SW6170601 - DaVita Rockfish (3)

Stormwater
Report
RECEIVE,)
JUN d 6 2017
'
NR` SAND 00ALITy
STORMWATER pERNIJ; , TTJNG
DaVita - Rockfish
Project Location: Paraclete Drive, Hoke County, North Carolina Project #: 17-021
Designer:
Triad Design Group, P.C.
4807-C Koger Blvd
Greensboro, NC 27407
�N CARS.
09 ;
May 25, 2017
triaddesigngroup
ARCHITECTURES ENGINEERING I INTERIOR DESIGN
4807 - C Koger Boulevard, Greensboro, NC 27407 1 T - 336-216-8282 F-336-218-8010 I www.triad-designgroup.com

STORMWATER NARRATIVE:
PROJECT DESCRIPTION
The proposed project is located on Paraclete Drive in Hoke County, NC. The site is on a newly
established lot (Lot 4) in the Paraclete Real Estate Subdivision The new lot is located on the south side
of Paraclete Drive approximately 930 feet east of the intersection of Paraclete Drive and Brock Road.
The site is approximately 1.502 total acres with no existing built upon area on site. A total of 0.86 acres
of BUA is proposed. Approximately 50% of the site is wooded with a combination of deciduous and
evergreen trees. The proposed project will consist of a 9,060 sf, 1 story building along with drives and
parking areas for the proposed facility. Grading for the proposed expansions will require the disturbance
of approximately 1.50 acres with fills of approximately 1 to 2 feet to reach finished grades. The site is
not expected to balance therefore will require the import of structural fill. The selected contractor will be
required to import fill from a previously approved site or will be required to permit the site where the
borrow material will originate from. It will be the responsibility of the contractor to permit the borrow site
if the identified site has not been previously permitted.
EXISTING SITE CONDITIONS
The subject project is proposed on a 1.502 acre site in Hoke County NC. The project site is
approximately 50% wooded with a combination of evergreens and hardwoods. The site crowns near the
middle and slopes to the north and south. Grades range from 248 down to 243 msl. There are no
streams, ponds, or wetlands located on the site. Public utilities (water and sewer) are available to the
- site and are provided by Hoke County.
ADJACENT AREAS
The site is bordered by undeveloped land to the east and west, Paraclete Drive to the north, and
Fayetteville Road to the south.
SOILS
The soils present within the project area are-
FaB - Faceville Loamy Sand, 2 to 6 Percent Slopes, Group B
NoA - Norfolk Loamy Sand, 0 to 2 Percent Slopes, Group A
Ra - Rains Sandy Loam, 0 to 2 Percent Slopes, Group B
STORMWATER CONSIDERATIONS
The additional impervious area created by the proposed project will be treated for water quality and water
quantity by a combination of StormFilters and dry detention ponds designed to meet the Hoke County
and NCDEQ standards. Runoff from all built -upon areas will be conveyed to a StormFilter system where
the first inch of runoff will be treated for water quality. Flows in excess of the design storm will bypass
the system and flow into dry detention areas where the flows exiting the site will be reduced to pre -
development levels.
CONSTRUCTION SEQUENCE
The site will be developed according to the construction sequence shown Sheet C2.2A of the plans and
contained in this document. Some deviations from this sequence may be required due to local site
conditions, or unanticipated problems. These changes will be coordinated through the engineer and
NCDEQ inspections staff. All work must meet NCDEQ standards. A pre -construction meeting between
the grading contractor and the NCDEQ inspection staff may be required. A copy of the grading permit
and approved plans must be kept on the job site at all times. Additional pre -construction meetings with

other interested parties may be required.
CALCULATIONS
All calculations necessary for the design of erosion and sediment control devices and Stormwater
Control Measures (SCM) are in accordance with the NCDEQ erosion and sediment control manual,
NCDEQ Stormwater manual, and NCDOT drainage manual. All hydrologic and hydraulic computations
are included in the plans
Treatment Volume Pond Area 1
Pond Area 2
Total
Required 696 75 cf
1301.25 cf
1998.00 cf
Provided 697 00 cf
1306.00 cf
2003.00 cf
Predevelopment —
1.653 cfs
2.105 cfs
1yr 0 642 cfs
0.752 cfs
6 346 cfs
2yr 1 304 cfs
10yr 3.674 cfs
1 00y 8.317 cfs
Post Development — Pond Area 1
Pond Area 2
Total
1 yr 1.216 cfs
2 312 cfs
3 528 cfs
2yr 1.536 cfs
2.851 cfs
4 387 cfs
10yr 2.409 cfs
4 323 cfs
6.732 cfs
1 00y 3.799 cfs
6 676 cfs
10 475 cfs
Routed Flows Leaving Site —
1yr
0 227 cfs
0.372 cfs
0 599 cfs
2yr
0.310 cfs
0.479 cfs
0.789 cfs
10yr
0 455 cfs
1.653 cfs
2.105 cfs
1 00y
0.752 cfs
6 346 cfs
6 909 cfs

Name DaVita Rockfish
Location Paraclete Drive
Drainage Area DA1, DA2, DA3 DA4
Existing BUA
0 Acres
Existing Pervious Area
1 22 Acres
Hydrologic Soils Group
B
CN
61
Tc
6.6 min
apre 1 yr
0.642 cfs "
2yr
1.304 ds
10yr
3 674 cfs _
1 00y
8 317 cfs -
Date 5/24/2017
Revised
Project # 14-046
Designed By MWJ
Checked By
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282'336-218-8010 Fax
Site Su
Site
I 1.22 Acres I
sed BUA0
78 Acres
sed Pervious Area
0 44 Acres
logic Soils Group
B
84.66
5 min
DA -1 DA -2
DA -3
DA4
1 yr
"i° 3:528cisJ,
0 657
0 559
1 537
0 775
ted 2yr
4,387 cfs
0 816
072
1 876
0 975
10yr
6.731
1 247
1 161
2 802
1 521
1 00y
10.476 cfs.
1 935
1 864
4 288
2 389
1yr
2yr
10yr
1 00y
0 599 cfs
0 789 ds
2 105 cfs
6 909 ds
triaddesigngroup
ARCHrrECTURE I ENGINEERING I INTERIOR DESIGN
4807-C Koger Bou6vard Greensboro NC 27407 1 T-336.218.8282 F 3362188010 I wvnv triad designgroup cam

STORMFILTER DESIGN
INFORMATION

CLl\.\ I // ® Determining Number of
%O 'Cartridges for Volume-Based
ENGINEERED SOLUTIONS Design in NC
Design Engineer: �1 JDP Blue Cells =Input
Date 3/27/2017 Black Cells = Calculation
Site Information
Project Name
Project State
Project Location
Drainage Area, Ad
Impervious Area, Ai
Pervious Area, Ap
% Impervious
Runoff Coefficient, Rv
Water Quality Volume Calculations
Design storm rainfall depth, Rd
Water quality volume, WQV
Storage Component Calculations
Capture 75% of WQV
Pretreatment credit (estimated or calculated), %pre
Mass loading calculations
Mean Annual Rainfall, P
Agency required % removal
Percent Runoff Capture (% capture)
Mean Annual Runoff,Vt
Event Mean Concentration of Pollutant, EMC
Annual Mass Load, Mtotal
Filter System
Filtration brand
Cartridge height
Cartridge Quantity Calculation
Mass removed by pretreatment system, Mpre
Mass load to filters after pretreatment, Mit
Estimate the required filter efficiency, Etilter
Mass to be captured by filters, Mutter
Maximum Cartridge Flow rate, Qcan
Mass load per cartridge, Mart (lbs)
Number of Cartridges required, Nme,
Maximum Treatment Capacity
SUMMARY
Davita Rockfish S
North Carolina
Raeford
0.31 ac
0.27 ac
0.04
86%
0.83
1.0 in
928.4 fe
696.3 fP
30%
=0.05+0.9*(AVAd)
=Ad* Rv* Rd* (43560/ 12)
=0.75*WQV
46 in
85%
90%
38,435 ft'=P*Ad*Rv*(43560/12)*%capture
70.0 mg/I (Typically 60 - Residential/Office, 7D - Commercial, too -Industrial)
167.86 lbs =EMC*Vt*(28-3)*(0.000001)*(2-2046)
StormFilter
27 in
50 lbs
=Mtotal * %removal
117 lbs
=Mtotal - Mpre
79%
=1+(%removal - 1)/(1 - %pre)
92 lbs
=Mpassl * Efilter
7.5 gpm =q * (7-5 ft2/cartrldge)
54 lbs
=lookup mass load per cartridge
2
=ROUNDUP(Mfilter/Mcart,O)
0.03
=Nmass*(Qcart/449)
Maximum Treatment Flow Rate, cfs 0.03
Cartridge Flow Rate, gpm 7.5
Number of Cartridges 2

Name. DaVita Rockfish Date 5/24/201
Revised
Paraclete Drive Project # 17-021
Designed By MWJ
Checked By
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282 '336-218-8010 Fax
Simple Method Volume Calculation
Area=
r DA -1 J
1
Rational C Values
Impervious Surface C =
095
Lawn/Landscaped Area C = 035
Other Areas C =
Rv =
005+09•la
Rv =
Runoff Coefficient
la =
Impervious Fraction
SF C
Composite Area
Impervious Surface
6480
095 6156
Lawn/Landscape Area
628
035 2198
Other Areas
0
055 0
TOTAL
7108
63758
0163177227 ac
0 146368228 ac
la = 0911648846
Rv = 0870483962
V= 3630'Rv'Rd'A 515.6166667 cf
Rd = Design Rain Strom 1 00 1n
A = Drainage Area 0 163177227 ac
RunoffVolume 515.6166667
triaddesigngroup
ARCHITECTURE I ENGINEERING IINTERIOR DESIGN
4807 - C Koger Boulevard, Greensboro, NC 27407 1 T- 336-218-8282 F - 336-218-8010 I www triad-deslgngroup corn

Protect Name DaVita Rockfish Date 2/28/201
Revised
Location Paraclete Drive Project # 17-021
Designed By MWJ
Checked By
Simple Method Volume Calculation
V= 3630'RVRd'A 413 2333333 cf
Rd = Design Rain Strom 1 00 in
A = Drainage Area 0 146189164 ac
Runoff Volume 413.2333333
triaddesigngroup
ARCHITECTURE S ENGINEERING I INTERIOR DESIGN
4807- C Koger Boulevard, Greensboro, NG27407 I T -336-21B-8282 F-3362188010 I www triad designgroup corn
4W
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282 '336-218-8010 Fax
Area =
l DA -2./
Rational C Values
Impervious Surface C =
095
Lawn/Landscaped Area C =
035
Other Areas C =
Rv =
005+09'la
Rv =
Runoff Coefficient
la =
Impervious Fraction
SF C
Composite Area
Impervious Surface
5156
095 48982
Lawn/Landscape Area
1212
035 4242
Other Areas
0
055 0
TOTAL
6368
53224
0146189164 ac
0 122185491 ac
la = 0809673367
Rv = 077870603
V= 3630'RVRd'A 413 2333333 cf
Rd = Design Rain Strom 1 00 in
A = Drainage Area 0 146189164 ac
Runoff Volume 413.2333333
triaddesigngroup
ARCHITECTURE S ENGINEERING I INTERIOR DESIGN
4807- C Koger Boulevard, Greensboro, NG27407 I T -336-21B-8282 F-3362188010 I www triad designgroup corn
4W
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282 '336-218-8010 Fax

C%oNTECH"
ENGINEERED SOLUTIONS
Fb N�
Design Engineer:
Date
Site Information
Project Name
Project State
Project Location
Drainage Area, Ad
Impervious Area, Ai
Pervious Area, Ap
% Impervious
Runoff Coefficient, Rv
Water Quality Volume Calculations
Design storm rainfall depth, Rd
Water quality volume, WQV
Storage Component Calculations
Capture 750/. of WQV
Pretreatment credit (estimated or calculated), %pre
Mass loading calculations
Mean Annual Rainfall, P
Agency required % removal
Percent Runoff Capture (% capture)
Mean Annual Runoff,Vt
Event Mean Concentration of Pollutant, EMC
Annual Mass Load, Mtotat
Filter System
Filtration brand
Cartridge height
Cartridge Quantity Calculation
Mass removed by pretreatment system, Mp.
Mass load to filters after pretreatment, Mp,.1
Estimate the required filter efficiency, Efilter
Mass to be captured by filters, Mfilt,,
Maximum Cartridge Flow rate, Or
Mass load per cartridge, Mca,t (Ibs)
Number of Cartridges required, Nmass
Maximum Treatment Capacity
SUMMARY
Determining Number of
Cartridges for Volume -Based
Design in NC
JDP
3/27/2017
Davita Rockfish N
North Carolina
Raeford
0.54 ac
0.50 ac
0.04
92%
0.88
Blue Cells = Input
Black Cells = Calculation
=0.05+0.9* (AVAd)
1.0 in
1735.31`0=Ad*Rv*Rd*(43560/12)
1301.5 fe =0.75*WQV
30%
46 in
85%
90%
71,842 It''=P*Ad*Rv*(43560/12)*%capture
70.0 mg/I (Typically 60 - Remdential/Office, 70 - Commamial, 100 - Industrial)
313.76 lbs =EMC*Vt*(28.3)*(0.000001)*(22046)
StormFilter
27 in
94 lbs
=Mtotal * %removal
220 lbs
=Mtotal - Mpre
79%
=1+(%removal - 1)/(1 - %pre)
173 lbs
=Mpassl * Efilter
7.5 gpm
=q * (7.5 ft2/cartddge)
54 lbs
=lookup mass load per cartridge
4
=ROUNDUP(Mfilter/Mcart,O)
0.07
=Nmass*(Qcart/449)
Maximum Treatment Flow Rate, cfs 0.07
Cartridge Flow Rate, gpm 7.:
Number of Cartridges
©2008 CONTECH Stormwater Solutions
contechstormwater.com
1of1

