Design Summary and Calculations

Design & Calculation Summary — 3M SPPP Project
Date: 4/11/21
Engineer of Record: Trevor Crawford, PE, 3M IMPD
Area 1: Basin 4
Background:
Basin 4 is to be added to the site as an enhanced best management practice (BMP) to the general
aggregate processing area, in addition to the current adjacent rock dams. Generally, the whole west side
of quarry plant area will drain to this new basin. 3M's stormwater outfall 006 will be relocated to the
outlet of this new basin.
Basin 4 is designed to meet the general design standards for a Sediment Basin in the Stormwater Design
Manual and is designed to be permanent. This design criteria exceeds the requirements under the North
Carolina Erosion and Sediment Control Planning and Design Manual.
There is a culvert planned upstream of basin 4, which will divert a quarry equipment maintenance area
to basin 4
The general design criteria for sizing (Basin 4):
• Drainage Area: 22.03 ac
• Percent Impervious: 64%
• Sediment storage required: 1,800 cubic feet per acre = 39,654 cubic feet required
o Designed sediment storage:
■ Approximately 138,636 cubic feet provided above the inlet invert elevation
■ Additional sediment storage in permanent pool: 74,374 cubic feet
■ Conclusion: the designed basin storage conservatively exceeds requirement.
• Surface Area requirements: 435 square feet per cfs of Q10 peak inflow:
o Q10 inflow = 78.46 cfs
o Required surface area: (435) x (78.46) = 34,130 sf
■ Surface area of Basin 4 at 439.00' msl = 31,429 sf
■ Forebay 1 surface area = 5,118 sf
■ Forebay 2 surface area = 2,609 sf
■ Forebay 3 surface area = 1,541
■ Total Surface area = 40,697 sf
■ Conclusion: the designed surface area meets requirement
• Permanent Pool Depth: 5 feet, meets minimum depth of 2 feet.
• Length to Width ratio: approximately 2:1
• No baffles are included due to the permanent pool design. The permanent pool will provide the
same goals as the baffles.

Flow & Outlet Structure Summ
The following parameters for flow calculations are the following:
Parameter
Remarks
Stormwater Calculation Methodology
SCS TR-20
Stormwater Software
HydroCAD Version 10
Precipitation Quantity
NOAA Atlas 14, Moncure, NC Station
1-year
2.96"
2-year
3.57"
5- year
4.47"
10-year
5.18"
25-year
6.13"
100-year
7.67"
Precipitation duration
24 hours
Precipitation distribution
SCS Type II
Water Quality target drawdown time
3 days targeted
The outlet structure is designed with a Faircloth Skimmer with an overflow weir. This structure is to be
constructed at the inlet of an existing 54" RCP culvert. Skimmer sizing was completed using resources at
Faircloth Skimmers (www.fairclothskimmer.com).
Skimmer Summary:
• Volume of water to treat: 138,636 cubic feet*
• Draw down time: 3 days
• Output:
o Skimmer size: 6"
o Orifice radius: 2.8"
o Orifice diameter: 5.7"
• 6" skimmer flow capacity: 51,840 cf/day = 0.60 CFS
*elevation 434.00' (permanent pool) to elevation 439.50 (top of box structure)
Flow summary table:
Storm (year) - 24
hour, type II
distribution
Precipitation
(inches)
Q - Pre-
development
(cfs)
Q-in Post
Development
(cfs)
Q-out Post
Development
(cfs)
Elevation
(ft. msl)
1
2.96
7.1
30.56
0.60
437.09
2
3.57
11.7
43.06
0.60
438.41
5
4.47
19.4
62.55
1.92
439.57
10
5.18
26.1
78.46
7.05
439.69
25
6.13
35.7
100.15
22.95
439.93
100
7.67
51.93
135.82
43.78
440.17

Emergency/Peak Capacity:
• The low -point along the existing access road adjacent to the outlet structure has been surveyed
to be approximately 441.40' msl.
• This basin will be able to pass the 25yr-24hr event with over 12" of freeboard.
• The existing 54" RCP culvert will effectively pass the 100yr-24hr storm event, with 12" of
freeboard.
• The proposed 24" culvert diversion will pass the 25yr-24hr and larger storm events.
Conclusions:
• This proposed basin meets sizing requirements under the North Carolina Erosion and Sediment
Control Planning Manual.
• This basin's capacity is greatly oversized to provide additional treatment through traditional wet
detention settling.
• This area is currently draining to several existing rock dams and then discharging off -site. These
rock dams provide little attenuation to off -site peak flow discharges. This proposed pond will
reduce off -site flows from this drainage area and will be more in -line with historic pre -
development conditions.
• The skimmer outlet structure was chosen to be the most effective primary outlet since it will be
discharging water from the surface and allowing for properly designed drawdown times (3
days).
• Storm events through the 2yr-24hr storm will be routed 100% through the skimmer without
discharging over the overflow weir
• Storm events 5yr-24hr and above will discharge through the overflow weir at peak stage (for a
very short period).
Area 2: Upgraded Channel Diversion
Background:
The "Area 2" portion of the project will add additional drainage area to 3M's main stormwater basin
system and outfall. Approximately 18.47 acres of Luck Stone's aggregate processing area is planned to
be diverted to existing Basin 3 which will flow to existing Basin 2, ultimately to 3M's outfall 002. This
proposed diversion will eliminate the need for Rock Dam Q-3 and it will be removed.
Since additional stormwater is being designed to flow to 3M's existing Basin system, calculations were
done to verify the downstream BMPs are suitably designed for this additional 18.47 acres. Specifically,
Basin 2 and Basin 3 were analyzed, summary is below.
There is an old non-functioning diversion that is directly below the planned diversion at the bottom of
the slope that is thought to once serve this purpose, however it is unknown due to the age and
condition of the site.
The general design criteria for sizing (existing Basin 2):
• Drainage Area: 53.86 ac (Current drainage area = 35.39 ac, planned additional area = 18.47 ac)
• Sediment storage required: 1,800 cubic feet per acre = 96,948 cubic feet required

o Designed sediment storage:
■ Approximately 544,587 cubic feet provided above the inlet invert elevation
■ Conclusion: the designed basin storage conservatively exceeds requirement.
• Surface Area requirements: 435 square feet per cfs of Q10 peak inflow:
o Q10 inflow = 103.38 cfs
o Required surface area: (435) x (103.38) = 44,970 sf
■ Surface area of Basin 4 at 439.00' msl = 107,550 sf
■ Conclusion: the designed surface area conservatively meets requirement
Flow & Outlet Structure Summary (Basin 2):
General structure configuration:
• %" perforated holes (7 rows of 20 each) starting at low elevation 391.001, rows spaced at 6"
• Top of box structure, weir overflow at elevation 396.00'
• Emergency spillway at elevation 397.00'
• Top of embankment at elevation 400.00'
Flow summary table:
Storm (year) - 24
hour, type II
distribution
Precipitation
(inches)
Q-in Post
Development
(cfs)
Q-out Post
Development
(cfs)
Elevation
(ft. msl)
1
2.96
25.50
0.98
393.94
2
3.57
40.24
1.38
394.89
5
4.47
73.10
3.12
396.07
10
5.18
103.38
8.13
396.19
25
6.13
108.86
25.10
396.44
100
7.67
121.30
57.71
396.80
Emergency/Peak Capacity:
• The proposed diversion channel (upstream of Basin 3) will pass the 25yr-24hr storm.
• Basin 3 will pass the 25yr-24hr storm event with over 12" of freeboard, to Basin 2:
o Peak Elevation: 400.58'
o Top of embankment: 402.00
• Basin 2 will pass the 100yr-24hr event with a considerable amount of freeboard under normal
unrestricted flow conditions:
o 3.2 ft of freeboard
• Basin 2 was modeled with the outlet structure plugged, to verify the performance of the
emergency overflow spillway. If the main discharge piping becomes clogged or restricted, flows
out of the emergency overflow spillway will occur.
o Peak elevation (100yr-24hr): 397.70'
o Freeboard: 2.3 ft
o Peak flowrate: 47.30 cfs

Conclusions:
• The proposed diversion will adequately flow demands.
• Basin 3 is suitable for this additional drainage area and will pass the additional flow adequately.
• The existing Basin 2 meets sizing requirements under the North Carolina Erosion and Sediment
Control Planning Manual very conservatively.
• Basin 2 appears to have been designed to handle even more surface area than is currently or
planned to flow to it.
o Using the Q10 flowrate as a general guide for basin sizing, possibly up to double the
surface area could be routed to this pond. Additional evaluation should take place if
additional flow is to be directed here.
Area 3: Basin 5
Background:
Basin 5 is planned to take place of the existing "Rock Dam Q-9" via modification to this rock dam.
Essentially, the existing rock dam will be transformed into a skimmer sediment basin. Several areas will
be diverted into this basin via surface grading, or culverting. This will allow for removal of two existing
temporary Rock Dams and one silt trap.
Basin 5 is designed to meet the general design standards for a Sediment Basin in the Stormwater Design
Manual.
The general design criteria for sizing (Basin 5):
• Drainage Area: 16.75 ac
• Percent Impervious: 52%
• Sediment storage required: 1,800 cubic feet per acre = 30,150 cubic feet required
o Designed sediment storage:
■ Approximately 76,578 cubic feet provided above the inlet invert elevation
■ Additional sediment storage in permanent pool: 75,260 cubic feet
■ Conclusion: the designed basin storage conservatively exceeds requirement.
• Surface Area requirements: 435 square feet per cfs of Q10 peak inflow:
o Q10 inflow = 59.82 cfs
o Required surface area: (435) x (59.82) = 26,021 sf
■ Surface area of Basin 5 at 399.00' msl = 23,286 sf
■ Channel Extension at 399.00' msl = 3,200 sf
■ Forebay 1 surface area = 4,535 sf
■ Total Surface area = 31,021 sf
■ Conclusion: the designed surface area meets requirement
• Permanent Pool Depth: 5 feet, meets minimum depth of 2 feet.
• Length to Width ratio: approximately 2:1
• No baffles are included due to the permanent pool design. The permanent pool will provide the
same goals as the baffles.

