
60.00
5.76
3.47
0.00
61.00
5.76
3.47
0.00
62.00
5.76
3.47
0.00
63.00
5.76
3.47
0.00
64.00
5.76
3.47
0.00
65.00
5.76
3.47
0.00
66.00
5.76
3.47
0.00
67.00
5.76
3.47
0.00
68.00
5.76
3.47
0.00
69.00
5.76
3.47
0.00
70.00
5.76
3.47
0.00
71.00
5.76
3.47
0.00
72.00
5.76
3.47
0.00
73.00
5.76
3.47
0.00
74.00
5.76
3.47
0.00
75.00
5.76
3.47
0.00
76.00
5.76
3.47
0.00
77.00
5.76
3.47
0.00
78.00
5.76
3.47
0.00
79.00
5.76
3.47
0.00
80.00
5.76
3.47
0.00
81.00
5.76
3.47
0.00
82.00
5.76
3.47
0.00
83.00
5.76
3.47
0.00
84.00
5.76
3.47
0.00
85.00
5.76
3.47
0.00
86.00
5.76
3.47
0.00
87.00
5.76
3.47
0.00
88.00
5.76
3.47
0.00
89.00
5.76
3.47
0.00
90.00
5.76
3.47
0.00
91.00
5.76
3.47
0.00
92.00
5.76
3.47
0.00
93.00
5.76
3.47
0.00
94.00
5.76
3.47
0.00
95.00
5.76
3.47
0.00
96.00
5.76
3.47
0.00
97.00
5.76
3.47
0.00
98.00
5.76
3.47
0.00
99.00
5.76
3.47
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 181
Summary for Subcatchment 11S: Bypass #1
Runoff = 14.42 cfs @ 12.10 hrs, Volume= 1.013 af, Depth= 2.18"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN
Description
4.560 58
Woods/grass comb., Good, HSG B
1.020 98
Water Surface, HSG B
5.580 65
Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
16.9
Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
16 -----�--- -- ■Runoff
1 s 14.42 cfs
--- - -
------r---r-----r---r-----t------t---------------rT--Ip---r---i
14 y4----�rr - - - - - - L-I------ LI---
13 1 --------------- ---1
---------------2-5-yT --Ur-Ripfalf-1,76r�'--
12 ha1---ZunofAea=5,58-0c--
11 I I I I I I -a
10 'RUnoff Vol===1.013 Af
N 9 Ru-noff )e'pffi=-0f8-"-
0 8 --1---T---r-- T------T---r-- T------T---I---
T------r _
a 7
- -- - --- --- --- --- --- --- - -- ---
6 --
----- --------7----------------------------------------------------
5
4
----- -
----------------------------------------------
-------------
3
--r -- -r---r--r---r--r---r--t---i---r---i---r---i---r---i---r---
i---r--
2--J-----------1---1---1---1---L------ L - - -I---L-- - ---L-----L--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 182
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.01
0.13
12.00
3.82
0.93
10.36
13.00
4.45
1.30
1.50
14.00
4.72
1.47
0.88
15.00
4.92
1.60
0.68
16.00
5.07
1.70
0.54
17.00
5.19
1.78
0.46
18.00
5.30
1.86
0.41
19.00
5.40
1.93
0.36
20.00
5.48
1.98
0.31
21.00
5.56
2.03
0.29
22.00
5.63
2.08
0.28
23.00
5.70
2.13
0.27
24.00
5.76
2.18
0.26
25.00
5.76
2.18
0.00
26.00
5.76
2.18
0.00
27.00
5.76
2.18
0.00
28.00
5.76
2.18
0.00
29.00
5.76
2.18
0.00
30.00
5.76
2.18
0.00
31.00
5.76
2.18
0.00
32.00
5.76
2.18
0.00
33.00
5.76
2.18
0.00
34.00
5.76
2.18
0.00
35.00
5.76
2.18
0.00
36.00
5.76
2.18
0.00
37.00
5.76
2.18
0.00
38.00
5.76
2.18
0.00
39.00
5.76
2.18
0.00
40.00
5.76
2.18
0.00
41.00
5.76
2.18
0.00
42.00
5.76
2.18
0.00
43.00
5.76
2.18
0.00
44.00
5.76
2.18
0.00
45.00
5.76
2.18
0.00
46.00
5.76
2.18
0.00
47.00
5.76
2.18
0.00
48.00
5.76
2.18
0.00
49.00
5.76
2.18
0.00
50.00
5.76
2.18
0.00
51.00
5.76
2.18
0.00
52.00
5.76
2.18
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
2.18
0.00
54.00
5.76
2.18
0.00
55.00
5.76
2.18
0.00
56.00
5.76
2.18
0.00
57.00
5.76
2.18
0.00
58.00
5.76
2.18
0.00
59.00
5.76
2.18
0.00
60.00
5.76
2.18
0.00
61.00
5.76
2.18
0.00
62.00
5.76
2.18
0.00
63.00
5.76
2.18
0.00
64.00
5.76
2.18
0.00
65.00
5.76
2.18
0.00
66.00
5.76
2.18
0.00
67.00
5.76
2.18
0.00
68.00
5.76
2.18
0.00
69.00
5.76
2.18
0.00
70.00
5.76
2.18
0.00
71.00
5.76
2.18
0.00
72.00
5.76
2.18
0.00
73.00
5.76
2.18
0.00
74.00
5.76
2.18
0.00
75.00
5.76
2.18
0.00
76.00
5.76
2.18
0.00
77.00
5.76
2.18
0.00
78.00
5.76
2.18
0.00
79.00
5.76
2.18
0.00
80.00
5.76
2.18
0.00
81.00
5.76
2.18
0.00
82.00
5.76
2.18
0.00
83.00
5.76
2.18
0.00
84.00
5.76
2.18
0.00
85.00
5.76
2.18
0.00
86.00
5.76
2.18
0.00
87.00
5.76
2.18
0.00
88.00
5.76
2.18
0.00
89.00
5.76
2.18
0.00
90.00
5.76
2.18
0.00
91.00
5.76
2.18
0.00
92.00
5.76
2.18
0.00
93.00
5.76
2.18
0.00
94.00
5.76
2.18
0.00
95.00
5.76
2.18
0.00
96.00
5.76
2.18
0.00
97.00
5.76
2.18
0.00
98.00
5.76
2.18
0.00
99.00
5.76
2.18
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 183
Summary for Subcatchment 12S: Bypass #2
Runoff = 1.64 cfs @ 12.21 hrs, Volume= 0.156 af, Depth= 1.61"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
I I I I I I I I I I I I I I I I I I I ■Runoff
1.64 cfs
Type'III �4-fir
�5-yr 24hr Ikaipfa�1=6,.76��"
Runoff dreg=f.1610 ajc
Rlunpff Vollumle=0.156 of
-;------;---------------------
1 - - - Ruooff Qept-&-T.61 �"-
TC=24.9' min
LL I I I I I I I I I I I I I I
CN=58
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 184
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.00
0.00
12.00
3.82
0.58
0.67
13.00
4.45
0.88
0.30
14.00
4.72
1.02
0.16
15.00
4.92
1.12
0.12
16.00
5.07
1.21
0.10
17.00
5.19
1.28
0.08
18.00
5.30
1.34
0.07
19.00
5.40
1.40
0.06
20.00
5.48
1.44
0.06
21.00
5.56
1.49
0.05
22.00
5.63
1.53
0.05
23.00
5.70
1.57
0.05
24.00
5.76
1.61
0.05
25.00
5.76
1.61
0.00
26.00
5.76
1.61
0.00
27.00
5.76
1.61
0.00
28.00
5.76
1.61
0.00
29.00
5.76
1.61
0.00
30.00
5.76
1.61
0.00
31.00
5.76
1.61
0.00
32.00
5.76
1.61
0.00
33.00
5.76
1.61
0.00
34.00
5.76
1.61
0.00
35.00
5.76
1.61
0.00
36.00
5.76
1.61
0.00
37.00
5.76
1.61
0.00
38.00
5.76
1.61
0.00
39.00
5.76
1.61
0.00
40.00
5.76
1.61
0.00
41.00
5.76
1.61
0.00
42.00
5.76
1.61
0.00
43.00
5.76
1.61
0.00
44.00
5.76
1.61
0.00
45.00
5.76
1.61
0.00
46.00
5.76
1.61
0.00
47.00
5.76
1.61
0.00
48.00
5.76
1.61
0.00
49.00
5.76
1.61
0.00
50.00
5.76
1.61
0.00
51.00
5.76
1.61
0.00
52.00
5.76
1.61
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
1.61
0.00
54.00
5.76
1.61
0.00
55.00
5.76
1.61
0.00
56.00
5.76
1.61
0.00
57.00
5.76
1.61
0.00
58.00
5.76
1.61
0.00
59.00
5.76
1.61
0.00
60.00
5.76
1.61
0.00
61.00
5.76
1.61
0.00
62.00
5.76
1.61
0.00
63.00
5.76
1.61
0.00
64.00
5.76
1.61
0.00
65.00
5.76
1.61
0.00
66.00
5.76
1.61
0.00
67.00
5.76
1.61
0.00
68.00
5.76
1.61
0.00
69.00
5.76
1.61
0.00
70.00
5.76
1.61
0.00
71.00
5.76
1.61
0.00
72.00
5.76
1.61
0.00
73.00
5.76
1.61
0.00
74.00
5.76
1.61
0.00
75.00
5.76
1.61
0.00
76.00
5.76
1.61
0.00
77.00
5.76
1.61
0.00
78.00
5.76
1.61
0.00
79.00
5.76
1.61
0.00
80.00
5.76
1.61
0.00
81.00
5.76
1.61
0.00
82.00
5.76
1.61
0.00
83.00
5.76
1.61
0.00
84.00
5.76
1.61
0.00
85.00
5.76
1.61
0.00
86.00
5.76
1.61
0.00
87.00
5.76
1.61
0.00
88.00
5.76
1.61
0.00
89.00
5.76
1.61
0.00
90.00
5.76
1.61
0.00
91.00
5.76
1.61
0.00
92.00
5.76
1.61
0.00
93.00
5.76
1.61
0.00
94.00
5.76
1.61
0.00
95.00
5.76
1.61
0.00
96.00
5.76
1.61
0.00
97.00
5.76
1.61
0.00
98.00
5.76
1.61
0.00
99.00
5.76
1.61
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 185
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 11.88 cfs @ 12.16 hrs, Volume= 1.044 af, Depth= 1.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
13 ■Runoff
- 11.88 cfs - --- -- --- ---
12
11 ------ - --- --i
------ --- --T
---- 2$-yr--�Or-Rtainfa j=5',76.�'--
10
-J---1---1---1---1--- L--- 1--- 1---Runoff Area=-9 07-0-ac -
-- ------1---1---1---1--- 1Rdnoff VDIUmt= 044e-
8 I I I I I I 1
N --J- -1---1---1---1---1------1------1--- --Run'off1D7e'-tfh='L36`~-
7-
p
3 -- --4--- ---4--- ---4--- ---+------+--- ---r --- I- r -I- -- r--
LL
5 C =5
-r-- -r---r--r---r--r---r--t------r------r------r------r---
---r--
--T- -T---r--T---r--Y---r--T---r--T---r--r------r------r------r--
3 1
--T-- 7------7------7------T------T------r------T------r------r--
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 186
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.00
0.00
12.00
3.82
0.46
5.66
13.00
4.45
0.72
1.85
14.00
4.72
0.85
1.07
15.00
4.92
0.94
0.82
16.00
5.07
1.01
0.66
17.00
5.19
1.08
0.57
18.00
5.30
1.14
0.52
19.00
5.40
1.19
0.45
20.00
5.48
1.23
0.39
21.00
5.56
1.27
0.36
22.00
5.63
1.31
0.35
23.00
5.70
1.35
0.34
24.00
5.76
1.38
0.33
25.00
5.76
1.38
0.00
26.00
5.76
1.38
0.00
27.00
5.76
1.38
0.00
28.00
5.76
1.38
0.00
29.00
5.76
1.38
0.00
30.00
5.76
1.38
0.00
31.00
5.76
1.38
0.00
32.00
5.76
1.38
0.00
33.00
5.76
1.38
0.00
34.00
5.76
1.38
0.00
35.00
5.76
1.38
0.00
36.00
5.76
1.38
0.00
37.00
5.76
1.38
0.00
38.00
5.76
1.38
0.00
39.00
5.76
1.38
0.00
40.00
5.76
1.38
0.00
41.00
5.76
1.38
0.00
42.00
5.76
1.38
0.00
43.00
5.76
1.38
0.00
44.00
5.76
1.38
0.00
45.00
5.76
1.38
0.00
46.00
5.76
1.38
0.00
47.00
5.76
1.38
0.00
48.00
5.76
1.38
0.00
49.00
5.76
1.38
0.00
50.00
5.76
1.38
0.00
51.00
5.76
1.38
0.00
52.00
5.76
1.38
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
1.38
0.00
54.00
5.76
1.38
0.00
55.00
5.76
1.38
0.00
56.00
5.76
1.38
0.00
57.00
5.76
1.38
0.00
58.00
5.76
1.38
0.00
59.00
5.76
1.38
0.00
60.00
5.76
1.38
0.00
61.00
5.76
1.38
0.00
62.00
5.76
1.38
0.00
63.00
5.76
1.38
0.00
64.00
5.76
1.38
0.00
65.00
5.76
1.38
0.00
66.00
5.76
1.38
0.00
67.00
5.76
1.38
0.00
68.00
5.76
1.38
0.00
69.00
5.76
1.38
0.00
70.00
5.76
1.38
0.00
71.00
5.76
1.38
0.00
72.00
5.76
1.38
0.00
73.00
5.76
1.38
0.00
74.00
5.76
1.38
0.00
75.00
5.76
1.38
0.00
76.00
5.76
1.38
0.00
77.00
5.76
1.38
0.00
78.00
5.76
1.38
0.00
79.00
5.76
1.38
0.00
80.00
5.76
1.38
0.00
81.00
5.76
1.38
0.00
82.00
5.76
1.38
0.00
83.00
5.76
1.38
0.00
84.00
5.76
1.38
0.00
85.00
5.76
1.38
0.00
86.00
5.76
1.38
0.00
87.00
5.76
1.38
0.00
88.00
5.76
1.38
0.00
89.00
5.76
1.38
0.00
90.00
5.76
1.38
0.00
91.00
5.76
1.38
0.00
92.00
5.76
1.38
0.00
93.00
5.76
1.38
0.00
94.00
5.76
1.38
0.00
95.00
5.76
1.38
0.00
96.00
5.76
1.38
0.00
97.00
5.76
1.38
0.00
98.00
5.76
1.38
0.00
99.00
5.76
1.38
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 187
Summary for Subcatchment 14S: Post Development #3
Runoff = 11.77 cfs @ 12.16 hrs, Volume= 1.035 af, Depth= 1.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-yr - 24hr Rainfall=5.76"
Area (ac) CN Description
8.670
55 Woods, Good, HSG B
0.320
58 Woods/grass comb., Good, HSG B
8.990
55 Weighted Average
8.990
100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
13---'i---il -- i ---il -- i---i--- i ---il -- i---i--- i---i--- il---i--- il---i--- il---i--- i-- � Runoff
- 11.77 cfs - --L---1---1---L--L------L------L------L--- ---L--- ---L--
12-
--J- - ---------1---1---1---1--- ---1--- ---L--- ----TypeL1124-�" -
-- - - -------------------+---- i' -
25=y1p =-�4I�r-F�a'rn#alb=5t6',
- - - -- -- --- -- -- --- Runoff Area=8C990-aC--
9
- - - L-- -- ;Runoff Votumd=1�.0359 -
8
7 -- - - -- -- --- -- -- --- -----Run'off+Depth-'fL38►r-
0 6 � Tc,=2 0 .7 m In
LL
-t---
---r-----r--t---r--t------t------t--- I --- t---i---r -
5 CN=55-
-t-- -t---r--t---r--t---r--t------t------t------t------r----r--
4
--T-- -T---I--7------7---I --T------T------r------r--r---r------r--
3 I I I
- T-- T T T T T r r r r--
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 188
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.06
0.00
0.00
2.00
0.13
0.00
0.00
3.00
0.20
0.00
0.00
4.00
0.28
0.00
0.00
5.00
0.36
0.00
0.00
6.00
0.46
0.00
0.00
7.00
0.57
0.00
0.00
8.00
0.69
0.00
0.00
9.00
0.85
0.00
0.00
10.00
1.04
0.00
0.00
11.00
1.35
0.00
0.00
12.00
3.82
0.46
5.61
13.00
4.45
0.72
1.83
14.00
4.72
0.85
1.06
15.00
4.92
0.94
0.82
16.00
5.07
1.01
0.66
17.00
5.19
1.08
0.57
18.00
5.30
1.14
0.51
19.00
5.40
1.19
0.45
20.00
5.48
1.23
0.39
21.00
5.56
1.27
0.36
22.00
5.63
1.31
0.35
23.00
5.70
1.35
0.34
24.00
5.76
1.38
0.32
25.00
5.76
1.38
0.00
26.00
5.76
1.38
0.00
27.00
5.76
1.38
0.00
28.00
5.76
1.38
0.00
29.00
5.76
1.38
0.00
30.00
5.76
1.38
0.00
31.00
5.76
1.38
0.00
32.00
5.76
1.38
0.00
33.00
5.76
1.38
0.00
34.00
5.76
1.38
0.00
35.00
5.76
1.38
0.00
36.00
5.76
1.38
0.00
37.00
5.76
1.38
0.00
38.00
5.76
1.38
0.00
39.00
5.76
1.38
0.00
40.00
5.76
1.38
0.00
41.00
5.76
1.38
0.00
42.00
5.76
1.38
0.00
43.00
5.76
1.38
0.00
44.00
5.76
1.38
0.00
45.00
5.76
1.38
0.00
46.00
5.76
1.38
0.00
47.00
5.76
1.38
0.00
48.00
5.76
1.38
0.00
49.00
5.76
1.38
0.00
50.00
5.76
1.38
0.00
51.00
5.76
1.38
0.00
52.00
5.76
1.38
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
5.76
1.38
0.00
54.00
5.76
1.38
0.00
55.00
5.76
1.38
0.00
56.00
5.76
1.38
0.00
57.00
5.76
1.38
0.00
58.00
5.76
1.38
0.00
59.00
5.76
1.38
0.00
60.00
5.76
1.38
0.00
61.00
5.76
1.38
0.00
62.00
5.76
1.38
0.00
63.00
5.76
1.38
0.00
64.00
5.76
1.38
0.00
65.00
5.76
1.38
0.00
66.00
5.76
1.38
0.00
67.00
5.76
1.38
0.00
68.00
5.76
1.38
0.00
69.00
5.76
1.38
0.00
70.00
5.76
1.38
0.00
71.00
5.76
1.38
0.00
72.00
5.76
1.38
0.00
73.00
5.76
1.38
0.00
74.00
5.76
1.38
0.00
75.00
5.76
1.38
0.00
76.00
5.76
1.38
0.00
77.00
5.76
1.38
0.00
78.00
5.76
1.38
0.00
79.00
5.76
1.38
0.00
80.00
5.76
1.38
0.00
81.00
5.76
1.38
0.00
82.00
5.76
1.38
0.00
83.00
5.76
1.38
0.00
84.00
5.76
1.38
0.00
85.00
5.76
1.38
0.00
86.00
5.76
1.38
0.00
87.00
5.76
1.38
0.00
88.00
5.76
1.38
0.00
89.00
5.76
1.38
0.00
90.00
5.76
1.38
0.00
91.00
5.76
1.38
0.00
92.00
5.76
1.38
0.00
93.00
5.76
1.38
0.00
94.00
5.76
1.38
0.00
95.00
5.76
1.38
0.00
96.00
5.76
1.38
0.00
97.00
5.76
1.38
0.00
98.00
5.76
1.38
0.00
99.00
5.76
1.38
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 189
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 2.01" for 25-yr - 24hr event
Inflow = 46.68 cfs @ 11.96 hrs, Volume= 2.175 of
Outflow = 0.96 cfs @ 17.45 hrs, Volume= 1.418 af, Atten= 98%, Lag= 329.3 min
Primary = 0.96 cfs @ 17.45 hrs, Volume= 1.418 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 570.31' @ 17.45 hrs Surf.Area= 22,272 sf Storage= 69,856 cf
Plug -Flow detention time= 1,748.8 min calculated for 1.417 of (65% of inflow)
Center -of -Mass det. time= 1,630.5 min ( 2,483.7 - 853.2 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.95 cfs @ 17.45 hrs HW=570.31' (Free Discharge)
L1=RCP_Round 36" (Passes 0.95 cfs of 89.81 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.15 cfs @ 9.31 fps)
3=Custom Weir/Orifice (Weir Controls 0.81 cfs @ 1.51 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 190
Pond 5P: BMP #1
Hydrograph
--L--L--1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1--
cfs
46.68
-; --; -----,---,----------[hfilw-A'r 80-,'aC -
--,, -
50
'a"r12.9-
---I------ Pe---5703I ,--
r
akElev=
0_cSt rage=
40
- -L-
-1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1--
35
--I-
-------------------------- -
I-
�' I
30 ��
�
I
--r-
I I I I I I I I I I I I I I I I I
-t--t--r--r--r---I---I---I---I---r--r--r--r--r--r--r--r--
3 25
o
LL
--+-
I
-+--+--+--+--+------------------+--+--+--+--+--+--+--
I I I I I I I I I I I I I I I I I
20
-
- - - - - - - - - - - - - -
15
--; -
I
-- --------------------,---; --; --; --; --; --; -- -- --
I I I I I I I I I I I I I I I I
10
0.96 cfs
0.00 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 191
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 192
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.00
0
566.50
0.00
0.00
0.00
12.50
4.44
47,894
569.28
0.12
0.12
0.00
15.00
1.44
66,605
570.17
0.30
0.30
0.00
17.50
0.95
69,857
570.31
0.96
0.96
0.00
20.00
0.66
69,142
570.28
0.78
0.78
0.00
22.50
0.60
68,530
570.25
0.64
0.64
0.00
25.00
0.00
66,850
570.18
0.33
0.33
0.00
27.50
0.00
65,030
570.09
0.14
0.14
0.00
30.00
0.00
63,753
570.04
0.14
0.14
0.00
32.50
0.00
62,487
569.98
0.14
0.14
0.00
35.00
0.00
61,232
569.92
0.14
0.14
0.00
37.50
0.00
59,987
569.86
0.14
0.14
0.00
40.00
0.00
58,754
569.80
0.14
0.14
0.00
42.50
0.00
57,532
569.74
0.14
0.14
0.00
45.00
0.00
56,320
569.69
0.13
0.13
0.00
47.50
0.00
55,120
569.63
0.13
0.13
0.00
50.00
0.00
53,931
569.57
0.13
0.13
0.00
52.50
0.00
52,754
569.51
0.13
0.13
0.00
55.00
0.00
51,587
569.46
0.13
0.13
0.00
57.50
0.00
50,432
569.40
0.13
0.13
0.00
60.00
0.00
49,289
569.35
0.13
0.13
0.00
62.50
0.00
48,157
569.29
0.13
0.13
0.00
65.00
0.00
47,036
569.23
0.12
0.12
0.00
67.50
0.00
45,928
569.18
0.12
0.12
0.00
70.00
0.00
44,831
569.12
0.12
0.12
0.00
72.50
0.00
43,745
569.07
0.12
0.12
0.00
75.00
0.00
42,672
569.01
0.12
0.12
0.00
77.50
0.00
41,611
568.96
0.12
0.12
0.00
80.00
0.00
40,561
568.90
0.12
0.12
0.00
82.50
0.00
39,524
568.85
0.11
0.11
0.00
85.00
0.00
38,499
568.80
0.11
0.11
0.00
87.50
0.00
37,486
568.74
0.11
0.11
0.00
90.00
0.00
36,485
568.69
0.11
0.11
0.00
92.50
0.00
35,497
568.64
0.11
0.11
0.00
95.00
0.00
34,521
568.59
0.11
0.11
0.00
97.50
0.00
33,558
568.53
0.11
0.11
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 193
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 194
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 195
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 3.57" for 25-yr - 24hr event
Inflow = 60.89 cfs @ 11.96 hrs, Volume= 2.873 of
Outflow = 19.54 cfs @ 12.09 hrs, Volume= 2.860 af, Atten= 68%, Lag= 8.0 min
Primary = 19.54 cfs @ 12.09 hrs, Volume= 2.860 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 562.61' @ 12.09 hrs Surf.Area= 18,556 sf Storage= 58,734 cf
Plug -Flow detention time= 633.6 min calculated for 2.860 of (100% of inflow)
Center -of -Mass det. time= 630.8 min ( 1,442.6 - 811.8 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=19.14 cfs @ 12.09 hrs HW=562.60' (Free Discharge)
L1=RCP_Round 36" (Passes 19.14 cfs of 106.54 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.33 cfs @ 9.63 fps)
3=Custom Weir/Orifice (Orifice Controls 5.50 cfs @ 4.78 fps)
4=Top of Box (Weir Controls 13.32 cfs @ 2.07 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 196
Hydrograph
60.89 CfS
■ Inflow
❑OUtflOw
-r--r--r--r---i---i---i--�-ii---r--r/-�-r--.yr--r-�-+Irk--r--e�ra--
1nf owrAreA=9.670 ac
■ Primary
■Secondary
65
--r--r--r--r--r--r------------i--•
e;ak �-IeY 56L.6 1
60
�,-- �,-- �,---�,---�,---�,---�,--Sta'rade�5#58
�'�8
55
.;�,
--�---�,--�,--
--r--t--t--r--r--r---------------r--r--
734 cf
r--r--f
50
--r- -r--r--r--r--r---i---i---r--r--r--r--r--r--r--r--r--r--
w 40
u
35
- - - - r - - r - - r - - r - - r - - -I- - -I- - -I-
- -I- - -I- - - r - - r - - r - - r - - r - - r - - r - -
0
a 30rf
zs
19.54 cfs -- ----- - - -, --
- rt--rt-- --r'--r'------------------'r--'r--r--r--t--------
- --- --- -- -- - - -; -- -- --
20
15
10
0.00
CfS
0
0
5 10 15 20 25 30 35 40 45 50 55 60
65 70 75 80 85 90 95
Time (hours)
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 197
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 198
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.10
190
558.52
0.00
0.00
0.00
10.00
0.69
2,961
558.79
0.07
0.07
0.00
12.50
4.92
53,331
562.31
6.87
6.87
0.00
15.00
1.49
43,425
561.74
2.17
2.17
0.00
17.50
0.96
39,304
561.49
1.23
1.23
0.00
20.00
0.66
37,316
561.37
0.86
0.86
0.00
22.50
0.59
36,195
561.30
0.67
0.67
0.00
25.00
0.00
34,188
561.17
0.39
0.39
0.00
27.50
0.00
31,568
561.00
0.25
0.25
0.00
30.00
0.00
29,320
560.85
0.25
0.25
0.00
32.50
0.00
27,145
560.70
0.24
0.24
0.00
35.00
0.00
25,044
560.55
0.23
0.23
0.00
37.50
0.00
23,020
560.41
0.22
0.22
0.00
40.00
0.00
21,074
560.27
0.21
0.21
0.00
42.50
0.00
19,208
560.13
0.20
0.20
0.00
45.00
0.00
17,423
560.00
0.19
0.19
0.00
47.50
0.00
15,721
559.87
0.18
0.18
0.00
50.00
0.00
14,103
559.74
0.17
0.17
0.00
52.50
0.00
12,571
559.62
0.17
0.17
0.00
55.00
0.00
11,128
559.50
0.16
0.16
0.00
57.50
0.00
9,773
559.39
0.15
0.15
0.00
60.00
0.00
8,510
559.28
0.14
0.14
0.00
62.50
0.00
7,340
559.18
0.12
0.12
0.00
65.00
0.00
6,263
559.09
0.11
0.11
0.00
67.50
0.00
5,282
559.00
0.10
0.10
0.00
70.00
0.00
4,399
558.92
0.09
0.09
0.00
72.50
0.00
3,615
558.85
0.08
0.08
0.00
75.00
0.00
2,932
558.79
0.07
0.07
0.00
77.50
0.00
2,353
558.73
0.06
0.06
0.00
80.00
0.00
1,876
558.69
0.05
0.05
0.00
82.50
0.00
1,510
558.65
0.03
0.03
0.00
85.00
0.00
1,240
558.62
0.03
0.03
0.00
87.50
0.00
1,036
558.60
0.02
0.02
0.00
90.00
0.00
881
558.59
0.02
0.02
0.00
92.50
0.00
762
558.58
0.01
0.01
0.00
95.00
0.00
671
558.57
0.01
0.01
0.00
97.50
0.00
600
558.56
0.01
0.01
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 199
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 200
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 201
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 3.47" for 25-yr - 24hr event
Inflow = 42.39 cfs @ 11.96 hrs, Volume= 1.993 of
Outflow = 3.16 cfs @ 12.55 hrs, Volume= 1.829 af, Atten= 93%, Lag= 35.4 min
Primary = 3.16 cfs @ 12.55 hrs, Volume= 1.829 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 572.40' @ 12.55 hrs Surf.Area= 15,014 sf Storage= 47,757 cf
Plug -Flow detention time= 992.2 min calculated for 1.829 of (92% of inflow)
Center -of -Mass det. time= 948.5 min ( 1,762.9 - 814.4 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=3.16 cfs @ 12.55 hrs HW=572.40' (Free Discharge)
L1=RCP_Round 24" (Passes 3.16 cfs of 41.82 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.15 cfs @ 9.42 fps)
3=Custom Weir/Orifice (Weir Controls 3.01 cfs @ 3.59 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 202
Pond 7P: BMP #3
Hydrograph
42.39 cfs
inflow Aire-9=6.9004 aC--
40 --ill --'---'-----------------------S-tp-m a#i' 7,757-Cif -
35
30
�v 25
,
a 20
-I - -I - - T - - 7 - - 7 - -
15
10 ---- - i -- i -- i---i---i---i---i---i---i---'i --'i --'i -- it -- it -- it -- i -- i --
3.16 cfsMM
0.00 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
Lry
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 203
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 204
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.05
71
568.51
0.00
0.00
0.00
10.00
0.45
1,850
568.70
0.03
0.03
0.00
12.50
3.45
47,735
572.40
3.16
3.16
0.00
15.00
1.05
41,144
571.95
1.63
1.63
0.00
17.50
0.68
37,517
571.69
0.93
0.93
0.00
20.00
0.46
35,725
571.56
0.64
0.64
0.00
22.50
0.42
34,710
571.49
0.49
0.49
0.00
25.00
0.00
33,154
571.38
0.30
0.30
0.00
27.50
0.00
31,317
571.24
0.14
0.14
0.00
30.00
0.00
30,177
571.15
0.12
0.12
0.00
32.50
0.00
29,088
571.07
0.12
0.12
0.00
35.00
0.00
28,017
570.99
0.12
0.12
0.00
37.50
0.00
26,964
570.91
0.12
0.12
0.00
40.00
0.00
25,929
570.83
0.11
0.11
0.00
42.50
0.00
24,912
570.75
0.11
0.11
0.00
45.00
0.00
23,914
570.67
0.11
0.11
0.00
47.50
0.00
22,934
570.59
0.11
0.11
0.00
50.00
0.00
21,973
570.51
0.11
0.11
0.00
52.50
0.00
21,031
570.44
0.10
0.10
0.00
55.00
0.00
20,108
570.36
0.10
0.10
0.00
57.50
0.00
19,204
570.28
0.10
0.10
0.00
60.00
0.00
18,319
570.21
0.10
0.10
0.00
62.50
0.00
17,455
570.14
0.10
0.10
0.00
65.00
0.00
16,609
570.07
0.09
0.09
0.00
67.50
0.00
15,784
570.00
0.09
0.09
0.00
70.00
0.00
14,979
569.93
0.09
0.09
0.00
72.50
0.00
14,194
569.86
0.09
0.09
0.00
75.00
0.00
13,429
569.79
0.08
0.08
0.00
77.50
0.00
12,685
569.72
0.08
0.08
0.00
80.00
0.00
11,962
569.66
0.08
0.08
0.00
82.50
0.00
11,260
569.60
0.08
0.08
0.00
85.00
0.00
10,578
569.54
0.07
0.07
0.00
87.50
0.00
9,918
569.48
0.07
0.07
0.00
90.00
0.00
9,279
569.42
0.07
0.07
0.00
92.50
0.00
8,661
569.36
0.07
0.07
0.00
95.00
0.00
8,065
569.30
0.07
0.07
0.00
97.50
0.00
7,491
569.25
0.06
0.06
0.00