Name. DaVita Rockfish Date 2/28/201
Revised
Paraclete Drive Project # 17-021
Designed By MJ
Checked By
Simple Method Volume Calculation
Area
Rational C Values
Impervious Surface C =
095
Lawn/Landscaped Area C
= 035
Other Areas C =
Rv =
005+09'la
Rv =
Runoff Coefficient
la =
Impervious Fraction
SF C
Composite Area
Impervious Surface
14632
095 139004
Lawn/Landscape Area
484
035 1694
Other Areas
0
055 0
TOTAL
15116
140698
0 347015611 ac
0 322998163 ac
la = 0967980947
Rv = 0921182853
V= 3630•Rv'Rd'A 1160 383333 cf
Rd = Design Rain Strom 1 00 in
A = Drainage Area 0 347015611 ac
Runoff Volume 1160.383333
triaddesigngroup
ARCHITECTURE I ENGINEERING (INTERIOR DESIGN
4807 - C Koger Boulevard, Greensboro, NC 27407 1 T - 336.218 8282 F-336-218-8010 I www tread-destgngroup core
W
4W 1111-
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282'336-218-8010 Fax

Project Name
Location Par
Drive
DaVita Rockfish
Area =
-,
DA -4
Rational C Values
Impervious Surface C =
095
Lawn/Landscaped Area C
= 035
Other Areas C =
Rv =
005+09'la
Rv =
Runoff Coefficient
la =
Impervious Fraction
SF C
Impervious Surface
7198
Lawn/Landscape Area
1322
Other Areas
0
TOTAL
8520
0195592287 ac
la = 0844835681
Rv = 0810352113
Volume
V=
3630'Rv'Rd'A
Rd =
Design Rain Strom
A =
Drainage Area
Runoff Volume
Date 2/28/201
Revised
Project # 17-021
Designed By MWJ
Checked By
Method Volume Calculation
Composite Area
095 68381
035 4627
055 0
73008
0 167603306 ac
575 35 Gf
100 in
0.195592287 ac
575.35
triaddesigngroup
ARCHITECTURE I ENGINEERING IINTERIOR DESIGN
41107 - C Koger Boulevard, Greensboro, NC 27407 1 T - 336-218-8282 F - 336.218-8010 1 www triad-designgroup corn
W� >,
4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282 '336-218-8010 Fax

Protect Name DaVita Rockfish Date 2/18/2015
Revised ��
Location Paraclete Drive Project # 14-046
Designed By MWJ
Checked By
Drainage Area DA1, DA2, DA3 DA4 4807-C Koger Blvd
Greensboro, NC 27407
336-218-8282'336-218-8010 Fax
Underaroud Volumes
Drainage Areas
DA -1 WQV
DA -2 WQV
Design Volume WQV
75% Design Volume
24" Diamlater CMP Pipe
222 If
516
413
929 cf
696 75 cf Required
697 cf Provided
DA -3
WQV
1160
DA -4
WQV
575
Design Volume
WQV
1735 cf
75% Design Volume
WQv
1301 25 cf
48" Dlamlater CMP Pipe
134 If 1306 cf Provided
triaddesigngroup
ARCHITECTURE I ENGINEERING IINTERIOR DESIGN
4807 - C Koger Boulevard, Greensboro, NC 27407 1 T 336-218 8282 F-336-218-8010 I www brad-designgroulacorn

Hydraflow Table of Contents P\2017\DaVita-Rockfish17-021\-Civil\Calculations\DaVitaRockfish Contech gpw
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc. v11
Wednesday, 05/24/2017
WatershedModel Schematic..................................................................................... 1
Hydrograph Return Period Recap............................................................................. 2
1 - Year
SummaryReport......................................................................................................................... 3
HydrographReports...................................................................................................................
4
Hydrograph No. 1, SCS Runoff, DA -1
HydrographReports.................................................................................................................
Hydrograph No. 2, SCS Runoff, DA-2......................................................................................
5
Hydrograph No. 3, SCS Runoff, DA-3......................................................................................
6
Hydrograph No. 4, SCS Runoff, DA-4......................................................................................
7
Hydrograph No. 5, SCS Runoff, Area to South Dry Pond ........................................................
8
Hydrograph No. 6, SCS Runoff, Area to North Dry Pond ......................................................... 9
Hydrograph No. 7, SCS Runoff, Predevelopment..................................................................
10
Hydrograph No. 8, Combine, DA -3-4 Combined....................................................................
11
Hydrograph No. 9, Reservoir, Contech North UG..................................................................
12
Pond Report - Contech System.........................................................................................
13
Hydrograph No. 10, Diversion1, Flow From Chambers.........................................................
14
Hydrograph No. 11, Diversion2, Wier Flow............................................................................
15
Hydrograph No. 12, Combine, DA -1-2 Combined..................................................................
16
Hydrograph No. 13, Reservoir, Contech South UG...............................................................
17
PondReport - Contech South............................................................................................
18
Hydrograph No. 14, Diversion1, Flow From Chambers.........................................................
19
Hydrograph No. 15, Diversion2, Wier Flow.............................................................................
20
Hydrograph No. 16, Combine, Combined Flow To Dry Pond North .......................................
21
Hydrograph No. 17, Reservoir, <no description>...................................................................
22
PondReport - North Dry Pond...........................................................................................
23
Hydrograph No. 18, Combine, Routed Flow From Pond ........................................................
24
Hydrograph No. 19, Combine, Combined Flow To Dry Pond South ......................................
25
_ Hydrograph No. 20, Reservoir, Dry Pond South....................................................................
26
Pond Report - South Dry Pond..........................................................................................
27
Hydrograph No. 21, Combine, Routed Flow Leaving South Pond .........................................
28
Hydrograph No. 22, Combine, Total FLow Leaving Site ........................................................
29
2 - Year
SummaryReport.......................................................................................................................
30
HydrographReports.................................................................................................................
31
Hydrograph No. 1, SCS Runoff, DA-1....................................................................................
31
HydrographNo. 2, SCS Runoff, DA-2....................................................................................
32
HydrographNo. 3, SCS Runoff, DA-3....................................................................................
33
Hydrograph No. 4, SCS Runoff, DA-4....................................................................................
34
Hydrograph No. 5, SCS Runoff, Area to South Dry Pond ......................................................
35
Hydrograph No. 6, SCS Runoff, Area to North Dry Pond .......................................................
36
Hydrograph No. 7, SCS Runoff, Predevelopment..................................................................
37
Hydrograph No. 8, Combine, DA -3-4 Combined....................................................................
38
Hydrograph No. 9, Reservoir, Contech North UG..................................................................
39
Hydrograph No. 10, Diversion1, Flow From Chambers.........................................................
40
Hydrograph No. 11, Diversion2, Wier Flow............................................................................
41

Contents continued...
P \2017\DaVita - Rockfish 17-021\- Civd\Calculations\DaVita Rockfish Contech.gpw
Hydrograph No. 12, Combine, DA -1-2 Combined..................................................................
42
Hydrograph No. 13, Reservoir, Contech South UG...............................................................
43
Hydrograph No. 14, Diversion1, Flow From Chambers.........................................................
44
Hydrograph No. 15, Diversion2, Wler Flow............................................................................
45
Hydrograph No. 16, Combine, Combined Flow To Dry Pond North .......................................
46
Hydrograph No. 17, Reservoir, <no description>...................................................................
47
Hydrograph No. 18, Combine, Routed Flow From Pond ........................................................
48
Hydrograph No. 19, Combine, Combined Flow To Dry Pond South ......................................
49
Hydrograph No. 20, Reservoir, Dry Pond South....................................................................
50
Hydrograph No. 21, Combine, Routed Flow Leaving South Pond .........................................
51
Hydrograph No. 22, Combine, Total FLow Leaving Site ........................................................
52
10 - Year
SummaryReport.......................................................................................................................
53
Hydrograph Reports.................................................................................................................
54
Hydrograph No. 1, SCS Runoff, DA-1....................................................................................
54
Hydrograph No. 2, SCS Runoff, DA-2....................................................................................
55
Hydrograph No. 3, SCS Runoff, DA-3....................................................................................
56
Hydrograph No. 4, SCS Runoff, DA-4....................................................................................
57
Hydrograph No. 5, SCS Runoff, Area to South Dry Pond ......................................................
58
Hydrograph No. 6, SCS Runoff, Area to North Dry Pond .......................................................
59
Hydrograph No. 7, SCS Runoff, Predevelopment..................................................................
60
Hydrograph No. 8, Combine, DA -3-4 Combined....................................................................
61
Hydrograph No. 9, Reservoir, Contech North UG..................................................................
62
Hydrograph No. 10, Diversion1, Flow From Chambers.........................................................
63
Hydrograph No. 11, Diversion2, Wler Flow............................................................................
64
Hydrograph No. 12, Combine, DA -1-2 Combined..................................................................
65
Hydrograph No. 13, Reservoir, Contech South UG...............................................................
66
Hydrograph No. 14, Diversion1, Flow From Chambers.........................................................
67
Hydrograph No. 15, Diversion2, Wler Flow............................................................................
68
Hydrograph No. 16, Combine, Combined Flow To Dry Pond North .......................................
69
Hydrograph No. 17, Reservoir, <no description>...................................................................
70
Hydrograph No. 18, Combine, Routed Flow From Pond ........................................................
71
Hydrograph No. 19, Combine, Combined Flow To Dry Pond South ......................................
72
Hydrograph No. 20, Reservoir, Dry Pond South....................................................................
73
Hydrograph No. 21, Combine, Routed Flow Leaving South Pond .........................................
74
Hydrograph No. 22, Combine, Total FLow Leaving Site ........................................................
75
100 - Year
SummaryReport....................................................................................................................... 76
HydrographReports................................................................................................................. 77
Hydrograph No. 1, SCS Runoff, DA-1.................................................................................... 77
Hydrograph No. 2, SCS Runoff, DA-2.................................................................................... 78
Hydrograph No. 3, SCS Runoff, DA-3.................................................................................... 79
HydrographNo. 4, SCS Runoff, DA-4.................................................................................... 80
Hydrograph No. 5, SCS Runoff, Area to South Dry Pond ...................................................... 81
Hydrograph No. 6, SCS Runoff, Area to North Dry Pond ....................................................... 82
Hydrograph No. 7, SCS Runoff, Predevelopment.................................................................. 83
Hydrograph No. 8, Combine, DA -3-4 Combined.................................................................... 84
Hydrograph No. 9, Reservoir, Contech North UG.................................................................. 85

Contents continued...
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
Hydrograph
No
No
No
No
No
No
No
No
No
No
No
No
P \2017\DaVita - Rockfish 17-021\- CMACalculations\DaVita Rockfish Contech gpw
10, Diversion1, Flow From Chambers.........................................................
11, Diversion2, Wier Flow............................................................................
12, Combine, DA -1-2 Combined..................................................................
13, Reservoir, Contech South UG...............................................................
14, Diversion1, Flow From Chambers.........................................................
15, Diversion2, Wier Flow............................................................................
16, Combine, Combined Flow To Dry Pond North .......................................
17, Reservoir, <no description>...................................................................
18, Combine, Routed Flow From Pond ........................................................
19, Combine,
20, Reservoir,
21, Combine,
No. 22, Combine,
Combined Flow To Dry Pond South ......................................
DryPond South....................................................................
Routed Flow Leaving South Pond .........................................
Total FLow Leaving Site ........................................................
86
87
88
89
90
91
92
93
94
95
96
97
98
OFReport.................................................................................................................. 99