Flow & Outlet Structure Summary:
See table in section 1, same parameters used for this basin.
The outlet structure is designed with a Faircloth Skimmer with an overflow riser and discharge pipe.
Skimmer sizing was completed using resources at Faircloth Skimmers (www.fairclothskimmer.com).
Skimmer Summary:
• Volume of water to treat: 76,578 cubic feet*
• Draw down time: 3 days
• Output:
o Skimmer size: 5"
o Orifice radius: 2.2"
o Orifice diameter: 4.5"
• 5" skimmer flow capacity: 32,832 cf/day = 0.38 CFS
*elevation 395.50 (permanent pool) to elevation 399.00 (top of box structure)
Flow summary table:
Storm (year) - 24
hour, type II
distribution
Precipitation
(inches)
Q-in Post
Development
(cfs)
Q-out Post
Development
(cfs)
Elevation
(ft. msl)
1
2.96
22.79
0.38
379.80
2
3.57
32.41
0.38
398.90
5
4.47
47.48
3.16
399.14
10
5.18
59.82
10.70
399.34
25
6.13
76.71
22.69
399.67
100
7.67
104.82
43.69
400.28
Emergency/Peak Capacity:
• The proposed outlet structure discharge pipe (24") will allow for flows up through the 10yr-24
hour storm event.
• This basin will be able to pass the 25yr-24hr event with over 12" of freeboard.
• The proposed 24" culvert from Rock Dam Q-13 will pass the 25yr-24hr event.
Conclusions:
• This proposed basin meets sizing requirements under the North Carolina Erosion and Sediment
Control Planning Manual.
• This basin's capacity is greatly oversized to provide additional treatment through traditional wet
detention settling.
• The skimmer outlet structure was chosen to be the most effective primary outlet since it will be
discharging water from the surface and allowing for properly designed drawdown times (3
days).
• Storm events through the 2yr-24hr storm will be routed 100% through the skimmer without
discharging over the overflow riser.

Storm events 5yr-24hr and above will discharge through the overflow riser at peak stage or the
emergency spillway (for short period).

4S-C
LS Ma'nt Area
4 R-A
24" C Ivert
4R-B
Channel 1 - culy to
forey
A
Forebay - old RD -
OF006
Channel 2A - forebay to
pond
Subcat Reach Pon Link
4S-B
LS Proces 3ing Area -
Direct o Pond
2F
Forebay - of RD - East
of ne pond
4R-D
Channel 2B - forebay to
pond 46
4S-A
LS Entry Area & Basin 4
- Direct to Pond
Basin 4 - skimmer
discharge
Basin 4
Pre -development

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 2
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 7.10 cfs @ 12.65 hrs, Volume= 1.271 af, Depth= 0.69"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
N
V
3
0
LL
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

MAN ON rdA ' O : 1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
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Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 11.55 cfs @ 11.97 hrs, Volume= 0.543 af, Depth= 0.93"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
0.529
82
Dirt roads, HSG B
0.562
82
Dirt roads, HSG B
0.459
98
Water Surface, HSG C
0.122
98
Water Surface, HSG C
5.295
71
Meadow, non -grazed, HSG C
6.967
75
Weighted Average
6.386
91.66% Pervious Area
0.581
8.34% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
0
3
0
LL
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
X
2 i >>sscrs
'
f
----------------------------
t
iYP !
---------r. -}---------.r...._.. W.-
f +, 24 r rainfall.=2. 9.�,,..,..
Syr
0
! i
9 `
' �.. nOffra=5.957 sac
_...__......_.(_.._._......
8
....._..�,._.._.....+......... ..........F.._.._.._.
j
._.._.._..(... _.._..._F_.._ _............ _ _ _ _...._.... _...._...... _ _ _ _. _
._.._..
I
j Runpff Volun e=0.543fof I
-� -
F- -- --------4---------
!
!
-�- -�-- ._.. ._....._ _ _.._.
i u o De.93
R f Depth
—!
r ......
- ,-------
r r , ._....._....._ ..., .... ._.....
'UZ
--_!
M
5 ''
I
( i i I i i i
I i I i i I I .I
! i
4- i
t
i
—
3
i I
,
i---------
2
i
—i — ....
r— — —� — i — — —�—
; i
— — i — — r — —�— — —i — t-------- ----------r r — — i — — —fi— — — i
1
0
0 5 10
15 20 25 30 35
40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 4
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 17.54 cfs @ 11.96 hrs, Volume= 0.811 af, Depth= 1.35"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
1
1
1
1
1
1
1
1
u
" 1
3
0
LL
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 5
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 7.28 cfs @ 12.35 hrs, Volume= 0.839 af, Depth= 1.28"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

MAN ON r,A ' O : 1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 6
Subcatchment 4S-C: LS Maint Area
w
0
LL
Hydrograph
— r — —.
— — -- — — ...........................
--
-r-
728cfs----:
7
--+------�----�-------i-------}-------}---�---- a-1T-
Yp
-
��
----
—; -- ;-------; - ; - ; ----�yra r- infalt-=-
6
,
R4�noff Area=''.8#7
ac ;
____
un�e
O.g39
5
nOff ; o
of
4
i Flow Length=1,0$5'
I
3Iin
Tic=�7.9
M
--------
i i i i
-� ;---t---; -- -- - ---
i
2
1
--- i 1
t
0
0 5 10
15 20 25 30 35 40 45 50 55 60 85 70 75 80
85 90
95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 7
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.28" for lyr-24hr event
Inflow = 7.28 cfs @ 12.35 hrs, Volume= 0.839 of
Outflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 10.51 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 4.16 fps, Avg. Travel Time= 0.6 min
Peak Storage= 98 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.54'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
In
3
0
LL
ds
• _ .
7.28
I
1 •
I
1
•
1 1
L=142 1
��
1 i •
/%iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
-------------
[ Inflow
❑ Outflow

PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 8
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.28" for lyr-24hr event
Inflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 of
Outflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.54 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 2.39 fps, Avg. Travel Time= 0.6 min
Peak Storage= 100 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.40'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
8
7
6
5
w
g 4
0
LL 3
2
Reach 4R-13: Channel 1 - culy to forebay
Hydrograph
�1
�!
Inflow,i
//
• Flow D' •
I/
• •
i • i
• •
I�
• i i •
■ Inflow
■ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 9
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.28" for lyr-24hr event
Inflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 of
Outflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.62 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.06 fps, Avg. Travel Time= 1.0 min
Peak Storage= 157 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.45'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
N
V
3
0
LL
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 10
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.28" for lyr-24hr event
Inflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 of
Outflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 10.54 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 3.80 fps, Avg. Travel Time= 0.1 min
Peak Storage= 14 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.27'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 '/'
Inlet Invert= 442.00', Outlet Invert= 435.00'
w
3
0
LL
forebay to pond
. .. ..
Inflow•
• Flow ® •
I /I
• • • •
%///////////////////////////////////////////////////////////////////�
■ Inflow
■ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 11
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.28" for lyr-24hr event
Inflow = 7.28 cfs @ 12.36 hrs, Volume= 0.839 of
Primary = 7.28 cfs @ 12.36 hrs, Volume= 0.839 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
N
3
0
LL
Pond 1 F: Forebay - old RD - OF006
Hydrograph
...................... --..... ..... -..--...-------- ..... ..... -..... ..... ..... -... ----. ----
$ 7.28 cfs
t-- - - a +-- --i- t - ....--------------
7.28 cfs i --- ' ...
i
,, - T a-
7 r
now, re ._ ac
I I I
I i I i i I I i I I i I i i
g � i
i i I
5
--------^....... ,---t---; ---r----t----i-----t---t----i---i----t-t----t---t----i----
4
3
- +.......---------- ---------- a ---- --- -t ------ a ---- --- ----- ------ ---- ---- E --- + -----
2
I i I i i I I I I i I i
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 12
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91% Impervious, Inflow Depth = 1.35" for 1yr-24hr event
Inflow = 17.54 cfs @ 11.96 hrs, Volume= 0.811 of
Primary = 17.54 cfs @ 11.96 hrs, Volume= 0.811 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
1
1
1
1
1
1
1
1
3
0
LL
Pond 2F: Forebay - old RD - East of new pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 13
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 1.19" for lyr-24hr event
Inflow = 30.56 cfs @ 11.96 hrs, Volume= 2.192 of
Outflow = 0.60 cfs @ 11.90 hrs, Volume= 2.192 af, Atten= 98%, Lag= 0.0 min
Primary = 0.60 cfs @ 11.90 hrs, Volume= 2.192 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 437.09' @ 21.04 hrs Surf.Area= 25,612 sf Storage= 68,481 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 1,177.3 min calculated for 2.192 of (100% of inflow)
Center -of -Mass det. time= 1,177.0 min ( 2,032.3 - 855.3 )
Volume Invert
Avail.Storage Storage Description
#1 434.00'
197,490 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
434.00
17,707
0 0
435.00
21,269
19,488 19,488
436.00
23,279
22,274 41,762
437.00
25,363
24,321 66,083
438.00
28,009
26,686 92,769
439.00
30,867
29,438 122,207
440.00
34,849
32,858 155,065
441.00
50,000
42,425 197,490
Device Routing
Invert
Outlet Devices
#1 Primary
433.55'
36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1
439.50'
24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1
434.00'
0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=0.60 cfs @ 11.90 hrs HW=434.59' (Free Discharge)
L1=Culvert (Passes 0.60 cfs of 7.54 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)
Flow/Skimmer (Constant Controls 0.60 cfs)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 14
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
i i i i
34
30.56 cfs
—+ — —� — — — — — — {------- — —
------- --- ----- --- ----
32
30 ����������
26 i l i l l l eak...-..Lies 43:0�'
... . -- - -�- -- -- - -- ... .
26 i i
i i i
---- +-{-----�----�------,-----�------�-----t------ ;----, forage=C8;4B1-icf
24 i i i i i i i
22 i
i i i i i
20 i I
I I I I I I I_ I__ I
i I I i I I I I i I I i
18
16
14
12
10
8
6 I I I
......... ................... ................................
4 f'
2 0.60 cfs
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 15
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 11.68 cfs @ 12.63 hrs, Volume= 1.931 af, Depth= 1.05"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
i I i I i i I i I i I i I I
13 i i i i i
12 i 11.68 cfs
I
---------- --------- --- 4--------- t---------- ---------; ? E + E
I aI'��pe -11-i 4 i Car
-------i---------1-------- �1 - ' 24lr 1ft1 109 il ea=2
RU
-------iI
- ----------i ---- -- ------ si alI
-- -
8 i i i i n , urne� ;a
-- - - --t- - ---t------- ------- ---...... - -- �----- - -- _ ..
7 i ; i i —I
--}- ..-}----i—t—�-- --F--a —r-u -° - ep h -� -
3 6
i
° -- -. - --} - -- - } - -�- - a-- �- -j-- Faw Length=' 543'
LL
i i i i i I
I I I I , I I
5 -
-I ........------------------------i i i i - - -T+�_ �� n
4 i I i i
=I-0.. i
i i i I
3 i
2 1 I I I I fi fi-- I I---1
-r—.............. . --1—--;
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 16
Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 16.92 cfs @ 11.96 hrs, Volume= 0.785 af, Depth= 1.35"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
0.529
82
Dirt roads, HSG B
0.562
82
Dirt roads, HSG B
0.459
98
Water Surface, HSG C
0.122
98
Water Surface, HSG C
5.295
71
Meadow, non -grazed, HSG C
6.967
75
Weighted Average
6.386
91.66% Pervious Area
0.581
8.34% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry, min toc
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
■ Runoff
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 17
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 23.86 cfs @ 11.96 hrs, Volume= 1.107 af, Depth= 1.84"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
1
1
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
I
r
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 18
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 10.17 cfs @ 12.35 hrs, Volume= 1.154 af, Depth= 1.77"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 19
z
w
6-
3 =
0
LL 5-
Subcatchment 4S-C: LS Maint Area
Hydrograph
---- - pan
�r5 —
—
---
----
----
----
i i
t
i i i I I i I I
�—
---- � --- � ---- � ---'------ — � --- Type
' 4-h_-r
-
_ 5' y4hr RaInf 11=3.--
--ri---- _. -I-I
aAre= .847 cR�nfI
'
Runoff ;Volume:1.154af 1
---------
--------
-----
--------------------
--------
----------1
un pep h=1.71
-
---
--
-----
-
-----
------r------;------ -- --
fqw erigth=130 5'
i i
i
i i i i I i i i
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 20
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.77" for 2yr-24hr event
Inflow = 10.17 cfs @ 12.35 hrs, Volume= 1.154 of
Outflow = 10.16 cfs @ 12.35 hrs, Volume= 1.154 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 11.55 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 4.47 fps, Avg. Travel Time= 0.5 min
Peak Storage= 125 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.65'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
I
N
V
3
0
LL
Reach 4R-A: 24" Culvert
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
C' Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 21
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.77" for 2yr-24hr event
Inflow = 10.16 cfs @ 12.35 hrs, Volume= 1.154 of
Outflow = 10.16 cfs @ 12.35 hrs, Volume= 1.154 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.21 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 2.57 fps, Avg. Travel Time= 0.6 min
Peak Storage= 126 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.48'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
I
0
N
V
3
0
LL
Reach 4R-B: Channel 1 - culy to forebay
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
n Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 22
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.77" for 2yr-24hr event
Inflow = 10.16 cfs @ 12.35 hrs, Volume= 1.154 of
Outflow = 10.16 cfs @ 12.36 hrs, Volume= 1.154 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.18 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.23 fps, Avg. Travel Time= 0.9 min
Peak Storage= 199 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.54'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
N
U
3
0
E
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
'
-----�----•- I
1 i-1
-
10.16cfs
( I I I I I ( I I
cs- - - I -
i - .....--..--...i _..._T r ....._ _..--._ ....-- __.....--..._..i_ ..._...._.. i__...__....--....-_
; ; nfloV1' A'=1..847 1c ..
10.16
0------- ......
..— -I— - ;-
I
�------� �_A�g�_..FI�v� .5►4'
9 --
- -- ---4------�- - _Depfih=
i
8
i i i i i
1 �MI ax i
I I 1! I I
VeI-- .-1$ -fs-
7
i
} t - t- t - - } - - t - - -+, - - - - - - 4- ....._.....11......_.....1L1.,_V_...1LJ._.......
I
i i 0.
I
5
I I I I I I I I i
i i i i i i i i _
+--+---{
4 ---.---i
/=� ��0�--cfs-t pae-
{i it.......... -_
3-
-------4----t------l----i---+-------- -- --- --- -- —---- --- --- +---------
2
--------- -}— -
1
0
0 5 10
15
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 23
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.77" for 2yr-24hr event
Inflow = 10.16 cfs @ 12.36 hrs, Volume= 1.154 of
Outflow = 10.16 cfs @ 12.36 hrs, Volume= 1.154 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 11.69 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.08 fps, Avg. Travel Time= 0.1 min
Peak Storage= 17 cf @ 12.36 hrs
Average Depth at Peak Storage= 0.33'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 '/'
Inlet Invert= 442.00', Outlet Invert= 435.00'
I
0
N
V
3
0
LL
Reach 4R-D: Channel 213 - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
n Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 24
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 1.77" for 2yr-24hr event
Inflow = 10.16 cfs @ 12.35 hrs, Volume= 1.154 of
Primary = 10.16 cfs @ 12.35 hrs, Volume= 1.154 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
w
3
0
LL
.... .
-------------
1
Ill
1
1
1 1 �1 1 •1 1 :1
•1
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 25
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91 % Impervious, Inflow Depth = 1.84" for 2yr-24hr event
Inflow = 23.86 cfs @ 11.96 hrs, Volume= 1.107 of
Primary = 23.86 cfs @ 11.96 hrs, Volume= 1.107 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
w
3
O
LL
Pond 2F: Forebay - old RD - East of new pond
Hydrograph
26
' .---.---...--,- 23.86
'
23.86 ds
cfs------7'---_--)--..�----(--�--_—�--i'---_-_"i.--_---_—^'-_---_--_�-_---.---_.i'-_---_�—_--------------i--_--_---T-__---......
� � � � '
.---.........--.r--...
-.---.- -_---
I nil ow...Area=7:�-19-. aE .
22
.....
i i i i i i i
-- - - -*- - -20
i
I
I
i
I I I I i I i I i I I
i ;
:
18
i i i i i i i i
i
I __ _ ' I i
14
.....
--!------- +--------------- ------- -----;- - - - ----+------F - - - - - —F
i-
10
------...--.... ..
I I I I I i I i I I I i
+ - --------- i - + - - - �-------�- - - -------+------i------t------ i-------
.._....._....._..
i
I I --_--_-_I-_--_--_---_--__---_--_--..--------8 i _ -_---_ Fi --_--_-----_--_--_- _---_--`-_---_--_r _----- _ _ -_-- _ -- _--_- -- -iI -- _--_--
6-1
q'
---f -- — -- -- ------ -- -- -- -- -- -- -- -- --
2-
0
0 5 10 15
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 26
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 1.66" for 2yr-24hr event
Inflow = 43.06 cfs @ 11.96 hrs, Volume= 3.046 of
Outflow = 0.60 cfs @ 11.80 hrs, Volume= 3.046 af, Atten= 99%, Lag= 0.0 min
Primary = 0.60 cfs @ 11.80 hrs, Volume= 3.046 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 438.41' @ 24.04 hrs Surf.Area= 29,182 sf Storage= 104,500 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 1,680.6 min calculated for 3.046 of (100% of inflow)
Center -of -Mass det. time= 1,680.5 min ( 2,526.2 - 845.7 )
Volume Invert
Avail.Storage Storage Description
#1 434.00'
197,490 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
434.00
17,707
0 0
435.00
21,269
19,488 19,488
436.00
23,279
22,274 41,762
437.00
25,363
24,321 66,083
438.00
28,009
26,686 92,769
439.00
30,867
29,438 122,207
440.00
34,849
32,858 155,065
441.00
50,000
42,425 197,490
Device Routing
Invert
Outlet Devices
#1 Primary
433.55'
36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1
439.50'
24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1
434.00'
0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=0.60 cfs @ 11.80 hrs HW=434.56' (Free Discharge)
L1=Culvert (Passes 0.60 cfs of 7.09 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)
Flow/Skimmer (Constant Controls 0.60 cfs)