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 205
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 206
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 207
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 2.95" for 25-yr - 24hr event
Inflow = 4.46 cfs @ 12.26 hrs, Volume= 1.984 of
Primary = 4.46 cfs @ 12.26 hrs, Volume= 1.984 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 208
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.01
0.00
0.01
10.00
0.03
0.00
0.03
11.00
0.05
0.00
0.05
12.00
1.56
0.00
1.56
13.00
3.25
0.00
3.25
14.00
2.35
0.00
2.35
15.00
1.75
0.00
1.75
16.00
1.36
0.00
1.36
17.00
1.10
0.00
1.10
18.00
0.93
0.00
0.93
19.00
0.80
0.00
0.80
20.00
0.69
0.00
0.69
21.00
0.61
0.00
0.61
22.00
0.56
0.00
0.56
23.00
0.52
0.00
0.52
24.00
0.49
0.00
0.49
25.00
0.30
0.00
0.30
26.00
0.21
0.00
0.21
27.00
0.16
0.00
0.16
28.00
0.13
0.00
0.13
29.00
0.12
0.00
0.12
30.00
0.12
0.00
0.12
31.00
0.12
0.00
0.12
32.00
0.12
0.00
0.12
33.00
0.12
0.00
0.12
34.00
0.12
0.00
0.12
35.00
0.12
0.00
0.12
36.00
0.12
0.00
0.12
37.00
0.12
0.00
0.12
38.00
0.12
0.00
0.12
39.00
0.11
0.00
0.11
40.00
0.11
0.00
0.11
41.00
0.11
0.00
0.11
42.00
0.11
0.00
0.11
43.00
0.11
0.00
0.11
44.00
0.11
0.00
0.11
45.00
0.11
0.00
0.11
46.00
0.11
0.00
0.11
47.00
0.11
0.00
0.11
48.00
0.11
0.00
0.11
49.00
0.11
0.00
0.11
50.00
0.11
0.00
0.11
51.00
0.10
0.00
0.10
52.00
0.10
0.00
0.10
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.10
0.00
0.10
54.00
0.10
0.00
0.10
55.00
0.10
0.00
0.10
56.00
0.10
0.00
0.10
57.00
0.10
0.00
0.10
58.00
0.10
0.00
0.10
59.00
0.10
0.00
0.10
60.00
0.10
0.00
0.10
61.00
0.10
0.00
0.10
62.00
0.10
0.00
0.10
63.00
0.09
0.00
0.09
64.00
0.09
0.00
0.09
65.00
0.09
0.00
0.09
66.00
0.09
0.00
0.09
67.00
0.09
0.00
0.09
68.00
0.09
0.00
0.09
69.00
0.09
0.00
0.09
70.00
0.09
0.00
0.09
71.00
0.09
0.00
0.09
72.00
0.09
0.00
0.09
73.00
0.09
0.00
0.09
74.00
0.08
0.00
0.08
75.00
0.08
0.00
0.08
76.00
0.08
0.00
0.08
77.00
0.08
0.00
0.08
78.00
0.08
0.00
0.08
79.00
0.08
0.00
0.08
80.00
0.08
0.00
0.08
81.00
0.08
0.00
0.08
82.00
0.08
0.00
0.08
83.00
0.08
0.00
0.08
84.00
0.08
0.00
0.08
85.00
0.07
0.00
0.07
86.00
0.07
0.00
0.07
87.00
0.07
0.00
0.07
88.00
0.07
0.00
0.07
89.00
0.07
0.00
0.07
90.00
0.07
0.00
0.07
91.00
0.07
0.00
0.07
92.00
0.07
0.00
0.07
93.00
0.07
0.00
0.07
94.00
0.07
0.00
0.07
95.00
0.07
0.00
0.07
96.00
0.06
0.00
0.06
97.00
0.06
0.00
0.06
98.00
0.06
0.00
0.06
99.00
0.06
0.00
0.06

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 209
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61 % Impervious, Inflow Depth > 2.25" for 25-yr - 24hr event
Inflow = 34.02 cfs @ 12.09 hrs, Volume= 5.291 of
Primary = 34.02 cfs @ 12.09 hrs, Volume= 5.291 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
-- �---I---
-----I--
r -- �---I--- t -- 7---I--- T---I---I--- T---I--- r -- Y---I--- r -- � ---I--
---,------r-- r------T---------T------r-- T------r--,---I--
■Inflow
38
36
-------T--------T---I- - -I - - T------ r--T------r-- ---I--
I I I �� w IA0
T--TT---oec �P _
■ Primary
34.02
cfs
--T
34
- ---I--- --T---I---T-- -I---T -----I-----T---
32
�I
- - -1-
T--TTTTI---T--T---I--
1 1 1 1 1 1 1
- _ - - - - - -
30
�I
1
---
T T T T T T T T T I
1 1 1 1 1 1
28
F
26
'I
24
H 22
20
0 18
0
--
- -'I
- -- --I-= _ --I-= =-I-= _ =-I-= _ =-I-= __ --I--
- -'I - -'I- - - -'I - -'I- - - -'I - - - - -'I - - - -'I - -'I - - -'I - -'I - -
16
-L
-L--L------L-- ---1---1---------1------L--1------L--L---I--
14
-L
-L--L------L--L---1---1---1---1---1---1---L--1------L--L---I--
12
-L
-L--L---I---L--L---1---1---1------1---I---L--1---I---L--L---I--
10
-L
-L--L------L--L---1---1---1---1---1---1---L--1------L--L---I--
8
-
L--------L--------L---------L------L--L------L-- ---I--
6
-
--T--------+---------+------L--+------L-- ---I--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type // 24-hr 25-yr - 24hr Rainfa11=5.76"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 210
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.01
0.00
0.01
9.00
0.03
0.00
0.03
10.00
0.07
0.00
0.07
11.00
0.25
0.00
0.25
12.00
17.22
0.00
17.22
13.00
5.86
0.00
5.86
14.00
4.01
0.00
4.01
15.00
3.14
0.00
3.14
16.00
3.00
0.00
3.00
17.00
2.76
0.00
2.76
18.00
2.50
0.00
2.50
19.00
2.23
0.00
2.23
20.00
1.95
0.00
1.95
21.00
1.75
0.00
1.75
22.00
1.63
0.00
1.63
23.00
1.55
0.00
1.55
24.00
1.48
0.00
1.48
25.00
0.73
0.00
0.73
26.00
0.49
0.00
0.49
27.00
0.41
0.00
0.41
28.00
0.39
0.00
0.39
29.00
0.39
0.00
0.39
30.00
0.39
0.00
0.39
31.00
0.38
0.00
0.38
32.00
0.38
0.00
0.38
33.00
0.38
0.00
0.38
34.00
0.37
0.00
0.37
35.00
0.37
0.00
0.37
36.00
0.36
0.00
0.36
37.00
0.36
0.00
0.36
38.00
0.36
0.00
0.36
39.00
0.35
0.00
0.35
40.00
0.35
0.00
0.35
41.00
0.34
0.00
0.34
42.00
0.34
0.00
0.34
43.00
0.34
0.00
0.34
44.00
0.33
0.00
0.33
45.00
0.33
0.00
0.33
46.00
0.32
0.00
0.32
47.00
0.32
0.00
0.32
48.00
0.32
0.00
0.32
49.00
0.31
0.00
0.31
50.00
0.31
0.00
0.31
51.00
0.30
0.00
0.30
52.00
0.30
0.00
0.30
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.29
0.00
0.29
54.00
0.29
0.00
0.29
55.00
0.28
0.00
0.28
56.00
0.28
0.00
0.28
57.00
0.28
0.00
0.28
58.00
0.27
0.00
0.27
59.00
0.27
0.00
0.27
60.00
0.26
0.00
0.26
61.00
0.26
0.00
0.26
62.00
0.25
0.00
0.25
63.00
0.25
0.00
0.25
64.00
0.24
0.00
0.24
65.00
0.24
0.00
0.24
66.00
0.23
0.00
0.23
67.00
0.23
0.00
0.23
68.00
0.22
0.00
0.22
69.00
0.22
0.00
0.22
70.00
0.21
0.00
0.21
71.00
0.21
0.00
0.21
72.00
0.20
0.00
0.20
73.00
0.20
0.00
0.20
74.00
0.19
0.00
0.19
75.00
0.19
0.00
0.19
76.00
0.18
0.00
0.18
77.00
0.18
0.00
0.18
78.00
0.17
0.00
0.17
79.00
0.17
0.00
0.17
80.00
0.16
0.00
0.16
81.00
0.16
0.00
0.16
82.00
0.15
0.00
0.15
83.00
0.15
0.00
0.15
84.00
0.14
0.00
0.14
85.00
0.14
0.00
0.14
86.00
0.14
0.00
0.14
87.00
0.13
0.00
0.13
88.00
0.13
0.00
0.13
89.00
0.13
0.00
0.13
90.00
0.13
0.00
0.13
91.00
0.12
0.00
0.12
92.00
0.12
0.00
0.12
93.00
0.12
0.00
0.12
94.00
0.12
0.00
0.12
95.00
0.12
0.00
0.12
96.00
0.12
0.00
0.12
97.00
0.11
0.00
0.11
98.00
0.11
0.00
0.11
99.00
0.11
0.00
0.11