Watershed Model Schematic
OV
22
Legend
Hvd• Origin Descriation
1
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
1
SCS Runoff
DA -1
2
SCS Runoff
DA -2
3
SCS Runoff
DA -3
4
SCS Runoff
DA -4
5
SCS Runoff
Area to South Dry Pond
6
SCS Runoff
Area to North Dry Pond
7
SCS Runoff
Predevelopment
8
Combine
DA -3-4 Combined
9
Reservoir
Contech North UG
10
Diversionl
Flow From Chambers
11
Diversion2
Wier Flow
12
Combine
DA -1-2 Combined
13
Reservoir
Contech South UG
14
Diversion1
Flow From Chambers
15
Diversion2
Wier Flow
16
Combine
Combined Flow To Dry Pond North
17
Reservoir
<no description>
18
Combine
Routed Flow From Pond
19
Combine
Combined Flow To Dry Pond South
20
Reservoir
Dry Pond South
21
Combine
Routed Flow Leaving South Pond
22
Combine
Total FLow Leaving Site
Project: P:\2017\DaVita - Rockfish 17-021\- Civil\Calculations\DaVita Rockfish Contech
9
ednesday, 05 / 24 / 2017

Hydrograph Return Period Re Hydr~rhflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd.
Hydrograph
Inflow
Peak Outflow (cfs)
Hydrograph
No.
type
hyd(s)
Description
(origin)
1 -yr
2 -yr
3 -yr
5 -yr
10 -yr
25 -yr
50 -yr
100 -yr
1
SCS Runoff
------
0 657
0 816
-------
-------
1 247
-------
-------
1 935
DA -1
2
SCS Runoff
------
0 559
0.720
-------
-------
1 161
-------
-------
1 864
DA -2
3
SCS Runoff
------
1 537
1.876
-------
-------
2 802
-------
-------
4 288
DA -3
4
SCS Runoff
------
0 775
0 975
-------
-------
1 521
-------
-------
2 389
DA -4
5
SCS Runoff
------
0 095
0 192
-------
-------
0 542
-------
-------
1 227
Area to South Dry Pond
6
SCS Runoff
------
0 089
0 182
-------
-------
0 512
-------
-------
1 159
Area to North Dry Pond
7
SCS Runoff
------
0 642
1 304
-------
-------
3 674
-------
-------
8 317
Predevelopment
8
Combine
3, 4,
2 312
2 851
-------
-------
4 323
-------
-------
6 676
DA -3-4 Combined
9
Reservoir
8
2 211
2 829
-------
-------
4 293
-------
-------
6 631
Contech North UG
10
Diversion1
9
0 072
0 073
-------
-------
0 077
-------
-------
0 077
Flow From Chambers
11
Diversion2
9
2 138
2 756
-------
4.216
-------
-------
6 555
Wier Flow
12
Combine
1, 2,
1 216
1 536
-------
-------
2 409
-------
-------
3 799
DA -1-2 Combined
13
Reservoir
12
1 210
1 528
-------
-------
2 396
-------
-------
3 780
Contech South UG
14
Diversion1
13
0 019
0 019
-------
-------
0 020
-------
-------
0 020
Flow From Chambers
15
Diversion2
13
1 192
1 510
-------
-------
2 376
-------
-------
3 760
Wier Flow
16
Combine
6, 11,
2 227
2 938
-------
-------
4 728
-------
-------
7 713
Combined Flow To Dry Pond North
17
Reservoir
16
0 302
0 408
-------
-------
1 581
-------
-------
6 269
<no description>
18
Combine
10,17
0 372
0 479
-------
-------
1 653
-------
-------
6 346
Routed Flow From Pond
19
Combine
5, 15,
1 282
1 702
-------
-------
2 918
-------
-------
4 981
Combined Flow To Dry Pond South
20
Reservoir
19
0.208
0 291
-------
-------
0 437
-------
-------
0 733
Dry Pond South
21
Combine
14,20
0 227
0 310
-------
-------
0 455
-------
-------
0 752
Routed Flow Leaving South Pond
22
Combine
18,21
0 599
0 789
-------
-------
2 105
-------
-------
6 909
Total FLow Leaving Site
Proj. file: P-\2017\DaVita - Rockfish 17-021\- CivikCalculations\DaVita Rockfish
�CWdddesj#ay, 05 / 24 / 2017

Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2016 by Autodesk, Inc v11
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cult)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
0 657
1
717
1,431
------
------
------
DA -1
2
SCS Runoff
0 559
1
717
1,160
------
------
------
DA -2
3
SCS Runoff
1 537
1
717
3,535
------
------
------
DA -3
4
SCS Runoff
0 775
1
717
1,646
------
------
------
DA -4
5
SCS Runoff
0 095
1
719
256
------
------
------
Area to South Dry Pond
6
SCS Runoff
0 089
1
719
242
------
------
------
Area to North Dry Pond
7
SCS Runoff
0 642
1
719
1,737
------
------
------
Predevelopment
8
Combine
2 312
1
717
5,181
3, 4,
------
------
DA -3-4 Combined
9
Reservoir
2 211
1
719
5,176
8
24587
1,710
Contech North UG
10
Diversionl
0 072
1
716
3,790
9
------
------
Flow From Chambers
11
Diversion2
2.138
1
719
1,386
9
-----
------
Wier Flow
12
Combine
1 216
1
717
2,590
1, 2,
------
------
DA -1-2 Combined
13
Reservoir
1 210
1
718
2,584
12
24620
631
Contech South UG
14
Diversionl
0 019
1
712
1,364
13
------
------
Flow From Chambers
15
Diversion2
1.192
1
718
1,220
13
------
------
Wier Flow
16
Combine
2 227
1
719
1,628
6, 11,
------
------
Combined Flow To Dry Pond North
17
Reservoir
0.302
1
730
1,641
16
24468
900
<no description>
18
Combine
0 372
1
729
5,431
10,17
------
------
Routed Flow From Pond
19
Combine
1.282
1
718
1,477
5, 15,
------
------
Combined Flow To Dry Pond South
20
Reservoir
0208
1
729
1,486
19
24541
712
Dry Pond South
21
Combine
0 227
1
729
2,851
14,20
------
------
Routed Flow Leaving South Pond
22
Combine
0 599
1
729
8,282
18,21
------
------
Total FLow Leaving Site
P:\2017\DaVita - Rockfish 17-021\- Civil\Cal
u[gfi ursl\®aVild:RloYbfish Contech.
Wednesday, 05 / 24 / 2017

4
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 1
DA -1
Hydrograph type
= SCS Runoff
Peak discharge
= 0.657 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 1,431 cuft
Drainage area
= 0.160 ac
Curve number
= 94*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.04 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(0 150 x 98) + (0 010 x 39)] / 0 160
Q (cfs)
DA -1
Hyd. No. 1 -- 1 Year
Q (cfs)
0.0 20
Hyd No. 1
40 6.0 8.0 10.0 12.0 14.0 16.0 18.0
20.0
Time (hrs)
0.80
0.60
0.50
0.40
0.30
k
0.20
0.0 20
Hyd No. 1
40 6.0 8.0 10.0 12.0 14.0 16.0 18.0
20.0
Time (hrs)

5
Hydr®graph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
1.00
Wednesday, 05 / 24 / 2017
Hyd. No. 2
DA -2
Hydrograph type
= SCS Runoff
Peak discharge
= 0.559 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 1,160 cuft
Drainage area
= 0.160 ac
Curve number
= 89*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.04 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Composite (Area/CN) = [(0 120 x 98) + (0 040 x 61)] / 0 160
DA -2
Q (cfs) Hyd. No. 2 -- 1 Year Q (cfs)
1.00
1.00
0.90
090
__
�...�
.._...__._.
.... � �
.....�
.__.._.�...
....._.__._
�
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
040
0.40
0.30
0.30
0.20
0.20
0.10
0.10
000 � � 0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Hyd No. 2 Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 3
DA -3
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 0.350 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 3.04 in
Storm duration
= 24 hrs
* Composite (Area/CN) = [(0 340 x 98) + (0 010 x 61)] / 0 350
Q (cfs
2.00
1.00
rTiTil
0.0 2.0
Hyd No. 3
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
DA -3
Hyd. No. 3 -- 1 Year
I
Wednesday, 05 / 24 / 2017
= 1.537 cfs
= 11.95 hrs
= 3,535 tuft
= 97*
= 0 ft
= 5.00 min
= Type II
= 484
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
2.00
1.00
20.0
Time (hrs)

7
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 4
DA -4
Hydrograph type
= SCS Runoff
Peak discharge
= 0.775 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 1,646 cuft
Drainage area
= 0.200 ac
Curve number
= 92*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.04 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Composite (Area/CN) = [(0 170 x 98) + (0 030 x 61)] / 0 200
Q (cfs)
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
010
000
0.0 2.0 4.0 6.0
Hyd No. 4
DA -4
Hyd. No 4 -- 1 Year Q (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 5
Area to South Dry Pond
Hydrograph type
= SCS Runoff
Peak discharge
= 0.095 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.98 hrs
Time interval
= 1 min
Hyd. volume
= 256 cuft
Drainage area
= 0.180 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.04 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
0.10
009
0.08
0.07 _.�...__ .,.._
006
0.05
0.04
0.03
0.02
0.01
0 00
®1
no
0 2 4 6 8
Hyd No. 5
Area to South Dry Pond
Hyd. No. 5 -- 1 Year Q (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 6
Time to peak
Area to North Dry Pond
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 0.170 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 3.04 in
Storm duration
= 24 hrs
9
Wednesday, 05 / 24 / 2017
Peak discharge
= 0.089 cfs
Time to peak
= 11.98 hrs
Hyd. volume
= 242 cuft
Curve number
= 61
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to North Dry Pond
Q (cfs) Hyd No. 6 -- 1 Year Q (cfs)
0.10
009
0.08
0.07
0.06
005
0.04
0.03
0.02
0.01
000
0.10
0.09
0.08
0.07
006
0.05
0.04
0.03
0.02
0.01
000
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Hyd No. 6 Time (hrs)

10
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 7
Predevelopment
Hydrograph type
= SCS Runoff
Peak discharge
= 0.642 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.98 hrs
Time interval
= 1 min
Hyd. volume
= 1,737 cuft
Drainage area
= 1.220 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 6.60 min
Total precip.
= 3.04 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Predevelopment
Q (cfs) Hyd. No. 7 -- 1 Year Q (cfs)
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
000
0 2 4
Hyd No. 7
Is
OM
1.00
0.90
0.80
0.70
060
0.50
0.40
0.30
0.20
0.10
0.00
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 8
DA -3-4 Combined
Hydrograph type
= Combine
Peak discharge
= 2.312 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 5,181 cuft
Inflow hyds.
= 3, 4
Contrib. drain. area
= 0.550 ac
Q (cfs
3.00
2.00
1.00
rOViT.1
DA -3-4 Combined
Hyd. No. 8 -- 1 Year
0.0 2.0 4.0 6.0 8.0 10.0 12.0
Hyd No. 8 Hyd No. 3 Hyd No. 4
14.0 16.0 180
Q (cfs)
3.00
2.00
1.00
20.0
Time (hrs)

12
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 9
Contech North UG
Hydrograph type
= Reservoir
Peak discharge
= 2.211 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.98 hrs
Time interval
= 1 min
Hyd. volume
= 5,176 cuft
Inflow hyd. No.
= 8 - DA -3-4 Combined
Max. Elevation
= 245.87 ft
Reservoir name
= Contech System
Max. Storage
= 1,710 cuft
Storage Indication method used
Q (cfs
3.00
2.00
1.00
r.TIrI
Contech North UG
Hyd. No. 9 -- 1 Year
_..._ .- �. m_
0 3 6 9 12 15 18 21 24 27
Hyd No. 9 Hyd No. 8 ` _ � Total storage used = 1,710 cuft
Q (cfs)
3.00
2.00
1.00
30
Time (hrs)

Pond Report 13
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Pond No. 7 - Contech System
000
000
Crest Len (ft)
Pond Data
000
000
000
UG Chambers -Invert elev = 242 65 ft, Rise x Span = 4 00 x 4 00 ft, Barrel Len = 42 00 ft,
No Barrels = 3, Slope = 0 00%, Headers = Yes
Stage / Storage Table
000
000
Crest EI. (ft)
Stage (ft) Elevation (ft)
Contour area (sgft)
Incr. Storage (cuft)
Total storage (cuft)
000 24265
n/a
0
0
040 24305
n/a
103
103
080 24345
n/a
180
283
1.20 243.85
n/a
218
501
1 60 24425
n/a
241
742
200 24465
n/a
251
993
240 24505
n/a
251
1,244
280 24545
n/a
240
1,485
320 24585
n/a
218
1,703
360 24625
n/a
179
1,883
400 24665
n/a
103
1,986
[A] [B] [C] [PrfRsr] [A] [B] [C] [D]
Rise (in)
= 800
1.25
000
000
Crest Len (ft)
= 4 00
000
000
000
Span (in)
= 800
1 25
000
000
Crest EI. (ft)
= 24557
000
000
000
No. Barrels
= 1
1
0
0
Weir Coeff.
= 333
333
333
333
Invert EI. (ft)
= 24265
24265
000
000
Weir Type
= Ciplti
---
---
---
Length (ft)
= 2400
000
000
000
Multi -Stage
= No
No
No
No
Slope (%)
= 1 00
000
0.00
n/a
N -Value
= 013
013
013
n/a
Orifice Coeff.
= 060
060
060
0.60
Exfil.(in/hr)
= 0 000 (by
Wet area)
Multi -Stage
= n/a
Yes
No
No
TW Elev. (ft)
= 000
Note Culvert/Orifice outflows are analyzed under inlet (to) and outlet (cc) control Weir risers checked for orifice conditions (ic) and submergence (s)
Stage (ft) Stage / Discharge Elev (ft)
5 00
400
300
200
1 00
0 00
247 65
24665
245.65
24465
24365
24265
000 200 400 600 800 1000 1200 1400 1600
Total Q Discharge (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 10
Flow From Chambers
Hydrograph type = Diversion1
Storm frequency = 1 yrs
Time interval = 1 min
Inflow hydrograph = 9 - Contech North UG
Diversion method = Pond - Contech System
Peak discharge
Time to peak
Hyd. volume
2nd diverted hyd
Pond structure
Flow From Chambers
14
Wednesday, 05 / 24 / 2017
= 0.072 cfs
= 11.93 hrs
= 3,790 tuft
=11
= Culy/Orf A
Q (cfs) Hyd No. 10 -- 1 Year Q (cfs)
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 10 -- Pond outlet Hyd No. 9 -- Inflow Hyd No. 11 -- 9 minus 10