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 27
w
0
3
0
LL
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 28
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 19.41 cfs @ 12.60 hrs, Volume= 3.034 af, Depth= 1.65"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
N
V
3
0
LL
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

MAN ► rdA ' O : 1
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 29
Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 25.46 cfs @ 11.96 hrs, Volume= 1.177 af, Depth= 2.03"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
0.529 82 Dirt roads, HSG B
0.562 82 Dirt roads, HSG B
0.459 98 Water Surface, HSG C
0.122 98 Water Surface, HSG C
5.295 71 Meadow, non -grazed, HSG C
6.967 75 Weighted Average
6.386 91.66% Pervious Area
0.581 8.34% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
■ Runoff
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 30
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 33.51 cfs @ 11.96 hrs, Volume= 1.570 af, Depth= 2.61"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
3
-L
LL
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
36
34
32 i i r,
--------'--------- ------ '------r---------r---------r--------------------r---------r---------r----------r-- -r---------r-- r-------- . -
;I I = -----r-
30---------------- -------------------------------- ;I --------- ;--------�yr�24hr ga-�r-vf4t1-=4-47!!
28
28----------------!------ }--------------E--------F-------- + F-+- + ---
---ri
no raa=
---� -- ---! --t--a-R 26 ------�------------------------------- -
----�--- -- a
24- -------t' ---t i t - -! - it ri- a — lu-n-of-4%
22 ! !
20 RU
'
-- i —r- — --------i--- ' - -;— f 1
18 i i I- I--' i
-- - -}- - --+-- ------ t-----+------ r- ---4- - r- -,- - r— ; - +-- T.
16 i i ! ! j i i i i i ! i i �•
14
-- i- ---- --- -+ + - - - - -� - - i - - i --F------- -- --- --- i 4-- --- --- --+------ - - {
IN
12 --------- +----- .....
! ! ! - -i-.- i i i i
---------------- 4 ------ - --------
10
i
I ! I ! — I I I
8-_-_-_-L--_--.......-J. ------ ------- _-- L-_--_--1.-_-_--_I L_---_L------ -L-_-_---_--_--_-1---_-_-- .�------- ------
J._------L-------L-
I I I I I I I I I I I I I
6 i
-_-_-_-;------.......--t_--_-_;---_-_-'f'--_--_--'•-_--_-_---4--_--_--1-_---4_---_.7--_-_---4-_-_---;----_--_-.4----_-_--;--4-------F-------I--
4 i
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 k 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 31
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 14.64 cfs @ 12.34 hrs, Volume= 1.649 af, Depth= 2.52"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 32
Subcatchment 4S-C: LS Maint Area
Hydrograph
6 i
4.64 cfs
5 i � ' � i i i � �
4
"QTTT f i i i i i i i i p i
3 i—i Xr e r n --_-�,A - —i — ....... F-- r---i----- $ —7 •---i----, -r
2 i A
,
...................._.+._.._....r_.._..-...._.._..-;.._.._..-..-.._.._..F...._.._..4---.._.._--------._:.._Rrya
.84
Iunp Vo un{ie 4-1494f�
-- --- �—
I I t
9114 rill
— {
8-
4: r
7 i i i l i i i w =� 506.5
-_-_-i-_--_-�.-_--_-_ ------- _--
s f
7
..--_-{---_--4--------- --------- F---------- ---------- 4---_--_---b--_--_--_-4----_--_-a-
----------
4--_--_--_1-----
---
-- ---_-- ---_-- _l ... .......-
i I '
5 : i i i i i
i i I i
.._.._.I�.. I
4 i � 1177T �
:
1
OL ........
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 33
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 2.52" for 5yr-24hr event
Inflow = 14.64 cfs @ 12.34 hrs, Volume= 1.649 of
Outflow = 14.64 cfs @ 12.34 hrs, Volume= 1.649 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 12.77 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 4.81 fps, Avg. Travel Time= 0.5 min
Peak Storage= 163 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.79'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
1
1
1
1
1
1
N 1
3
0
LL
Reach 4R-A: 24" Culvert
Hydrograph
I
r, - i to-
•
I
•
I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 34
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 2.52" for 5yr-24hr event
Inflow = 14.64 cfs @ 12.34 hrs, Volume= 1.649 of
Outflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.01 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 2.80 fps, Avg. Travel Time= 0.5 min
Peak Storage= 164 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.58'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
Reach 4R-B: Channel 1 - culy to forebay
Hydrograph
■ Inflow
■ outflow
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 35
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 2.52" for 5yr-24hr event
Inflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 of
Outflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.85 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.42 fps, Avg. Travel Time= 0.8 min
Peak Storage= 258 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.65'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
■ Inflow
■ outflow
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 36
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 2.52" for 5yr-24hr event
Inflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 of
Outflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.05 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.46 fps, Avg. Travel Time= 0.1 min
Peak Storage= 22 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.40'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 7'
Inlet Invert= 442.00', Outlet Invert= 435.00'
Reach 4R-D: Channel 213 - forebay to pond
Hydrograph
■ Inflow
■ outflow
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 37
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 2.52" for 5yr-24hr event
Inflow = 14.64 cfs @ 12.35 hrs, Volume= 1.649 of
Primary = 14.64 cfs @ 12.35 hrs, Volume= 1.649 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
1
1
1
1
1
1
N 1
3
0
LL
'• • • -•. • • • 11.
. .. . .
I�
I�
I
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 38
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91% Impervious, Inflow Depth = 2.61" for 5yr-24hr event
Inflow = 33.51 cfs @ 11.96 hrs, Volume= 1.570 of
Primary = 33.51 cfs @ 11.96 hrs, Volume= 1.570 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
3
0
LL
Pond 2F: Forebay - old RD - East of new pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 39
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 2.39" for 5yr-24hr event
Inflow = 62.55 cfs @ 11.96 hrs, Volume= 4.396 of
Outflow = 1.92 cfs @ 16.20 hrs, Volume= 4.385 af, Atten= 97%, Lag= 254.6 min
Primary = 1.92 cfs @ 16.20 hrs, Volume= 4.385 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 439.57' @ 16.20 hrs Surf.Area= 33,120 sf Storage= 140,307 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 1,917.7 min calculated for 4.383 of (100% of inflow)
Center -of -Mass det. time= 1,917.4 min ( 2,752.5 - 835.1 )
Volume Invert
Avail.Storage Storage Description
#1 434.00'
197,490 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
434.00
17,707
0 0
435.00
21,269
19,488 19,488
436.00
23,279
22,274 41,762
437.00
25,363
24,321 66,083
438.00
28,009
26,686 92,769
439.00
30,867
29,438 122,207
440.00
34,849
32,858 155,065
441.00
50,000
42,425 197,490
Device Routing
Invert
Outlet Devices
#1 Primary
433.55'
36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1
439.50'
24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1
434.00'
0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=1.92 cfs @ 16.20 hrs HW=439.57' (Free Discharge)
L1=Culvert (Passes 1.92 cfs of 72.33 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Weir Controls 1.32 cfs @ 0.84 fps)
Flow/Skimmer (Constant Controls 0.60 cfs)