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 211
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=1.97"
Tc=21.7 min CN=57 Runoff=59.50 cfs 5.034 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=1.80"
Tc=24.9 min CN=55 Runoff=8.89 cfs 0.844 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=2.52"
Tc=5.0 min CN=63 Runoff=58.79 cfs 2.724 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=4.22"
Tc=5.0 min CN=80 Runoff=71.48 cfs 3.398 of
Subcatchment10S: BMP#3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=4.11"
Tc=5.0 min CN=79 Runoff=49.92 cfs 2.364 of
Subcatchment 11 S: Bypass#1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=2.71"
Tc=16.9 min CN=65 Runoff=18.10 cfs 1.258 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=2.06"
Tc=24.9 min CN=58 Runoff=2.18 cfs 0.199 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=1.80"
Tc=20.7 min CN=55 Runoff=16.20 cfs 1.361 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=1.80"
Tc=20.7 min CN=55 Runoff=16.05 cfs 1.349 of
Pond 5P: BMP #1 Peak EIev=570.47' Storage=73,402 cf Inflow=58.79 cfs 2.724 of
Primary=2.00 cfs 1.965 of Secondary=0.00 cfs 0.000 of Outflow=2.00 cfs 1.965 of
Pond 6P: BMP #2 Peak EIev=562.91' Storage=64,367 cf Inflow=71.48 cfs 3.398 of
Primary=37.82 cfs 3.385 of Secondary=0.00 cfs 0.000 of Outflow=37.82 cfs 3.385 of
Pond 7P: BMP #3 Peak EIev=572.86' Storage=54,822 cf Inflow=49.92 cfs 2.364 of
Primary=5.06 cfs 2.198 of Secondary=0.00 cfs 0.000 of Outflow=5.06 cfs 2.198 of
Link 17L: Post Development#2 Inflow=7.12 cfs 2.398 of
Primary=7.12 cfs 2.398 of
Link 18L: Post Development#1
Inflow=55.05 cfs 6.608 of
Primary=55.05 cfs 6.608 of
Total Runoff Area = 90.560 ac Runoff Volume = 18.532 of Average Runoff Depth = 2.46"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 212
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 59.50 cfs @ 12.16 hrs, Volume= 5.034 af, Depth= 1.97"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
I---i----- - - -li--- - -
65i--- ---li -----i------i------i---------il------r-- ■Runoff
- 59.50 cfs --I--- ---I-- ---I-- ---I-- ---------------------------'---
60---'i--- - ---I'--- I'i---I'--- I'i---I'------I'--- ---I'--- I'i---------h'a" 1
55 L!t
-- --- - - --- -- --50 r24hr-R flnfa11=&A8w'--
50
- - Rgnbff Area=X.590 -ad- -
-------------
45 1 1 1 1 1 1 1 1 1
-- ---------L------L--- -F uno �'-lu1mp-'-5.01'4 pf -
40 Q `T—
N --J- -J---1___J------J------J------J------L---1___1___1___L---1---L--
w Runoff Depth =1;97"
� 35 1 1 1 1 1 1 1 1 1 1 1
3 --+- -+------+------+------+------+---I- +- --I---+
----
LL 30Tcr21.7 Min
- - + - - - - - 1- - - + - - - - - - - - - 1-
25 -- ------'------'------'---+------+-------------+---'--- CN'11=57
20
--r- -r---r--r---1---r---r--r---1---r---r--r---1---r---1---r---1---r--
15
r------r------T------r------T------r------T------r------r
-
-
10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 213
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.00
0.00
12.00
4.30
0.75
30.70
13.00
5.00
1.11
8.67
14.00
5.31
1.28
4.83
15.00
5.53
1.40
3.68
16.00
5.70
1.50
2.95
17.00
5.84
1.58
2.53
18.00
5.97
1.66
2.27
19.00
6.08
1.72
1.99
20.00
6.17
1.78
1.70
21.00
6.25
1.83
1.57
22.00
6.33
1.88
1.52
23.00
6.41
1.93
1.47
24.00
6.48
1.97
1.42
25.00
6.48
1.97
0.00
26.00
6.48
1.97
0.00
27.00
6.48
1.97
0.00
28.00
6.48
1.97
0.00
29.00
6.48
1.97
0.00
30.00
6.48
1.97
0.00
31.00
6.48
1.97
0.00
32.00
6.48
1.97
0.00
33.00
6.48
1.97
0.00
34.00
6.48
1.97
0.00
35.00
6.48
1.97
0.00
36.00
6.48
1.97
0.00
37.00
6.48
1.97
0.00
38.00
6.48
1.97
0.00
39.00
6.48
1.97
0.00
40.00
6.48
1.97
0.00
41.00
6.48
1.97
0.00
42.00
6.48
1.97
0.00
43.00
6.48
1.97
0.00
44.00
6.48
1.97
0.00
45.00
6.48
1.97
0.00
46.00
6.48
1.97
0.00
47.00
6.48
1.97
0.00
48.00
6.48
1.97
0.00
49.00
6.48
1.97
0.00
50.00
6.48
1.97
0.00
51.00
6.48
1.97
0.00
52.00
6.48
1.97
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
1.97
0.00
54.00
6.48
1.97
0.00
55.00
6.48
1.97
0.00
56.00
6.48
1.97
0.00
57.00
6.48
1.97
0.00
58.00
6.48
1.97
0.00
59.00
6.48
1.97
0.00
60.00
6.48
1.97
0.00
61.00
6.48
1.97
0.00
62.00
6.48
1.97
0.00
63.00
6.48
1.97
0.00
64.00
6.48
1.97
0.00
65.00
6.48
1.97
0.00
66.00
6.48
1.97
0.00
67.00
6.48
1.97
0.00
68.00
6.48
1.97
0.00
69.00
6.48
1.97
0.00
70.00
6.48
1.97
0.00
71.00
6.48
1.97
0.00
72.00
6.48
1.97
0.00
73.00
6.48
1.97
0.00
74.00
6.48
1.97
0.00
75.00
6.48
1.97
0.00
76.00
6.48
1.97
0.00
77.00
6.48
1.97
0.00
78.00
6.48
1.97
0.00
79.00
6.48
1.97
0.00
80.00
6.48
1.97
0.00
81.00
6.48
1.97
0.00
82.00
6.48
1.97
0.00
83.00
6.48
1.97
0.00
84.00
6.48
1.97
0.00
85.00
6.48
1.97
0.00
86.00
6.48
1.97
0.00
87.00
6.48
1.97
0.00
88.00
6.48
1.97
0.00
89.00
6.48
1.97
0.00
90.00
6.48
1.97
0.00
91.00
6.48
1.97
0.00
92.00
6.48
1.97
0.00
93.00
6.48
1.97
0.00
94.00
6.48
1.97
0.00
95.00
6.48
1.97
0.00
96.00
6.48
1.97
0.00
97.00
6.48
1.97
0.00
98.00
6.48
1.97
0.00
99.00
6.48
1.97
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 214
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 8.89 cfs @ 12.21 hrs, Volume= 0.844 af, Depth= 1.80"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
8.89 ■Runoff
cfs _T - - - T
- - type I') 24-h'�r
50yr24hr Rainfall 6!48
7 ' Runoff Area=5.620 at
6 ' u11of 1�QCu,m�=�r844-af-
-- -- - --- --- I--- --- I__I_ 1 I'-
s 3
i�i�rro#f-Depth 1.8fl
LL------- ---+------}------------- ------- T&24:9 Mi-
4 -- -- - -------------- ---- r--! -- ! -- rt---!CN! =5$-
3
-�-- -------t------t------t------r--t---r--t---r--t---r--t---i--
-- --------T------T------r------r-- ---T---------T---i--T---i--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 215
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.00
0.00
12.00
4.30
0.65
3.59
13.00
5.00
0.98
1.61
14.00
5.31
1.14
0.85
15.00
5.53
1.26
0.64
16.00
5.70
1.35
0.52
17.00
5.84
1.43
0.44
18.00
5.97
1.50
0.40
19.00
6.08
1.56
0.35
20.00
6.17
1.62
0.30
21.00
6.25
1.66
0.27
22.00
6.33
1.71
0.27
23.00
6.41
1.76
0.26
24.00
6.48
1.80
0.25
25.00
6.48
1.80
0.00
26.00
6.48
1.80
0.00
27.00
6.48
1.80
0.00
28.00
6.48
1.80
0.00
29.00
6.48
1.80
0.00
30.00
6.48
1.80
0.00
31.00
6.48
1.80
0.00
32.00
6.48
1.80
0.00
33.00
6.48
1.80
0.00
34.00
6.48
1.80
0.00
35.00
6.48
1.80
0.00
36.00
6.48
1.80
0.00
37.00
6.48
1.80
0.00
38.00
6.48
1.80
0.00
39.00
6.48
1.80
0.00
40.00
6.48
1.80
0.00
41.00
6.48
1.80
0.00
42.00
6.48
1.80
0.00
43.00
6.48
1.80
0.00
44.00
6.48
1.80
0.00
45.00
6.48
1.80
0.00
46.00
6.48
1.80
0.00
47.00
6.48
1.80
0.00
48.00
6.48
1.80
0.00
49.00
6.48
1.80
0.00
50.00
6.48
1.80
0.00
51.00
6.48
1.80
0.00
52.00
6.48
1.80
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
1.80
0.00
54.00
6.48
1.80
0.00
55.00
6.48
1.80
0.00
56.00
6.48
1.80
0.00
57.00
6.48
1.80
0.00
58.00
6.48
1.80
0.00
59.00
6.48
1.80
0.00
60.00
6.48
1.80
0.00
61.00
6.48
1.80
0.00
62.00
6.48
1.80
0.00
63.00
6.48
1.80
0.00
64.00
6.48
1.80
0.00
65.00
6.48
1.80
0.00
66.00
6.48
1.80
0.00
67.00
6.48
1.80
0.00
68.00
6.48
1.80
0.00
69.00
6.48
1.80
0.00
70.00
6.48
1.80
0.00
71.00
6.48
1.80
0.00
72.00
6.48
1.80
0.00
73.00
6.48
1.80
0.00
74.00
6.48
1.80
0.00
75.00
6.48
1.80
0.00
76.00
6.48
1.80
0.00
77.00
6.48
1.80
0.00
78.00
6.48
1.80
0.00
79.00
6.48
1.80
0.00
80.00
6.48
1.80
0.00
81.00
6.48
1.80
0.00
82.00
6.48
1.80
0.00
83.00
6.48
1.80
0.00
84.00
6.48
1.80
0.00
85.00
6.48
1.80
0.00
86.00
6.48
1.80
0.00
87.00
6.48
1.80
0.00
88.00
6.48
1.80
0.00
89.00
6.48
1.80
0.00
90.00
6.48
1.80
0.00
91.00
6.48
1.80
0.00
92.00
6.48
1.80
0.00
93.00
6.48
1.80
0.00
94.00
6.48
1.80
0.00
95.00
6.48
1.80
0.00
96.00
6.48
1.80
0.00
97.00
6.48
1.80
0.00
98.00
6.48
1.80
0.00
99.00
6.48
1.80
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 216
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 58.79 cfs @ 11.96 hrs, Volume= 2.724 af, Depth= 2.52"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
65
58.79 cfs -----------+------+------+------ ------ ------ ------ --
60 '
- -- - ------------+------+------+--------------24-h;r--
55 I I
- -- - --- --- +--- +--- 50 r24hr-R� nftI1=6.48f'--
50
- -- - --- --- +--- +--- 45 Min dff Are+a=l2.980 at--
Runo VI Lump-
40 -- -- - - - - --- - - - --- ------ - - -
--- Q Y�
CI
--+-- -+---+--+---+--+---+--+------+------ +--- I---+------+------+--
w 35 Runoff Depth =2;52�'_
I I I I I I I I I I I
0 30 Tt.=5.0 wnih
--+ -+---r--+---r--+---r--+--- ---+--- ---+--- ---+---I---r---I----r--
25 --T---T------T---r--T------T------T---r--r------r------ rCNII=6� -
20
--�--ki
---I--7---I T---T---rTr---r--
15 7 T T r T r 10
---T T-- - ---T- +------T------T---
---T------T---I---T
5 I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 217
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.02
0.58
12.00
4.30
1.08
52.71
13.00
5.00
1.51
3.48
14.00
5.31
1.71
2.14
15.00
5.53
1.86
1.73
16.00
5.70
1.97
1.36
17.00
5.84
2.07
1.21
18.00
5.97
2.15
1.07
19.00
6.08
2.23
0.93
20.00
6.17
2.30
0.79
21.00
6.25
2.35
0.76
22.00
6.33
2.41
0.73
23.00
6.41
2.47
0.70
24.00
6.48
2.52
0.68
25.00
6.48
2.52
0.00
26.00
6.48
2.52
0.00
27.00
6.48
2.52
0.00
28.00
6.48
2.52
0.00
29.00
6.48
2.52
0.00
30.00
6.48
2.52
0.00
31.00
6.48
2.52
0.00
32.00
6.48
2.52
0.00
33.00
6.48
2.52
0.00
34.00
6.48
2.52
0.00
35.00
6.48
2.52
0.00
36.00
6.48
2.52
0.00
37.00
6.48
2.52
0.00
38.00
6.48
2.52
0.00
39.00
6.48
2.52
0.00
40.00
6.48
2.52
0.00
41.00
6.48
2.52
0.00
42.00
6.48
2.52
0.00
43.00
6.48
2.52
0.00
44.00
6.48
2.52
0.00
45.00
6.48
2.52
0.00
46.00
6.48
2.52
0.00
47.00
6.48
2.52
0.00
48.00
6.48
2.52
0.00
49.00
6.48
2.52
0.00
50.00
6.48
2.52
0.00
51.00
6.48
2.52
0.00
52.00
6.48
2.52
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
2.52
0.00
54.00
6.48
2.52
0.00
55.00
6.48
2.52
0.00
56.00
6.48
2.52
0.00
57.00
6.48
2.52
0.00
58.00
6.48
2.52
0.00
59.00
6.48
2.52
0.00
60.00
6.48
2.52
0.00
61.00
6.48
2.52
0.00
62.00
6.48
2.52
0.00
63.00
6.48
2.52
0.00
64.00
6.48
2.52
0.00
65.00
6.48
2.52
0.00
66.00
6.48
2.52
0.00
67.00
6.48
2.52
0.00
68.00
6.48
2.52
0.00
69.00
6.48
2.52
0.00
70.00
6.48
2.52
0.00
71.00
6.48
2.52
0.00
72.00
6.48
2.52
0.00
73.00
6.48
2.52
0.00
74.00
6.48
2.52
0.00
75.00
6.48
2.52
0.00
76.00
6.48
2.52
0.00
77.00
6.48
2.52
0.00
78.00
6.48
2.52
0.00
79.00
6.48
2.52
0.00
80.00
6.48
2.52
0.00
81.00
6.48
2.52
0.00
82.00
6.48
2.52
0.00
83.00
6.48
2.52
0.00
84.00
6.48
2.52
0.00
85.00
6.48
2.52
0.00
86.00
6.48
2.52
0.00
87.00
6.48
2.52
0.00
88.00
6.48
2.52
0.00
89.00
6.48
2.52
0.00
90.00
6.48
2.52
0.00
91.00
6.48
2.52
0.00
92.00
6.48
2.52
0.00
93.00
6.48
2.52
0.00
94.00
6.48
2.52
0.00
95.00
6.48
2.52
0.00
96.00
6.48
2.52
0.00
97.00
6.48
2.52
0.00
98.00
6.48
2.52
0.00
99.00
6.48
2.52
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 218
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 71.48 cfs @ 11.95 hrs, Volume= 3.398 af, Depth= 4.22"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
80 i
--J---'---�---'---I---1---1---'---L---'---1---'---L---'---I---'---L---'---L-- ■Runoff
75 71.48 cfs
70 tXpa-(I-2-4-h'r
--------------- y =6.48" -
--------------
a9 �2�h� Rairt� aII
60
7u rtoff-A�*ea=g.
ss 7 at -
50 - -- - -- ---I--- -- --!------ PTurtoff-vQluMp=1398-clf -
u 45 --J-- - i i
_ - -- -- -- -- -- -- -- --i -- Rtanaf#D tFT=4:22L'--
3 40 ------------------------------------------i yip
a 35 �. 1 1
30 ---,-- - li---,--- li---i--- li---i--- li---i--- li--------------------CN'�=-80
25
20
15
10
5 1
L--L-
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 219
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.01
7.00
0.64
0.01
0.12
8.00
0.78
0.03
0.25
9.00
0.95
0.07
0.54
10.00
1.17
0.14
0.91
11.00
1.52
0.30
2.12
12.00
4.30
2.29
61.29
13.00
5.00
2.90
3.58
14.00
5.31
3.17
2.15
15.00
5.53
3.36
1.72
16.00
5.70
3.51
1.33
17.00
5.84
3.64
1.17
18.00
5.97
3.75
1.04
19.00
6.08
3.85
0.90
20.00
6.17
3.93
0.76
21.00
6.25
4.01
0.72
22.00
6.33
4.08
0.69
23.00
6.41
4.15
0.66
24.00
6.48
4.22
0.64
25.00
6.48
4.22
0.00
26.00
6.48
4.22
0.00
27.00
6.48
4.22
0.00
28.00
6.48
4.22
0.00
29.00
6.48
4.22
0.00
30.00
6.48
4.22
0.00
31.00
6.48
4.22
0.00
32.00
6.48
4.22
0.00
33.00
6.48
4.22
0.00
34.00
6.48
4.22
0.00
35.00
6.48
4.22
0.00
36.00
6.48
4.22
0.00
37.00
6.48
4.22
0.00
38.00
6.48
4.22
0.00
39.00
6.48
4.22
0.00
40.00
6.48
4.22
0.00
41.00
6.48
4.22
0.00
42.00
6.48
4.22
0.00
43.00
6.48
4.22
0.00
44.00
6.48
4.22
0.00
45.00
6.48
4.22
0.00
46.00
6.48
4.22
0.00
47.00
6.48
4.22
0.00
48.00
6.48
4.22
0.00
49.00
6.48
4.22
0.00
50.00
6.48
4.22
0.00
51.00
6.48
4.22
0.00
52.00
6.48
4.22
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
4.22
0.00
54.00
6.48
4.22
0.00
55.00
6.48
4.22
0.00
56.00
6.48
4.22
0.00
57.00
6.48
4.22
0.00
58.00
6.48
4.22
0.00
59.00
6.48
4.22
0.00
60.00
6.48
4.22
0.00
61.00
6.48
4.22
0.00
62.00
6.48
4.22
0.00
63.00
6.48
4.22
0.00
64.00
6.48
4.22
0.00
65.00
6.48
4.22
0.00
66.00
6.48
4.22
0.00
67.00
6.48
4.22
0.00
68.00
6.48
4.22
0.00
69.00
6.48
4.22
0.00
70.00
6.48
4.22
0.00
71.00
6.48
4.22
0.00
72.00
6.48
4.22
0.00
73.00
6.48
4.22
0.00
74.00
6.48
4.22
0.00
75.00
6.48
4.22
0.00
76.00
6.48
4.22
0.00
77.00
6.48
4.22
0.00
78.00
6.48
4.22
0.00
79.00
6.48
4.22
0.00
80.00
6.48
4.22
0.00
81.00
6.48
4.22
0.00
82.00
6.48
4.22
0.00
83.00
6.48
4.22
0.00
84.00
6.48
4.22
0.00
85.00
6.48
4.22
0.00
86.00
6.48
4.22
0.00
87.00
6.48
4.22
0.00
88.00
6.48
4.22
0.00
89.00
6.48
4.22
0.00
90.00
6.48
4.22
0.00
91.00
6.48
4.22
0.00
92.00
6.48
4.22
0.00
93.00
6.48
4.22
0.00
94.00
6.48
4.22
0.00
95.00
6.48
4.22
0.00
96.00
6.48
4.22
0.00
97.00
6.48
4.22
0.00
98.00
6.48
4.22
0.00
99.00
6.48
4.22
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 220
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 49.92 cfs @ 11.95 hrs, Volume= 2.364 af, Depth= 4.11"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
----------------------------------------------------
55 i i i i i i i i i i i i i i i i i i i � Runoff
49.92 cfs - -'I- - - - - -'I- - - t - - -'I- - - t - - -'I- - - Y - - -'I- - - r - - -'I- - - t - - -'I - - - r - - -'I - - - r -
50t e I24-hr
45
50yr24hr Rainfall =6;48nr
40 Runoff Area=6.900 at
35 Runoff VQIu'Imq=2'L36'14 clf
--T- -------------7------T------T---I---T---I---T---I---T---I---T--
30- Runoff Depth=4;11"
3 -- ---L---1---L--- 1--- i--- 1--- L--- '---1--- ---L--- ' --- L- -- L- ' ---L--
25 Tt.=5.0 min
--�-- - i ---II -- i---I--- i ---II -- i---I--- i- - -I--- i---I--- I ---I--- ;CN'I�7$ -
20
--J-- -L---1---L---1---1---1---1------1---I---L---I---L---I---L---I---L--
15
- 7-- _ 7 T T T T 7 T--
10
-- ---L---1---L---1---1- L
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 221
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.06
8.00
0.78
0.02
0.15
9.00
0.95
0.06
0.35
10.00
1.17
0.12
0.60
11.00
1.52
0.27
1.43
12.00
4.30
2.21
42.90
13.00
5.00
2.80
2.52
14.00
5.31
3.07
1.51
15.00
5.53
3.26
1.21
16.00
5.70
3.42
0.94
17.00
5.84
3.54
0.83
18.00
5.97
3.65
0.73
19.00
6.08
3.75
0.63
20.00
6.17
3.83
0.53
21.00
6.25
3.91
0.51
22.00
6.33
3.98
0.49
23.00
6.41
4.05
0.47
24.00
6.48
4.11
0.45
25.00
6.48
4.11
0.00
26.00
6.48
4.11
0.00
27.00
6.48
4.11
0.00
28.00
6.48
4.11
0.00
29.00
6.48
4.11
0.00
30.00
6.48
4.11
0.00
31.00
6.48
4.11
0.00
32.00
6.48
4.11
0.00
33.00
6.48
4.11
0.00
34.00
6.48
4.11
0.00
35.00
6.48
4.11
0.00
36.00
6.48
4.11
0.00
37.00
6.48
4.11
0.00
38.00
6.48
4.11
0.00
39.00
6.48
4.11
0.00
40.00
6.48
4.11
0.00
41.00
6.48
4.11
0.00
42.00
6.48
4.11
0.00
43.00
6.48
4.11
0.00
44.00
6.48
4.11
0.00
45.00
6.48
4.11
0.00
46.00
6.48
4.11
0.00
47.00
6.48
4.11
0.00
48.00
6.48
4.11
0.00
49.00
6.48
4.11
0.00
50.00
6.48
4.11
0.00
51.00
6.48
4.11
0.00
52.00
6.48
4.11
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
4.11
0.00
54.00
6.48
4.11
0.00
55.00
6.48
4.11
0.00
56.00
6.48
4.11
0.00
57.00
6.48
4.11
0.00
58.00
6.48
4.11
0.00
59.00
6.48
4.11
0.00
60.00
6.48
4.11
0.00
61.00
6.48
4.11
0.00
62.00
6.48
4.11
0.00
63.00
6.48
4.11
0.00
64.00
6.48
4.11
0.00
65.00
6.48
4.11
0.00
66.00
6.48
4.11
0.00
67.00
6.48
4.11
0.00
68.00
6.48
4.11
0.00
69.00
6.48
4.11
0.00
70.00
6.48
4.11
0.00
71.00
6.48
4.11
0.00
72.00
6.48
4.11
0.00
73.00
6.48
4.11
0.00
74.00
6.48
4.11
0.00
75.00
6.48
4.11
0.00
76.00
6.48
4.11
0.00
77.00
6.48
4.11
0.00
78.00
6.48
4.11
0.00
79.00
6.48
4.11
0.00
80.00
6.48
4.11
0.00
81.00
6.48
4.11
0.00
82.00
6.48
4.11
0.00
83.00
6.48
4.11
0.00
84.00
6.48
4.11
0.00
85.00
6.48
4.11
0.00
86.00
6.48
4.11
0.00
87.00
6.48
4.11
0.00
88.00
6.48
4.11
0.00
89.00
6.48
4.11
0.00
90.00
6.48
4.11
0.00
91.00
6.48
4.11
0.00
92.00
6.48
4.11
0.00
93.00
6.48
4.11
0.00
94.00
6.48
4.11
0.00
95.00
6.48
4.11
0.00
96.00
6.48
4.11
0.00
97.00
6.48
4.11
0.00
98.00
6.48
4.11
0.00
99.00
6.48
4.11
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 222
Summary for Subcatchment 11S: Bypass #1
Runoff = 18.10 cfs @ 12.10 hrs, Volume= 1.258 af, Depth= 2.71"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN
Description
4.560 58
Woods/grass comb., Good, HSG B
1.020 98
Water Surface, HSG B
5.580 65
Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
16.9
Direct Entry,
19
18
17
1E
1E
14
12
12
11
3 1C
o
LL
Subcatchment 11S: Bypass #1
Hydrograph
--J------J---1---J---------+---I-- ------L------L--
--J---I---L---I---L---I---L---I---L---I---L---I---L---I---L---I---L---I---L-- ■Runoff
- 18.10 cfs--II------II------II------II------II------II------II------II--- --
--+--+---+--+---+--+---+--+------+---+--+---I---Tye 24-h;r--
- - ----'I---------rt------t------50yr24hr t�infal1=6 U''--
-_- -- T- - T-RhnrOff=Aeea= .5$0at--
--J
--
I----I------I--- ---- I
I - - - I I I - -FI�u rroff-VQl 'umq=111,.25'1,6-
---I-----------------I---T - - -I
-- I-Runaf# Depth=2:71y
--J---�---I---�---I---L---I---L---I---L---I---L---I---L�Ci-�1��-�-��1--
J - - - - - - J - - - - - - L - - - - - - -IL
- - -I
I I
- - + - - - + - - - I- - - + - - - - - - + - - - I- - - + - - --
--T--------------T------T------T---I---T---I---T------T------T--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 223
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.02
11.00
1.52
0.03
0.26
12.00
4.30
1.20
13.30
13.00
5.00
1.66
1.81
14.00
5.31
1.87
1.05
15.00
5.53
2.02
0.81
16.00
5.70
2.14
0.64
17.00
5.84
2.24
0.55
18.00
5.97
2.33
0.49
19.00
6.08
2.41
0.43
20.00
6.17
2.47
0.37
21.00
6.25
2.54
0.34
22.00
6.33
2.59
0.33
23.00
6.41
2.65
0.32
24.00
6.48
2.71
0.30
25.00
6.48
2.71
0.00
26.00
6.48
2.71
0.00
27.00
6.48
2.71
0.00
28.00
6.48
2.71
0.00
29.00
6.48
2.71
0.00
30.00
6.48
2.71
0.00
31.00
6.48
2.71
0.00
32.00
6.48
2.71
0.00
33.00
6.48
2.71
0.00
34.00
6.48
2.71
0.00
35.00
6.48
2.71
0.00
36.00
6.48
2.71
0.00
37.00
6.48
2.71
0.00
38.00
6.48
2.71
0.00
39.00
6.48
2.71
0.00
40.00
6.48
2.71
0.00
41.00
6.48
2.71
0.00
42.00
6.48
2.71
0.00
43.00
6.48
2.71
0.00
44.00
6.48
2.71
0.00
45.00
6.48
2.71
0.00
46.00
6.48
2.71
0.00
47.00
6.48
2.71
0.00
48.00
6.48
2.71
0.00
49.00
6.48
2.71
0.00
50.00
6.48
2.71
0.00
51.00
6.48
2.71
0.00
52.00
6.48
2.71
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
2.71
0.00
54.00
6.48
2.71
0.00
55.00
6.48
2.71
0.00
56.00
6.48
2.71
0.00
57.00
6.48
2.71
0.00
58.00
6.48
2.71
0.00
59.00
6.48
2.71
0.00
60.00
6.48
2.71
0.00
61.00
6.48
2.71
0.00
62.00
6.48
2.71
0.00
63.00
6.48
2.71
0.00
64.00
6.48
2.71
0.00
65.00
6.48
2.71
0.00
66.00
6.48
2.71
0.00
67.00
6.48
2.71
0.00
68.00
6.48
2.71
0.00
69.00
6.48
2.71
0.00
70.00
6.48
2.71
0.00
71.00
6.48
2.71
0.00
72.00
6.48
2.71
0.00
73.00
6.48
2.71
0.00
74.00
6.48
2.71
0.00
75.00
6.48
2.71
0.00
76.00
6.48
2.71
0.00
77.00
6.48
2.71
0.00
78.00
6.48
2.71
0.00
79.00
6.48
2.71
0.00
80.00
6.48
2.71
0.00
81.00
6.48
2.71
0.00
82.00
6.48
2.71
0.00
83.00
6.48
2.71
0.00
84.00
6.48
2.71
0.00
85.00
6.48
2.71
0.00
86.00
6.48
2.71
0.00
87.00
6.48
2.71
0.00
88.00
6.48
2.71
0.00
89.00
6.48
2.71
0.00
90.00
6.48
2.71
0.00
91.00
6.48
2.71
0.00
92.00
6.48
2.71
0.00
93.00
6.48
2.71
0.00
94.00
6.48
2.71
0.00
95.00
6.48
2.71
0.00
96.00
6.48
2.71
0.00
97.00
6.48
2.71
0.00
98.00
6.48
2.71
0.00
99.00
6.48
2.71
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 224
Summary for Subcatchment 12S: Bypass #2
Runoff = 2.18 cfs @ 12.20 hrs, Volume= 0.199 af, Depth= 2.06"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
I I I I I I I I I I I I I I I I I I I ■Runoff
2.18 cfs
-------7------T------r---'I-- -- - Type II 24 fir-
2 50yr2�4hr Rainfall' 6!487
Runoff Area=1.160 at
Runoff VQI6mq=6r159 clf
Runoff Depth'I, 2!067
LL I I I I I I
1 I I I I I I I I I I I I I I
CN'I=50
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 225
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.00
0.00
12.00
4.30
0.80
0.96
13.00
5.00
1.17
0.37
14.00
5.31
1.35
0.19
15.00
5.53
1.47
0.15
16.00
5.70
1.57
0.12
17.00
5.84
1.66
0.10
18.00
5.97
1.74
0.09
19.00
6.08
1.80
0.08
20.00
6.17
1.86
0.07
21.00
6.25
1.92
0.06
22.00
6.33
1.97
0.06
23.00
6.41
2.02
0.06
24.00
6.48
2.06
0.06
25.00
6.48
2.06
0.00
26.00
6.48
2.06
0.00
27.00
6.48
2.06
0.00
28.00
6.48
2.06
0.00
29.00
6.48
2.06
0.00
30.00
6.48
2.06
0.00
31.00
6.48
2.06
0.00
32.00
6.48
2.06
0.00
33.00
6.48
2.06
0.00
34.00
6.48
2.06
0.00
35.00
6.48
2.06
0.00
36.00
6.48
2.06
0.00
37.00
6.48
2.06
0.00
38.00
6.48
2.06
0.00
39.00
6.48
2.06
0.00
40.00
6.48
2.06
0.00
41.00
6.48
2.06
0.00
42.00
6.48
2.06
0.00
43.00
6.48
2.06
0.00
44.00
6.48
2.06
0.00
45.00
6.48
2.06
0.00
46.00
6.48
2.06
0.00
47.00
6.48
2.06
0.00
48.00
6.48
2.06
0.00
49.00
6.48
2.06
0.00
50.00
6.48
2.06
0.00
51.00
6.48
2.06
0.00
52.00
6.48
2.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
2.06
0.00
54.00
6.48
2.06
0.00
55.00
6.48
2.06
0.00
56.00
6.48
2.06
0.00
57.00
6.48
2.06
0.00
58.00
6.48
2.06
0.00
59.00
6.48
2.06
0.00
60.00
6.48
2.06
0.00
61.00
6.48
2.06
0.00
62.00
6.48
2.06
0.00
63.00
6.48
2.06
0.00
64.00
6.48
2.06
0.00
65.00
6.48
2.06
0.00
66.00
6.48
2.06
0.00
67.00
6.48
2.06
0.00
68.00
6.48
2.06
0.00
69.00
6.48
2.06
0.00
70.00
6.48
2.06
0.00
71.00
6.48
2.06
0.00
72.00
6.48
2.06
0.00
73.00
6.48
2.06
0.00
74.00
6.48
2.06
0.00
75.00
6.48
2.06
0.00
76.00
6.48
2.06
0.00
77.00
6.48
2.06
0.00
78.00
6.48
2.06
0.00
79.00
6.48
2.06
0.00
80.00
6.48
2.06
0.00
81.00
6.48
2.06
0.00
82.00
6.48
2.06
0.00
83.00
6.48
2.06
0.00
84.00
6.48
2.06
0.00
85.00
6.48
2.06
0.00
86.00
6.48
2.06
0.00
87.00
6.48
2.06
0.00
88.00
6.48
2.06
0.00
89.00
6.48
2.06
0.00
90.00
6.48
2.06
0.00
91.00
6.48
2.06
0.00
92.00
6.48
2.06
0.00
93.00
6.48
2.06
0.00
94.00
6.48
2.06
0.00
95.00
6.48
2.06
0.00
96.00
6.48
2.06
0.00
97.00
6.48
2.06
0.00
98.00
6.48
2.06
0.00
99.00
6.48
2.06
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 226
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 16.20 cfs @ 12.16 hrs, Volume= 1.361 af, Depth= 1.80"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
18 -- -----------------+------+------+------------+-----------�-- ■Runoff
17 16.20 cfs-----------i------i------------L---------------w---L--
16 -- ----'---'---'---'---'----------'---'---'---'------'rype-0-211 -hl� -
1 1�"
15---I--- - ------ ---I--- I I
---- -----------------T-----il----- T------I Ir11 ---II---rI
14 --- SOYr24qRainfaR=6.4v'
r
1---1------1-I---1+-I--- T-I---
13 ---T--R-urtof-Ater9.070-ad --
-
-
1121
--- +-- -- +------+' --+------+' --+------+' --+------' --- Iu-+Vi+---I-=- 1+ I1-+
riou'mQ -
^ � I I I I I I I I I I I I I I I I I I
10 -- - - --- - --- - --- + -- --- + --- R naf# Depth=1;801'--
3 9 -- $ -'-----------'- '---'-'---'- '---
LL I I I '---'---'---T' c- 2O.7- wnih
- - - - - - r_
7 ---
-
- -- --T------T------T------T------T------T------CM''=55-
5 --�- - ----------I---rt---I---+------+------t------+------r------r--
4 ---- -------L---1---1---1---+---'---+------L------L------L------L--
I I I I I I I I I I I I I I I I I I
3 --L-- L---1---L---1---1---1---1---'---1------L------L------L------L--
2
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 227
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.00
0.00
12.00
4.30
0.65
8.46
13.00
5.00
0.98
2.34
14.00
5.31
1.14
1.33
15.00
5.53
1.26
1.02
16.00
5.70
1.35
0.82
17.00
5.84
1.43
0.71
18.00
5.97
1.50
0.63
19.00
6.08
1.56
0.56
20.00
6.17
1.62
0.48
21.00
6.25
1.66
0.44
22.00
6.33
1.71
0.43
23.00
6.41
1.76
0.41
24.00
6.48
1.80
0.40
25.00
6.48
1.80
0.00
26.00
6.48
1.80
0.00
27.00
6.48
1.80
0.00
28.00
6.48
1.80
0.00
29.00
6.48
1.80
0.00
30.00
6.48
1.80
0.00
31.00
6.48
1.80
0.00
32.00
6.48
1.80
0.00
33.00
6.48
1.80
0.00
34.00
6.48
1.80
0.00
35.00
6.48
1.80
0.00
36.00
6.48
1.80
0.00
37.00
6.48
1.80
0.00
38.00
6.48
1.80
0.00
39.00
6.48
1.80
0.00
40.00
6.48
1.80
0.00
41.00
6.48
1.80
0.00
42.00
6.48
1.80
0.00
43.00
6.48
1.80
0.00
44.00
6.48
1.80
0.00
45.00
6.48
1.80
0.00
46.00
6.48
1.80
0.00
47.00
6.48
1.80
0.00
48.00
6.48
1.80
0.00
49.00
6.48
1.80
0.00
50.00
6.48
1.80
0.00
51.00
6.48
1.80
0.00
52.00
6.48
1.80
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
1.80
0.00
54.00
6.48
1.80
0.00
55.00
6.48
1.80
0.00
56.00
6.48
1.80
0.00
57.00
6.48
1.80
0.00
58.00
6.48
1.80
0.00
59.00
6.48
1.80
0.00
60.00
6.48
1.80
0.00
61.00
6.48
1.80
0.00
62.00
6.48
1.80
0.00
63.00
6.48
1.80
0.00
64.00
6.48
1.80
0.00
65.00
6.48
1.80
0.00
66.00
6.48
1.80
0.00
67.00
6.48
1.80
0.00
68.00
6.48
1.80
0.00
69.00
6.48
1.80
0.00
70.00
6.48
1.80
0.00
71.00
6.48
1.80
0.00
72.00
6.48
1.80
0.00
73.00
6.48
1.80
0.00
74.00
6.48
1.80
0.00
75.00
6.48
1.80
0.00
76.00
6.48
1.80
0.00
77.00
6.48
1.80
0.00
78.00
6.48
1.80
0.00
79.00
6.48
1.80
0.00
80.00
6.48
1.80
0.00
81.00
6.48
1.80
0.00
82.00
6.48
1.80
0.00
83.00
6.48
1.80
0.00
84.00
6.48
1.80
0.00
85.00
6.48
1.80
0.00
86.00
6.48
1.80
0.00
87.00
6.48
1.80
0.00
88.00
6.48
1.80
0.00
89.00
6.48
1.80
0.00
90.00
6.48
1.80
0.00
91.00
6.48
1.80
0.00
92.00
6.48
1.80
0.00
93.00
6.48
1.80
0.00
94.00
6.48
1.80
0.00
95.00
6.48
1.80
0.00
96.00
6.48
1.80
0.00
97.00
6.48
1.80
0.00
98.00
6.48
1.80
0.00
99.00
6.48
1.80
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 228
Summary for Subcatchment 14S: Post Development #3
Runoff = 16.05 cfs @ 12.16 hrs, Volume= 1.349 af, Depth= 1.80"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 50yr24hr Rainfall=6.48"
Area (ac) CN
Description
8.670 55
Woods, Good, HSG B
0.320 58
Woods/grass comb., Good, HSG B
8.990 55
Weighted Average
8.990
100.00% Pervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
20.7
Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
--y---Ir--�---Ir--�---Ir--rt---Ir--+---Ii---+---Ii---r---Ii---+---Ii---r---I---r-- ■Runoff
17 - 16.05 cfs------------------------------------------------------- --
16 --L- - - L- - L- - T- - T- - L- -
15 6
13-- -II -- - - - -II -- I -- T --Runoff-1�1ee& .9 9W at--
12
11
-- -------------- - --------+------F Un4_f-V_QIUm =1 34119- f -
u 10 -- -- - ------ ------------+------+- --
Ru-noff Depth=11801'
3 9 --L--L---I---L---1---1---1---1---'---1---'---L---'---LTT//-►►?-A' nL 7-'L�L�-----77-yL�L�7--
6 ---I- - T---I--- T---I--- T---I--- T---I--- T--------------------III= -
--T- -------T--- ---T------T--- ---T--- ---T---I--- T--- ---T------T--
5 --+-- -+------+------+------+------+------+------+------+------+--
4 --�-- ------------------------------+------+-----------+--
3 --J-----L--------L------L------L------L------L--J---L------L--
2
----- ---------------------------
1 I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 229
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.14
0.00
0.00
3.00
0.22
0.00
0.00
4.00
0.31
0.00
0.00
5.00
0.41
0.00
0.00
6.00
0.52
0.00
0.00
7.00
0.64
0.00
0.00
8.00
0.78
0.00
0.00
9.00
0.95
0.00
0.00
10.00
1.17
0.00
0.00
11.00
1.52
0.00
0.00
12.00
4.30
0.65
8.38
13.00
5.00
0.98
2.31
14.00
5.31
1.14
1.32
15.00
5.53
1.26
1.01
16.00
5.70
1.35
0.82
17.00
5.84
1.43
0.70
18.00
5.97
1.50
0.63
19.00
6.08
1.56
0.55
20.00
6.17
1.62
0.47
21.00
6.25
1.66
0.44
22.00
6.33
1.71
0.42
23.00
6.41
1.76
0.41
24.00
6.48
1.80
0.40
25.00
6.48
1.80
0.00
26.00
6.48
1.80
0.00
27.00
6.48
1.80
0.00
28.00
6.48
1.80
0.00
29.00
6.48
1.80
0.00
30.00
6.48
1.80
0.00
31.00
6.48
1.80
0.00
32.00
6.48
1.80
0.00
33.00
6.48
1.80
0.00
34.00
6.48
1.80
0.00
35.00
6.48
1.80
0.00
36.00
6.48
1.80
0.00
37.00
6.48
1.80
0.00
38.00
6.48
1.80
0.00
39.00
6.48
1.80
0.00
40.00
6.48
1.80
0.00
41.00
6.48
1.80
0.00
42.00
6.48
1.80
0.00
43.00
6.48
1.80
0.00
44.00
6.48
1.80
0.00
45.00
6.48
1.80
0.00
46.00
6.48
1.80
0.00
47.00
6.48
1.80
0.00
48.00
6.48
1.80
0.00
49.00
6.48
1.80
0.00
50.00
6.48
1.80
0.00
51.00
6.48
1.80
0.00
52.00
6.48
1.80
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.48
1.80
0.00
54.00
6.48
1.80
0.00
55.00
6.48
1.80
0.00
56.00
6.48
1.80
0.00
57.00
6.48
1.80
0.00
58.00
6.48
1.80
0.00
59.00
6.48
1.80
0.00
60.00
6.48
1.80
0.00
61.00
6.48
1.80
0.00
62.00
6.48
1.80
0.00
63.00
6.48
1.80
0.00
64.00
6.48
1.80
0.00
65.00
6.48
1.80
0.00
66.00
6.48
1.80
0.00
67.00
6.48
1.80
0.00
68.00
6.48
1.80
0.00
69.00
6.48
1.80
0.00
70.00
6.48
1.80
0.00
71.00
6.48
1.80
0.00
72.00
6.48
1.80
0.00
73.00
6.48
1.80
0.00
74.00
6.48
1.80
0.00
75.00
6.48
1.80
0.00
76.00
6.48
1.80
0.00
77.00
6.48
1.80
0.00
78.00
6.48
1.80
0.00
79.00
6.48
1.80
0.00
80.00
6.48
1.80
0.00
81.00
6.48
1.80
0.00
82.00
6.48
1.80
0.00
83.00
6.48
1.80
0.00
84.00
6.48
1.80
0.00
85.00
6.48
1.80
0.00
86.00
6.48
1.80
0.00
87.00
6.48
1.80
0.00
88.00
6.48
1.80
0.00
89.00
6.48
1.80
0.00
90.00
6.48
1.80
0.00
91.00
6.48
1.80
0.00
92.00
6.48
1.80
0.00
93.00
6.48
1.80
0.00
94.00
6.48
1.80
0.00
95.00
6.48
1.80
0.00
96.00
6.48
1.80
0.00
97.00
6.48
1.80
0.00
98.00
6.48
1.80
0.00
99.00
6.48
1.80
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 230
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 2.52" for 50yr24hr event
Inflow = 58.79 cfs @ 11.96 hrs, Volume= 2.724 of
Outflow = 2.00 cfs @ 14.24 hrs, Volume= 1.965 af, Atten= 97%, Lag= 136.5 min
Primary = 2.00 cfs @ 14.24 hrs, Volume= 1.965 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 570.47' @ 14.24 hrs Surf.Area= 22,611 sf Storage= 73,402 cf
Plug -Flow detention time= 1,316.3 min calculated for 1.965 of (72% of inflow)
Center -of -Mass det. time= 1,210.7 min ( 2,057.2 - 846.4 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=2.00 cfs @ 14.24 hrs HW=570.47' (Free Discharge)
L1=RCP_Round 36" (Passes 2.00 cfs of 90.91 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.15 cfs @ 9.51 fps)
3=Custom Weir/Orifice (Weir Controls 1.85 cfs @ 2.00 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 231
Hydrograph
--L--L--1--1--L--J--J---1---1---1---1---1---L--L--L--L--1--1--L--
58.79 cfS -r--r--r--r-
- 1
-1---1----l-.w-I�--�-,b------------------------
■Inflow
Ena��Ouff Infloww
65■
-- -
- --
------------------hifl
vv Area-1 2.980-ae-
Ir-
■Primary
Secondary
60
--r-
-+--+------
---1---1---1---1---
-r--Ir r--�- +
eak� E_ lev-570 47
$tor a=7,3}402-c�f
50
-- -
-+--+--
-- -----------------
-
45
40
I---Ir--Ir--r--r--r
w
35
--r-
-t--t--rt--
-- ---li---li---li---li---
--------
0 30
LL
-- -
- --
-----------------------
-- -- -- -- -- -- -- --
25
20
- - T -
1
- T - - T
1
- - T - - T - - T - - -I- - -I- - -I-
- -I- - -I - - T - - T - - T - - T - - T-
15
10
2.00 cfS
0.00
cfS
0
0
5 10 15 20 25 30
35 40 45 50 55 60
65 70 75 80 85 90 95
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 232
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 233
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.00
0
566.50
0.00
0.00
0.00
12.50
5.42
62,323
569.97
0.14
0.14
0.00
15.00
1.73
73,126
570.46
1.91
1.91
0.00
17.50
1.14
71,131
570.37
1.30
1.30
0.00
20.00
0.79
69,796
570.31
0.94
0.94
0.00
22.50
0.72
69,060
570.28
0.76
0.76
0.00
25.00
0.00
67,134
570.19
0.37
0.37
0.00
27.50
0.00
65,145
570.10
0.14
0.14
0.00
30.00
0.00
63,867
570.04
0.14
0.14
0.00
32.50
0.00
62,600
569.98
0.14
0.14
0.00
35.00
0.00
61,344
569.92
0.14
0.14
0.00
37.50
0.00
60,098
569.87
0.14
0.14
0.00
40.00
0.00
58,864
569.81
0.14
0.14
0.00
42.50
0.00
57,641
569.75
0.14
0.14
0.00
45.00
0.00
56,428
569.69
0.13
0.13
0.00
47.50
0.00
55,227
569.63
0.13
0.13
0.00
50.00
0.00
54,037
569.58
0.13
0.13
0.00
52.50
0.00
52,859
569.52
0.13
0.13
0.00
55.00
0.00
51,691
569.46
0.13
0.13
0.00
57.50
0.00
50,535
569.41
0.13
0.13
0.00
60.00
0.00
49,391
569.35
0.13
0.13
0.00
62.50
0.00
48,258
569.29
0.13
0.13
0.00
65.00
0.00
47,136
569.24
0.12
0.12
0.00
67.50
0.00
46,027
569.18
0.12
0.12
0.00
70.00
0.00
44,929
569.13
0.12
0.12
0.00
72.50
0.00
43,842
569.07
0.12
0.12
0.00
75.00
0.00
42,768
569.02
0.12
0.12
0.00
77.50
0.00
41,705
568.96
0.12
0.12
0.00
80.00
0.00
40,655
568.91
0.12
0.12
0.00
82.50
0.00
39,617
568.86
0.11
0.11
0.00
85.00
0.00
38,590
568.80
0.11
0.11
0.00
87.50
0.00
37,576
568.75
0.11
0.11
0.00
90.00
0.00
36,574
568.70
0.11
0.11
0.00
92.50
0.00
35,585
568.64
0.11
0.11
0.00
95.00
0.00
34,608
568.59
0.11
0.11
0.00
97.50
0.00
33,643
568.54
0.11
0.11
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 234
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 235
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 236
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 4.22" for 50yr24hr event
Inflow = 71.48 cfs @ 11.95 hrs, Volume= 3.398 of
Outflow = 37.82 cfs @ 12.05 hrs, Volume= 3.385 af, Atten= 47%, Lag= 6.0 min
Primary = 37.82 cfs @ 12.05 hrs, Volume= 3.385 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 562.91' @ 12.05 hrs Surf.Area= 19,196 sf Storage= 64,367 cf
Plug -Flow detention time= 545.6 min calculated for 3.385 of (100% of inflow)
Center -of -Mass det. time= 543.2 min ( 1,350.3 - 807.0 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=37.28 cfs @ 12.05 hrs HW=562.90' (Free Discharge)
L1=RCP_Round 36" (Passes 37.28 cfs of 108.92 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.34 cfs @ 9.98 fps)
3=Custom Weir/Orifice (Orifice Controls 6.32 cfs @ 5.50 fps)
4=Top of Box (Weir Controls 30.62 cfs @ 2.74 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 237
Hydrograph
71.48 cfs
-+--+--+--+------------------+--+--r--r--+--+--+--
■Inflow
❑outflow
- --
--
--
---1---1---1---1---1---
-- -- -- -- -- -- --
■ Primary
80
-11ftf]ow�Area=9.67oiaC
1
■Secondary
75
- -----------------------Flea
---
70
65
- --
-
1I
I 1 -
-64367e#-
�—,
60
-r-- T--T
--r
-
-r --r-
-I---I---I---I---i
--r--r--r--r--r--r--r-
55
--r--T--T--rt--
--
---1i---1i---1i---1i---1r--1r--1r--r--r--r--rt--rt--
50
w 45
+--+--+--+--+------------------r--r--r--r--+--+--+--
37.82 cfs - --
--
--
--
------------------1
--1 -- -- -- -- -- --
V
40
-1--1--s--J--J-
-1---1---1---1---1---L--L--L--L--1--1--1--
0 LL 35
- -1--1----J--J---1---1---1---1---1---L--+--L--L--1--1--1--
30
- -
---1---1---1---1---1---1---
25
- ----1---11---1---1---1---1---;--
20
T -
-T -
- --
--
---1---1---1------T--T--T--T--T--T--T--T--
15
10
0.00 cfs
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 238
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 239
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.19
496
558.55
0.01
0.01
0.00
10.00
0.91
4,344
558.92
0.09
0.09
0.00
12.50
5.69
53,911
562.34
7.88
7.88
0.00
15.00
1.72
44,394
561.80
2.41
2.41
0.00
17.50
1.11
40,069
561.54
1.40
1.40
0.00
20.00
0.76
37,943
561.41
0.97
0.97
0.00
22.50
0.68
36,751
561.33
0.76
0.76
0.00
25.00
0.00
34,532
561.19
0.44
0.44
0.00
27.50
0.00
31,778
561.01
0.25
0.25
0.00
30.00
0.00
29,523
560.86
0.25
0.25
0.00
32.50
0.00
27,341
560.71
0.24
0.24
0.00
35.00
0.00
25,234
560.57
0.23
0.23
0.00
37.50
0.00
23,203
560.42
0.22
0.22
0.00
40.00
0.00
21,250
560.28
0.21
0.21
0.00
42.50
0.00
19,376
560.14
0.20
0.20
0.00
45.00
0.00
17,583
560.01
0.19
0.19
0.00
47.50
0.00
15,873
559.88
0.19
0.19
0.00
50.00
0.00
14,248
559.75
0.18
0.18
0.00
52.50
0.00
12,708
559.63
0.17
0.17
0.00
55.00
0.00
11,256
559.51
0.16
0.16
0.00
57.50
0.00
9,894
559.40
0.15
0.15
0.00
60.00
0.00
8,622
559.29
0.14
0.14
0.00
62.50
0.00
7,443
559.19
0.13
0.13
0.00
65.00
0.00
6,358
559.10
0.12
0.12
0.00
67.50
0.00
5,368
559.01
0.10
0.10
0.00
70.00
0.00
4,476
558.93
0.09
0.09
0.00
72.50
0.00
3,683
558.86
0.08
0.08
0.00
75.00
0.00
2,991
558.79
0.07
0.07
0.00
77.50
0.00
2,401
558.74
0.06
0.06
0.00
80.00
0.00
1,915
558.69
0.05
0.05
0.00
82.50
0.00
1,539
558.65
0.04
0.04
0.00
85.00
0.00
1,262
558.63
0.03
0.03
0.00
87.50
0.00
1,053
558.61
0.02
0.02
0.00
90.00
0.00
893
558.59
0.02
0.02
0.00
92.50
0.00
771
558.58
0.01
0.01
0.00
95.00
0.00
678
558.57
0.01
0.01
0.00
97.50
0.00
606
558.56
0.01
0.01
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 240
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 241
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 242
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 4.11" for 50yr24hr event
Inflow =
49.92 cfs @
11.95 hrs,
Volume=
2.364 of
Outflow =
5.06 cfs @
12.38 hrs,
Volume=
2.198 af, Atten= 90%, Lag= 25.3 min
Primary =
5.06 cfs @
12.38 hrs,
Volume=
2.198 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 572.86' @ 12.38 hrs Surf.Area= 15,694 sf Storage= 54,822 cf
Plug -Flow detention time= 843.8 min calculated for 2.198 of (93% of inflow)
Center -of -Mass det. time= 805.5 min ( 1,615.0 - 809.5 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=5.06 cfs @ 12.38 hrs HW=572.86' (Free Discharge)
L1=RCP_Round 24" (Passes 5.06 cfs of 43.56 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.16 cfs @ 9.97 fps)
3=Custom Weir/Orifice (Weir Controls 4.90 cfs @ 4.22 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 243
'1.7iL• f/ A =31�I I Vic%?
Hydrograph
49.92 cfs ; -- ---------------------------I--- -- -- -- -- - ■Inflow
❑ Ouff low
I
I II
I I II II I I1.l{l`
��i IyiI 1 11liI
■PrimaryIW1LQ��=6`7�0aV■Secondar
y---- ____55 ----
so I I I I I I I I—eak- 1ev-=5 286!--
I ,IIII II III III III III�5#45 -------------%traE,-82a-cf -
40 ,II -- - - -- -----IIII------------------;--;--;--;--;-- -- -- --
35 ,II -- - - -- -- III ---------------------II --II --II -- -- -- -- III -- III --
N I I I I I I I I I I I I I I I I I I
30 ,II -- - - -- -----IIII------------------I, --I, --I, -- -- -- -- -- --
3 I I I I I I I I I I I I I I I I I I I
0 25 --r--r--r--r--r--r------------I---i --r--r--r--r--r--r--r--
LL
20 --r- -r--r--r--r--r---------------r--r--r--r--r--r--r--r--
15 n R
r--r-- -- -- ---li---li---Ir--Ir--Ir--Ir--Ir--r--r--r--r--r--
10 5.06 cfs .i
0.00 cfS
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 244
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 245
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.11
240
568.53
0.00
0.00
0.00
10.00
0.60
2,801
568.80
0.04
0.04
0.00
12.50
4.00
54,597
572.85
5.00
5.00
0.00
15.00
1.21
42,738
572.06
1.97
1.97
0.00
17.50
0.78
38,304
571.75
1.07
1.07
0.00
20.00
0.53
36,290
571.61
0.72
0.72
0.00
22.50
0.48
35,185
571.53
0.56
0.56
0.00
25.00
0.00
33,456
571.40
0.33
0.33
0.00
27.50
0.00
31,459
571.25
0.15
0.15
0.00
30.00
0.00
30,294
571.16
0.12
0.12
0.00
32.50
0.00
29,203
571.08
0.12
0.12
0.00
35.00
0.00
28,130
571.00
0.12
0.12
0.00
37.50
0.00
27,075
570.92
0.12
0.12
0.00
40.00
0.00
26,038
570.84
0.11
0.11
0.00
42.50
0.00
25,019
570.76
0.11
0.11
0.00
45.00
0.00
24,019
570.68
0.11
0.11
0.00
47.50
0.00
23,037
570.60
0.11
0.11
0.00
50.00
0.00
22,074
570.52
0.11
0.11
0.00
52.50
0.00
21,130
570.44
0.10
0.10
0.00
55.00
0.00
20,205
570.37
0.10
0.10
0.00
57.50
0.00
19,299
570.29
0.10
0.10
0.00
60.00
0.00
18,413
570.22
0.10
0.10
0.00
62.50
0.00
17,546
570.15
0.10
0.10
0.00
65.00
0.00
16,698
570.07
0.09
0.09
0.00
67.50
0.00
15,871
570.00
0.09
0.09
0.00
70.00
0.00
15,064
569.93
0.09
0.09
0.00
72.50
0.00
14,277
569.86
0.09
0.09
0.00
75.00
0.00
13,510
569.80
0.08
0.08
0.00
77.50
0.00
12,764
569.73
0.08
0.08
0.00
80.00
0.00
12,038
569.67
0.08
0.08
0.00
82.50
0.00
11,333
569.60
0.08
0.08
0.00
85.00
0.00
10,650
569.54
0.07
0.07
0.00
87.50
0.00
9,987
569.48
0.07
0.07
0.00
90.00
0.00
9,346
569.42
0.07
0.07
0.00
92.50
0.00
8,726
569.37
0.07
0.07
0.00
95.00
0.00
8,127
569.31
0.07
0.07
0.00
97.50
0.00
7,551
569.26
0.06
0.06
0.00