15
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@) Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 11
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 2.138 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.98 hrs
Time interval
= 1 min
Hyd. volume
= 1,386 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 10
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Q (cfs)
3.00
2.00
1.00
FAMTil
Wler Flow
Hyd. No. 11 -- 1 Year
0 3 6 9 12 15 18 21 24 27
Hyd No. 11 -- Qin - Pond outlet ® Hyd No. 9 -- Inflow Hyd No. 10
Q (cfs)
3.00
2.00
1 00
30
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 12
DA -1-2 Combined
Hydrograph type = Combine
Storm frequency = 1 yrs
Time interval = 1 min
Inflow hyds. = 1, 2
Q (cfs
2.00
1 00
'dAT1l
16
Wednesday, 05 / 24 / 2017
Peak discharge
= 1.216 cfs
Time to peak
= 11.95 hrs
Hyd. volume
= 2,590 cuft
Contrib. drain. area
= 0.320 ac
DA -1-2 Combined
Hyd. No. 12 -- 1 Year
Q (cfs)
2.00
1.00
e
0.0 2.0 4.0 60 8.0 10.0 12.0 14.0
Hyd No. 12 ® Hyd No. 1 Hyd No. 2
16.0 18.0 20.0
22.0 - Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc. v11
Hyd. No. 13
Contech South UG
Hydrograph type = Reservoir
Storm frequency = 1 yrs
Time interval = 1 min
Inflow hyd. No. = 12 - DA -1-2 Combined
Reservoir name = Contech South
Storage Indication method used.
Q (cfs)
2.00
1.00
e
3
Hyd No. 13
Peak discharge
Time to peak
Hyd. volume
Max. Elevation
Max. Storage
Contech South UG
Hyd. No. 13 -- 1 Year
6 9 12
- Hyd No. 12
17
Wednesday, 05 / 24 / 2017
= 1.210 cfs
= 11.97 hrs
= 2,584 tuft
= 246.20 ft
= 631 tuft
15 18 21 24 27
_- __j Total storage used = 631 cuft
Q (cfs)
2.00
1.00
Had- 0.00
30
Time (hrs)

Pond Report 18
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Pond No. 9 - Contech South
Weir Structures
Pond Data
[A]
UG Chambers -Invert elev = 244 55 ft,
Rise x Span = 2 00 x 2 00 ft, Barrel Len = 109 00 ft, No Barrels = 2, Slope = 0 00%, Headers = Yes
Stage / Storage Table
[A]
[B]
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
000 24455
n/a
0
0
020 244.75
n/a
37
37
040 244.95
n/a
65
102
060 24515
n/a
79
181
080 24535
n/a
87
268
1 00 24555
n/a
91
358
1 20 24575
n/a
91
449
140 24595
n/a
87
536
1 60 24615
n/a
79
614
1 80 24635
n/a
65
679
200 24655
n/a
37
716
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A]
[B]
[C]
[D]
Rise (in)
= 800
075
000
0.00
Crest Len (ft)
= 400
000
000
000
Span (in)
= 800
075
000
000
Crest EI. (ft)
= 24600
000
000
000
No. Barrels
= 1
1
0
0
Weir Coeff.
= 333
333
333
333
Invert El. (ft)
= 24455
24455
0.00
000
Weir Type
= Clpltl
---
---
---
Length (ft)
= 34.00
000
000
000
Multi -Stage
= No
No
No
No
Slope (%)
= 1 00
000
000
n/a
N -Value
= 013
013
013
n/a
Orifice Coeff.
= 060
060
0.60
060
Exfil.(in/hr)
= 0 000 (by
Wet area)
Multi -Stage
= n/a
Yes
No
No
TW Elev. (ft)
= 000
Note Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control Weir risers checked for orifice conditions (ic) and submergence (s)
Stage (ft) Stage / Discharge Elev (ft)
300
1 00
000 ' '
000 1 00
Total Q
247 55
24655
24555
' I I 1' 24455
200 300 400 500 600
Discharge (cfs)

Hydrograph
Report
19
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 14
Flow From Chambers
Hydrograph type
= Diversion1
Peak discharge
= 0.019 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.87 hrs
Time interval
= 1 min
Hyd. volume
= 1,364 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 15
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Q (cfs
2.00
1.00
Flow From Chambers
Hyd. No. 14 -- 1 Year
0.00
0 3 6 9
Hyd No. 14 -- Pond outlet
Q (cfs)
2.00
1.00
ffWITH
12 15 18 21 24 27 30
Time (hrs)
Hyd No. 13 -- Inflow Hyd No. 15 -- 13 minus 14

Hydrograph
Report
20
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 15
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 1.192 cfs
Storm frequency
= 1 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 1,220 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 14
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Q (cfs)
2.00
1.00
Wier Flow
Hyd. No. 15 -- 1 Year
0.00
0 3 6 9 12 15 18 21 24 27
Hyd No. 15 -- Qin - Pond outlet Hyd No. 13 -- Inflow Hyd No. 14
Q (cfs)
2.00
1.00
Mmd- 0.00
30
Time (hrs)

Hydrograph Report
21
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 16
Combined Flow To Dry Pond North
Hydrograph type = Combine
Peak discharge
= 2.227 cfs
Storm frequency = 1 yrs
Time to peak
= 11.98 hrs
Time interval = 1 min
Hyd. volume
= 1,628 cuft
Inflow hyds. = 6, 11
Contrib. drain. area
= 0.170 ac
Combined Flow To Dry Pond North
Q (cfs) Hyd. No. 16 -- 1 Year Q (cfs)
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 120 13.0 14.0
Time (hrs)
Hyd No. 16 Hyd No. 6 Hyd No. 11

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Hyd. No. 17
<no description>
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 1 yrs
Time to peak
Time interval
= 1 min
Hyd. volume
Inflow hyd. No.
= 16 - Combined Flow To Dry PcIVIdAiEftyation
Reservoir name
= North Dry Pond
Max. Storage
Storage Indication method used.
Q (cfs)
3.00
2.00
1.00
<no description>
Hyd. No. 17 -- 1 Year
22
Wednesday, 05 / 24 / 2017
= 0.302 cfs
= 12.17 hrs
= 1,641 cuft
= 244.68 ft
= 900 cuft
0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Hyd No. 17 Hyd No. 16 t__..__ __ 1 Total storage used = 900 cult
Q (cfs)
3.00
2.00
1.00
- 0.00
20.0
Time (hrs)

Stage (ft)
300
200
1.00
0 00
Note Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (or) control Weir risers checked for orifice conditions (ic) and submergence (s)
Stage / Discharge
000 1 00 200 3.00 400 500 600 700
Total Q
Elev (ft)
24700
24600
245.00
1 24400
800
Discharge (cfs)
23
Pond Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Pond No. 8 - North Dry Pond
Pond Data
Contours -User-defined contour areas
Conic method used for volume calculation Begining Elevation = 244 00 ft
Stage / Storage Table
Stage (ft) Elevation (ft)
Contour area (sgft)
Incr. Storage (cuft)
Total storage (cuft)
000 24400
912
0
0
1 00 24500
1,764
1,315
1,315
200 24600
2,640
2,187
3,502
300 24700
3,040
2,837
6,339
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A] [B]
[C] [D]
Rise (in) = 1200
400
0.00
000
Crest Len (ft)
= 471 000
0.00 000
Span (in) = 1200
400
000
000
Crest EI. (ft)
= 24575 000
000 000
No. Barrels = 1
1
0
0
Weir Coeff.
= 333 3.33
333 333
Invert EI. (ft) = 24225
24400 000
0.00
Weir Type
= 1 ---
--- ---
Length (ft) = 10.00
000
000
000
Multi -Stage
= Yes No
No No
Slope (%) = 1 00
000
000
n/a
N -Value = 013
013
013
n/a
Orifice Coeff. = 060
060
060
060
Exfil.(in/hr)
= 0 000 (by Wet area)
Multi -Stage = n/a
Yes
No
No
TW Elev. (ft)
= 000
Stage (ft)
300
200
1.00
0 00
Note Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (or) control Weir risers checked for orifice conditions (ic) and submergence (s)
Stage / Discharge
000 1 00 200 3.00 400 500 600 700
Total Q
Elev (ft)
24700
24600
245.00
1 24400
800
Discharge (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 18
Routed Flow From Pond
Hydrograph type = Combine
Storm frequency = 1 yrs
Time interval = 1 min
Inflow hyds. = 10, 17
Q (cfs)
24
Wednesday, 05 / 24 / 2017
Peak discharge
= 0.372 cfs
Time to peak
= 12.15 hrs
Hyd. volume
= 5,431 cuft
Contrib. drain. area
= 0.000 ac
Routed Flow From Pond
Hyd. No. 18 -- 1 Year
Q (cfs)
0 3
Hyd No. 18
6 9 12
Hyd No. 10
15 18
Hyd No. 17
21 24 27
30
Time (hrs)
1
0 3
Hyd No. 18
6 9 12
Hyd No. 10
15 18
Hyd No. 17
21 24 27
30
Time (hrs)

Hydrograph Report
25
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 19
Combined Flow To Dry Pond South
Hydrograph type = Combine
Peak discharge
= 1.282 cfs
Storm frequency = 1 yrs
Time to peak
= 11.97 hrs
Time interval = 1 min
Hyd. volume
= 1,477 cuft
Inflow hyds. = 5, 15
Contrib. drain. area
= 0.180 ac
Q (cfs
200
1.00
Combined Flow To Dry Pond South
Hyd. No. 19 -- 1 Year
4.0 6.0
® Hyd No. 5
8.0 100
- Hyd No. 15
12.0
14.0
Q (cfs)
2.00
1.00
16.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Hyd. No. 20
Dry Pond South
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 1 yrs
Time to peak
Time interval
= 1 min
Hyd. volume
Inflow hyd. No.
= 19 - Combined Flow To Dry PcMd)S(EJdvation
Reservoir name
= South Dry Pond
Max. Storage
Storage Indication method used.
Q (cfs)
2.00
1.00
0.00
0 2 4
Hyd No. 20
Dry Pond South
Hyd. No. 20 -- 1 Year
26
Wednesday, 05 / 24 / 2017
= 0.208 cfs
= 12.15 hrs
= 1,486 tuft
= 245.41 ft
= 712 cuft
6 8 10 12 14 16 18 20 22 24
Hyd No. 19 L=--] Total storage used = 712 cuft
Q (cfs)
2.00
1.00
0.00
26
Time (hrs)

Pond Report
27
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Pond No. 10 - South Dry Pond
Pond Data
Contours -User-defined contour areas
Conic method used for volume
calculation Beglning
Elevation = 245 00 ft
Stage / Storage Table
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
000 24500
1,124
0
0
1 00 24600
2,400
1,722
1,722
200 24700
2,884
2,638
4,360
250 24750
4,568
1,847
6,207
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A] [B]
[C] [D]
Rise (in) = 1200
400
000
000
Crest Len (ft)
= 628 000
000 000
Span (in) = 1200
400
000
000
Crest EI. (ft)
= 24700 000
000 000
No. Barrels = 1
1
0
0
Weir Coeff.
= 333 333
333 333
Invert El. (ft) = 24430
24500 000
000
Weir Type
= 1 ---
--- ---
Length (ft) = 2400
000
000
000
Multi -Stage
= Yes No
No No
Slope (%) = 1 00
000
000
n/a
N -Value = 013
013
013
n/a
Orifice Coeff. = 060
060
060
060
Exfil.(in/hr)
= 0 000 (by Wet area)
Multi -Stage = n/a
Yes
No
No
TW Elev. (ft)
= 000
Note Culvert/Orifice outflows are analyzed under Inlet (Ic) and outlet (oc) control Weir risers checked for orifice conditions (Ic) and submergence (s)
Stage (ft) Stage / Discharge Elev (ft)
300
200
1 00
248.00
24700
24600
0 00 I ' ' ' ' ' 245 00
000 1 00 2.00 300 400 500 600
Total Q Discharge (cfs)