MAN ON r,A ' O : 1
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 40
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 41
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 26.10 cfs @ 12.58 hrs, Volume= 3.985 af, Depth= 2.17"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
w
3
0
LL
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
28 i
i i i i i i i
............--__ ...... 26.10 cfs--- -_--_-_'f._--_--_--.1'-_--_-^-_--_--_-1------- _-r------- T------- }_-_--_-f— ----- T----------- --------- ?------ _---
-_--_--_}-_-_-__-_-_--f'-_-_--"I--
26 i i i } i +I i i I t I I
24 i i i i l i l i i p i
22 I I i I I i i I i
20 I I OTOM AY021--_2-Zi 0c
18 unOff Yoh-urrie3.85iaf
R
-- -..... -- -- - ---- - - -- - -- --t— r — 7
16 -
------- i 41 —a i
:---------
14
i
12
-_--_---_-!_--_--..............._..-...---.-1_--_--_--i--_--_-_:--_--_--_-!-_--_--__:.---_--_---1.--_--_---:-.---_--_-.L---_--_--1--_--_--_;--.--_---_-L�i_--J--
10 i i iiC�` .fT.1R n
i ' ' i J �7
- - 1 f r - t t- --fi------- r ;---------t - - +; - - --C+ - - -
$ ; ;
- -L 1- - - -----------E------------------ ------- --- --L------ -------;------N = 0
a
6
i i i i i i
t + 1 t t---------I----------t ---------; t t +, t ± t fi--------1
4 i i i i i i
—}— .... I............. ..... .. —} - — —} — + —} -
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 42
Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 32.52 cfs @ 11.96 hrs, Volume= 1.507 af, Depth= 2.60"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
0.529
82
Dirt roads, HSG B
0.562
82
Dirt roads, HSG B
0.459
98
Water Surface, HSG C
0.122
98
Water Surface, HSG C
5.295
71
Meadow, non -grazed, HSG C
6.967
75
Weighted Average
6.386
91.66% Pervious Area
0.581
8.34% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
36
....... .....
! i !
... - - } - - + - - +------' +........... .:............
34
32_
..
32.52 cfs - ------- --_-_--r--_--_--ti-_--_-_;_-_--_-r-------------- t------ --_-_--Y-_-_--------------- 1----.---...--i.--_--_-_t-_-_-_;_-_-_�-_-- --
i i i ! tII i ! i i i
_...----' ----------------t---------+---------F-------�------F------+---------F-------------+---------�----------t-----
:/ e...1.1... 4
30
:
1 Qyr Zir Rainfall:1
26
- -- -----rt-------T------------------- - - - .....--...-....-Rtnoff Area=6.967 ac..
24
`J
! ! ! ! ! !
--t------ -----t - -+- -----t - -f- - - r - - t - - - .. a ..........................
I Runoff liolune=1.507 af" i
I i
;
22
! !
- - — - - - r - - r - - - ...--...- .. ...--...--.. - ...--...;-.....-......_......:....................................._:...-.....-..... { r - --r------ t------- - - - - - —'
20`
18
J
!
14
i i i i i i i i i i i i i
....... ..._ ........ ..... :.
12=
;
8 ;
64.
4 !..... ..... :-...--...--...--!..--...--...-...--...--...- ...--... ! ...--... .:..... ...... ..... ... -..... ..... -;.--... ...--.-!-... ...--...!... _!.--... ...--.;....
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 43
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 41.26 cfs @ 11.95 hrs, Volume= 1.949 af, Depth= 3.24"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 44
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 18.29 cfs @ 12.34 hrs, Volume= 2.057 af, Depth= 3.14"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

MAN ON r,A ' O : 1
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 45
Subcatchment 4S-C: LS Maint Area
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 46
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 3.14" for 10yr-24hr event
Inflow = 18.29 cfs @ 12.34 hrs, Volume= 2.057 of
Outflow = 18.28 cfs @ 12.34 hrs, Volume= 2.057 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.55 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 5.04 fps, Avg. Travel Time= 0.5 min
Peak Storage= 192 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.89'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
N
V
3
0
LL
Reach 4R-A: 24" Culvert
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
[ Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 47
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 3.14" for 10yr-24hr event
Inflow = 18.28 cfs @ 12.34 hrs, Volume= 2.057 of
Outflow = 18.28 cfs @ 12.34 hrs, Volume= 2.057 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.52 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 2.96 fps, Avg. Travel Time= 0.5 min
Peak Storage= 193 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.65'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
N
V
3
0
LL
Reach 4R-B: Channel 1 - culy to forebay
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 48
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 3.14" for 10yr-24hr event
Inflow = 18.28 cfs @ 12.34 hrs, Volume= 2.057 of
Outflow = 18.28 cfs @ 12.35 hrs, Volume= 2.057 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.28 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.55 fps, Avg. Travel Time= 0.8 min
Peak Storage= 304 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.73'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
N
V
3
0
LL
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 49
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 3.14" for 10yr-24hr event
Inflow = 18.28 cfs @ 12.35 hrs, Volume= 2.057 of
Outflow = 18.28 cfs @ 12.35 hrs, Volume= 2.057 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.93 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.70 fps, Avg. Travel Time= 0.1 min
Peak Storage= 26 cf @ 12.35 hrs
Average Depth at Peak Storage= 0.45'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 '/'
Inlet Invert= 442.00', Outlet Invert= 435.00'
N
V
3
0
LL
Reach 4R-D: Channel 213 - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 50
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 3.14" for 10yr-24hr event
Inflow = 18.28 cfs @ 12.34 hrs, Volume= 2.057 of
Primary = 18.28 cfs @ 12.34 hrs, Volume= 2.057 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
N
V
3
0
LL
Pond 1 F: Forebay - old RD - OF006
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 51
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91 % Impervious, Inflow Depth = 3.24" for 10yr-24hr event
Inflow = 41.26 cfs @ 11.95 hrs, Volume= 1.949 of
Primary = 41.26 cfs @ 11.95 hrs, Volume= 1.949 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
3
0
U.
Pond 2F: Forebay - old RD - East of new pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 52
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 3.00" for 10yr-24hr event
Inflow = 78.46 cfs @ 11.96 hrs, Volume= 5.513 of
Outflow = 7.05 cfs @ 13.23 hrs, Volume= 5.502 af, Atten= 91 %, Lag= 76.2 min
Primary = 7.05 cfs @ 13.23 hrs, Volume= 5.502 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 439.69' @ 13.23 hrs Surf.Area= 33,611 sf Storage= 144,424 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 1,551.1 min calculated for 5.502 of (100% of inflow)
Center -of -Mass det. time= 1,549.8 min ( 2,378.4 - 828.7 )
Volume Invert
Avail.Storage Storage Description
#1 434.00'
197,490 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
434.00
17,707
0 0
435.00
21,269
19,488 19,488
436.00
23,279
22,274 41,762
437.00
25,363
24,321 66,083
438.00
28,009
26,686 92,769
439.00
30,867
29,438 122,207
440.00
34,849
32,858 155,065
441.00
50,000
42,425 197,490
Device Routing
Invert
Outlet Devices
#1 Primary
433.55'
36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1
439.50'
24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1
434.00'
0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=7.05 cfs @ 13.23 hrs HW=439.69' (Free Discharge)
L1=Culvert (Passes 7.05 cfs of 73.31 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Weir Controls 6.45 cfs @ 1.42 fps)
Flow/Skimmer (Constant Controls 0.60 cfs)

MAN ON r,A ' O : 1
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 53
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 54
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 35.65 cfs @ 12.57 hrs, Volume= 5.340 af, Depth= 2.91"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
N
V
3
0
LL
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

MAN ► rdA ' O : 1
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 55
Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 42.25 cfs @ 11.96 hrs, Volume= 1.970 af, Depth= 3.39"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
0.529 82 Dirt roads, HSG B
0.562 82 Dirt roads, HSG B
0.459 98 Water Surface, HSG C
0.122 98 Water Surface, HSG C
5.295 71 Meadow, non -grazed, HSG C
6.967 75 Weighted Average
6.386 91.66% Pervious Area
0.581 8.34% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
■ Runoff
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 56
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 51.70 cfs @ 11.95 hrs, Volume= 2.471 af, Depth= 4.11"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
3
-L
LL
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
1 , I
55
i st.�o its
----- +--- ¢---------+- --- ---------- F------------------ +----------- ----------�---fig --� n
50 1
i i i � I 1
-
45 1 i i yr r a n =.
i i i i i i i i
40
35 i i i i R�r� �� jr� urns 2.01 of
i i i i i
30 I I I I I u " o pep1=4:'I" 1
l i l i l i i i l i l l
I 1 i � i � I� I I 1 � • I
20
I25
,
15 --------i iI ------------------iI i iI i -ti iI liI iI - i iI iI I - - -i
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 57
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 23.24 cfs @ 12.34 hrs, Volume= 2.617 af, Depth= 4.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

MAN ON r,A ' O : 1
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 58
Subcatchment 4S-C: LS Maint Area
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 59
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 4.00" for 25yr-24hr event
Inflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 of
Outflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.40 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 5.33 fps, Avg. Travel Time= 0.4 min
Peak Storage= 229 cf @ 12.34 hrs
Average Depth at Peak Storage= 1.02'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
N
V
3
0
LL
Reach 4R-A: 24" Culvert
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
C-' Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 60
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 4.00" for 25yr-24hr event
Inflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 of
Outflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 9.10 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 3.14 fps, Avg. Travel Time= 0.5 min
Peak Storage= 229 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.74'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
N
V
3
0
LL
Reach 4R-B: Channel 1 - culy to forebay
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 61
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 4.00" for 25yr-24hr event
Inflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 of
Outflow = 23.23 cfs @ 12.34 hrs, Volume= 2.617 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.77 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.72 fps, Avg. Travel Time= 0.7 min
Peak Storage= 362 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.82'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
N
V
3
0
LL
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 62
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 4.00" for 25yr-24hr event
Inflow = 23.23 cfs @ 12.34 hrs, Volume= 2.617 of
Outflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.93 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 5.00 fps, Avg. Travel Time= 0.1 min
Peak Storage= 31 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.51'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 '/'
Inlet Invert= 442.00', Outlet Invert= 435.00'
N
V
3
0
LL
Reach 4R-D: Channel 213 - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