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 246
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 247
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 248
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 3.57" for 50yr24hr event
Inflow = 7.12 cfs @ 12.22 hrs, Volume= 2.398 of
Primary = 7.12 cfs @ 12.22 hrs, Volume= 2.398 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
I I I I I I I I I I I I I I I I I I Inflow
7.12 cfs -- III --- -_-- ---I- ❑ Primary
7 InfloW Aires=$.01116Q ac
6
s II II II II II II II II II II II II II II II II II II
y I I I I I I I I I I I I I I I I I I
U
4
0 - - - - + - - -I- - - - - + - - -I- - - ­ 4 - - -I- - - ­ 7 - - -I- - - - - - - -I- - - - - - -
LL I I I I I I I I I I I I I I I I
3
- - 7 - T 7 - - T 7 - - T - - 7 7 - - 7 - - 7 - -
2
---I --I---I----I---I---I----I---I---I----I---I---I----I---I---I----I--
1 I I I I I I I I I I I I I I
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 249
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.00
0.00
0.00
9.00
0.02
0.00
0.02
10.00
0.04
0.00
0.04
11.00
0.06
0.00
0.06
12.00
3.52
0.00
3.52
13.00
4.59
0.00
4.59
14.00
3.00
0.00
3.00
15.00
2.12
0.00
2.12
16.00
1.60
0.00
1.60
17.00
1.27
0.00
1.27
18.00
1.07
0.00
1.07
19.00
0.92
0.00
0.92
20.00
0.79
0.00
0.79
21.00
0.70
0.00
0.70
22.00
0.64
0.00
0.64
23.00
0.60
0.00
0.60
24.00
0.56
0.00
0.56
25.00
0.33
0.00
0.33
26.00
0.23
0.00
0.23
27.00
0.17
0.00
0.17
28.00
0.14
0.00
0.14
29.00
0.12
0.00
0.12
30.00
0.12
0.00
0.12
31.00
0.12
0.00
0.12
32.00
0.12
0.00
0.12
33.00
0.12
0.00
0.12
34.00
0.12
0.00
0.12
35.00
0.12
0.00
0.12
36.00
0.12
0.00
0.12
37.00
0.12
0.00
0.12
38.00
0.12
0.00
0.12
39.00
0.12
0.00
0.12
40.00
0.11
0.00
0.11
41.00
0.11
0.00
0.11
42.00
0.11
0.00
0.11
43.00
0.11
0.00
0.11
44.00
0.11
0.00
0.11
45.00
0.11
0.00
0.11
46.00
0.11
0.00
0.11
47.00
0.11
0.00
0.11
48.00
0.11
0.00
0.11
49.00
0.11
0.00
0.11
50.00
0.11
0.00
0.11
51.00
0.11
0.00
0.11
52.00
0.10
0.00
0.10
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.10
0.00
0.10
54.00
0.10
0.00
0.10
55.00
0.10
0.00
0.10
56.00
0.10
0.00
0.10
57.00
0.10
0.00
0.10
58.00
0.10
0.00
0.10
59.00
0.10
0.00
0.10
60.00
0.10
0.00
0.10
61.00
0.10
0.00
0.10
62.00
0.10
0.00
0.10
63.00
0.09
0.00
0.09
64.00
0.09
0.00
0.09
65.00
0.09
0.00
0.09
66.00
0.09
0.00
0.09
67.00
0.09
0.00
0.09
68.00
0.09
0.00
0.09
69.00
0.09
0.00
0.09
70.00
0.09
0.00
0.09
71.00
0.09
0.00
0.09
72.00
0.09
0.00
0.09
73.00
0.09
0.00
0.09
74.00
0.08
0.00
0.08
75.00
0.08
0.00
0.08
76.00
0.08
0.00
0.08
77.00
0.08
0.00
0.08
78.00
0.08
0.00
0.08
79.00
0.08
0.00
0.08
80.00
0.08
0.00
0.08
81.00
0.08
0.00
0.08
82.00
0.08
0.00
0.08
83.00
0.08
0.00
0.08
84.00
0.08
0.00
0.08
85.00
0.07
0.00
0.07
86.00
0.07
0.00
0.07
87.00
0.07
0.00
0.07
88.00
0.07
0.00
0.07
89.00
0.07
0.00
0.07
90.00
0.07
0.00
0.07
91.00
0.07
0.00
0.07
92.00
0.07
0.00
0.07
93.00
0.07
0.00
0.07
94.00
0.07
0.00
0.07
95.00
0.07
0.00
0.07
96.00
0.06
0.00
0.06
97.00
0.06
0.00
0.06
98.00
0.06
0.00
0.06
99.00
0.06
0.00
0.06