28
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@) Civil 3DO 2016 by Autodesk, Inc. v11
0.50
Wednesday, 05 / 24 / 2017
Hyd. No. 21
Routed Flow Leaving South Pond
Hydrograph type = Combine
Peak discharge
= 0.227 cfs
Storm frequency = 1 yrs
Time to peak
= 12.15 hrs
Time interval = 1 min
Hyd. volume
= 2,851 cuft
Inflow hyds. = 14, 20
Contrib. drain. area
= 0.000 ac
Routed Flow Leaving South Pond
Q (cfs) Hyd. No. 21 -- 1 Year Q (cfs)
0.50
0.50
�
0.45
0.45
`W'
_._..�
.......__...
_�.�..�..
0.40
0.40
0.35
035
�.
0.30
0.30
025
0.25
_.
0.20
0.20
0.15
0.15
0.10
0.10
�
�
�
0.05
0.05
0.00 0.00
0 4 8 12 16 20 24 28 32 36 40
Time (hrs)
Hyd No. 21 Hyd No. 14 Hyd No. 20

29
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 22
Total FLow Leaving Site
Hydrograph type
= Combine
Peak discharge
= 0.599 cfs
Storm frequency
= 1 yrs
Time to peak
= 12.15 hrs
Time interval
= 1 min
Hyd. volume
= 8,282 cuft
Inflow hyds.
= 18, 21
Contrib. drain. area
= 0.000 ac
Total FLow Leaving Site
Q (cfs) Hyd. No. 22 -- 1 Year Q (cfs)
1.00 1.00
0.90 0.90
0.80 � � � 0.80
0.70 0.70
0.60 0.60
0.50 0.50
040 .��. .......�,.�.,. N.,�....___� __._ 0.40
0.30 �. 0.30
0.20 0.20
0.10 0.10
0.00 0.00
0 4 8 12 16 20 24 28 32 36
Time (hrs)
Hyd No. 22 Hyd No. 18 Hyd No. 21

30
Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cult)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cult)
Hydrograph
Description
1
SCS Runoff
0 816
1
717
1,804
------
------
------
DA -1
2
SCS Runoff
0 720
1
717
1,512
------
------
------
DA -2
3
SCS Runoff
1 876
1
717
4,367
------
------
------
DA -3
4
SCS Runoff
0 975
1
717
2,103
------
------
------
DA -4
5
SCS Runoff
0.192
1
718
442
------
------
------
Area to South Dry Pond
6
SCS Runoff
0 182
1
718
417
------
------
------
Area to North Dry Pond
7
SCS Runoff
1 304
1
718
2,994
------
------
------
Predevelopment
8
Combine
2 851
1
717
6,471
3, 4,
------
------
DA -3-4 Combined
9
Reservoir
2 829
1
718
6,465
8
245 92
1,734
Contech North UG
10
Diversionl
0 073
1
718
4,166
9
------
------
Flow From Chambers
11
Diversion2
2 756
1
718
2,300
9
------
------
Wier Flow
12
Combine
1 536
1
717
3,315
1, 2,
------
------
DA -1-2 Combined
13
Reservoir
1 528
1
718
3,309
12
24623
642
Contech South UG
14
Diversionl
0 019
1
718
1,459
13
------
------
Flow From Chambers
15
Diversion2
1510
1
718
1,851
13
------
------
Wier Flow
16
Combine
2 938
1
718
2,717
6, 11,
------
------
Combined Flow To Dry Pond North
17
Reservoir
0 408
1
729
2,733
16
24511
1,558
<no description>
18
Combine
0 479
1
727
6,899
10,17
------
------
Routed Flow From Pond
19
Combine
1 702
1
718
2,293
5, 15,
------
------
Combined Flow To Dry Pond South
20
Reservoir
0 291
1
728
2,303
19
24565
1,115
Dry Pond South
21
Combine
0 310
1
728
3,762
14,20
------
------
Routed Flow Leaving South Pond
22
Combine
0 789
1
728
10,660
18,21
------
------
Total FLow Leaving Site
P:\2017\DaVita - Rockfish 17-021\- Civil\Cal
uFAfihrri\1E?aVdd:F3b'dbfjsh Contech.
Wednesday, 05 / 24 / 2017

Hydr®graph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 1
Time to peak
DA -1
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 2 yrs
Time interval
= 1 min
Drainage area
= 0.160 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 3.68 in
Storm duration
= 24 hrs
* Composite (Area/CN) = [(0 150 x 98) + (0 010 x 39)] / 0 160
Q (cfs)
31
Wednesday, 05 / 24 / 2017
Peak discharge
= 0.816 cfs
Time to peak
= 11.95 hrs
Hyd. volume
= 1,804 cuft
Curve number
= 94*
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
DA -1
Hyd No. 1 -- 2 Year
Q (cfs)
1 00
1.00
- �
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
'
0.50
050
0.40
040
_
_.�. �W
�
�
0.30
0.30
0.20
0.20
0.10
0.10
00 2.0
Hyd No. 1
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
20.0
Time (hrs)

32
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 2
OEM
Hydrograph type
= SCS Runoff
Peak discharge
= 0.720 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 1,512 cuft
Drainage area
= 0.160 ac
Curve number
= 89*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.68 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(0 120 x 98) + (0 040 x 61)] / 0 160
Q (cfs)
Deo -2
Hyd. No. 2 -- 2 Year Q (cfs)
0.0 2.0 4.0
Hyd No. 2
6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Time (hrs)
I
0.0 2.0 4.0
Hyd No. 2
6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Hyd. No. 3
DA -3
Hydrograph type
= SCS Runoff
Storm frequency
= 2 yrs
Time interval
= 1 min
Drainage area
= 0.350 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 3.68 in
Storm duration
= 24 hrs
Composite (Area/CN) _ [(0 340 x 98) + (0.010 x 61)] / 0 350
Q (cfs)
2.00
1.00
0.00 '
0.0 2.0
Hyd No. 3
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
DA -3
Hyd. No. 3 -- 2 Year
33
Wednesday, 05 / 24 / 2017
= 1.876 cfs
= 11.95 hrs
= 4,367 cuft
= 97*
= 0 ft
= 5.00 min
= Type II
= 484
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
2.00
1.00
— 0.00
20.0
Time (hrs)

34
Hydr®graph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 4
DA -4
Hydrograph type
= SCS Runoff
Peak discharge
= 0.975 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 2,103 cuft
Drainage area
= 0.200 ac
Curve number
= 92*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.68 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(0 170 x 98) + (0 030 x 61)] / 0 200
Q (cfs)
DA -4
Hyd. No. 4 -- 2 Year
Q (cfs)
0.0 2.0
Hyd No. 4
40 6.0 8.0 10.0 12.0 14.0 160 18.0
20.0
Time (hrs)
f.
1�
mom
now=
0.0 2.0
Hyd No. 4
40 6.0 8.0 10.0 12.0 14.0 160 18.0
20.0
Time (hrs)

35
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 5
Area to South Dry Pond
Hydrograph type
= SCS Runoff
Peak discharge
= 0.192 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 442 cuft
Drainage area
= 0.180 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.68 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
0.50
0.45
0.40
0.35 _._.....
0.30
025
0.20
015
0.10
0.05
0 00
0 2 4
Hyd No. 5
Area to South Dry Pond
Hyd. No. 5 -- 2 Year Q (cfs)

36
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 6
Area to North Dry Pond
Hydrograph type
= SCS Runoff
Peak discharge
= 0.182 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 417 cuft
Drainage area
= 0.170 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.68 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
0.50
0.45
0.40
0.35 ..x__......
0.30
0.25 ._.�
020
0.15
0.10
0.05
n nn
0 2 4
Hyd No. 6
Area to North Dry Pond
Hyd No 6 -- 2 Year Q (cfs)

37
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 7
Predevelopment
Hydrograph type
= SCS Runoff
Peak discharge
= 1.304 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 2,994 cuft
Drainage area
= 1.220 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 6.60 min
Total precip.
= 3.68 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
200
1.00
000 '
0 2 4
Hyd No. 7
Predevelopment
Hyd. No. 7 -- 2 Year
Q (cfs)
2.00
1.00
A .1 1 1 1 0.00
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)

38
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 8
DA -3-4 Combined
Hydrograph type
= Combine
Peak discharge
= 2.851 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 6,471 cuft
Inflow hyds.
= 3, 4
Contrib. drain. area
= 0.550 ac
Q (cfs)
3.00
2.00
1.00
DA -3-4 Combined
Hyd. No. 8 -- 2 Year
0.00 '
0.0 2.0 4.0 6.0 80 10.0 12.0
Hyd No. 8 Hyd No. 3 Hyd No. 4
14.0 16.0 18.0
Q (cfs)
3.00
2.00
1.00
UMB- 0.00
20.0
Time (hrs)

39
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 1 2017
Hyd. No. 9
Contech North UG
Hydrograph type
= Reservoir
Peak discharge
= 2.829 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 6,465 cuft
Inflow hyd. No.
= 8 - DA -3-4 Combined
Max. Elevation
= 245.92 ft
Reservoir name
= Contech System
Max. Storage
= 1,734 cuft
Storage Indication method used.
Q (cfs
3.00
2.00
1.00
rfiv,7.�
Contech North UG
Hyd. No. 9 -- 2 Year
0 3 6 9 12 15 18 21 24 27
Hyd No. 9 Hyd No. 8 i —i Total storage used = 1,734 cuft
Q (cfs)
3.00
2.00
1.00
30
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 10
Flow From Chambers
Hydrograph type = Diversion1
Storm frequency = 2 yrs
Time interval = 1 min
Inflow hydrograph = 9 - Contech North UG
Diversion method = Pond - Contech System
Peak discharge
Time to peak
Hyd. volume
2nd diverted hyd
Pond structure
Flow From Chambers
40
Wednesday, 05 / 24 / 2017
= 0.073 cfs
= 11.97 hrs
= 4,166 cuft
=11
= Culy/Orf A
Q (cfs) Hyd. No. 10 -- 2 Year Q (cfs)
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 10 -- Pond outlet ® Hyd No. 9 -- Inflow Hyd No. 11 -- 9 minus 10

Hydrograph
Report
41
Hydraflow Hydrographs Extension for AutoCAD@ Civil 31DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 11
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 2.756 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 2,300 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 10
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Q (cfs)
3.00
2.00
1.00
Wier Flow
Hyd. No. 11 -- 2 Year
0.00
0 3 6 9 12 15 18 21 24 27
Hyd No. 11 -- Qin - Pond outlet - Hyd No. 9 -- Inflow Hyd No. 10
Q (cfs)
3.00
2.00
1.00
=M+- 0.00
30
Time (hrs)

42
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 12
DA -1-2 Combined
Hydrograph type
= Combine
Peak discharge
= 1.536 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 3,315 cuft
Inflow hyds.
= 1, 2
Contrib. drain. area
= 0.320 ac
Q (cfs
200
1.00
GTiTiI
DA -1-2 Combined
Hyd. No. 12 -- 2 Year
0.0 2.0 4.0 6.0 8.0 10.0 12.0
Hyd No. 12 Hyd No. 1 ® Hyd No. 2
140 160 18.0
Q (cfs)
2.00
1.00
20.0
Time (hrs)

43
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 13
Contech South UG
Hydrograph type
= Reservoir
Peak discharge
= 1.528 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 3,309 cuft
Inflow hyd. No.
= 12 - DA -1-2 Combined
Max. Elevation
= 246.23 ft
Reservoir name
= Contech South
Max. Storage
= 642 cuft
Storage Indication method used.
Q (cfs
2.00
1.00
�.I
0 2 4
Hyd No. 13
Contech South UG
Hyd. No. 13 -- 2 Year
6 8 10 12 14 16 18 20 22 24
Hyd No. 12 i 1 Total storage used = 642 cuft
Q (cfs)
2.00
1.00
26
Time (hrs)

Hydrograph
Report
44
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 14
Flow From Chambers
Hydrograph type
= Diversion1
Peak discharge
= 0.019 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 1,459 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 15
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Flow From Chambers
Q (cfs) Hyd. No. 14 -- 2 Year Q (cfs)
2.00 2.00
1.00 1.00
0.00 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Time (hrs)
Hyd No. 14 -- Pond outlet Hyd No. 13 -- Inflow - Hyd No. 15 -- 13 minus 14

Hydrograph
Report
45
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 15
Wler Flow
Hydrograph type
= Diversion2
Peak discharge
= 1.510 cfs
Storm frequency
= 2 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 1,851 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 14
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Q (cfs)
2.00
1.00
Wier Flow
Hyd. No. 15 -- 2 Year
0.00
0 2 4 6 8 10 12 14 16
Hyd No. 15 -- Qin - Pond outlet Hyd No. 13 -- Inflow
18 20 22 24
Hyd No. 14
Q (cfs)
2.00
1.00
MM- 0.00
26
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Hyd. No. 16
Combined Flow To Dry Pond North
Hydrograph type = Combine
Storm frequency = 2 yrs
Time interval = 1 min
Inflow hyds. = 6, 11
Peak discharge
Time to peak
Hyd. volume
Contrib. drain. area
46
Wednesday, 05 / 24 / 2017
= 2.938 cfs
= 11.97 hrs
= 2,717 cuft
= 0.170 ac
Combined Flow To Dry Pond North
Q (cfs) Hyd. No. 16 -- 2 Year Q (cfs)
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0
Time (hrs)
Hyd No. 16 Hyd No. 6 Hyd No. 11