MAN ON rdA ' • : 1
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 63
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 4.00" for 25yr-24hr event
Inflow = 23.24 cfs @ 12.34 hrs, Volume= 2.617 of
Primary = 23.24 cfs @ 12.34 hrs, Volume= 2.617 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
16-
10-
Pond 1 F: Forebay - old RD - OF006
Hydrograph
I//
(/I
I
/------------------------
Time (hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 64
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91 % Impervious, Inflow Depth = 4.11" for 25yr-24hr event
Inflow = 51.70 cfs @ 11.95 hrs, Volume= 2.471 of
Primary = 51.70 cfs @ 11.95 hrs, Volume= 2.471 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
.... .
C
------------
®
•
W.
a c
•
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 65
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 3.84" for 25yr-24hr event
Inflow = 100.16 cfs @ 11.96 hrs, Volume= 7.058 of
Outflow = 22.95 cfs @ 12.59 hrs, Volume= 7.046 af, Atten= 77%, Lag= 38.2 min
Primary = 22.95 cfs @ 12.59 hrs, Volume= 7.046 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 439.93' @ 12.59 hrs Surf.Area= 34,582 sf Storage= 152,734 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 1,222.8 min calculated for 7.046 of (100% of inflow)
Center -of -Mass det. time= 1,221.8 min ( 2,043.4 - 821.6 )
Volume
Invert Avail.Storage
Storage
Description
#1
434.00' 197,490 cf
Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation
Surf.Area Inc.Store
Cum.Store
(feet)
(sq-ft) (cubic -feet)
(cubic -feet)
434.00
17,707
0
0
435.00
21,269
19,488
19,488
436.00
23,279
22,274
41,762
437.00
25,363
24,321
66,083
438.00
28,009
26,686
92,769
439.00
30,867
29,438
122,207
440.00
34,849
32,858
155,065
441.00
50,000
42,425
197,490
Device Routing Invert Outlet Devices
#1 Primary 433.55' 36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1 439.50' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1 434.00' 0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=22.91 cfs @ 12.59 hrs HW=439.93' (Free Discharge)
L1=Culvert (Passes 22.91 cfs of 75.20 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Weir Controls 22.31 cfs @ 2.15 fps)
Flow/Skimmer (Constant Controls 0.60 cfs)

BASIN 4 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 66
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
■ Inflow
■ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 67
Summary for Subcatchment 4-pre: Basin 4 Pre -development
Runoff = 51.93 cfs @ 12.56 hrs, Volume= 7.678 af, Depth= 4.18"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
22.030 70 Woods, Good, HSG C
22.030 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
33.5
150
0.0130
0.07
Sheet Flow,
Woods: Light underbrush n= 0.400 P2= 3.54"
22.1
1,393
0.0440
1.05
Shallow Concentrated Flow,
Woodland Kv= 5.0 fps
55.6 1,543 Total
3
-L
LL
Subcatchment 4-pre: Basin 4 Pre -development
Hydrograph
55
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■ Runoff

MAN ON rdA ' O : 1
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 68
Summary for Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Runoff = 58.39 cfs @ 11.96 hrs, Volume= 2.755 af, Depth= 4.74"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
0.529
82
Dirt roads, HSG B
0.562
82
Dirt roads, HSG B
0.459
98
Water Surface, HSG C
0.122
98
Water Surface, HSG C
5.295
71
Meadow, non -grazed, HSG C
6.967
75
Weighted Average
6.386
91.66% Pervious Area
0.581
8.34% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
N
0,
3
0
E
Subcatchment 4S-A: LS Entry Area & Basin 4 - Direct to Pond
Hydrograph
65
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60
' S839 cfs
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50
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:
7 ac
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25
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15
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+ + - - - - +----------F-------a - - - - --+-------}--------
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-- - - r-- -�-- -i -- r-- ---- r-- r--
5
0
0 5 10
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 69
Summary for Subcatchment 4S-B: LS Processing Area - Direct to Pond
Runoff = 68.68 cfs @ 11.95 hrs, Volume= 3.337 af, Depth= 5.55"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
6.964 82 Dirt roads, HSG B (used B because of the larger stockpiles in the area)
0.189 77 Brush, Poor, HSG C
0.066 98 Water Surface, HSG C
7.219 82 Weighted Average
7.153 99.09% Pervious Area
0.066 0.91 % Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, min toc
Subcatchment 4S-B: LS Processing Area - Direct to Pond
Hydrograph
I i i i i i I
70
i ! 68.68 cfs
t !
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off /`' lief. 07..21.9.--a.C--'
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35
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15
i
10
5
'
0
0 5 10
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 70
Summary for Subcatchment 4S-C: LS Maint Area
Runoff = 31.37 cfs @ 12.33 hrs, Volume= 3.552 af, Depth= 5.43"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
2.137
76 Woods/grass comb., Fair, HSG C
0.349
76 Woods/grass comb., Fair,
HSG C
0.078
98 Roofs
0.060
98 Roofs
0.120
98 Roofs
0.032
98 Roofs
0.018
98 Roofs
5.053
82 Dirt roads, HSG C
7.847
81 Weighted Average
7.539
96.07% Pervious Area
0.308
3.93% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
31.7
150 0.0150 0.08
Sheet Flow, woods
Woods: Light underbrush n= 0.400 P2= 3.54"
1.4
60 0.0208 0.72
Shallow Concentrated Flow, woods
Woodland Kv= 5.0 fps
1.8
220 0.0160 2.04
Shallow Concentrated Flow, agg area to ditch
Unpaved Kv= 16.1 fps
3.0
635 0.0470 3.49
Shallow Concentrated Flow, side of road ditch
Unpaved Kv= 16.1 fps
37.9 1,065 Total

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 71
Subcatchment 4S-C: LS Maint Area
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 72
Summary for Reach 4R-A: 24" Culvert
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 5.43" for 100yr-24hr event
Inflow = 31.37 cfs @ 12.33 hrs, Volume= 3.552 of
Outflow = 31.36 cfs @ 12.33 hrs, Volume= 3.552 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 15.44 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 5.74 fps, Avg. Travel Time= 0.4 min
Peak Storage= 288 cf @ 12.33 hrs
Average Depth at Peak Storage= 1.23'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.87 cfs
24.0" Round Pipe
n= 0.011 Concrete pipe, straight & clean
Length= 142.0' Slope= 0.0282 '/'
Inlet Invert= 468.00', Outlet Invert= 464.00'
N
V
3
0
LL
Reach 4R-A: 24" Culvert
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
P Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 73
Summary for Reach 4R-13: Channel 1 - culv to forebay
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 5.43" for 100yr-24hr evenl
Inflow = 31.36 cfs @ 12.33 hrs, Volume= 3.552 of
Outflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 9.86 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 3.42 fps, Avg. Travel Time= 0.4 min
Peak Storage= 285 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.86'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 188.65 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 89.8' Slope= 0.0891 T
Inlet Invert= 460.00', Outlet Invert= 452.00'
N
V
3
0
LL
Reach 4R-B: Channel 1 - culy to forebay
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 74
Summary for Reach 4R-C: Channel 2A - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 5.43" for 100yr-24hr evenl
Inflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 of
Outflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.42 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 2.95 fps, Avg. Travel Time= 0.7 min
Peak Storage= 450 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.95'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 152.02 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 121.0' Slope= 0.0579 '/'
Inlet Invert= 449.00', Outlet Invert= 442.00'
N
V
3
0
LL
Reach 4R-C: Channel 2A - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 75
Summary for Reach 4R-D: Channel 213 - forebay to pond
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 5.43" for 100yr-24hr evenl
Inflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 of
Outflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 16.24 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 5.43 fps, Avg. Travel Time= 0.1 min
Peak Storage= 38 cf @ 12.34 hrs
Average Depth at Peak Storage= 0.60'
Bank -Full Depth= 2.00' Flow Area= 12.0 sf, Capacity= 374.86 cfs
2.00' x 2.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 '/' Top Width= 10.00'
Length= 19.9' Slope= 0.3518 7'
Inlet Invert= 442.00', Outlet Invert= 435.00'
N
V
3
0
LL
Reach 4R-D: Channel 213 - forebay to pond
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 76
Summary for Pond 1 F: Forebay - old RD - OF006
Inflow Area = 7.847 ac, 3.93% Impervious, Inflow Depth = 5.43" for 100yr-24hr event
Inflow = 31.36 cfs @ 12.34 hrs, Volume= 3.552 of
Primary = 31.36 cfs @ 12.34 hrs, Volume= 3.552 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
'• • • -•. • • • 11.
. .. . .
(/I
I�
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 77
Summary for Pond 2F: Forebay - old RD - East of new pond
Inflow Area = 7.219 ac, 0.91 % Impervious, Inflow Depth = 5.55" for 100yr-24hr evenl
Inflow = 68.68 cfs @ 11.95 hrs, Volume= 3.337 of
Primary = 68.68 cfs @ 11.95 hrs, Volume= 3.337 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Pond 2F: Forebay - old RD - East of new pond
Hydrograph
75
68.68
i —
ds
70
— 68.68 ds
— — —
--j---_-mot
f1� v i- G j 7 211V dC.
65
..._....._..........a--.
..... ......... ..... ......
......... .... ... .........
!
..............-...._.__ ..._....._.....__i.. _ ._--.. ..._ _ .._....._. _..._-
F
60
---------'--.
I
_......------'+-------'�'-------+-------+-------
i i
-------*--- —----- F---------+---------_------''--------- +--------F-------+--------+---------T--------......
55
I
+---------a --- --------- + 1
i i I
i i !
-{---------- 4
I i i i i
! ! i i i i
50
t
-- — r r —r--r! --r..
45
I
i i i
I i I i I i i I i
!
40
35
- ...
.......-_--_.L---_-.L---.�---1-_--
! ! !
----._-----L---_--�.--_-J.--_----L--_-.L--_---_---1----_ ...
! ! ! ! !
30
25
20
15
10
5
0
0 5 10 15
20 25 30 35 40 45
50 55 60 65 70 75 80 85 90 95
Time
(hours)
❑ Inflow
❑ Primary