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 250
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61% Impervious, Inflow Depth > 2.81" for 50yr24hr event
Inflow = 55.05 cfs @ 12.06 hrs, Volume= 6.608 of
Primary = 55.05 cfs @ 12.06 hrs, Volume= 6.608 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
-- ---I---
T --
T- - -I---
T --
T
- - -I--- T------
I - -- T- - -I--- T -- T---I--- T -- ---I--
■ Inflow
60
''
55.05 cfs
--T
-r--T---I---T-
----1---T--
---1---T---1---T
-- T---I--- r--T--- I - - - r--T
�Rf]QwN =20.�3Qsaf.-
❑ Primary
ry
55
�
T-
I- T- I-
1Arec
1
1
I
I I
1 1 1
45
1
1
--
1
-r--
1
---r--r--r---r--t---1---r--t---1---r--r---1---r--
1 1
1
1 1 1
1 1 1 1 1 1 1 1 1
---1--
40
,
--T
-r--T---I---T--T---I---T---I---I---T---I-
1 1
--r--T---I---r--T---I--
w 35
--
-r--
---1---r--r---1---r---1---1---r---1---r--r---1---r--
---1--
�
1
1
1
1 1
1
1 1 1
1 1 1 1 1 1 1 1 1
3 30
--
-r--
---1r--r--r---1r--r---1i---r--r---1i---r--r---1i---r--
---1i--
p
1
1
1
1 1
1
1 1 1
1 1 1 1 1 1 1 1 1
LL
zs-
i
--- T-
-
---+---1---1-__+---1---r--+---1---r--+---1--
20
i
+--r---1---+---1---1---+---1---r--+---1---r--r---1--
1
15
--
- --
---1---T--
---1---+---1---1---+---1---
--+---1--- -- ---I--
10
--
--
---1---r--
---1---r---1---1---r---1---r--r---1---r--
---1--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 11 24-hr 50yr24hr Rainfall=6.48"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 251
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.01
0.00
0.01
9.00
0.05
0.00
0.05
10.00
0.11
0.00
0.11
11.00
0.40
0.00
0.40
12.00
42.72
0.00
42.72
13.00
7.08
0.00
7.08
14.00
6.31
0.00
6.31
15.00
5.14
0.00
5.14
16.00
4.16
0.00
4.16
17.00
3.46
0.00
3.46
18.00
3.01
0.00
3.01
19.00
2.63
0.00
2.63
20.00
2.28
0.00
2.28
21.00
2.04
0.00
2.04
22.00
1.90
0.00
1.90
23.00
1.80
0.00
1.80
24.00
1.71
0.00
1.71
25.00
0.81
0.00
0.81
26.00
0.52
0.00
0.52
27.00
0.42
0.00
0.42
28.00
0.40
0.00
0.40
29.00
0.39
0.00
0.39
30.00
0.39
0.00
0.39
31.00
0.38
0.00
0.38
32.00
0.38
0.00
0.38
33.00
0.38
0.00
0.38
34.00
0.37
0.00
0.37
35.00
0.37
0.00
0.37
36.00
0.37
0.00
0.37
37.00
0.36
0.00
0.36
38.00
0.36
0.00
0.36
39.00
0.35
0.00
0.35
40.00
0.35
0.00
0.35
41.00
0.35
0.00
0.35
42.00
0.34
0.00
0.34
43.00
0.34
0.00
0.34
44.00
0.33
0.00
0.33
45.00
0.33
0.00
0.33
46.00
0.32
0.00
0.32
47.00
0.32
0.00
0.32
48.00
0.32
0.00
0.32
49.00
0.31
0.00
0.31
50.00
0.31
0.00
0.31
51.00
0.30
0.00
0.30
52.00
0.30
0.00
0.30
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.29
0.00
0.29
54.00
0.29
0.00
0.29
55.00
0.29
0.00
0.29
56.00
0.28
0.00
0.28
57.00
0.28
0.00
0.28
58.00
0.27
0.00
0.27
59.00
0.27
0.00
0.27
60.00
0.26
0.00
0.26
61.00
0.26
0.00
0.26
62.00
0.25
0.00
0.25
63.00
0.25
0.00
0.25
64.00
0.24
0.00
0.24
65.00
0.24
0.00
0.24
66.00
0.23
0.00
0.23
67.00
0.23
0.00
0.23
68.00
0.22
0.00
0.22
69.00
0.22
0.00
0.22
70.00
0.21
0.00
0.21
71.00
0.21
0.00
0.21
72.00
0.21
0.00
0.21
73.00
0.20
0.00
0.20
74.00
0.20
0.00
0.20
75.00
0.19
0.00
0.19
76.00
0.18
0.00
0.18
77.00
0.18
0.00
0.18
78.00
0.17
0.00
0.17
79.00
0.17
0.00
0.17
80.00
0.16
0.00
0.16
81.00
0.16
0.00
0.16
82.00
0.15
0.00
0.15
83.00
0.15
0.00
0.15
84.00
0.14
0.00
0.14
85.00
0.14
0.00
0.14
86.00
0.14
0.00
0.14
87.00
0.13
0.00
0.13
88.00
0.13
0.00
0.13
89.00
0.13
0.00
0.13
90.00
0.13
0.00
0.13
91.00
0.12
0.00
0.12
92.00
0.12
0.00
0.12
93.00
0.12
0.00
0.12
94.00
0.12
0.00
0.12
95.00
0.12
0.00
0.12
96.00
0.12
0.00
0.12
97.00
0.11
0.00
0.11
98.00
0.11
0.00
0.11
99.00
0.11
0.00
0.11

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 252
Time span=0.00-99.00 hrs, dt=0.05 hrs, 1981 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment1S: Pre-Development#1 Runoff Area=30.590 ac 3.53% Impervious Runoff Depth=2.29"
Tc=21.7 min CN=57 Runoff=70.03 cfs 5.829 of
Subcatchment2S: Pre-Development#2 Runoff Area=5.620 ac 0.00% Impervious Runoff Depth=2.10"
Tc=24.9 min CN=55 Runoff=10.59 cfs 0.983 of
Subcatchment8S: BMP #1 Runoff Area=12.980 ac 0.00% Impervious Runoff Depth=2.87"
Tc=5.0 min CN=63 Runoff=67.14 cfs 3.105 of
Subcatchment9S: BMP #2 Runoff Area=9.670 ac 0.00% Impervious Runoff Depth=4.66"
Tc=5.0 min CN=80 Runoff=78.56 cfs 3.753 of
Subcatchment 10S: BMP #3 Runoff Area=6.900 ac 0.00% Impervious Runoff Depth=4.55"
Tc=5.0 min CN=79 Runoff=54.97 cfs 2.615 of
Subcatchment 11 S: Bypass #1 Runoff Area=5.580 ac 18.28% Impervious Runoff Depth=3.07"
Tc=16.9 min CN=65 Runoff=20.63 cfs 1.428 of
Subcatchment 12S: Bypass #2 Runoff Area=1.160 ac 0.00% Impervious Runoff Depth=2.38"
Tc=24.9 min CN=58 Runoff=2.55 cfs 0.230 of
Subcatchment 13S: Pre-Development#3 Runoff Area=9.070 ac 0.00% Impervious Runoff Depth=2.10"
Tc=20.7 min CN=55 Runoff=19.26 cfs 1.586 of
Subcatchment14S: Post Development#3 Runoff Area=8.990 ac 0.00% Impervious Runoff Depth=2.10"
Tc=20.7 min CN=55 Runoff=19.09 cfs 1.572 of
Pond 5P: BMP #1 Peak EIev=570.61' Storage=76,632 cf Inflow=67.14 cfs 3.105 of
Primary=3.17 cfs 2.345 of Secondary=0.00 cfs 0.000 of Outflow=3.17 cfs 2.345 of
Pond 6P: BMP #2 Peak EIev=563.05' Storage=67,180 cf Inflow=78.56 cfs 3.753 of
Primary=48.21 cfs 3.740 of Secondary=0.00 cfs 0.000 of Outflow=48.21 cfs 3.740 of
Pond 7P: BMP #3 Peak EIev=573.17' Storage=59,816 cf Inflow=54.97 cfs 2.615 of
Primary=6.52 cfs 2.449 of Secondary=0.00 cfs 0.000 of Outflow=6.52 cfs 2.449 of
Link 17L: Post Development#2 Inflow=9.05 cfs 2.679 of
Primary=9.05 cfs 2.679 of
Link 18L: Post Development#1
Inflow=67.22 cfs 7.514 of
Primary=67.22 cfs 7.514 of
Total Runoff Area = 90.560 ac Runoff Volume = 21.102 of Average Runoff Depth = 2.80"
97.68% Pervious = 88.460 ac 2.32% Impervious = 2.100 ac