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 17
<no description>
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 2 yrs
Time to peak
Time interval
= 1 min
Hyd. volume
Inflow hyd. No.
= 16 - Combined Flow To Dry PcMd)N&Kwation
Reservoir name
= North Dry Pond
Max. Storage
Storage Indication method used.
Q (cfs)
3.00
2.00
1.00
<no description>
Hyd. No. 17 -- 2 Year
47
Wednesday, 05 / 24 12017
= 0.408 cfs
= 12.15 hrs
= 2,733 tuft
= 245.11 ft
= 1,558 tuft
0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Hyd No. 17 Hyd No. 16 ! — Total storage used = 1,558 cuft
Q (cfs)
3.00
2.00
1.00
-- 0.00
22.0
Time (hrs)

48
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 18
MIEN
Routed Flow From Pond
Hydrograph type
= Combine
Peak discharge
= 0.479 cfs
Storm frequency
= 2 yrs
Time to peak
= 12.12 hrs
Time interval
= 1 min
Hyd. volume
= 6,899 cuft
Inflow hyds.
= 10, 17
Contrib. drain. area
= 0.000 ac
Q (cfs)
Routed Flow From Pond
Hyd. No. 18 -- 2 Year Q (cfs)
0 3 6
Hyd No. 18
9 12
Hyd No. 10
15 18 21
Hyd No. 17
24 27 30
33
Time (hrs)
MIEN
iI
�I
I
�M"
hl�
allSIMM
0 3 6
Hyd No. 18
9 12
Hyd No. 10
15 18 21
Hyd No. 17
24 27 30
33
Time (hrs)

Hydrograph Report
49
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 19
Combined Flow To Dry Pond South
Hydrograph type = Combine
Peak discharge
= 1.702 cfs
Storm frequency = 2 yrs
Time to peak
= 11.97 hrs
Time interval = 1 min
Hyd. volume
= 2,293 cuft
Inflow hyds. = 5, 15
Contrib. drain. area
= 0.180 ac
Q (cfs
2.00
1.00
.�.II
Combined Flow To Dry Pond South
Hyd. No. 19 -- 2 Year
0.0 2.0 4.0 6.0 8.0 10.0 12.0
Hyd No. 19 Hyd No. 5 Hyd No. 15
14.0
16.0
Q (cfs)
2.00
1.00
18.0
Time (hrs)

50
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 20
Dry Pond South
Hydrograph type
= Reservoir
Peak discharge
= 0.291 cfs
Storm frequency
= 2 yrs
Time to peak
= 12.13 hrs
Time interval
= 1 min
Hyd. volume
= 2,303 cuft
Inflow hyd. No.
= 19 - Combined Flow To Dry PcMd)SOOvation
= 245.65 ft
Reservoir name
= South Dry Pond
Max. Storage
= 1,115 cuft
Storage Indication method used.
Q (cfs
2.00
1.00
rrre
Dry Pond South
Hyd. No. 20 -- 2 Year
Q (cfs)
2.00
1.00
ffilliril
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Time (hrs)
Hyd No. 20 Hyd No. 19 l_-___ Total storage used = 1,115 cuft

51
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 21
Routed Flow Leaving South Pond
Hydrograph type = Combine Peak discharge = 0.310 cfs
Storm frequency = 2 yrs Time to peak = 12.13 hrs
Time interval = 1 min Hyd. volume = 3,762 cuft
Inflow hyds. = 14, 20 Contrib. drain. area = 0.000 ac
Q (Cfs)
Routed Flow Leaving South Pond
Hyd. No. 21 -- 2 Year
Q (cfs)
0 4
Hyd No. 21
8 12 16
Hyd No. 14
20 24
- Hyd No. 20
28 32 36
40
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 22
Total FLow Leaving Site
Hydrograph type = Combine
Storm frequency = 2 yrs
Time interval = 1 min
Inflow hyds. = 18, 21
Q (cfs)
52
Wednesday, 05 / 24 / 2017
Peak discharge
= 0.789 cfs
Time to peak
= 12.13 hrs
Hyd. volume
= 10,660 cuft
Contrib. drain. area
= 0.000 ac
Total FLow Leaving Site
Hyd. No. 22 -- 2 Year
Q (cfs)
0 3 6
Hyd No. 22
9 12 15
Hyd No. 18
18 21 24
- Hyd No. 21
27 30 33
36
Time (hrs)
■
�m
0 3 6
Hyd No. 22
9 12 15
Hyd No. 18
18 21 24
- Hyd No. 21
27 30 33
36
Time (hrs)

53
Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
1 247
1
717
2,841
------
------
------
DA -1
2
SCS Runoff
1 161
1
717
2,512
------
------
------
DA -2
3
SCS Runoff
2 802
1
717
6,663
------
------
------
DA -3
4
SCS Runoff
1.521
1
717
3,384
------
------
------
DA -4
5
SCS Runoff
0 542
1
718
1,105
------
------
------
Area to South Dry Pond
6
SCS Runoff
0.512
1
718
1,044
------
------
------
Area to North Dry Pond
7
SCS Runoff
3 674
1
718
7,493
------
------
------
Predevelopment
8
Combine
4 323
1
717
10,047
3, 4,
------
------
DA -3-4 Combined
9
Reservoir
4 293
1
718
10,042
8
24604
1,786
Contech North UG
10
Diversionl
0 077
1
716
5,005
9
------
------
Flow From Chambers
11
Diversion2
4 216
1
718
5,037
9
------
------
Wier Flow
12
Combine
2.409
1
717
5,353
1, 2,
------
------
DA -1-2 Combined
13
Reservoir
2 396
1
718
5,347
12
24632
668
Contech South UG
14
Diversionl
0 020
1
717
1,614
13
------
------
Flow From Chambers
15
Diversion2
2 376
1
718
3,732
13
------
------
Wier Flow
16
Combine
4 728
1
718
6,081
6, 11,
------
------
Combined Flow To Dry Pond North
17
Reservoir
1 581
1
725
6,104
16
24591
3,307
<no description>
18
Combine
1 653
1
725
11,109
10, 17
------
------
Routed Flow From Pond
19
Combine
2 918
1
718
4,838
5, 15,
------
------
Combined Flow To Dry Pond South
20
Reservoir
0 437
1
729
4,848
19
24625
2,374
Dry Pond South
21
Combine
0 455
1
729
6,463
14,20
------
------
Routed Flow Leaving South Pond
22
Combine
2 105
1
725
17,572
18,21
------
------
Total FLow Leaving Site
P:\2017\DaVita - Rockfish 17-021\- Civil\Cal
ulRr3tmy&RaViid:R&-Yb In Contech.
Wednesday, 05 / 24 / 2017

54
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD@) Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 1
DA -1
Hydrograph type
= SCS Runoff
Peak discharge
= 1.247 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 2,841 cuft
Drainage area
= 0.160 ac
Curve number
= 94*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.44 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) _ [(0 150
x 98) + (0 010 x 39)] / 0.160
DA -1
Q (cfs)
Hyd No. 1 -- 10 Year
Q (cfs)
2.00
2.00
I
I
4
1.00
1.00
--
0.00
LJ
�—L
0.00
0.0
20
40 6.0 8.0 10.0
12.0 14.0 16.0
18.0 20.0
Time
(hrs)
Hyd
No. 1

55
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 2
07_
Hydrograph type
= SCS Runoff
Peak discharge
= 1.161 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 2,512 cuft
Drainage area
= 0.160 ac
Curve number
= 89*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.44 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = ((0 120 x 98) + (0 040 x 61)] / 0 160
i
Q (cfs
2.00
1.00
.rrr>t
0.0 2.0
Hyd No. 2
DA -2
Hyd. No. 2 -- 10 Year
4.0 6.0 8.0 100 12.0 14.0 16.0 18.0
Q (cfs)
2.00
MIM
20.0
Time (hrs)

56
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 3
DA -3
Hydrograph type
= SCS Runoff
Peak discharge
= 2.802 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 6,663 cuft
Drainage area
= 0.350 ac
Curve number
= 97*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.44 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(0.340 x 98) + (0 010 x 61)] / 0 350
Q (cfs
3.00
2.00
1.00
WITH
0.0 2.0
Hyd No. 3
Dao -3
Hyd. No. 3 -- 10 Year
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
3.00
2.00
1.00
20.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@) Civil 3DO 2016 by Autodesk, Inc. v11
Hyd. No. 4
DA -4
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 1 min
Drainage area
= 0.200 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 5.44 in
Storm duration
= 24 hrs
" Composite (Area/CN) = [(0 170 x 98) + (0 030 x 61)] / 0.200
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
DA -4
Q (cfs) Hyd. No. 4 -- 10 Year
L.uu
1.00
.rm
0.0 2.0
Hyd No. 4
57
Wednesday, 05 / 24 / 2017
= 1.521 cfs
= 11.95 hrs
= 3,384 tuft
= 92*
= 0 ft
= 5.00 min
= Type II
= 484
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
2.00
1.00
20.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 5
Time to peak
Area to South Dry Pond
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 1 min
Drainage area
= 0.180 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 5.44 in
Storm duration
= 24 hrs
Q (cfs)
58
Wednesday, 05 / 24 / 2017
Peak discharge
= 0.542 cfs
Time to peak
= 11.97 hrs
Hyd. volume
= 1,105 cuft
Curve number
= 61
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to South Dry Pond
Hyd. No. 5 -- 10 Year Q (cfs)
A AA
0 2 4
Hyd No. 5
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)
ME
■
■
- - - - ------ ONE
Emil
NN
0 2 4
Hyd No. 5
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)

59
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 6
Area to North Dry Pond
Hydrograph type
= SCS Runoff
Peak discharge
= 0.512 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 1,044 cuft
Drainage area
= 0.170 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= Oft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.44 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
Area to North Dry Pond
Hyd. No. 6 -- 10 Year Q (cfs)
1,00
I.VV
0.90
_ 0.90
.._...___..��
w
_.�.._ _
.......�.�
�....�
.....�..�_
�
..
0.80
0.80
_.�
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.20
_..
...
.......�
._...........
_
�
�.
.�.�......_
0.10
0.10
0 00
0.00
0 2 4
Hyd No. 6
6 8 10 12 14 16 18 20 22 24 26
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Hyd. No. 7
Time to peak
Predevelopment
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 1 min
Drainage area
= 1.220 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 5.44 in
Storm duration
= 24 hrs
Q (cfs)
60
Wednesday, 05 / 24 / 2017
Peak discharge
= 3.674 cfs
Time to peak
= 11.97 hrs
Hyd. volume
= 7,493 cuft
Curve number
= 61
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 6.60 min
Distribution
= Type II
Shape factor
= 484
Predevelopment
Hyd. No. 7 -- 10 Year
Q (cfs)
4.00
3.00
2.00
1.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Hyd No. 7 Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Hyd. No. 8
DA -3-4 Combined
Hydrograph type = Combine
Storm frequency = 10 yrs
Time interval = 1 min
Inflow hyds. = 3, 4
61
Wednesday, 05 / 24 / 2017
Peak discharge
= 4.323 cfs
Time to peak
= 11.95 hrs
Hyd. volume
= 10,047 cuft
Contrib. drain. area
= 0.550 ac
DA -3-4 Combined
Q (cfs) Hyd. No. 8 -- 10 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
00 20 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 8 Hyd No. 3 Hyd No. 4

62
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Wednesday, 05 1 24 / 2017
Hyd. No. 9
Contech North UG
Hydrograph type
= Reservoir
Peak discharge
= 4.293 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 10,042 cuft
Inflow hyd. No.
= 8 - DA -3-4 Combined
Max. Elevation
= 246.04 ft
Reservoir name
= Contech System
Max. Storage
= 1,786 cuft
Storage Indication method used.
Contech North UG
Q (cfs) Hyd. No. 9 -- 10 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 9 Hyd No. 8 E Total storage used = 1,786 cuft

63
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 10
Flow From Chambers
Hydrograph type
= Diversion'!
Peak discharge
= 0.077 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.93 hrs
Time interval
= 1 min
Hyd. volume
= 5,005 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 11
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Flow From Chambers
Q (cfs) Hyd. No. 10 -- 10 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 10 -- Pond outlet Hyd No. 9 -- Inflow - Hyd No. 11 -- 9 minus 10

64
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 11
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 4.216 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 5,037 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 10
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Wier Flow
Q (cfs) Hyd. No. 11 -- 10 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 200
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 11 -- Qin - Pond outlet Hyd No. 9 -- Inflow Hyd No. 10