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 253
Summary for Subcatchment 1S: Pre -Development #1
Runoff = 70.03 cfs @ 12.16 hrs, Volume= 5.829 af, Depth= 2.29"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
29.510
55
Woods, Good, HSG B
1.020
98
Water Surface, HSG B
0.060
98
Paved roads w/curbs & sewers, HSG B
30.590
57
Weighted Average
29.510
96.47% Pervious Area
1.080
3.53% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
21.7 Direct Entry,
Subcatchment 1S: Pre -Development #1
Hydrograph
---'---'----'---'----'---'----'---'---'----'----'---'---'----'---'----'---'----'---'--- ■Runoff
75 70.03 cfs ----- ------------+------+------ ------+------r------r--
70 I _ Type- l_ 24-hr- -
65 --�--- - ------------rt---I--- t--- I---100. T 124-hr',Rai,n#e1��.9W' -
60-
------------------ ------ RunoffAima=30.590-ac -
--------------
55
-- - - -- -- - --- -- -- - --- Rurio�Vo'lun a=6.$29 �f -
50 -- - -L---1---L---'---L---'---L---'---L------L------L------L---'---L--
45- Runoff Dlept'h=2.29'"
U --T-LI
T------T------T---I- r---I---r- I- T---I---r3 40 --L-L---1---1------L---I---L---I---L------I- Tc=2'1_7���1I'�in�jh�1�-
35 - jCN-- I--
-T-T---r--T------T------T---r--r------rI---r30 25r r T T r T r 2015
r r T T r T r r--
10
s
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 254
Hydrograph for Subcatchment 1S: Pre -Development #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.00
11.00
1.64
0.00
0.05
12.00
4.61
0.91
37.41
13.00
5.37
1.31
9.87
14.00
5.71
1.50
5.46
15.00
5.94
1.64
4.15
16.00
6.12
1.75
3.33
17.00
6.28
1.85
2.85
18.00
6.41
1.93
2.55
19.00
6.53
2.00
2.23
20.00
6.63
2.07
1.91
21.00
6.71
2.13
1.76
22.00
6.80
2.18
1.71
23.00
6.88
2.23
1.65
24.00
6.96
2.29
1.59
25.00
6.96
2.29
0.01
26.00
6.96
2.29
0.00
27.00
6.96
2.29
0.00
28.00
6.96
2.29
0.00
29.00
6.96
2.29
0.00
30.00
6.96
2.29
0.00
31.00
6.96
2.29
0.00
32.00
6.96
2.29
0.00
33.00
6.96
2.29
0.00
34.00
6.96
2.29
0.00
35.00
6.96
2.29
0.00
36.00
6.96
2.29
0.00
37.00
6.96
2.29
0.00
38.00
6.96
2.29
0.00
39.00
6.96
2.29
0.00
40.00
6.96
2.29
0.00
41.00
6.96
2.29
0.00
42.00
6.96
2.29
0.00
43.00
6.96
2.29
0.00
44.00
6.96
2.29
0.00
45.00
6.96
2.29
0.00
46.00
6.96
2.29
0.00
47.00
6.96
2.29
0.00
48.00
6.96
2.29
0.00
49.00
6.96
2.29
0.00
50.00
6.96
2.29
0.00
51.00
6.96
2.29
0.00
52.00
6.96
2.29
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.29
0.00
54.00
6.96
2.29
0.00
55.00
6.96
2.29
0.00
56.00
6.96
2.29
0.00
57.00
6.96
2.29
0.00
58.00
6.96
2.29
0.00
59.00
6.96
2.29
0.00
60.00
6.96
2.29
0.00
61.00
6.96
2.29
0.00
62.00
6.96
2.29
0.00
63.00
6.96
2.29
0.00
64.00
6.96
2.29
0.00
65.00
6.96
2.29
0.00
66.00
6.96
2.29
0.00
67.00
6.96
2.29
0.00
68.00
6.96
2.29
0.00
69.00
6.96
2.29
0.00
70.00
6.96
2.29
0.00
71.00
6.96
2.29
0.00
72.00
6.96
2.29
0.00
73.00
6.96
2.29
0.00
74.00
6.96
2.29
0.00
75.00
6.96
2.29
0.00
76.00
6.96
2.29
0.00
77.00
6.96
2.29
0.00
78.00
6.96
2.29
0.00
79.00
6.96
2.29
0.00
80.00
6.96
2.29
0.00
81.00
6.96
2.29
0.00
82.00
6.96
2.29
0.00
83.00
6.96
2.29
0.00
84.00
6.96
2.29
0.00
85.00
6.96
2.29
0.00
86.00
6.96
2.29
0.00
87.00
6.96
2.29
0.00
88.00
6.96
2.29
0.00
89.00
6.96
2.29
0.00
90.00
6.96
2.29
0.00
91.00
6.96
2.29
0.00
92.00
6.96
2.29
0.00
93.00
6.96
2.29
0.00
94.00
6.96
2.29
0.00
95.00
6.96
2.29
0.00
96.00
6.96
2.29
0.00
97.00
6.96
2.29
0.00
98.00
6.96
2.29
0.00
99.00
6.96
2.29
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 255
Summary for Subcatchment 2S: Pre -Development #2
Runoff = 10.59 cfs @ 12.21 hrs, Volume= 0.983 af, Depth= 2.10"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
5.620 55 Woods, Good, HSG B
5.620 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 2S: Pre -Development #2
Hydrograph
10.5
-- - -- -- - - -- -- - - -- -- -- -- ■Runoff
11 9 cfs
--r--- ----r------t------r------r---I r Type-N 2"r
10 1 --100;1
y-r * 2-4'I,-hr 'RaalnfaII=6.9w' -
-- -----Runoff Area=6.620-ac-
$ Runoff Volume=0.983 of
-- T-- - T T T T T T T T--
w
7 Runoff Dleptlh=2.10I"
3 6 I I TC=24.91 min
O --�-- -L------L--- ---1---1---1------1------L--- ---L---I--- L--- I --- L--
LL s CNJ=55
4
--r -- -r---r--r---r--r---r--r---r--r---r--r------r------r------r--
3
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 256
Hydrograph for Subcatchment 2S: Pre -Development #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.00
11.00
1.64
0.00
0.00
12.00
4.61
0.79
4.53
13.00
5.37
1.17
1.85
14.00
5.71
1.35
0.97
15.00
5.94
1.48
0.73
16.00
6.12
1.59
0.59
17.00
6.28
1.68
0.50
18.00
6.41
1.76
0.45
19.00
6.53
1.83
0.39
20.00
6.63
1.89
0.34
21.00
6.71
1.94
0.31
22.00
6.80
2.00
0.30
23.00
6.88
2.05
0.29
24.00
6.96
2.10
0.28
25.00
6.96
2.10
0.00
26.00
6.96
2.10
0.00
27.00
6.96
2.10
0.00
28.00
6.96
2.10
0.00
29.00
6.96
2.10
0.00
30.00
6.96
2.10
0.00
31.00
6.96
2.10
0.00
32.00
6.96
2.10
0.00
33.00
6.96
2.10
0.00
34.00
6.96
2.10
0.00
35.00
6.96
2.10
0.00
36.00
6.96
2.10
0.00
37.00
6.96
2.10
0.00
38.00
6.96
2.10
0.00
39.00
6.96
2.10
0.00
40.00
6.96
2.10
0.00
41.00
6.96
2.10
0.00
42.00
6.96
2.10
0.00
43.00
6.96
2.10
0.00
44.00
6.96
2.10
0.00
45.00
6.96
2.10
0.00
46.00
6.96
2.10
0.00
47.00
6.96
2.10
0.00
48.00
6.96
2.10
0.00
49.00
6.96
2.10
0.00
50.00
6.96
2.10
0.00
51.00
6.96
2.10
0.00
52.00
6.96
2.10
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.10
0.00
54.00
6.96
2.10
0.00
55.00
6.96
2.10
0.00
56.00
6.96
2.10
0.00
57.00
6.96
2.10
0.00
58.00
6.96
2.10
0.00
59.00
6.96
2.10
0.00
60.00
6.96
2.10
0.00
61.00
6.96
2.10
0.00
62.00
6.96
2.10
0.00
63.00
6.96
2.10
0.00
64.00
6.96
2.10
0.00
65.00
6.96
2.10
0.00
66.00
6.96
2.10
0.00
67.00
6.96
2.10
0.00
68.00
6.96
2.10
0.00
69.00
6.96
2.10
0.00
70.00
6.96
2.10
0.00
71.00
6.96
2.10
0.00
72.00
6.96
2.10
0.00
73.00
6.96
2.10
0.00
74.00
6.96
2.10
0.00
75.00
6.96
2.10
0.00
76.00
6.96
2.10
0.00
77.00
6.96
2.10
0.00
78.00
6.96
2.10
0.00
79.00
6.96
2.10
0.00
80.00
6.96
2.10
0.00
81.00
6.96
2.10
0.00
82.00
6.96
2.10
0.00
83.00
6.96
2.10
0.00
84.00
6.96
2.10
0.00
85.00
6.96
2.10
0.00
86.00
6.96
2.10
0.00
87.00
6.96
2.10
0.00
88.00
6.96
2.10
0.00
89.00
6.96
2.10
0.00
90.00
6.96
2.10
0.00
91.00
6.96
2.10
0.00
92.00
6.96
2.10
0.00
93.00
6.96
2.10
0.00
94.00
6.96
2.10
0.00
95.00
6.96
2.10
0.00
96.00
6.96
2.10
0.00
97.00
6.96
2.10
0.00
98.00
6.96
2.10
0.00
99.00
6.96
2.10
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 257
Summary for Subcatchment 8S: BMP #1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 67.14 cfs @ 11.96 hrs, Volume= 3.105 af, Depth= 2.87"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
12.980 63
12.980 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8S: BMP #1
Hydrograph
75 - - Runoff
------------------------------------------------
70 67.14 cfs - - -
---
65 Type; fl 4hr
60 ---,-- - ---II --- - -, --- - - - II - - ------'100.yr.24,hrRa%nfall=6.96"-
--J-- - ------ ---1---1---1---+------+----
55 Runoff Area=1 2.98'0 ad
- - - - - - T - - - - - - - - - - - + - - - - - T - - - I - - - T - - - I - - - T - - - I - - - T - - -I - - - T - - -I - - - + - -
so -- -- -- ---Rufioff_Vd1unw=3-.1"-af-
45 --+---+---+--+---+--+---+--+------+---+--+ n
N Runoff Depth=�-87+
40
3 35 ---i-- - ---------i------i------i-------------i-----Tc,5.-On 6-
0
LL --�---�---�---�---�---+---�---+---�---+---�---+---�---+---�---� CND=6'3-
30
25 -- -- -1---1---1---1---1---'---1---'---1------+------+------L------+--
20
-y-- ----r-----r--rt---r--+------t------+------+------r------r--
15
10
--+---+---+--+---+--+- -+------+---+--+--+---+--+---+------+--
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 258
Hydrograph for Subcatchment 8S: BMP #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.08
11.00
1.64
0.03
0.82
12.00
4.61
1.27
59.88
13.00
5.37
1.75
3.89
14.00
5.71
1.97
2.39
15.00
5.94
2.13
1.93
16.00
6.12
2.26
1.51
17.00
6.28
2.37
1.34
18.00
6.41
2.47
1.19
19.00
6.53
2.55
1.04
20.00
6.63
2.62
0.88
21.00
6.71
2.69
0.84
22.00
6.80
2.75
0.81
23.00
6.88
2.81
0.78
24.00
6.96
2.87
0.75
25.00
6.96
2.87
0.00
26.00
6.96
2.87
0.00
27.00
6.96
2.87
0.00
28.00
6.96
2.87
0.00
29.00
6.96
2.87
0.00
30.00
6.96
2.87
0.00
31.00
6.96
2.87
0.00
32.00
6.96
2.87
0.00
33.00
6.96
2.87
0.00
34.00
6.96
2.87
0.00
35.00
6.96
2.87
0.00
36.00
6.96
2.87
0.00
37.00
6.96
2.87
0.00
38.00
6.96
2.87
0.00
39.00
6.96
2.87
0.00
40.00
6.96
2.87
0.00
41.00
6.96
2.87
0.00
42.00
6.96
2.87
0.00
43.00
6.96
2.87
0.00
44.00
6.96
2.87
0.00
45.00
6.96
2.87
0.00
46.00
6.96
2.87
0.00
47.00
6.96
2.87
0.00
48.00
6.96
2.87
0.00
49.00
6.96
2.87
0.00
50.00
6.96
2.87
0.00
51.00
6.96
2.87
0.00
52.00
6.96
2.87
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.87
0.00
54.00
6.96
2.87
0.00
55.00
6.96
2.87
0.00
56.00
6.96
2.87
0.00
57.00
6.96
2.87
0.00
58.00
6.96
2.87
0.00
59.00
6.96
2.87
0.00
60.00
6.96
2.87
0.00
61.00
6.96
2.87
0.00
62.00
6.96
2.87
0.00
63.00
6.96
2.87
0.00
64.00
6.96
2.87
0.00
65.00
6.96
2.87
0.00
66.00
6.96
2.87
0.00
67.00
6.96
2.87
0.00
68.00
6.96
2.87
0.00
69.00
6.96
2.87
0.00
70.00
6.96
2.87
0.00
71.00
6.96
2.87
0.00
72.00
6.96
2.87
0.00
73.00
6.96
2.87
0.00
74.00
6.96
2.87
0.00
75.00
6.96
2.87
0.00
76.00
6.96
2.87
0.00
77.00
6.96
2.87
0.00
78.00
6.96
2.87
0.00
79.00
6.96
2.87
0.00
80.00
6.96
2.87
0.00
81.00
6.96
2.87
0.00
82.00
6.96
2.87
0.00
83.00
6.96
2.87
0.00
84.00
6.96
2.87
0.00
85.00
6.96
2.87
0.00
86.00
6.96
2.87
0.00
87.00
6.96
2.87
0.00
88.00
6.96
2.87
0.00
89.00
6.96
2.87
0.00
90.00
6.96
2.87
0.00
91.00
6.96
2.87
0.00
92.00
6.96
2.87
0.00
93.00
6.96
2.87
0.00
94.00
6.96
2.87
0.00
95.00
6.96
2.87
0.00
96.00
6.96
2.87
0.00
97.00
6.96
2.87
0.00
98.00
6.96
2.87
0.00
99.00
6.96
2.87
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 259
Summary for Subcatchment 9S: BMP #2
[49] Hint: Tc<2dt may require smaller dt
Runoff = 78.56 cfs @ 11.95 hrs, Volume= 3.753 af, Depth= 4.66"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
9.670 80
9.670 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 9S: BMP #2
Hydrograph
85 Runoff
78.56 cfs - --L---1---1---L--L------L------L------L------L------L--
80 ----------------'---'---'---'---'---'---'---' ---' _
75 T_Ype; II- 24 hr` -
- -- - -- T--- I---T ---T--T--- I---1000 _r T 24', hrLR_-nfaFjI=6_96r.. L
70 --�------r--------rt------+------1---1-- A �y y
65 -- --------------------------+------T-----Runoff Area=9A70 ac-
60 ---'------------------'--- T _
-- ------ Ruh offVoiurrre=17-5-3 4f-
55 I I I 7 I 1
50 - ---;------ T------T------T------T---I--- LRunoff D',eptLh=4.--I -
3 45 -- -- - ------------+------+------+------T------T---TCZ�5._O 41r6 -
a4° -- - - ------ ------------+------+------ ------ ---- uF aye
35 1=v1J
---- -
-----------------------------------------------------
------
30
25
-- -- - ---T ---
--T--_T - - -T --T------T---T--T------T------T------r--
20 --�--------------------+------+------+------+-----------�--
15 --J-- - ---L-----1---1---1---1------1------I
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 260
Hydrograph for Subcatchment 9S: BMP #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.04
7.00
0.69
0.01
0.17
8.00
0.84
0.04
0.32
9.00
1.02
0.09
0.65
10.00
1.26
0.18
1.06
11.00
1.64
0.35
2.42
12.00
4.61
2.56
67.20
13.00
5.37
3.22
3.90
14.00
5.71
3.52
2.34
15.00
5.94
3.73
1.87
16.00
6.12
3.89
1.45
17.00
6.28
4.03
1.28
18.00
6.41
4.15
1.13
19.00
6.53
4.26
0.97
20.00
6.63
4.35
0.82
21.00
6.71
4.43
0.78
22.00
6.80
4.51
0.75
23.00
6.88
4.59
0.72
24.00
6.96
4.66
0.69
25.00
6.96
4.66
0.00
26.00
6.96
4.66
0.00
27.00
6.96
4.66
0.00
28.00
6.96
4.66
0.00
29.00
6.96
4.66
0.00
30.00
6.96
4.66
0.00
31.00
6.96
4.66
0.00
32.00
6.96
4.66
0.00
33.00
6.96
4.66
0.00
34.00
6.96
4.66
0.00
35.00
6.96
4.66
0.00
36.00
6.96
4.66
0.00
37.00
6.96
4.66
0.00
38.00
6.96
4.66
0.00
39.00
6.96
4.66
0.00
40.00
6.96
4.66
0.00
41.00
6.96
4.66
0.00
42.00
6.96
4.66
0.00
43.00
6.96
4.66
0.00
44.00
6.96
4.66
0.00
45.00
6.96
4.66
0.00
46.00
6.96
4.66
0.00
47.00
6.96
4.66
0.00
48.00
6.96
4.66
0.00
49.00
6.96
4.66
0.00
50.00
6.96
4.66
0.00
51.00
6.96
4.66
0.00
52.00
6.96
4.66
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
4.66
0.00
54.00
6.96
4.66
0.00
55.00
6.96
4.66
0.00
56.00
6.96
4.66
0.00
57.00
6.96
4.66
0.00
58.00
6.96
4.66
0.00
59.00
6.96
4.66
0.00
60.00
6.96
4.66
0.00
61.00
6.96
4.66
0.00
62.00
6.96
4.66
0.00
63.00
6.96
4.66
0.00
64.00
6.96
4.66
0.00
65.00
6.96
4.66
0.00
66.00
6.96
4.66
0.00
67.00
6.96
4.66
0.00
68.00
6.96
4.66
0.00
69.00
6.96
4.66
0.00
70.00
6.96
4.66
0.00
71.00
6.96
4.66
0.00
72.00
6.96
4.66
0.00
73.00
6.96
4.66
0.00
74.00
6.96
4.66
0.00
75.00
6.96
4.66
0.00
76.00
6.96
4.66
0.00
77.00
6.96
4.66
0.00
78.00
6.96
4.66
0.00
79.00
6.96
4.66
0.00
80.00
6.96
4.66
0.00
81.00
6.96
4.66
0.00
82.00
6.96
4.66
0.00
83.00
6.96
4.66
0.00
84.00
6.96
4.66
0.00
85.00
6.96
4.66
0.00
86.00
6.96
4.66
0.00
87.00
6.96
4.66
0.00
88.00
6.96
4.66
0.00
89.00
6.96
4.66
0.00
90.00
6.96
4.66
0.00
91.00
6.96
4.66
0.00
92.00
6.96
4.66
0.00
93.00
6.96
4.66
0.00
94.00
6.96
4.66
0.00
95.00
6.96
4.66
0.00
96.00
6.96
4.66
0.00
97.00
6.96
4.66
0.00
98.00
6.96
4.66
0.00
99.00
6.96
4.66
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 261
Summary for Subcatchment 10S: BMP #3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 54.97 cfs @ 11.95 hrs, Volume= 2.615 af, Depth= 4.55"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
6.900 79
6.900 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 10S: BMP #3
Hydrograph
7 - - - I- - - - - - - - - + - - - I- - - T - - - - - - + - - - - - - + - - - - - - + - - -I - - - T - - -I - - - T - -
60 Runoff
54.97 cfs -------------------T------T------r------t------r------r--
55 T De 11 24-h r
- - - - - - - - I- - - + - - - - - - + - - - I- - - + - - - I - - - + - - - I - - - + - - - - - - + - - y - + - - -I - - - + - -
50 100. r * 24hr'IRainfa�ll=6.96'"
--I-- - ---------1---1---1---I------I---Y-L------ ------I------I--
45 Runoff Area=6.900 ac
-
I- - - I - - -I- - - CI
40 Rurhoff Volume=2.615 of
N 35 Runoff D',ept',h=4.56"
- -- - --------T-- T------T------T - -- --T --- s -n TC'-
30
3 5.01, -mi
_ q_I
1
LL --y--I------I------t------t------t------+------+------r Cr4=79
25
20
-- -- -1---1---1---1---1---'---1---'---1------i------+------L------+--
15
10
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 262
Hydrograph for Subcatchment 10S: BMP #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.01
7.00
0.69
0.01
0.10
8.00
0.84
0.03
0.20
9.00
1.02
0.08
0.42
10.00
1.26
0.16
0.71
11.00
1.64
0.32
1.64
12.00
4.61
2.47
47.11
13.00
5.37
3.13
2.75
14.00
5.71
3.42
1.65
15.00
5.94
3.63
1.32
16.00
6.12
3.79
1.02
17.00
6.28
3.93
0.90
18.00
6.41
4.05
0.80
19.00
6.53
4.15
0.69
20.00
6.63
4.24
0.58
21.00
6.71
4.32
0.55
22.00
6.80
4.40
0.53
23.00
6.88
4.48
0.51
24.00
6.96
4.55
0.49
25.00
6.96
4.55
0.00
26.00
6.96
4.55
0.00
27.00
6.96
4.55
0.00
28.00
6.96
4.55
0.00
29.00
6.96
4.55
0.00
30.00
6.96
4.55
0.00
31.00
6.96
4.55
0.00
32.00
6.96
4.55
0.00
33.00
6.96
4.55
0.00
34.00
6.96
4.55
0.00
35.00
6.96
4.55
0.00
36.00
6.96
4.55
0.00
37.00
6.96
4.55
0.00
38.00
6.96
4.55
0.00
39.00
6.96
4.55
0.00
40.00
6.96
4.55
0.00
41.00
6.96
4.55
0.00
42.00
6.96
4.55
0.00
43.00
6.96
4.55
0.00
44.00
6.96
4.55
0.00
45.00
6.96
4.55
0.00
46.00
6.96
4.55
0.00
47.00
6.96
4.55
0.00
48.00
6.96
4.55
0.00
49.00
6.96
4.55
0.00
50.00
6.96
4.55
0.00
51.00
6.96
4.55
0.00
52.00
6.96
4.55
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
4.55
0.00
54.00
6.96
4.55
0.00
55.00
6.96
4.55
0.00
56.00
6.96
4.55
0.00
57.00
6.96
4.55
0.00
58.00
6.96
4.55
0.00
59.00
6.96
4.55
0.00
60.00
6.96
4.55
0.00
61.00
6.96
4.55
0.00
62.00
6.96
4.55
0.00
63.00
6.96
4.55
0.00
64.00
6.96
4.55
0.00
65.00
6.96
4.55
0.00
66.00
6.96
4.55
0.00
67.00
6.96
4.55
0.00
68.00
6.96
4.55
0.00
69.00
6.96
4.55
0.00
70.00
6.96
4.55
0.00
71.00
6.96
4.55
0.00
72.00
6.96
4.55
0.00
73.00
6.96
4.55
0.00
74.00
6.96
4.55
0.00
75.00
6.96
4.55
0.00
76.00
6.96
4.55
0.00
77.00
6.96
4.55
0.00
78.00
6.96
4.55
0.00
79.00
6.96
4.55
0.00
80.00
6.96
4.55
0.00
81.00
6.96
4.55
0.00
82.00
6.96
4.55
0.00
83.00
6.96
4.55
0.00
84.00
6.96
4.55
0.00
85.00
6.96
4.55
0.00
86.00
6.96
4.55
0.00
87.00
6.96
4.55
0.00
88.00
6.96
4.55
0.00
89.00
6.96
4.55
0.00
90.00
6.96
4.55
0.00
91.00
6.96
4.55
0.00
92.00
6.96
4.55
0.00
93.00
6.96
4.55
0.00
94.00
6.96
4.55
0.00
95.00
6.96
4.55
0.00
96.00
6.96
4.55
0.00
97.00
6.96
4.55
0.00
98.00
6.96
4.55
0.00
99.00
6.96
4.55
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 263
Summary for Subcatchment 11S: Bypass #1
Runoff = 20.63 cfs @ 12.10 hrs, Volume= 1.428 af, Depth= 3.07"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN
Description
4.560 58
Woods/grass comb., Good, HSG B
1.020 98
Water Surface, HSG B
5.580 65
Weighted Average
4.560
81.72% Pervious Area
1.020
18.28% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
16.9
Direct Entry,
Subcatchment 11S: Bypass #1
Hydrograph
23
---- - -
- -----,---
---,---
---,---
---,---
----------,-----------------,---
■Runoff
zz
- 20.63 cfs --
--L---1---1---L--L------L------L------
------L------L--
21
20
-- ---
--
----+--+------+------+------+------+------+-T'---
-- -- T fl 4 h -
19
-----
- ------
1 ------
1---1---
+-----Otr�yr`*
24'1�rRa%n#�1f= :99�"-
18
17
--+--
--�--
-+---+--+---+--+---+--+------+--
- ---'
--T---T--T---T--T---I---T---I--Runoff
Area--580-ac-
16
15
J
---'-
--+-
--'-------'
-+---+--+
---'-
---
- --'------'----'----'
---+---
---+--- ---
------'----'--- + ---'---'----I---'---
+ --- Runoff Vo1uH =1A2-8-af -
14
w 13
-- -
----
- ---
------------------------------------+RunoffDep#t=3.0
--------
T-
-- T--T----
--T- - - ---T --- - r
--
12
- T'c=-16 s m i il-
3
11 o
10
-----
- ------
------
------
----
- -
-- �1�1-6
9
-- --
-1---1---1---1---1---'---+---'---+
--- ---+--- ---+--- '---L---'--- +--
7
----
- ---�i
-- ---�i
-- ---�i
-----�i---
---�i------�i------�i------�i--- --
6
-- --
-1---1---1---1---1---'---+---'---+------+------+------L------+--
4
-- ---
- -- -
, ---- -
, --- --
-, ---- -, --
--- -, -- -+-- -, -- -+-- -, ----- -, -- -+ --
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 264
Hydrograph for Subcatchment 11S: Bypass #1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.01
0.06
11.00
1.64
0.05
0.35
12.00
4.61
1.40
15.33
13.00
5.37
1.91
2.02
14.00
5.71
2.14
1.17
15.00
5.94
2.31
0.90
16.00
6.12
2.44
0.71
17.00
6.28
2.55
0.61
18.00
6.41
2.65
0.54
19.00
6.53
2.74
0.48
20.00
6.63
2.82
0.40
21.00
6.71
2.88
0.38
22.00
6.80
2.95
0.36
23.00
6.88
3.01
0.35
24.00
6.96
3.07
0.34
25.00
6.96
3.07
0.00
26.00
6.96
3.07
0.00
27.00
6.96
3.07
0.00
28.00
6.96
3.07
0.00
29.00
6.96
3.07
0.00
30.00
6.96
3.07
0.00
31.00
6.96
3.07
0.00
32.00
6.96
3.07
0.00
33.00
6.96
3.07
0.00
34.00
6.96
3.07
0.00
35.00
6.96
3.07
0.00
36.00
6.96
3.07
0.00
37.00
6.96
3.07
0.00
38.00
6.96
3.07
0.00
39.00
6.96
3.07
0.00
40.00
6.96
3.07
0.00
41.00
6.96
3.07
0.00
42.00
6.96
3.07
0.00
43.00
6.96
3.07
0.00
44.00
6.96
3.07
0.00
45.00
6.96
3.07
0.00
46.00
6.96
3.07
0.00
47.00
6.96
3.07
0.00
48.00
6.96
3.07
0.00
49.00
6.96
3.07
0.00
50.00
6.96
3.07
0.00
51.00
6.96
3.07
0.00
52.00
6.96
3.07
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
3.07
0.00
54.00
6.96
3.07
0.00
55.00
6.96
3.07
0.00
56.00
6.96
3.07
0.00
57.00
6.96
3.07
0.00
58.00
6.96
3.07
0.00
59.00
6.96
3.07
0.00
60.00
6.96
3.07
0.00
61.00
6.96
3.07
0.00
62.00
6.96
3.07
0.00
63.00
6.96
3.07
0.00
64.00
6.96
3.07
0.00
65.00
6.96
3.07
0.00
66.00
6.96
3.07
0.00
67.00
6.96
3.07
0.00
68.00
6.96
3.07
0.00
69.00
6.96
3.07
0.00
70.00
6.96
3.07
0.00
71.00
6.96
3.07
0.00
72.00
6.96
3.07
0.00
73.00
6.96
3.07
0.00
74.00
6.96
3.07
0.00
75.00
6.96
3.07
0.00
76.00
6.96
3.07
0.00
77.00
6.96
3.07
0.00
78.00
6.96
3.07
0.00
79.00
6.96
3.07
0.00
80.00
6.96
3.07
0.00
81.00
6.96
3.07
0.00
82.00
6.96
3.07
0.00
83.00
6.96
3.07
0.00
84.00
6.96
3.07
0.00
85.00
6.96
3.07
0.00
86.00
6.96
3.07
0.00
87.00
6.96
3.07
0.00
88.00
6.96
3.07
0.00
89.00
6.96
3.07
0.00
90.00
6.96
3.07
0.00
91.00
6.96
3.07
0.00
92.00
6.96
3.07
0.00
93.00
6.96
3.07
0.00
94.00
6.96
3.07
0.00
95.00
6.96
3.07
0.00
96.00
6.96
3.07
0.00
97.00
6.96
3.07
0.00
98.00
6.96
3.07
0.00
99.00
6.96
3.07
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 265
Summary for Subcatchment 12S: Bypass #2
Runoff = 2.55 cfs @ 12.20 hrs, Volume= 0.230 af, Depth= 2.38"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
1.160 58 Woods/grass comb., Good, HSG B
1.160 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
24.9 Direct Entry,
Subcatchment 12S: Bypass #2
Hydrograph
� � � � � � � � � � � � � � � � � � � ■Runoff
2.55 cfs
Tj�p6 II 24-fir
1,00-yr » 24, hr'Rai,nfa',11=6.96'"
- - - - - - - - - You ngfFArqa=1-.160 ac-
2 I I I I 1 I
Ruhoff Volurie=0.230 of
N Rhnoff Depth=2.38I"
3 Tc=24.S mih
0
LL CNJ=58
- 4- - -I---------+------+---I--------I------I---------+---I--
1
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 266
Hydrograph for Subcatchment 12S: Bypass #2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.00
11.00
1.64
0.00
0.01
12.00
4.61
0.96
1.17
13.00
5.37
1.38
0.42
14.00
5.71
1.58
0.22
15.00
5.94
1.72
0.16
16.00
6.12
1.84
0.13
17.00
6.28
1.93
0.11
18.00
6.41
2.02
0.10
19.00
6.53
2.09
0.09
20.00
6.63
2.16
0.07
21.00
6.71
2.22
0.07
22.00
6.80
2.27
0.07
23.00
6.88
2.33
0.06
24.00
6.96
2.38
0.06
25.00
6.96
2.38
0.00
26.00
6.96
2.38
0.00
27.00
6.96
2.38
0.00
28.00
6.96
2.38
0.00
29.00
6.96
2.38
0.00
30.00
6.96
2.38
0.00
31.00
6.96
2.38
0.00
32.00
6.96
2.38
0.00
33.00
6.96
2.38
0.00
34.00
6.96
2.38
0.00
35.00
6.96
2.38
0.00
36.00
6.96
2.38
0.00
37.00
6.96
2.38
0.00
38.00
6.96
2.38
0.00
39.00
6.96
2.38
0.00
40.00
6.96
2.38
0.00
41.00
6.96
2.38
0.00
42.00
6.96
2.38
0.00
43.00
6.96
2.38
0.00
44.00
6.96
2.38
0.00
45.00
6.96
2.38
0.00
46.00
6.96
2.38
0.00
47.00
6.96
2.38
0.00
48.00
6.96
2.38
0.00
49.00
6.96
2.38
0.00
50.00
6.96
2.38
0.00
51.00
6.96
2.38
0.00
52.00
6.96
2.38
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.38
0.00
54.00
6.96
2.38
0.00
55.00
6.96
2.38
0.00
56.00
6.96
2.38
0.00
57.00
6.96
2.38
0.00
58.00
6.96
2.38
0.00
59.00
6.96
2.38
0.00
60.00
6.96
2.38
0.00
61.00
6.96
2.38
0.00
62.00
6.96
2.38
0.00
63.00
6.96
2.38
0.00
64.00
6.96
2.38
0.00
65.00
6.96
2.38
0.00
66.00
6.96
2.38
0.00
67.00
6.96
2.38
0.00
68.00
6.96
2.38
0.00
69.00
6.96
2.38
0.00
70.00
6.96
2.38
0.00
71.00
6.96
2.38
0.00
72.00
6.96
2.38
0.00
73.00
6.96
2.38
0.00
74.00
6.96
2.38
0.00
75.00
6.96
2.38
0.00
76.00
6.96
2.38
0.00
77.00
6.96
2.38
0.00
78.00
6.96
2.38
0.00
79.00
6.96
2.38
0.00
80.00
6.96
2.38
0.00
81.00
6.96
2.38
0.00
82.00
6.96
2.38
0.00
83.00
6.96
2.38
0.00
84.00
6.96
2.38
0.00
85.00
6.96
2.38
0.00
86.00
6.96
2.38
0.00
87.00
6.96
2.38
0.00
88.00
6.96
2.38
0.00
89.00
6.96
2.38
0.00
90.00
6.96
2.38
0.00
91.00
6.96
2.38
0.00
92.00
6.96
2.38
0.00
93.00
6.96
2.38
0.00
94.00
6.96
2.38
0.00
95.00
6.96
2.38
0.00
96.00
6.96
2.38
0.00
97.00
6.96
2.38
0.00
98.00
6.96
2.38
0.00
99.00
6.96
2.38
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 267
Summary for Subcatchment 13S: Pre -Development #3
Runoff = 19.26 cfs @ 12.15 hrs, Volume= 1.586 af, Depth= 2.10"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN Description
9.070 55 Woods, Good, HSG B
9.070 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
20.7 Direct Entry,
Subcatchment 13S: Pre -Development #3
Hydrograph
21
- - - -
-
- - 7 - - -
--------------�
- - T - - -
- - - T - -
- - - T - - - - -
- T - - - - - - + - - - - - - T - - -I - - - T - - -I-
---�---; --
■Runoff
20
- 19.26
cfs--�'---
---�'---
-------
- --�'---
------------------------------
- Type
1$
-- '-
- ---'
-- - --I-
--' - --'
--T---I---'t00
I * 'I�r 1T- I--�-7- I:--T-
16
-- �,-
----�---
---�---
---�---
---�---
-----Runoll Area4.00-ac-
15
14
---'-
-- -
--'---'----'---'----'---'---'----'----'---'---'-------'-----------'---'---
- ------
------
------+------+---Runoff
Voluxnw=1.5"af-
w 12
-- '-
-T---T--T---'r--
T--
-T-- T------T---'
-- -T Runoff �liep ill-- l� r_
3 11
----
- ------
------
------
------
-------------+- Ic-4V.-7�nlhr-
0 10
9
---'-
--J-
--'---'----'---'----'---'---'----'----'---'---'----'---'----'---'----'---'---
----'---
---'---i------i------i------L---'---
------LC14=55_
7
- -T-
-T---r-----r--T---r--T---r--T---r--+------r-----r------+--
6
-- ��-
----��---
---��---
---��---
---��---
------+------+------+------+--
5
---'-
--'---'----'---'----'---'---'----'----'---'---'----'---'----'---'----'---'---
4
-- --
1---1---1---1---1---'---1---'---1------L------i------L------+--
2
- -T --
-----T---1---T---I---T------T------T------T------T------T--
1
15 20
25 30
35 40
45 50 55
60 65 70 75 80 85 90 95
0
0 5 10
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 268
Hydrograph for Subcatchment 13S: Pre -Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.00
11.00
1.64
0.00
0.00
12.00
4.61
0.79
10.47
13.00
5.37
1.17
2.67
14.00
5.71
1.35
1.52
15.00
5.94
1.48
1.16
16.00
6.12
1.59
0.93
17.00
6.28
1.68
0.80
18.00
6.41
1.76
0.72
19.00
6.53
1.83
0.63
20.00
6.63
1.89
0.54
21.00
6.71
1.94
0.50
22.00
6.80
2.00
0.48
23.00
6.88
2.05
0.47
24.00
6.96
2.10
0.45
25.00
6.96
2.10
0.00
26.00
6.96
2.10
0.00
27.00
6.96
2.10
0.00
28.00
6.96
2.10
0.00
29.00
6.96
2.10
0.00
30.00
6.96
2.10
0.00
31.00
6.96
2.10
0.00
32.00
6.96
2.10
0.00
33.00
6.96
2.10
0.00
34.00
6.96
2.10
0.00
35.00
6.96
2.10
0.00
36.00
6.96
2.10
0.00
37.00
6.96
2.10
0.00
38.00
6.96
2.10
0.00
39.00
6.96
2.10
0.00
40.00
6.96
2.10
0.00
41.00
6.96
2.10
0.00
42.00
6.96
2.10
0.00
43.00
6.96
2.10
0.00
44.00
6.96
2.10
0.00
45.00
6.96
2.10
0.00
46.00
6.96
2.10
0.00
47.00
6.96
2.10
0.00
48.00
6.96
2.10
0.00
49.00
6.96
2.10
0.00
50.00
6.96
2.10
0.00
51.00
6.96
2.10
0.00
52.00
6.96
2.10
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.10
0.00
54.00
6.96
2.10
0.00
55.00
6.96
2.10
0.00
56.00
6.96
2.10
0.00
57.00
6.96
2.10
0.00
58.00
6.96
2.10
0.00
59.00
6.96
2.10
0.00
60.00
6.96
2.10
0.00
61.00
6.96
2.10
0.00
62.00
6.96
2.10
0.00
63.00
6.96
2.10
0.00
64.00
6.96
2.10
0.00
65.00
6.96
2.10
0.00
66.00
6.96
2.10
0.00
67.00
6.96
2.10
0.00
68.00
6.96
2.10
0.00
69.00
6.96
2.10
0.00
70.00
6.96
2.10
0.00
71.00
6.96
2.10
0.00
72.00
6.96
2.10
0.00
73.00
6.96
2.10
0.00
74.00
6.96
2.10
0.00
75.00
6.96
2.10
0.00
76.00
6.96
2.10
0.00
77.00
6.96
2.10
0.00
78.00
6.96
2.10
0.00
79.00
6.96
2.10
0.00
80.00
6.96
2.10
0.00
81.00
6.96
2.10
0.00
82.00
6.96
2.10
0.00
83.00
6.96
2.10
0.00
84.00
6.96
2.10
0.00
85.00
6.96
2.10
0.00
86.00
6.96
2.10
0.00
87.00
6.96
2.10
0.00
88.00
6.96
2.10
0.00
89.00
6.96
2.10
0.00
90.00
6.96
2.10
0.00
91.00
6.96
2.10
0.00
92.00
6.96
2.10
0.00
93.00
6.96
2.10
0.00
94.00
6.96
2.10
0.00
95.00
6.96
2.10
0.00
96.00
6.96
2.10
0.00
97.00
6.96
2.10
0.00
98.00
6.96
2.10
0.00
99.00
6.96
2.10
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 269
Summary for Subcatchment 14S: Post Development #3
Runoff = 19.09 cfs @ 12.15 hrs, Volume= 1.572 af, Depth= 2.10"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-yr - 24 hr Rainfall=6.96"
Area (ac) CN
Description
8.670 55
Woods, Good, HSG B
0.320 58
Woods/grass comb., Good, HSG B
8.990 55
Weighted Average
8.990
100.00% Pervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
20.7
Direct Entry,
Subcatchment 14S: Post Development #3
Hydrograph
21
--L---'------'---
---1---1---'---L---'---L---'---L---'---+---'---L------+--
■Runoff
20
19.09 cfs -----
------
------
------
------ I ---------I------�,I---
19
--y- -----------
I---rt---I-------li-------li-------li---+-�1
pel,11-2il4-ifr-
18
17
-- - - ---II
----�---
-- ----I---
---�---
---II
---�---
-- - - -I - --
---�-
'BOO r_* 4''IJ�rJ3a%nfAl[=6-gWj -
16
15
---'---'---'----'---'----'---'---'-------------RunoffArea=$�90
I I
I I
I I
I I I
I I at
'L--
14
--L- -L---1---L---1---1---1---1---1---1------+------L---'---L
--+--+---+--+---I---+---+--+------+---Runoff
--- ---
Volunw=1.572-af -
H 12
--y- - ------
------
------*------Y------rlunof_�epfl-.��r_
3-Tc=20.7
10
-mi fir
o
—
--L-
'--- L----� ---L--
i -- 56
8
--Y- -Y------Y------Y------Y------Y------Y------t------Y------Y--
7
T- T---I
- T - - -I_-
T-
- -I - T - - -I--
T - - -I-- T---I---T---I---T---I---T--
6
---'---
---'---
---'---
---'---
---'------'--- ---------'--- --
5
--L- -L---'---L---'---L---'---L---'---L------+------L-----L------+--
4
I I
-- ----'---
I I
---'---
I I
---'---+------+------+------+---'---
I I I
I I I I I I I I I
------+--
3
--+-- +------+------+------+------+------+------+------+------+--
2
�
--Y-- --I_
I
Y---I_--Y-
I
I I
Y------Y------+------+------Y------+--
I I
I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 270
Hydrograph for Subcatchment 14S: Post Development #3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.07
0.00
0.00
2.00
0.15
0.00
0.00
3.00
0.24
0.00
0.00
4.00
0.33
0.00
0.00
5.00
0.44
0.00
0.00
6.00
0.56
0.00
0.00
7.00
0.69
0.00
0.00
8.00
0.84
0.00
0.00
9.00
1.02
0.00
0.00
10.00
1.26
0.00
0.00
11.00
1.64
0.00
0.00
12.00
4.61
0.79
10.38
13.00
5.37
1.17
2.65
14.00
5.71
1.35
1.50
15.00
5.94
1.48
1.15
16.00
6.12
1.59
0.92
17.00
6.28
1.68
0.79
18.00
6.41
1.76
0.71
19.00
6.53
1.83
0.62
20.00
6.63
1.89
0.53
21.00
6.71
1.94
0.49
22.00
6.80
2.00
0.48
23.00
6.88
2.05
0.46
24.00
6.96
2.10
0.44
25.00
6.96
2.10
0.00
26.00
6.96
2.10
0.00
27.00
6.96
2.10
0.00
28.00
6.96
2.10
0.00
29.00
6.96
2.10
0.00
30.00
6.96
2.10
0.00
31.00
6.96
2.10
0.00
32.00
6.96
2.10
0.00
33.00
6.96
2.10
0.00
34.00
6.96
2.10
0.00
35.00
6.96
2.10
0.00
36.00
6.96
2.10
0.00
37.00
6.96
2.10
0.00
38.00
6.96
2.10
0.00
39.00
6.96
2.10
0.00
40.00
6.96
2.10
0.00
41.00
6.96
2.10
0.00
42.00
6.96
2.10
0.00
43.00
6.96
2.10
0.00
44.00
6.96
2.10
0.00
45.00
6.96
2.10
0.00
46.00
6.96
2.10
0.00
47.00
6.96
2.10
0.00
48.00
6.96
2.10
0.00
49.00
6.96
2.10
0.00
50.00
6.96
2.10
0.00
51.00
6.96
2.10
0.00
52.00
6.96
2.10
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
6.96
2.10
0.00
54.00
6.96
2.10
0.00
55.00
6.96
2.10
0.00
56.00
6.96
2.10
0.00
57.00
6.96
2.10
0.00
58.00
6.96
2.10
0.00
59.00
6.96
2.10
0.00
60.00
6.96
2.10
0.00
61.00
6.96
2.10
0.00
62.00
6.96
2.10
0.00
63.00
6.96
2.10
0.00
64.00
6.96
2.10
0.00
65.00
6.96
2.10
0.00
66.00
6.96
2.10
0.00
67.00
6.96
2.10
0.00
68.00
6.96
2.10
0.00
69.00
6.96
2.10
0.00
70.00
6.96
2.10
0.00
71.00
6.96
2.10
0.00
72.00
6.96
2.10
0.00
73.00
6.96
2.10
0.00
74.00
6.96
2.10
0.00
75.00
6.96
2.10
0.00
76.00
6.96
2.10
0.00
77.00
6.96
2.10
0.00
78.00
6.96
2.10
0.00
79.00
6.96
2.10
0.00
80.00
6.96
2.10
0.00
81.00
6.96
2.10
0.00
82.00
6.96
2.10
0.00
83.00
6.96
2.10
0.00
84.00
6.96
2.10
0.00
85.00
6.96
2.10
0.00
86.00
6.96
2.10
0.00
87.00
6.96
2.10
0.00
88.00
6.96
2.10
0.00
89.00
6.96
2.10
0.00
90.00
6.96
2.10
0.00
91.00
6.96
2.10
0.00
92.00
6.96
2.10
0.00
93.00
6.96
2.10
0.00
94.00
6.96
2.10
0.00
95.00
6.96
2.10
0.00
96.00
6.96
2.10
0.00
97.00
6.96
2.10
0.00
98.00
6.96
2.10
0.00
99.00
6.96
2.10
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 271
Summary for Pond 5P: BMP #1
Inflow Area = 12.980 ac, 0.00% Impervious, Inflow Depth = 2.87" for 100-yr - 24 hr event
Inflow =
67.14 cfs @
11.96 hrs,
Volume=
3.105 of
Outflow =
3.17 cfs @
13.40 hrs,
Volume=
2.345 af, Atten= 95%, Lag= 86.3 min
Primary =
3.17 cfs @
13.40 hrs,
Volume=
2.345 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 570.61' @ 13.40 hrs Surf.Area= 22,915 sf Storage= 76,632 cf
Plug -Flow detention time= 1,121.1 min calculated for 2.344 of (75% of inflow)
Center -of -Mass det. time= 1,025.7 min ( 1,868.2 - 842.6 )
Volume Invert
Avail.Storage Storage Description
#1 566.50'
137,597 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
566.50
13,995
0 0
567.00
15,551
7,387 7,387
568.00
17,503
16,527 23,914
569.00
19,519
18,511 42,425
570.00
21,600
20,560 62,984
571.00
23,745
22,673 85,657
572.00
25,954
24,850 110,506
573.00
28,228
27,091 137,597
Device Routing
Invert
Outlet Devices
#1 Primary
561.90'
36.0" Round RCP -Round 36"
L= 187.7' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 561.90' / 560.89' S= 0.0054 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
566.50'
1.7" Vert. WQ Orrfice C= 0.600
#3 Device 1
570.10'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 0.90
Width (feet) 2.50 2.50
#4 Device 1
571.00'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
571.80'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=3.16 cfs @ 13.40 hrs HW=570.61' (Free Discharge)
L1=RCP_Round 36" (Passes 3.16 cfs of 91.88 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.15 cfs @ 9.68 fps)
3=Custom Weir/Orifice (Weir Controls 3.01 cfs @ 2.35 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=566.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 272
--r--r--t--t--r--r--r------------------r--r--r--r--
Hydrograph
r--r--r--
-
--
--
-- ---------------I---
-- -- -- -- -- -- --
II
■ Inflow
❑ outflow
67.14 cfs
,- -
----
II
--------
IflowAt""12.98aa
II1--t�-_-
Primary
;s75
70
rII rI
rI
rI
I I I I
I-----1
---�Peak-Elev-570r61I
-forage=7.6.
c-
60
.I
- T--T
--r-
--
--
-----------------I
--IT--IT--r--r--T-- -- --
50
-,-I
45
N
-L--1--1--1--L--
---1---1---1---1---1---L--L--L--L--1--1--1-
40
,I
I I
- -
I
--
I
--
I
I I I I
I I I I I I I I I
-II --II --II
0 35
=-II
- T--T
-r-
--T-
-
-- - -I---I---I---I---i
-- -- --r--r--T--T--T--
a 30
25
-L--1--1--1--L--
---1---1---1---1---1---L--L--L--L--1--1--1-
20
---- - I-
-
--
------------------------------
---- --- -- -- --
15
10
3.17
cfs
0.00
cfs
----------------
0
0
5 10
15 20 25
30
35
40
45 50 55 60
65 70 75 80 85 90 95
Time (hours)
573
572
571
w
w
c
570
0
.�
w
w 569
568
567
Pond 5P: BMP #1
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 273
Pond 5P: BMP #1
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000 24,000 26,000 28,000 F Surface
❑ Storage
0 20,000 40,000 60,000 80,000 100,000 120,000
Storage (cubic -feet)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 274
Hydrograph for Pond 5P: BMP #1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
566.50
0.00
0.00
0.00
2.50
0.00
0
566.50
0.00
0.00
0.00
5.00
0.00
0
566.50
0.00
0.00
0.00
7.50
0.00
0
566.50
0.00
0.00
0.00
10.00
0.08
34
566.50
0.00
0.00
0.00
12.50
6.08
71,913
570.41
1.53
1.53
0.00
15.00
1.93
74,315
570.51
2.32
2.32
0.00
17.50
1.27
71,642
570.39
1.45
1.45
0.00
20.00
0.88
70,179
570.33
1.04
1.04
0.00
22.50
0.80
69,388
570.29
0.84
0.84
0.00
25.00
0.00
67,294
570.20
0.40
0.40
0.00
27.50
0.00
65,204
570.10
0.15
0.15
0.00
30.00
0.00
63,925
570.04
0.14
0.14
0.00
32.50
0.00
62,658
569.98
0.14
0.14
0.00
35.00
0.00
61,401
569.93
0.14
0.14
0.00
37.50
0.00
60,155
569.87
0.14
0.14
0.00
40.00
0.00
58,920
569.81
0.14
0.14
0.00
42.50
0.00
57,696
569.75
0.14
0.14
0.00
45.00
0.00
56,484
569.69
0.13
0.13
0.00
47.50
0.00
55,282
569.64
0.13
0.13
0.00
50.00
0.00
54,092
569.58
0.13
0.13
0.00
52.50
0.00
52,912
569.52
0.13
0.13
0.00
55.00
0.00
51,744
569.47
0.13
0.13
0.00
57.50
0.00
50,588
569.41
0.13
0.13
0.00
60.00
0.00
49,443
569.35
0.13
0.13
0.00
62.50
0.00
48,309
569.30
0.13
0.13
0.00
65.00
0.00
47,187
569.24
0.12
0.12
0.00
67.50
0.00
46,077
569.19
0.12
0.12
0.00
70.00
0.00
44,979
569.13
0.12
0.12
0.00
72.50
0.00
43,892
569.07
0.12
0.12
0.00
75.00
0.00
42,817
569.02
0.12
0.12
0.00
77.50
0.00
41,754
568.97
0.12
0.12
0.00
80.00
0.00
40,703
568.91
0.12
0.12
0.00
82.50
0.00
39,664
568.86
0.11
0.11
0.00
85.00
0.00
38,637
568.80
0.11
0.11
0.00
87.50
0.00
37,622
568.75
0.11
0.11
0.00
90.00
0.00
36,620
568.70
0.11
0.11
0.00
92.50
0.00
35,630
568.65
0.11
0.11
0.00
95.00
0.00
34,652
568.59
0.11
0.11
0.00
97.50
0.00
33,687
568.54
0.11
0.11
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 275
Stage -Discharge for Pond 5P: BMP #1
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
566.50
0.00
0.00
0.00
566.60
0.01
0.01
0.00
566.70
0.03
0.03
0.00
566.80
0.04
0.04
0.00
566.90
0.04
0.04
0.00
567.00
0.05
0.05
0.00
567.10
0.06
0.06
0.00
567.20
0.06
0.06
0.00
567.30
0.06
0.06
0.00
567.40
0.07
0.07
0.00
567.50
0.07
0.07
0.00
567.60
0.08
0.08
0.00
567.70
0.08
0.08
0.00
567.80
0.08
0.08
0.00
567.90
0.09
0.09
0.00
568.00
0.09
0.09
0.00
568.10
0.09
0.09
0.00
568.20
0.10
0.10
0.00
568.30
0.10
0.10
0.00
568.40
0.10
0.10
0.00
568.50
0.11
0.11
0.00
568.60
0.11
0.11
0.00
568.70
0.11
0.11
0.00
568.80
0.11
0.11
0.00
568.90
0.12
0.12
0.00
569.00
0.12
0.12
0.00
569.10
0.12
0.12
0.00
569.20
0.12
0.12
0.00
569.30
0.13
0.13
0.00
569.40
0.13
0.13
0.00
569.50
0.13
0.13
0.00
569.60
0.13
0.13
0.00
569.70
0.13
0.13
0.00
569.80
0.14
0.14
0.00
569.90
0.14
0.14
0.00
570.00
0.14
0.14
0.00
570.10
0.14
0.14
0.00
570.20
0.40
0.40
0.00
570.30
0.88
0.88
0.00
570.40
1.49
1.49
0.00
570.50
2.22
2.22
0.00
570.60
3.05
3.05
0.00
570.70
3.96
3.96
0.00
570.80
4.95
4.95
0.00
570.90
6.02
6.02
0.00
571.00
7.15
7.15
0.00
571.10
9.74
9.74
0.00
571.20
13.56
13.56
0.00
571.30
18.18
18.18
0.00
571.40
23.47
23.47
0.00
571.50
29.33
29.33
0.00
571.60
35.72
35.72
0.00
571.70
42.59
42.59
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
571.80
49.90
49.90
0.00
571.90
58.42
57.63
0.79
572.00
67.98
65.75
2.23
572.10
78.40
74.25
4.15
572.20
89.59
83.11
6.48
572.30
101.61
92.31
9.30
572.40
114.40
101.85
12.55
572.50
119.76
103.98
15.78
572.60
123.83
104.58
19.25
572.70
128.10
105.18
22.92
572.80
132.57
105.77
26.80
572.90
137.34
106.37
30.98
573.00
142.31
106.95
35.36

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 276
Stage -Area -Storage for Pond 5P: BMP #1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
566.50
13,995
0
566.60
14,306
1,415
566.70
14,617
2,861
566.80
14,929
4,339
566.90
15,240
5,847
567.00
15,551
7,387
567.10
15,746
8,951
567.20
15,941
10,536
567.30
16,137
12,140
567.40
16,332
13,763
567.50
16,527
15,406
567.60
16,722
17,068
567.70
16,917
18,750
567.80
17,113
20,452
567.90
17,308
22,173
568.00
17,503
23,914
568.10
17,705
25,674
568.20
17,906
27,454
568.30
18,108
29,255
568.40
18,309
31,076
568.50
18,511
32,917
568.60
18,713
34,778
568.70
18,914
36,660
568.80
19,116
38,561
568.90
19,317
40,483
569.00
19,519
42,425
569.10
19,727
44,387
569.20
19,935
46,370
569.30
20,143
48,374
569.40
20,351
50,399
569.50
20,560
52,444
569.60
20,768
54,510
569.70
20,976
56,598
569.80
21,184
58,706
569.90
21,392
60,834
570.00
21,600
62,984
570.10
21,815
65,155
570.20
22,029
67,347
570.30
22,243
69,561
570.40
22,458
71,796
570.50
22,673
74,052
570.60
22,887
76,330
570.70
23,102
78,630
570.80
23,316
80,950
570.90
23,530
83,293
571.00
23,745
85,657
571.10
23,966
88,042
571.20
24,187
90,450
571.30
24,408
92,879
571.40
24,629
95,331
571.50
24,850
97,805
571.60
25,070
100,301
571.70
25,291
102,819
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
571.80
25,512
105,359
571.90
25,733
107,922
572.00
25,954
110,506
572.10
26,181
113,113
572.20
26,409
115,742
572.30
26,636
118,395
572.40
26,864
121,070
572.50
27,091
123,767
572.60
27,318
126,488
572.70
27,546
129,231
572.80
27,773
131,997
572.90
28,001
134,786
573.00
28,228
137,597

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 277
Summary for Pond 6P: BMP #2
Inflow Area = 9.670 ac, 0.00% Impervious, Inflow Depth = 4.66" for 100-yr - 24 hr event
Inflow =
78.56 cfs @
11.95 hrs,
Volume=
3.753 of
Outflow =
48.21 cfs @
12.04 hrs,
Volume=
3.740 af, Atten= 39%, Lag= 5.1 min
Primary =
48.21 cfs @
12.04 hrs,
Volume=
3.740 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 563.05' @ 12.04 hrs Surf.Area= 19,511 sf Storage= 67,180 cf
Plug -Flow detention time= 499.8 min calculated for 3.740 of (100% of inflow)
Center -of -Mass det. time= 497.6 min ( 1,301.8 - 804.2 )
Volume Invert
Avail.Storage Storage Description
#1 558.50'
109,406 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
558.50
9,762
0 0
559.00
11,233
5,249 5,249
560.00
13,167
12,200 17,449
561.00
15,175
14,171 31,620
562.00
17,251
16,213 47,833
563.00
19,395
18,323 66,156
564.00
21,608
20,502 86,657
565.00
23,890
22,749 109,406
Device Routing
Invert
Outlet Devices
#1 Primary
553.90'
36.0" Round RCP -Round 36"
L= 92.5' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 553.90' / 553.00' S= 0.0097 '/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf
#2 Device 1
558.50'
2.5" Vert. WQ Orrfice C= 0.600
#3 Device 1
561.05'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 1.15
Width (feet) 1.00 1.00
#4 Device 1
562.20'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
563.95'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=46.95 cfs @ 12.04 hrs HW=563.04' (Free Discharge)
L1=RCP_Round 36" (Passes 46.95 cfs of 109.98 cfs potential flow)
�2=WQ Orrfice (Orifice Controls 0.35 cfs @ 10.14 fps)
3=Custom Weir/Orifice (Orifice Controls 6.66 cfs @ 5.79 fps)
4=Top of Box (Weir Controls 39.94 cfs @ 2.99 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=558.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 278
Hydrograph
78.56 CfS
-r--r--r--r-
- -------r--r--r--r--r--r--r--r--r--r-
-
■ Inflow
❑Outflow
-- -
- --
--
--
--
---------r
.i i r i
Inflow, �1ea=�.6/ O ac
■ Primary
- -
- -
- -
-
- -I - - - - - - - - - - - - - - -_
■Secondary
85
80f�+
T
i
T
T
7-I-
r r r r T 7 7
� �IevZ563.051--
�o
,� --', -
- -, --
-, --
-,---,---,------------
a;�-aige-67,180-e# -
65
60
48.21 cfs
--=--
- --
--
----
---------------------
'------------------------------',
- --
--' --' --' --' --' --'--'
ss
w5o
--
-1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1-
-
" 45
-1--1--1--J--J---1---1---1---1---1---L--L--L--L--1--1--1-
40
LL35
-
-+--+--
--
--
------------------
-- -- -- -- -- -- --
30
-
-+--+--+--+--+---------------r--r--r--r--r--+--+--+--
25
20
15
----------------------------
10
0.00 CfS
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
565
564
563
w
w
c
562
0
.�
w
w 561
560
559
Pond 6P: BMP #2
Stage -Discharge
0 20 40 60 80 100 120 140
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 279
Pond 6P: BMP #2
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 22,000
0 20,000 40,000 60,000 80,000 100,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 280
Hydrograph for Pond 6P: BMP #2
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
558.50
0.00
0.00
0.00
2.50
0.00
0
558.50
0.00
0.00
0.00
5.00
0.00
0
558.50
0.00
0.00
0.00
7.50
0.24
771
558.58
0.01
0.01
0.00
10.00
1.06
5,382
559.01
0.10
0.10
0.00
12.50
6.21
54,238
562.36
8.52
8.52
0.00
15.00
1.87
45,009
561.83
2.57
2.57
0.00
17.50
1.20
40,558
561.57
1.50
1.50
0.00
20.00
0.82
38,341
561.43
1.04
1.04
0.00
22.50
0.74
37,106
561.35
0.82
0.82
0.00
25.00
0.00
34,745
561.20
0.46
0.46
0.00
27.50
0.00
31,899
561.02
0.26
0.26
0.00
30.00
0.00
29,640
560.87
0.25
0.25
0.00
32.50
0.00
27,454
560.72
0.24
0.24
0.00
35.00
0.00
25,342
560.57
0.23
0.23
0.00
37.50
0.00
23,307
560.43
0.22
0.22
0.00
40.00
0.00
21,350
560.29
0.21
0.21
0.00
42.50
0.00
19,472
560.15
0.20
0.20
0.00
45.00
0.00
17,675
560.02
0.20
0.20
0.00
47.50
0.00
15,961
559.89
0.19
0.19
0.00
50.00
0.00
14,331
559.76
0.18
0.18
0.00
52.50
0.00
12,787
559.64
0.17
0.17
0.00
55.00
0.00
11,331
559.52
0.16
0.16
0.00
57.50
0.00
9,963
559.41
0.15
0.15
0.00
60.00
0.00
8,687
559.30
0.14
0.14
0.00
62.50
0.00
7,503
559.20
0.13
0.13
0.00
65.00
0.00
6,413
559.10
0.12
0.12
0.00
67.50
0.00
5,418
559.02
0.11
0.11
0.00
70.00
0.00
4,520
558.93
0.09
0.09
0.00
72.50
0.00
3,722
558.86
0.08
0.08
0.00
75.00
0.00
3,024
558.80
0.07
0.07
0.00
77.50
0.00
2,430
558.74
0.06
0.06
0.00
80.00
0.00
1,938
558.69
0.05
0.05
0.00
82.50
0.00
1,556
558.66
0.04
0.04
0.00
85.00
0.00
1,275
558.63
0.03
0.03
0.00
87.50
0.00
1,063
558.61
0.02
0.02
0.00
90.00
0.00
901
558.59
0.02
0.02
0.00
92.50
0.00
777
558.58
0.01
0.01
0.00
95.00
0.00
683
558.57
0.01
0.01
0.00
97.50
0.00
609
558.56
0.01
0.01
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 281
Stage -Discharge for Pond 6P: BMP #2
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
558.50
0.00
0.00
0.00
558.60
0.02
0.02
0.00
558.70
0.05
0.05
0.00
558.80
0.07
0.07
0.00
558.90
0.09
0.09
0.00
559.00
0.10
0.10
0.00
559.10
0.12
0.12
0.00
559.20
0.13
0.13
0.00
559.30
0.14
0.14
0.00
559.40
0.15
0.15
0.00
559.50
0.16
0.16
0.00
559.60
0.16
0.16
0.00
559.70
0.17
0.17
0.00
559.80
0.18
0.18
0.00
559.90
0.19
0.19
0.00
560.00
0.19
0.19
0.00
560.10
0.20
0.20
0.00
560.20
0.21
0.21
0.00
560.30
0.21
0.21
0.00
560.40
0.22
0.22
0.00
560.50
0.23
0.23
0.00
560.60
0.23
0.23
0.00
560.70
0.24
0.24
0.00
560.80
0.24
0.24
0.00
560.90
0.25
0.25
0.00
561.00
0.25
0.25
0.00
561.10
0.30
0.30
0.00
561.20
0.45
0.45
0.00
561.30
0.68
0.68
0.00
561.40
0.95
0.95
0.00
561.50
1.27
1.27
0.00
561.60
1.62
1.62
0.00
561.70
2.01
2.01
0.00
561.80
2.42
2.42
0.00
561.90
2.86
2.86
0.00
562.00
3.33
3.33
0.00
562.10
3.83
3.83
0.00
562.20
4.35
4.35
0.00
562.30
6.44
6.44
0.00
562.40
9.84
9.84
0.00
562.50
14.10
14.10
0.00
562.60
19.06
19.06
0.00
562.70
24.61
24.61
0.00
562.80
30.71
30.71
0.00
562.90
37.30
37.30
0.00
563.00
44.36
44.36
0.00
563.10
51.84
51.84
0.00
563.20
59.72
59.72
0.00
563.30
67.99
67.99
0.00
563.40
76.63
76.63
0.00
563.50
85.62
85.62
0.00
563.60
94.95
94.95
0.00
563.70
102.84
102.84
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
563.80
106.13
106.13
0.00
563.90
109.32
109.32
0.00
564.00
112.70
112.43
0.28
564.10
116.89
115.44
1.45
564.20
121.52
118.39
3.13
564.30
124.72
119.46
5.26
564.40
128.01
120.18
7.83
564.50
131.76
120.89
10.87
564.60
135.74
121.60
14.14
564.70
139.79
122.30
17.49
564.80
144.07
123.01
21.06
564.90
148.54
123.70
24.84
565.00
153.26
124.40
28.86