65
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 12
DA -1-2 Combined
Hydrograph type
= Combine
Peak discharge
= 2.409 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 5,353 cuft
Inflow hyds.
= 1, 2
Contrib. drain. area
= 0.320 ac
Q (cfs
3.00
2.00
1 00
NV T>t
DA -1-2 Combined
Hyd. No. 12 -- 10 Year
0.0 2.0 4.0 6.0 8.0 10.0 12.0
Hyd No. 12 Hyd No. 1 Hyd No. 2
14.0 16.0 18.0
Q (cfs)
300
2.00
1.00
20.0
Time (hrs)

Hydrograph
Report
66
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 13
Contech South UG
Hydrograph type
= Reservoir
Peak discharge
= 2.396 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 5,347 cuft
Inflow hyd. No.
= 12 - DA -1-2 Combined
Max. Elevation
= 246.32 ft
Reservoir name
= Contech South
Max. Storage
= 668 cuft
Storage Indication method used.
Q (cfs
3.00
2.00
we
MUM
Contech South UG
Hyd. No. 13 -- 10 Year
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Hyd No. 13 Hyd No. 12 - _ _ Total storage used = 668 cuft
Q (cfs)
3.00
2.00
1.00
20.0
Time (hrs)

Hydrograph
Report
67
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 14
Flow From Chambers
Hydrograph type
= Diversion'!
Peak discharge
= 0.020 cfs
Storm frequency
= 10 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 1,614 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 15
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Flow From Chambers
Q (cfs) Hyd. No. 14 -- 10 Year Q (cfs)
300 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 14 -- Pond outlet ® Hyd No. 13 -- Inflow - Hyd No. 15 -- 13 minus 14

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 15
Wler Flow
Hydrograph type
= Diversion2
Storm frequency
= 10 yrs
Time interval
= 1 min
Inflow hydrograph
= 13 - Contech South UG
Diversion method
= Pond - Contech South
Q (cfs)
3.00
2.00
1.00
Peak discharge
Time to peak
Hyd. volume
2nd diverted hyd.
Pond structure
Willer Flow
Hyd No. 15 -- 10 Year
Wednesday, 05 / 24 / 2017
= 2.376 cfs
= 11.97 hrs
= 3,732 tuft
=14
= Culy/Orf A
Q (cfs)
3.00
2.00
1.00
g 111
. 1 4.0 6.0
_..__ • No. w Pond o
8.0 10.0 12.0
® Hyd No. 13 -- Inflow
14.0 16.0
Hyd No. 14
18.0
20.0
Time (hrs)

Q (cfs)
5.00
4.00
3.00
-- 2.00
1.00
Combined Flow To Dry Pond North
Hyd. No. 16 -- 10 Year
0.0 2.0 4.0 .0
• No. 6
8.0 10.0
® Hyd No. 11
12.0 14.0
Q (cfs)
5.00
4.00
3.00
2.00
1.00
16.0
Time (hrs)
69
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 16
Combined Flow To Dry Pond North
Hydrograph type = Combine
Peak discharge
= 4.728 cfs
Storm frequency = 10 yrs
Time to peak
= 11.97 hrs
Time interval = 1 min
Hyd. volume
= 6,081 cuft
Inflow hyds. = 6, 11
Contrib. drain. area
= 0.170 ac
Q (cfs)
5.00
4.00
3.00
-- 2.00
1.00
Combined Flow To Dry Pond North
Hyd. No. 16 -- 10 Year
0.0 2.0 4.0 .0
• No. 6
8.0 10.0
® Hyd No. 11
12.0 14.0
Q (cfs)
5.00
4.00
3.00
2.00
1.00
16.0
Time (hrs)

Hydrograph
Report
70
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 17
<no description>
Hydrograph type
= Reservoir
Peak discharge
= 1.581 cfs
Storm frequency
= 10 yrs
Time to peak
= 12.08 hrs
Time interval
= 1 min
Hyd. volume
= 6,104 cuft
Inflow hyd. No.
= 16 - Combined Flow To Dry PcMd)NEfgyation
= 245.91 ft
Reservoir name
= North Dry Pond
Max. Storage
= 3,307 cuft
Storage Indication method used
Q (cfs)
5.00
4.00
3.00
2.00
1.00
0.00
0.0 2.0
Hyd No. 17
<no description>
Hyd. No. 17 -- 10 Year
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Hyd No. 16 �_ _ 1 Total storage used = 3,307 cuft
Q (cfs)
5.00
i II
3.00
2.00
1.00
0.00
20.0
Time (hrs)

Hydrograph Report
71
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 18
Routed Flow From Pond
Hydrograph type = Combine
Peak discharge
= 1.653 cfs
Storm frequency = 10 yrs
Time to peak
= 12.08 hrs
Time interval = 1 min
Hyd. volume
= 11,109 tuft
Inflow hyds. = 10, 17
Contrib. drain. area
= 0.000 ac
Q (cfs)
2.00
1.00
Routed Flow From Pond
Hyd. No. 18 -- 10 Year
0 00
0 3 6 9 12 15 18 21
Hyd No. 18 Hyd No. 10 Hyd No. 17
24 27 30
Q (cfs)
2.00
1.00
--J- 0.00
33
Time (hrs)

72
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Wednesday, 05 / 24 / 2017
Hyd. No. 19
Combined Flow To Dry Pond South
Hydrograph type = Combine
Peak discharge
= 2.918 cfs
Storm frequency = 10 yrs
Time to peak
= 11.97 hrs
Time interval = 1 min
Hyd. volume
= 4,838 cuft
Inflow hyds. = 5, 15
Contrib. drain. area
= 0.180 ac
Q (cfs
3.00
i
_ 2.00
I�
I I
I
1.00
0.0 2.0
. No. 19
Combined Flow To Dry Pond South
Hyd. No. 19 -- 10 Year
4.0 6.0
Hyd No. 5
8.0 10.0 12.0
- Hyd No. 15
14.0 16.0
Q (cfs)
3.00
2.00
1.00
18.0
Time (hrs)

73
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 1 2017
Hyd. No. 20
Dry Pond South
Hydrograph type
= Reservoir
Peak discharge
= 0.437 cfs
Storm frequency
= 10 yrs
Time to peak
= 12.15 hrs
Time interval
= 1 min
Hyd. volume
= 4,848 cuft
Inflow hyd. No.
= 19 - Combined Flow To Dry PdW&SEitYvation
= 246.25 ft
Reservoir name
= South Dry Pond
Max. Storage
= 2,374 tuft
Storage Indication method used.
Q (cfs)
3.00
2.00
1.00
rava�
Dry Pond South
Hyd. No. 20 -- 10 Year
- - --------- - ------
Q (cfs)
3.00
2.00
1.00
1 11
0 3 6 9 12 15 18 21 24 27
Time (hrs)
Hyd No. 20 Hyd No. 19 _ --1 Total storage used = 2,374 cuft

74
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
0.50
Wednesday, 05 / 24 12017
Hyd. No. 21
Routed Flow Leaving South Pond
Hydrograph type = Combine
Peak discharge
= 0.455 cfs
Storm frequency = 10 yrs
Time to peak
= 12.15 hrs
Time interval = 1 min
Hyd. volume
= 6,463 cuft
Inflow hyds. = 14, 20
Contrib. drain. area
= 0.000 ac
Routed Flog Leaving South Pond
Q (cfs) Hyd. No. 21 -- 10 Year Q (cfs)
0.50
0.50
0.45
0.45
0.40
0.40
0.35
0.35
0.30
0.30
0.25
0.25
�
0.20
0.20
�
�
0.15
�
0.15
0.10
0.10
0.05
0.05
0.00 .�.�........:............ �_. w ,__ �w � _ u..,� .,�,.,....N...... .. __. � _. �. �.. 0.00
0 4 8 12 16 20 24 28 32 36 40
Time (hrs)
Hyd No. 21 Hyd No. 14 Hyd No. 20

75
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 22
Total FLow Leaving Site
Hydrograph type
= Combine
Peak discharge
= 2.105 cfs
Storm frequency
= 10 yrs
Time to peak
= 12.08 hrs
Time interval
= 1 min
Hyd. volume
= 17,572 cuft
Inflow hyds.
= 18, 21
Contrib. drain. area
= 0.000 ac
Q (cfs
3.00
2.00
1.00
raLT6I
Total FLow Leaving Site
Hyd. No. 22 -- 10 Year
0 3 6 9 12 15 18 21
Hyd No. 22 Hyd No. 18 Hyd No. 21
24 27 30
Q (cfs)
3.00
2.00
1.00
33
Time (hrs)

Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
1 935
1
717
4,528
------
------
------
DA -1
2
SCS Runoff
1 864
1
717
4,170
------
------
------
DA -2
3
SCS Runoff
4 288
1
717
10,377
------
------
------
DA -3
4
SCS Runoff
2 389
1
717
5,481
------
------
------
DA -4
5
SCS Runoff
1 227
1
718
2,466
------
------
------
Area to South Dry Pond
6
SCS Runoff
1 159
1
718
2,329
------
------
------
Area to North Dry Pond
7
SCS Runoff
8 317
1
718
16,713
------
------
------
Predevelopment
8
Combine
6 676
1
717
15,858
3, 4,
------
------
DA -3-4 Combined
9
Reservoir
6 631
1
718
15,853
8
246.20
1,857
Contech North UG
10
Diversion1
0 077
1
712
5,909
9
------
------
Flow From Chambers
11
Diversion2
6 555
1
718
9,943
9
------
------
Wier Flow
12
Combine
3 799
1
717
8,698
1, 2,
------
------
DA -1-2 Combined
13
Reservoir
3 780
1
717
8,692
12
24643
694
Contech South UG
14
Diversion1
0 020
1
712
1,745
13
------
------
Flow From Chambers
15
Diversion2
3 760
1
717
6,947
13
------
------
Wier Flow
16
Combine
7 713
1
718
12,272
6, 11,
------
------
Combined Flow To Dry Pond North
17
Reservoir
6.269
1
721
12,298
16
24627
4,282
<no description>
18
Combine
6 346
1
721
18,208
10,17
------
------
Routed Flow From Pond
19
Combine
4 981
1
718
9,413
5, 15,
------
------
Combined Flow To Dry Pond South
20
Reservoir
0 733
1
729
9,421
19
24703
4,486
Dry Pond South
21
Combine
0 752
1
729
11,167
14,20
------
------
Routed Flow Leaving South Pond
22
Combine
6 909
1
721
29,374
18,21
------
------
Total FLow Leaving Site
P:\2017\DaVlta - Rockfish 17-021\- Civil\Cal IluFAUb
rA1RaVdd:RO&VsfllContech.
Wednesday, 05 / 24 / 2017

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 1
DA -1
Hydrograph type
= SCS Runoff
Storm frequency
= 100 yrs
Time interval
= 1 min
Drainage area
= 0.160 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 8.28 in
Storm duration
= 24 hrs
Composite (Area/CN) = [(0 150 x 98) + (0 010 x 39)] / 0.160
Q (cfs
2.00
1 00
(7711
0.0 2.0
Hyd No. 1
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
DA -1
Hyd. No. 1 -- 100 Year
I
Wednesday, 05 / 24 / 2017
= 1.935 cfs
= 11.95 hrs
= 4,528 tuft
= 94*
= 0 ft
= 5.00 min
= Type II
= 484
40 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
2.00
1.00
20.0
Time (hrs)

a
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 12017
Hyd. No. 2
BEIM
Hydrograph type
= SCS Runoff
Peak discharge
= 1.864 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 4,170 cult
Drainage area
= 0.160 ac
Curve number
= 89*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.28 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) _ [(0 120 x 98) + (0 040 x 61)] / 0.160
Q (Cfs)
2.00
1.00
0.00
0.0 2.0
Hyd No. 2
DA -2
Hyd. No. 2 -- 100 Year
4.0 6.0 8.0 10.0 12.0 140 16.0 18.0
Q (cfs)
2.00
1.00
—1"- 0.00
20.0
Time (hrs)

79
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCADO Civil 31DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 3
DA-3
Hydrograph type
Storm frequency
Time interval
= SCS Runoff
= 100 yrs
= 1 min
Peak discharge
Time to peak
Hyd. volume
= 4.288 cfs
= 11.95 hrs
= 10,377 cuft
Drainage area
= 0.350 ac
Curve number
= 97*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.28 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) _ [(0 340 x 98) + (0 010 x 61)] / 0 350
DA-3
Q (cfs)
Hyd. No. 3 -- 100 Year
Q (cfs)
5.00
5.00
4.00
4.00
3.00
3.00
2.00
2.00
1.00
1.00
0.00
0.00
0.02.0
4.0 6.0 8.0
10.0 12.0 14.0 16.0
18.0 20.0
Time
(hrs)
Hyd No.
3