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 282
Stage -Area -Storage for Pond 6P: BMP #2
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
558.50
9,762
0
558.60
10,056
991
558.70
10,350
2,011
558.80
10,645
3,061
558.90
10,939
4,140
559.00
11,233
5,249
559.10
11,426
6,382
559.20
11,620
7,534
559.30
11,813
8,706
559.40
12,007
9,897
559.50
12,200
11,107
559.60
12,393
12,337
559.70
12,587
13,586
559.80
12,780
14,854
559.90
12,974
16,142
560.00
13,167
17,449
560.10
13,368
18,775
560.20
13,569
20,122
560.30
13,769
21,489
560.40
13,970
22,876
560.50
14,171
24,283
560.60
14,372
25,710
560.70
14,573
27,158
560.80
14,773
28,625
560.90
14,974
30,112
561.00
15,175
31,620
561.10
15,383
33,148
561.20
15,590
34,696
561.30
15,798
36,266
561.40
16,005
37,856
561.50
16,213
39,467
561.60
16,421
41,098
561.70
16,628
42,751
561.80
16,836
44,424
561.90
17,043
46,118
562.00
17,251
47,833
562.10
17,465
49,569
562.20
17,680
51,326
562.30
17,894
53,105
562.40
18,109
54,905
562.50
18,323
56,726
562.60
18,537
58,569
562.70
18,752
60,434
562.80
18,966
62,320
562.90
19,181
64,227
563.00
19,395
66,156
563.10
19,616
68,106
563.20
19,838
70,079
563.30
20,059
72,074
563.40
20,280
74,091
563.50
20,502
76,130
563.60
20,723
78,191
563.70
20,944
80,274
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
563.80
21,165
82,380
563.90
21,387
84,508
564.00
21,608
86,657
564.10
21,836
88,829
564.20
22,064
91,024
564.30
22,293
93,242
564.40
22,521
95,483
564.50
22,749
97,747
564.60
22,977
100,033
564.70
23,205
102,342
564.80
23,434
104,674
564.90
23,662
107,029
565.00
23,890
109,406

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 283
Summary for Pond 7P: BMP #3
Inflow Area = 6.900 ac, 0.00% Impervious, Inflow Depth = 4.55" for 100-yr - 24 hr event
Inflow =
54.97 cfs @
11.95 hrs,
Volume=
2.615 of
Outflow =
6.52 cfs @
12.27 hrs,
Volume=
2.449 af, Atten= 88%, Lag= 19.0 min
Primary =
6.52 cfs @
12.27 hrs,
Volume=
2.449 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Peak Elev= 573.17' @ 12.27 hrs Surf.Area= 16,167 sf Storage= 59,816 cf
Plug -Flow detention time= 766.1 min calculated for 2.447 of (94% of inflow)
Center -of -Mass det. time= 732.7 min ( 1,539.4 - 806.6 )
Volume Invert
Avail.Storage Storage Description
#1 568.50'
91,933 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
568.50
9,080
0 0
569.00
10,331
4,853 4,853
570.00
11,639
10,985 15,838
571.00
13,003
12,321 28,159
572.00
14,424
13,714 41,872
573.00
15,901
15,163 57,035
574.00
17,435
16,668 73,703
575.00
19,025
18,230 91,933
Device Routing
Invert
Outlet Devices
#1 Primary
565.31'
24.0" Round RCP -Round 24"
L= 61.2' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 565.31' / 565.00' S= 0.0051 T Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Device 1
568.50'
1.7" Vert. WQ Orfice C= 0.600
#3 Device 1
571.20'
Custom Weir/Orifice, Cv= 2.62 (C= 3.28)
Head (feet) 0.00 2.30
Width (feet) 0.70 0.70
#4 Device 1
573.50'
48.0" x 48.0" Horiz. Top of Box C= 0.600
Limited to weir flow at low heads
#5 Secondary
574.00'
10.0' long x 10.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=6.51 cfs @ 12.27 hrs HW=573.17' (Free Discharge)
L1=RCP_Round 24" (Passes 6.51 cfs of 44.71 cfs potential flow)
�2=WQ Orfice (Orifice Controls 0.16 cfs @ 10.33 fps)
3=Custom Weir/Orifice (Weir Controls 6.35 cfs @ 4.60 fps)
4=Top of Box ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=568.50' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 284
'1.7iL• f/ A =31�I I Vic%?
Hydrograph
-"
-I - -I - -I - --
I I
■ Inflow54.97fS ❑Outflow
I 1
��f��lGA=��70�V
M Primary
60
- _
T T
■Secondary
--T-
-T--T--T-- -----li---li---li---li--•
�-IeY-573.47,--
55
vak
50
--T-
-T--T--T--T---------------
-Starage"_591W816-cfi -
45
-
- ------------------I--- ----- ----------
40
-L-
-1--1--1--J--�---1---1---1---1---1---L--L--L--L--1--1--1-
w 35
V
30 ��I
0
- - T -
I
- T - - T - - T - - T - - T - - -I- - -I- - -I- - -I- - -I- - - T - - T - - T - - T - - T - - T - - T - -
I I I I I I I I I I I I I I I I I
LL 25
20
L _ _ L _ _ L _ _ L _ _ L _ _ -
15
6.52
- + + + - - + - - + - - -I - - -I - - - - - - - - - I- - - + - - + - - + - - + - - + - - + - - + -
cfs
10
0.00 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
575
574
573
w
w
c
572
0
.�
w
w 571
570
569
Pond 7P: BMP #3
Stage -Discharge
0 10 20 30 40 50 60 70
Discharge (cfs)
■ Total
■ Primary
■ Secondary

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 285
Pond 7P: BMP #3
Stage -Area -Storage
Surface/Horizontal/Wetted Area (sq-ft)
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
Storage (cubic -feet)
Surface
❑ Storage

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 286
Hydrograph for Pond 7P: BMP #3
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
568.50
0.00
0.00
0.00
2.50
0.00
0
568.50
0.00
0.00
0.00
5.00
0.00
0
568.50
0.00
0.00
0.00
7.50
0.15
404
568.54
0.00
0.00
0.00
10.00
0.71
3,522
568.87
0.04
0.04
0.00
12.50
4.37
58,995
573.12
6.27
6.27
0.00
15.00
1.32
43,698
572.13
2.19
2.19
0.00
17.50
0.85
38,789
571.78
1.16
1.16
0.00
20.00
0.58
36,644
571.63
0.78
0.78
0.00
22.50
0.52
35,488
571.55
0.60
0.60
0.00
25.00
0.00
33,644
571.41
0.35
0.35
0.00
27.50
0.00
31,545
571.26
0.16
0.16
0.00
30.00
0.00
30,361
571.17
0.12
0.12
0.00
32.50
0.00
29,269
571.08
0.12
0.12
0.00
35.00
0.00
28,195
571.00
0.12
0.12
0.00
37.50
0.00
27,139
570.92
0.12
0.12
0.00
40.00
0.00
26,101
570.84
0.11
0.11
0.00
42.50
0.00
25,081
570.76
0.11
0.11
0.00
45.00
0.00
24,080
570.68
0.11
0.11
0.00
47.50
0.00
23,097
570.60
0.11
0.11
0.00
50.00
0.00
22,132
570.52
0.11
0.11
0.00
52.50
0.00
21,187
570.45
0.10
0.10
0.00
55.00
0.00
20,261
570.37
0.10
0.10
0.00
57.50
0.00
19,354
570.30
0.10
0.10
0.00
60.00
0.00
18,466
570.22
0.10
0.10
0.00
62.50
0.00
17,598
570.15
0.10
0.10
0.00
65.00
0.00
16,750
570.08
0.09
0.09
0.00
67.50
0.00
15,921
570.01
0.09
0.09
0.00
70.00
0.00
15,112
569.94
0.09
0.09
0.00
72.50
0.00
14,324
569.87
0.09
0.09
0.00
75.00
0.00
13,556
569.80
0.08
0.08
0.00
77.50
0.00
12,809
569.74
0.08
0.08
0.00
80.00
0.00
12,082
569.67
0.08
0.08
0.00
82.50
0.00
11,376
569.61
0.08
0.08
0.00
85.00
0.00
10,691
569.55
0.07
0.07
0.00
87.50
0.00
10,027
569.49
0.07
0.07
0.00
90.00
0.00
9,384
569.43
0.07
0.07
0.00
92.50
0.00
8,763
569.37
0.07
0.07
0.00
95.00
0.00
8,163
569.31
0.07
0.07
0.00
97.50
0.00
7,585
569.26
0.06
0.06
0.00

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 287
Stage -Discharge for Pond 7P: BMP #3
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
568.50
0.00
0.00
0.00
568.60
0.01
0.01
0.00
568.70
0.03
0.03
0.00
568.80
0.04
0.04
0.00
568.90
0.04
0.04
0.00
569.00
0.05
0.05
0.00
569.10
0.06
0.06
0.00
569.20
0.06
0.06
0.00
569.30
0.06
0.06
0.00
569.40
0.07
0.07
0.00
569.50
0.07
0.07
0.00
569.60
0.08
0.08
0.00
569.70
0.08
0.08
0.00
569.80
0.08
0.08
0.00
569.90
0.09
0.09
0.00
570.00
0.09
0.09
0.00
570.10
0.09
0.09
0.00
570.20
0.10
0.10
0.00
570.30
0.10
0.10
0.00
570.40
0.10
0.10
0.00
570.50
0.11
0.11
0.00
570.60
0.11
0.11
0.00
570.70
0.11
0.11
0.00
570.80
0.11
0.11
0.00
570.90
0.12
0.12
0.00
571.00
0.12
0.12
0.00
571.10
0.12
0.12
0.00
571.20
0.12
0.12
0.00
571.30
0.20
0.20
0.00
571.40
0.33
0.33
0.00
571.50
0.51
0.51
0.00
571.60
0.71
0.71
0.00
571.70
0.94
0.94
0.00
571.80
1.20
1.20
0.00
571.90
1.48
1.48
0.00
572.00
1.78
1.78
0.00
572.10
2.10
2.10
0.00
572.20
2.44
2.44
0.00
572.30
2.79
2.79
0.00
572.40
3.16
3.16
0.00
572.50
3.55
3.55
0.00
572.60
3.95
3.95
0.00
572.70
4.37
4.37
0.00
572.80
4.80
4.80
0.00
572.90
5.24
5.24
0.00
573.00
5.70
5.70
0.00
573.10
6.17
6.17
0.00
573.20
6.65
6.65
0.00
573.30
7.14
7.14
0.00
573.40
7.65
7.65
0.00
573.50
8.17
8.17
0.00
573.60
10.28
10.28
0.00
573.70
13.71
13.71
0.00
Elevation Discharge Primary Secondary
(feet)
(cfs)
(cfs)
(cfs)
573.80
18.00
18.00
0.00
573.90
23.00
23.00
0.00
574.00
28.61
28.61
0.00
574.10
35.54
34.75
0.79
574.20
43.62
41.39
2.23
574.30
52.64
48.49
4.15
574.40
55.43
48.95
6.48
574.50
58.58
49.28
9.30
574.60
62.16
49.61
12.55
574.70
65.72
49.94
15.78
574.80
69.51
50.26
19.25
574.90
73.50
50.58
22.92
575.00
77.70
50.90
26.80

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 288
Stage -Area -Storage for Pond 7P: BMP #3
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
568.50
9,080
0
568.60
9,330
921
568.70
9,580
1,866
568.80
9,831
2,837
568.90
10,081
3,832
569.00
10,331
4,853
569.10
10,462
5,892
569.20
10,593
6,945
569.30
10,723
8,011
569.40
10,854
9,090
569.50
10,985
10,182
569.60
11,116
11,287
569.70
11,247
12,405
569.80
11,377
13,536
569.90
11,508
14,680
570.00
11,639
15,838
570.10
11,775
17,008
570.20
11,912
18,193
570.30
12,048
19,391
570.40
12,185
20,602
570.50
12,321
21,828
570.60
12,457
23,067
570.70
12,594
24,319
570.80
12,730
25,585
570.90
12,867
26,865
571.00
13,003
28,159
571.10
13,145
29,466
571.20
13,287
30,788
571.30
13,429
32,124
571.40
13,571
33,474
571.50
13,714
34,838
571.60
13,856
36,216
571.70
13,998
37,609
571.80
14,140
39,016
571.90
14,282
40,437
572.00
14,424
41,872
572.10
14,572
43,322
572.20
14,719
44,787
572.30
14,867
46,266
572.40
15,015
47,760
572.50
15,163
49,269
572.60
15,310
50,793
572.70
15,458
52,331
572.80
15,606
53,884
572.90
15,753
55,452
573.00
15,901
57,035
573.10
16,054
58,633
573.20
16,208
60,246
573.30
16,361
61,874
573.40
16,515
63,518
573.50
16,668
65,177
573.60
16,821
66,851
573.70
16,975
68,541
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
573.80
17,128
70,246
573.90
17,282
71,967
574.00
17,435
73,703
574.10
17,594
75,454
574.20
17,753
77,222
574.30
17,912
79,005
574.40
18,071
80,804
574.50
18,230
82,619
574.60
18,389
84,450
574.70
18,548
86,297
574.80
18,707
88,160
574.90
18,866
90,038
575.00
19,025
91,933

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 289
Summary for Link 17L: Post Development #2
Inflow Area = 8.060 ac, 0.00% Impervious, Inflow Depth > 3.99" for 100-yr - 24 hr event
Inflow = 9.05 cfs @ 12.21 hrs, Volume= 2.679 of
Primary = 9.05 cfs @ 12.21 hrs, Volume= 2.679 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 17L: Post Development #2
Hydrograph
I
I I I I I I I I I I I I I I I I
■Inflow
10
--+---+--+--+---+--+--+---+--+--+---+--+--+---+--+-----
❑Primary
9.05
cfs inflOW Aires=8.0'160'�I ac
9
I
I I I I I
-------------------------------
8
I
I
-- L
I I I I I I I I I I I I I I I I I
- L -- L---'--- L -- L- - -'- -- L---------+---'--- L--+- - -'--- L -- L---'--
7
--
r-- ------+--y------+---------+------r--+------r--------
6
y
I
I I I I I I I I I I I I I I I I
-- -
I I I I I I I
U
I
I I I I I I I I I I I I I I I I
3 5-
0
LL
I
I I I I I I I I I I I I I I I I
4-
3-
2
---
-----------------------------------------
------------
1
0
0 5
10
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 290
Hydrograph for Link 17L: Post Development #2
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.00
0.00
0.00
8.00
0.01
0.00
0.01
9.00
0.03
0.00
0.03
10.00
0.04
0.00
0.04
11.00
0.07
0.00
0.07
12.00
5.09
0.00
5.09
13.00
5.48
0.00
5.48
14.00
3.42
0.00
3.42
15.00
2.35
0.00
2.35
16.00
1.75
0.00
1.75
17.00
1.39
0.00
1.39
18.00
1.16
0.00
1.16
19.00
1.00
0.00
1.00
20.00
0.86
0.00
0.86
21.00
0.75
0.00
0.75
22.00
0.69
0.00
0.69
23.00
0.65
0.00
0.65
24.00
0.61
0.00
0.61
25.00
0.35
0.00
0.35
26.00
0.24
0.00
0.24
27.00
0.18
0.00
0.18
28.00
0.14
0.00
0.14
29.00
0.12
0.00
0.12
30.00
0.12
0.00
0.12
31.00
0.12
0.00
0.12
32.00
0.12
0.00
0.12
33.00
0.12
0.00
0.12
34.00
0.12
0.00
0.12
35.00
0.12
0.00
0.12
36.00
0.12
0.00
0.12
37.00
0.12
0.00
0.12
38.00
0.12
0.00
0.12
39.00
0.12
0.00
0.12
40.00
0.11
0.00
0.11
41.00
0.11
0.00
0.11
42.00
0.11
0.00
0.11
43.00
0.11
0.00
0.11
44.00
0.11
0.00
0.11
45.00
0.11
0.00
0.11
46.00
0.11
0.00
0.11
47.00
0.11
0.00
0.11
48.00
0.11
0.00
0.11
49.00
0.11
0.00
0.11
50.00
0.11
0.00
0.11
51.00
0.11
0.00
0.11
52.00
0.10
0.00
0.10
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.10
0.00
0.10
54.00
0.10
0.00
0.10
55.00
0.10
0.00
0.10
56.00
0.10
0.00
0.10
57.00
0.10
0.00
0.10
58.00
0.10
0.00
0.10
59.00
0.10
0.00
0.10
60.00
0.10
0.00
0.10
61.00
0.10
0.00
0.10
62.00
0.10
0.00
0.10
63.00
0.09
0.00
0.09
64.00
0.09
0.00
0.09
65.00
0.09
0.00
0.09
66.00
0.09
0.00
0.09
67.00
0.09
0.00
0.09
68.00
0.09
0.00
0.09
69.00
0.09
0.00
0.09
70.00
0.09
0.00
0.09
71.00
0.09
0.00
0.09
72.00
0.09
0.00
0.09
73.00
0.09
0.00
0.09
74.00
0.09
0.00
0.09
75.00
0.08
0.00
0.08
76.00
0.08
0.00
0.08
77.00
0.08
0.00
0.08
78.00
0.08
0.00
0.08
79.00
0.08
0.00
0.08
80.00
0.08
0.00
0.08
81.00
0.08
0.00
0.08
82.00
0.08
0.00
0.08
83.00
0.08
0.00
0.08
84.00
0.08
0.00
0.08
85.00
0.07
0.00
0.07
86.00
0.07
0.00
0.07
87.00
0.07
0.00
0.07
88.00
0.07
0.00
0.07
89.00
0.07
0.00
0.07
90.00
0.07
0.00
0.07
91.00
0.07
0.00
0.07
92.00
0.07
0.00
0.07
93.00
0.07
0.00
0.07
94.00
0.07
0.00
0.07
95.00
0.07
0.00
0.07
96.00
0.06
0.00
0.06
97.00
0.06
0.00
0.06
98.00
0.06
0.00
0.06
99.00
0.06
0.00
0.06

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 291
Summary for Link 18L: Post Development #1
Inflow Area = 28.230 ac, 3.61 % Impervious, Inflow Depth > 3.19" for 100-yr - 24 hr event
Inflow = 67.22 cfs @ 12.05 hrs, Volume= 7.514 of
Primary = 67.22 cfs @ 12.05 hrs, Volume= 7.514 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-99.00 hrs, dt= 0.05 hrs
Link 18L: Post Development #1
Hydrograph
75
-------'----'--------------------------------------'--
■Inflow
70
67.22 cfs
t--t------
--t---I---t----
I- t-- I- t--t ----
�f�flQw'Qrea=2_$:3� aq
❑ Primary
65
_
60
--r
-r--r
------r--r
------r
---------r------r
--r------r--r-----
55-
-- L
- L --
L-
- -'--- L --
L---'---
1------'---
1---'--- L -- 1---'--- L -- L- - -'--
50
---rt----------------r--7------r--,---i--
45
--I
-L-----'---L--L---1---1---1------L------L--L------L-----'--
N
V40
_ -
-r--�
r--1
T
T r--7 r--
3
0 35
--I
-L--
---'---
--
---1---1---1---1---1---1---L--1------L--
---'--
30
25
20
15
10
5
0
0 5
10 15
20
25
30 35
40
45 50 55
60 65 70 75 80 85 90 95
Time (hours)

Millbridge Phase 7E Type 1124-hr 100-yr- 24 hrRainfall=6.96"
Prepared by WK Dickson & Co. Printed 11/12/2019
HydroCAD®10.00-15 s/n 01460 ©2015 HydroCAD Software Solutions LLC Page 292
Hydrograph for Link 18L: Post Development #1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
1.00
0.00
0.00
0.00
2.00
0.00
0.00
0.00
3.00
0.00
0.00
0.00
4.00
0.00
0.00
0.00
5.00
0.00
0.00
0.00
6.00
0.00
0.00
0.00
7.00
0.01
0.00
0.01
8.00
0.03
0.00
0.03
9.00
0.07
0.00
0.07
10.00
0.16
0.00
0.16
11.00
0.52
0.00
0.52
12.00
59.28
0.00
59.28
13.00
9.76
0.00
9.76
14.00
7.52
0.00
7.52
15.00
5.79
0.00
5.79
16.00
4.60
0.00
4.60
17.00
3.80
0.00
3.80
18.00
3.30
0.00
3.30
19.00
2.88
0.00
2.88
20.00
2.49
0.00
2.49
21.00
2.23
0.00
2.23
22.00
2.08
0.00
2.08
23.00
1.97
0.00
1.97
24.00
1.88
0.00
1.88
25.00
0.86
0.00
0.86
26.00
0.55
0.00
0.55
27.00
0.42
0.00
0.42
28.00
0.40
0.00
0.40
29.00
0.39
0.00
0.39
30.00
0.39
0.00
0.39
31.00
0.38
0.00
0.38
32.00
0.38
0.00
0.38
33.00
0.38
0.00
0.38
34.00
0.37
0.00
0.37
35.00
0.37
0.00
0.37
36.00
0.37
0.00
0.37
37.00
0.36
0.00
0.36
38.00
0.36
0.00
0.36
39.00
0.35
0.00
0.35
40.00
0.35
0.00
0.35
41.00
0.35
0.00
0.35
42.00
0.34
0.00
0.34
43.00
0.34
0.00
0.34
44.00
0.33
0.00
0.33
45.00
0.33
0.00
0.33
46.00
0.33
0.00
0.33
47.00
0.32
0.00
0.32
48.00
0.32
0.00
0.32
49.00
0.31
0.00
0.31
50.00
0.31
0.00
0.31
51.00
0.30
0.00
0.30
52.00
0.30
0.00
0.30
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.29
0.00
0.29
54.00
0.29
0.00
0.29
55.00
0.29
0.00
0.29
56.00
0.28
0.00
0.28
57.00
0.28
0.00
0.28
58.00
0.27
0.00
0.27
59.00
0.27
0.00
0.27
60.00
0.26
0.00
0.26
61.00
0.26
0.00
0.26
62.00
0.25
0.00
0.25
63.00
0.25
0.00
0.25
64.00
0.24
0.00
0.24
65.00
0.24
0.00
0.24
66.00
0.24
0.00
0.24
67.00
0.23
0.00
0.23
68.00
0.23
0.00
0.23
69.00
0.22
0.00
0.22
70.00
0.22
0.00
0.22
71.00
0.21
0.00
0.21
72.00
0.21
0.00
0.21
73.00
0.20
0.00
0.20
74.00
0.20
0.00
0.20
75.00
0.19
0.00
0.19
76.00
0.19
0.00
0.19
77.00
0.18
0.00
0.18
78.00
0.18
0.00
0.18
79.00
0.17
0.00
0.17
80.00
0.17
0.00
0.17
81.00
0.16
0.00
0.16
82.00
0.15
0.00
0.15
83.00
0.15
0.00
0.15
84.00
0.14
0.00
0.14
85.00
0.14
0.00
0.14
86.00
0.14
0.00
0.14
87.00
0.13
0.00
0.13
88.00
0.13
0.00
0.13
89.00
0.13
0.00
0.13
90.00
0.13
0.00
0.13
91.00
0.12
0.00
0.12
92.00
0.12
0.00
0.12
93.00
0.12
0.00
0.12
94.00
0.12
0.00
0.12
95.00
0.12
0.00
0.12
96.00
0.12
0.00
0.12
97.00
0.11
0.00
0.11
98.00
0.11
0.00
0.11
99.00
0.11
0.00
0.11