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 4
DA -4
Hydrograph type
= SCS Runoff
Peak discharge
= 2.389 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 5,481 cuft
Drainage area
= 0.200 ac
Curve number
= 92*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.28 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
* Composite (Area/CN) = [(0 170 x 98) + (0 030 x 61)] / 0 200
Q (cfs
3.00
2.00
1.00
r.Ta>t
0.02.0
Hyd No. 4
DA -4
Hyd. No. 4 -- 100 Year
4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Q (cfs)
3.00
2.00
1 00
20.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 5
Area to South Dry Pond
Hydrograph type
= SCS Runoff
Storm frequency
= 100 yrs
Time interval
= 1 min
Drainage area
= 0.180 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 8.28 in
Storm duration
= 24 hrs
Q (cfs
2.00
1 00
WITH
0 2 4
Hyd No. 5
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
Area to South Dry Pond
Hyd. No. 5 -- 100 Year
81
Wednesday, 05 / 24 / 2017
= 1.227 cfs
= 11.97 hrs
= 2,466 cuft
= 61
= 0 ft
= 5.00 min
= Type II
= 484
6 8 10 12 14 16 18 20 22 24
Q (cfs)
2.00
1.00
26
Time (hrs)

Hydrograph
Report
82
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 6
Area to North Dry Pond
Hydrograph type
= SCS Runoff
Peak discharge
= 1.159 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 2,329 cuft
Drainage area
= 0.170 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.28 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to North Dry Pond
Q (cfs) Hyd. No. 6 -- 100 Year Q (cfs)
2.00 2.00
1.00 1.00
0.00 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Hyd No. 6 Time (hrs)

83
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 7
Predevelopment
Hydrograph type
Storm frequency
Time interval
= SCS Runoff
= 100 yrs
= 1 min
Peak discharge
Time to peak
Hyd. volume
= 8.317 cfs
= 11.97 hrs
= 16,713 cuft
Drainage area
= 1.220 ac
Curve number
= 61
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 6.60 min
Total precip.
= 8.28 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
Predevelopment
Hyd. No. 7 -- 100 Year
Q (cfs)
10.00
10.00
8.00
8.00
6.00
6.00
4.00
4.00
2.00
2.00
0.00
0.00
0 2 4 6 8 10
12 14 16 18 20 22
24 26
Time (hrs)
Hyd No. 7

84
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 8
DA -3-4 Combined
Hydrograph type
= Combine
Peak discharge
= 6.676 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 15,858 cuft
Inflow hyds.
= 3, 4
Contrib. drain. area
= 0.550 ac
DA -3-4 Combined
Q (cfs) Hyd. No 8 -- 100 Year Q (cfs)
7.00 7.00
6.00 6.00
5.00 5.00
4.00 4.00
3.00 3.00
2.00 200
1.00 1.00
0 00 0.00
00 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 8 Hyd No. 3 ® Hyd No. 4

85
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 9
Contech North UG
Hydrograph type
= Reservoir
Peak discharge
= 6.631 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 15,853 cuft
Inflow hyd. No.
= 8 - DA -3-4 Combined
Max. Elevation
= 246.20 ft
Reservoir name
= Contech System
Max. Storage
= 1,857 cuft
Storage Indication method used.
Contech North UG
Q (cfs) Q (cfs)
Hyd. No. 9 -- 100 Year
7.00 7.00
6.00 6.00
5.00 _.�,.... �..�..�. � _. ..M..._._ ..._..�. 5.00
4.00 4.00
3.00 3.00
2.00 _............._ ._.�___.. �... _�. � � 2.00
1.00 1.00
0.00 � __.._.,.._. � _ 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24
Time (hrs)
Hyd No. 9 Hyd No. 8 :__ _-_I Total storage used = 1,857 cuft

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 10
Flow From Chambers
Hydrograph type
= Diversion1
Peak discharge
= 0.077 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.87 hrs
Time interval
= 1 min
Hyd. volume
= 5,909 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 11
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Flow From Chambers
Q (cfs) Hyd. No. 10 -- 100 Year Q (cfs)
7.00 7.00
6.00 6.00
5.00 _ �.�.... . u..�.w...� __�_...w_ �..�.._..�.. _. 5.00
4.00 4.00
3.00 3.00
2.00 ..�.._..� �.._. _.�_,... � � ..... �.m. _.�.�....� ..�.....�.�.�.. 2.00
1.00 1.00
0.00 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24
Time (hrs)
Hyd No. 10 -- Pond outlet Hyd No. 9 -- Inflow - Hyd No. 11 -- 9 minus 10

87
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11 Wednesday, 05 / 24 / 2017
Hyd. No. 11
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 6.555 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.97 hrs
Time interval
= 1 min
Hyd. volume
= 9,943 cuft
Inflow hydrograph
= 9 - Contech North UG
2nd diverted hyd.
= 10
Diversion method
= Pond - Contech System
Pond structure
= Culy/Orf A
Wler Flow
Q (cfs) Hyd. No. 11 -- 100 Year Q (cfs)
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0 00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0 2 4 6 8 10 12 14 16 18 20 22 24
Time (hrs)
Hyd No. 11 -- Qin - Pond outlet Hyd No. 9 -- Inflow Hyd No. 10

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 12
DA -1-2 Combined
Hydrograph type
= Combine
Peak discharge
= 3.799 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 8,698 cuft
Inflow hyds.
= 1, 2
Contrib. drain. area
= 0.320 ac
DA -1-2 Combined
Q (cfs) Hyd. No. 12 -- 100 Year Q (cfs)
4.00 4.00
300 3.00
200 2.00
1.00 1 00
0.00 0.00
0.0 2.0 4.0 6.0 80 10.0 120 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 12 Hyd No. 1 Hyd No. 2

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Hyd. No. 13
Contech South UG
Hydrograph type
= Reservoir
Storm frequency
= 100 yrs
Time interval
= 1 min
Inflow hyd. No.
= 12 - DA -1-2 Combined
Reservoir name
= Contech South
Storage Indication method used.
Q (cfs)
4.00
2.00
1.00
Peak discharge
Time to peak
Hyd. volume
Max. Elevation
Max. Storage
Contech South UG
Hyd. No. 13 -- 100 Year
89
Wednesday, 05 / 24 / 2017
= 3.780 cfs
= 11.95 hrs
= 8,692 cuft
= 246.43 ft
= 694 cuft
0.00 l I I I I 1--
0.02.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0
Hyd No. 13 Hyd No. 12 _I Total storage used = 694 cuft
Q (cfs)
4.00
3.00
2.00
1.00
---? 0.00
20.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Hyd. No. 14
Flow From Chambers
Hydrograph type
= Diversion1
Storm frequency
= 100 yrs
Time interval
= 1 min
Inflow hydrograph
= 13 - Contech South UG
Diversion method
= Pond - Contech South
Peak discharge
Time to peak
Hyd. volume
2nd diverted hyd
Pond structure
Flow From Chambers
M
Wednesday, 05 / 24 / 2017
= 0.020 cfs
= 11.87 hrs
= 1,745 cuft
=15
= Culy/Orf A
Q (cfs) Hyd No. 14 -- 100 Year Q (cfs)
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
00 2.0 40 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 14 -- Pond outlet Hyd No. 13 -- Inflow Hyd No. 15 -- 13 minus 14

Hydrograph
Report
91
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 15
Wier Flow
Hydrograph type
= Diversion2
Peak discharge
= 3.760 cfs
Storm frequency
= 100 yrs
Time to peak
= 11.95 hrs
Time interval
= 1 min
Hyd. volume
= 6,947 cuft
Inflow hydrograph
= 13 - Contech South UG
2nd diverted hyd.
= 14
Diversion method
= Pond - Contech South
Pond structure
= Culy/Orf A
Wier Flow
Q (cfs) Hyd. No. 15 -- 100 Year Q (cfs)
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
L==LL
0.00 0.00
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 200
Time (hrs)
Hyd No. 15 -- Qin - Pond outlet Hyd No. 13 -- Inflow Hyd No. 14

92
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 16
Combined Flow To Dry Pond North
Hydrograph type = Combine
Peak discharge
= 7.713 cfs
Storm frequency = 100 yrs
Time to peak
= 11.97 hrs
Time interval = 1 min
Hyd. volume
= 12,272 cuft
Inflow hyds. = 6, 11
Contrib. drain. area
= 0.170 ac
Q (cfs
8.00
6.00
4.00
M
f171TA7
Combined Flow To Dry Pond North
Hyd. No. 16 -- 100 Year
0.0 2.0 4.0 6.0 8.0 10.0
Hyd No. 16 Hyd No. 6 - Hyd No. 11
12.0
14.0
Q (cfs)
8.00
MIR
4.00
2.00
16.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc. v11
Hyd. No. 17
ono description>
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 100 yrs
Time to peak
Time interval
= 1 min
Hyd. volume
Inflow hyd. No.
= 16 - Combined Flow To Dry PcMd)NEVyation
Reservoir name
= North Dry Pond
Max. Storage
Storage Indication method used.
Q (cfs)
8.00
.11
4.00
2.00
0.00 -1-
0.0 2.0
Hyd No. 17
<no description>
Hyd. No. 17 -- 100 Year
93
Wednesday, 05 / 24 / 2017
= 6.269 cfs
= 12.02 hrs
= 12,298 cuft
= 246.27 ft
= 4,282 cuft
4.0 6.0 8.0 10.0 12.0 14.0 16.0
Hyd No. 16 �_ - I Total storage used = 4,282 cuft
Q (cfs)
8.00
4.00
2.00
0.00
18.0
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v11
Hyd. No. 18
Routed Flow From Pond
Hydrograph type = Combine
Storm frequency = 100 yrs
Time interval = 1 min
Inflow hyds. = 10, 17
94
Wednesday, 05 / 24 / 2017
Peak discharge
= 6.346 cfs
Time to peak
= 12.02 hrs
Hyd. volume
= 18,208 cuft
Contrib. drain. area
= 0.000 ac
Routed Flow From Pond
Q (cfs) Hyd. No. 18 -- 100 Year Q (cfs)
700 7.00
6.00 6.00
5.00 � � � � 5.00
400 �.._ ..... __. _._ ... ._�....__.. .. 4.00
300 3.00
2.00 2.00
1.00 1.00
0.00 � 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Time (hrs)
Hyd No. 18 Hyd No. 10 Hyd No. 17

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2016 by Autodesk, Inc. v11
Hyd. No. 19
Combined Flow To Dry Pond South
Hydrograph type = Combine
Storm frequency = 100 yrs
Time interval = 1 min
Inflow hyds. = 5, 15
95
Wednesday, 05 / 24 / 2017
Peak discharge
= 4.981 cfs
Time to peak
= 11.97 hrs
Hyd. volume
= 9,413 cuft
Contrib. drain. area
= 0.180 ac
Combined Flow To Dry Pond South
Q (cfs) Hyd. No. 19 -- 100 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0.0 20 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (hrs)
Hyd No. 19 Hyd No. 5 Hyd No. 15

96
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 31D® 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 20
Dry Pond South
Hydrograph type
= Reservoir
Peak discharge
= 0.733 cfs
Storm frequency
= 100 yrs
Time to peak
= 12.15 hrs
Time interval
= 1 min
Hyd. volume
= 9,421 cuft
Inflow hyd. No.
= 19 - Combined Flow To Dry Pdb d)SEldvation
= 247.03 ft
Reservoir name
= South Dry Pond
Max. Storage
= 4,486 cuft
Storage Indication method used.
Dry Pond South
Q (cfs) Hyd. No. 20 -- 100 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 0.00
0 3 6 9 12 15 18 21 24 27
Time (hrs)
Hyd No. 20 Hyd No. 19 ___ __ _=__1 Total storage used = 4,486 cult

97
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2016 by Autodesk, Inc v11
Wednesday, 05 / 24 / 2017
Hyd. No. 21
Routed Flow Leaving South Pond
Hydrograph type = Combine
Peak discharge
= 0.752 cfs
Storm frequency = 100 yrs
Time to peak
= 12.15 hrs
Time interval = 1 min
Hyd. volume
= 11,167 cuft
Inflow hyds. = 14, 20
Contrib. drain. area
= 0.000 ac
0 4
Hyd No. 21
8 12
Hyd No. 14
16 20 24
Hyd No. 20
28
32
36
Time (hrs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2016 by Autodesk, Inc v11
7.00
Wednesday, 05 / 24 / 2017
Hyd. No. 22
Total Flow Leaving Site
Hydrograph type
= Combine
Peak discharge
= 6.909 cfs
Storm frequency
= 100 yrs
Time to peak
= 12.02 hrs
Time interval
= 1 min
Hyd. volume
= 29,374 cuft
Inflow hyds.
= 18, 21
Contrib. drain. area
= 0.000 ac
Total Flow Leaving Site
Q (cfs) Hyd. No. 22 -- 100 Year Q (cfs)
7.00
7.00
6.00
6.00
�
5.00
500
4.00
4.00
3.00
3.00
2.00
2.00
1.00
1.00
0.00 ...._.._._...._»_»... .�...__.�..w � 0.00
0 3 6 9 12 15 18 21 24 27 30
Time (hrs)
Hyd No. 22 Hyd No. 18 Hyd No. 21

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