BASIN 4 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 78
Summary for Pond 4B: Basin 4 - skimmer discharge
Inflow Area = 22.033 ac, 4.33% Impervious, Inflow Depth = 5.25" for 100yr-24hr event
Inflow = 135.83 cfs @ 11.96 hrs, Volume= 9.644 of
Outflow = 43.79 cfs @ 12.37 hrs, Volume= 9.632 af, Atten= 68%, Lag= 25.0 min
Primary = 43.79 cfs @ 12.37 hrs, Volume= 9.632 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 440.17' @ 12.37 hrs Surf.Area= 37,448 sf Storage= 161,265 cf
Flood Elev= 441.00' Surf.Area= 50,000 sf Storage= 197,490 cf
Plug -Flow detention time= 905.2 min calculated for 9.632 of (100% of inflow)
Center -of -Mass det. time= 904.4 min ( 1,717.2 - 812.7 )
Volume Invert
Avail.Storage Storage Description
#1 434.00'
197,490 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
434.00
17,707
0 0
435.00
21,269
19,488 19,488
436.00
23,279
22,274 41,762
437.00
25,363
24,321 66,083
438.00
28,009
26,686 92,769
439.00
30,867
29,438 122,207
440.00
34,849
32,858 155,065
441.00
50,000
42,425 197,490
Device Routing
Invert
Outlet Devices
#1 Primary
433.55'
36.0" Round Culvert
L= 71.5' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 433.55' / 431.01' S= 0.0355 '/' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf
#2 Device 1
439.50'
24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#3 Device 1
434.00'
0.600 cfs Constant Flow/Skimmer Phase -In= 0.47'
Primary OutFlow Max=43.69 cfs @ 12.37 hrs HW=440.17' (Free Discharge)
L1=Culvert (Passes 43.69 cfs of 77.02 cfs potential flow)
�__3=Constant
2=Sharp-Crested Rectangular Weir (Weir Controls 43.09 cfs @ 2.68 fps)
Flow/Skimmer (Constant Controls 0.60 cfs)

MAN ON r,A ■ O : 1
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/11/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 79
Pond 4B: Basin 4 - skimmer discharge
Hydrograph
1
1
1 _
11
:1
1
.1
I,
1
1////////////////////////////////////
1 1 1 1 1 1 .1 1 :1 •1
❑ Inflow
❑ Primary

1S-B 1A-B
To Basin 1A Existing Bz sin 1A (low
lying gre qnspace)
1S-A 41R 1A-R
To Basin 1A Existing Basin 1 24" Pipe
Subcat Reach Pon Link
Pot d 3
2S-A
Direct to 2\
1 B-R\\\\YYY 26
36" Pipe 36" Pipe to 2P 2P
To Outfall 002
iC
LS area Pond 3
5R
Chan 8A-1
3A-R
Chant-2
3B-R
Chan 8A-3
Channel 8A-4

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 2
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 36.56 cfs @ 12.03 hrs, Volume= 2.131 af, Depth= 1.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 3
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 4
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 25.19 cfs @ 12.07 hrs, Volume= 1.640 af, Depth= 1.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 5
Subcatchment 1S-B: To Basin 1A
Hydrograph
28
-----t------------t-------'r-------t------'r------t-------t------- 1 --t- - - r
26 25 19 cfs I ! I i I i ( iType 11
( I
24
i
22 I ; L= .96"r }
r+ 4 r...Rainfall ..
1-1
1 1 1 1 1 1 1 1
20 I e =
t i F F -u -off eat .5 8_ c
18
1 1 Rklnb
Any
16 i 1 i 1 i 1 i i i i
-. - -- --
14
12 10
.LLLL2
c__- 4i
8
�`
IN=
----------j----- +-----
6 4
2 r
0
0 5 45 50 55 60 65 70 75 80 85 90 95
10 1� �O 25 30 35 40
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 6
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 13.48 cfs @ 11.96 hrs, Volume= 0.626 af, Depth= 1.55"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
15
14
I 13.cfs 48
-- -...
i i i i i
---+---------- - f---------}---------------------------L------- -- + a---------- f
13
!
i
i ! i ! I I ! 11 L�hr
fi
12
i
i 1 i i i yr+ n �i ' i
J'-r-
,
-_--_--L--_--.-
;
.-...--1.------ L------ - ---- ;L-_--_-1-_---_L_-_-.{�- /�-i �_n_- ! Q -J--
;of 'Y 0 M1,1 e i
g
4----------4--------- - -} - ' + ' - -+ - - -�' - ' ii a
I i I 1 u OOfae h-1.5
--� -
- �- ---- ------ - L------a------ ---� -- --
t- t-- - - --;
a
-
I
Q:--j
I 1 ; 1 1 I 1 � I
t 1 T
6
....._..._........
..._..L.......... i..................i.._.._.._........... L.......... .L.......... L.......... 1..._.._...L.._.._.._i......_.._. ..._.._..i.._..._.._i....__
5
i
-------------
i 1 i i i i i i 1 i i i
..._ _--_-_1---_-_--_--_-y.-_--_-_ _-_- _- I---------- --
-.�-_-_---..--.---.---_ - -
4
i I I
i i T 1
3
_{.............
I I F 1 L 1- L a !-_---_--_-� 5--_---_-- 1
...---r---------- ---------r .--------- r -------I - ------ r
2
i ( i
I ''///
60 65 70 75 80 85 90 95
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 7
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 14.11 cfs @ 12.07 hrs, Volume= 0.934 af, Depth= 1.78"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 8
w
0
U.
Subcatchment 3S-B: To Pond 3
Hydrograph
i i i i i
5
-----_-..<... 14.11 cfs ..- ---- ----- - ---- ----- ---- ------ ------.---. --- 'i-- -- -i'- — i- i- -I'- -I t- }'--
4 LT - i
3 i i ,l ----- t i Iil 'ii -- il ---- --------lyr$i4hfi - n
2--.---.----- -.--------------F---- --_--_--_- -------
_
Ii _....--f-----,-----,--E--,.--,---,---r------f----f------rs-auno,--------------
0 --
fi--
AU.
i i i ,i � f ep� A Ti — i
9 --------- -h-i 7
... -..... ..... .C7o
------- -..--t------------- +------- --------- t-------
i---------
------a---------�L7-w 083
_ ; i i i i I I
5 i i i
µ
4
i ' i - -------
----------
--------- -�-
3 I
_!_.._._..... 1........... _........ 1.......... i.......... l.......... i........... .._.._.._i....._.._.1..._.._..1.._.._.._i.......... 1..._.._..i.......... !---------
.......... i........... i..
2
.........-
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 9
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 29.67 cfs @ 12.18 hrs, Volume= 2.506 af, Depth= 1.63"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 10
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth > 1.20" for lyr-24hr event
Inflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 of
Outflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.63 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.19 fps, Avg. Travel Time= 2.3 min
Peak Storage= 303 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.91'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
f
E
N
U
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 11
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth > 1.20" for lyr-24hr event
Inflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 of
Outflow = 10.15 cfs @ 12.27 hrs, Volume= 2.421 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.32 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 0.90 fps, Avg. Travel Time= 1.4 min
Peak Storage= 176 cf @ 12.27 hrs
Average Depth at Peak Storage= 1.10'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 '/'
Inlet Invert= 391.68', Outlet Invert= 391.50'
9
8
7
N
6
3
° 5
LL
4
3
2
1
0
0
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 12
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth > 1.86" for lyr-24hr event
Inflow = 10.15 cfs @ 12.25 hrs, Volume= 2.123 of
Outflow = 10.15 cfs @ 12.26 hrs, Volume= 2.123 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 11.42 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.30 fps, Avg. Travel Time= 2.1 min
Peak Storage= 253 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.65'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
f
E
N
U
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 13
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.61 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 1.63 fps, Avg. Travel Time= 0.2 min
Peak Storage= 97 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.71'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 14
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 of
Outflow = 29.61 cfs @ 12.20 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.32 fps, Min. Travel Time= 0.8 min
Avg. Velocity = 1.26 fps, Avg. Travel Time= 2.6 min
Peak Storage= 1,351 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.88'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
32
30
28
26
24
22
20
18
c 16
LL 14
12
10
8
6
4
2
Reach 313-R: Channel 8A-3
Hydrograph
®
IIII IIIII�III IIIIIIII IIII III III�IIII IIIIII III
• • • ' • • ac
Avg. Flow Depth.=.0.88
I
Max Vel=4.32
I I! .e
•
I�
-K
05 10 15 20 25 30 35 40 45 50 55 60 65 70 75:1 •1
■ Inflow
0 Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 15
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.61 cfs @ 12.20 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.20 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 12.61 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 3.70 fps, Avg. Travel Time= 0.2 min
Peak Storage= 102 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.35'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 16
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.67 cfs @ 12.18 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.9 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.80 fps, Min. Travel Time= 1.2 min
Avg. Velocity = 1.63 fps, Avg. Travel Time= 4.2 min
Peak Storage= 2,088 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.76'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 '/' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 '/'
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
V
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 17
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 1.86" for lyr-24hr event
Inflow = 25.19 cfs @ 12.07 hrs, Volume= 1.640 of
Outflow = 0.51 cfs @ 18.11 hrs, Volume= 0.298 af, Atten= 98%, Lag= 362.3 min
Primary = 0.51 cfs @ 18.11 hrs, Volume= 0.298 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.09' @ 18.11 hrs Surf.Area= 22,925 sf Storage= 60,389 cf
Plug -Flow detention time= 576.8 min calculated for 0.298 of (18% of inflow)
Center -of -Mass det. time= 425.1 min ( 1,244.5 - 819.4 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=0.51 cfs @ 18.11 hrs HW=405.09' TW=392.86' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 0.51 cfs @ 0.95 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 18
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 19
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 1.86" for lyr-24hr event
Inflow = 36.56 cfs @ 12.03 hrs, Volume= 2.131 of
Outflow = 10.15 cfs @ 12.25 hrs, Volume= 2.123 af, Atten= 72%, Lag= 13.4 min
Primary = 10.15 cfs @ 12.25 hrs, Volume= 2.123 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.06' @ 12.25 hrs Surf.Area= 28,807 sf Storage= 92,242 cf (38,862 cf above start)
Plug -Flow detention time= 527.4 min calculated for 0.898 of (42% of inflow)
Center -of -Mass det. time= 145.1 min ( 961.3 - 816.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=10.14 cfs @ 12.25 hrs HW=404.06' TW=403.25' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 10.14 cfs @ 4.12 fps)

ATIRMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 20
Pond 1 B: Existing Basin 1
Hydrograph
■ Inflow
■ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 21
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 1.44" for lyr-24hr event
Inflow = 25.50 cfs @ 12.47 hrs, Volume= 6.483 of
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 394.38' @ 96.00 hrs Surf.Area= 2.125 ac Storage= 11.086 of (6.483 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= (not calculated: no outflow)
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 22
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=Orifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow
❑ Primary
❑ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 23
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 1.67" for 1yr-24hr event
Inflow
= 40.10 cfs @
12.15 hrs, Volume= 3.439 of
Outflow
= 15.10 cfs @
12.51 hrs, Volume= 3.436 af, Atten= 62%, Lag= 21.6 min
Primary
= 15.10 cfs @
12.51 hrs, Volume= 3.436 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
398.73' @ 12.51 hrs Surf.Area= 36,365 sf Storage= 75,811 cf (53,645 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage= 173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 224.0 min calculated for 2.926 of (85% of inflow)
Center -of -Mass det. time= 114.1 min ( 952.9 - 838.8 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2 (outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1 (inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
391.00
1,446
0 0
392.00
2,583
2,015 2,015
393.00
3,801
3,192 5,207
394.00
5,119
4,460 9,667
395.00
6,761
5,940 15,607
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
392.00
1,032
0 0
393.00
1,971
1,502 1,502
394.00
3,048
2,510 4,011
395.00
4,215
3,632 7,643
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
396.00
13,953
0 0
397.00
17,143
15,548 15,548
398.00
22,159
19,651 35,199
399.00
26,581
24,370 59,569
400.00
30,000
28,291 87,860
402.00
32,000
62,000 149,860
404.00
43,560
75,560 225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 24
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=15.06 cfs @ 12.51 hrs HW=398.73' TW=391.78' (Dynamic Tailwater)
L1=Culvert (Passes 15.06 cfs of 51.94 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.14 cfs @ 9.00 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 11.92 cfs @ 2.98 fps)
harp -Crested Rectangular Weir ( Controls 0.00 cfs)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 25
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 47.04 cfs @ 12.03 hrs, Volume= 2.769 af, Depth= 2.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 26
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 27
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 32.48 cfs @ 12.07 hrs, Volume= 2.131 af, Depth= 2.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 28
Subcatchment 1S-B: To Basin 1A
w
c+.
0
LL
Hydrograph
--
36 ---�------------;------i-----F------+------F------+------;------------'------1----4----�----'---f----�--
34 -- i 32.48 ds i
32
30 ! -- - -- -
r 11 yr+2aln
28 - - - - ...... )------------ )------- 4--4------- {------- i------- 4------- 4------ ------------*----- ------ {-------{ ------a -
26 _
24
! !ff
i RiunOff i o M. 2: 11:11 iaf
22 --- - ... t- -- --t- - - --r-- .. ------t-- -r-- --- t — -- -- r---'--- r-- y
20 ! ! ! !n
18
16 - - - ..... �- - - - - - - - --}------- ------ �-------i------ i--------— W— -e�
14
12 _-_--L--..... �_--_-_-_--_--_--_-__-_--_-L-_--_-1-_-_--_L_-_--_L-_-_--1-_-_---_-_--_- ------------ _-_-_-_1_-_-_--L---�
10
_....---4--------- i--- --—7.--_--_--_4_----------------;---_--_-}-----!--_- -
i
$
....--';.--------- ------.?'--_----'!.-----_--!'.---_--_--'?.--_--_--_i'------------ --_----{---------- ?----_--{_-_- --!._-_--_--'--_-
6 I I ! I ! ! I I I I I ! I ! ! I I I
4 !
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 29
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 17.86 cfs @ 11.96 hrs, Volume= 0.837 af, Depth= 2.08"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 30
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 18.35 cfs @ 12.07 hrs, Volume= 1.222 af, Depth= 2.33"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 31
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 32
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 39.44 cfs @ 12.17 hrs, Volume= 3.325 af, Depth= 2.16"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 33
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 1.75" for 2yr-24hr event
Inflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 af, Atten= 0%, Lag= 0.4 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.14 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.26 fps, Avg. Travel Time= 2.2 min
Peak Storage= 378 cf @ 12.25 hrs
Average Depth at Peak Storage= 1.07'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
1
1
1
1
1
1
N
U
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 34
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 1.75" for 2yr-24hr event
Inflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.70 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 0.95 fps, Avg. Travel Time= 1.3 min
Peak Storage= 221 cf @ 12.25 hrs
Average Depth at Peak Storage= 1.30'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
1
1
1
1
1
1
N
U
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 35
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 2.41" for 2yr-24hr event
Inflow = 13.82 cfs @ 12.24 hrs, Volume= 2.761 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 2.761 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 12.43 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.40 fps, Avg. Travel Time= 2.0 min
Peak Storage= 317 cf @ 12.25 hrs
Average Depth at Peak Storage= 0.77'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
1
1
1
1
1
1
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 36
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 of
Outflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.13 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 1.75 fps, Avg. Travel Time= 0.2 min
Peak Storage= 117 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.84'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
G outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 37
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 of
Outflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.72 fps, Min. Travel Time= 0.7 min
Avg. Velocity = 1.36 fps, Avg. Travel Time= 2.4 min
Peak Storage= 1,643 cf @ 12.20 hrs
Average Depth at Peak Storage= 1.03'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 38
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 of
Outflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.91 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 3.97 fps, Avg. Travel Time= 0.2 min
Peak Storage= 122 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.41'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ outnow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 39
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.44 cfs @ 12.17 hrs, Volume= 3.325 of
Outflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.8 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.38 fps, Min. Travel Time= 1.1 min
Avg. Velocity = 1.75 fps, Avg. Travel Time= 3.9 min
Peak Storage= 2,521 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.89'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 40
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 2.42" for 2yr-24hr event
Inflow = 32.48 cfs @ 12.07 hrs, Volume= 2.131 of
Outflow = 1.72 cfs @ 13.61 hrs, Volume= 0.789 af, Atten= 95%, Lag= 92.6 min
Primary = 1.72 cfs @ 13.61 hrs, Volume= 0.789 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.19' @ 13.61 hrs Surf.Area= 23,458 sf Storage= 62,836 cf
Plug -Flow detention time= 359.5 min calculated for 0.789 of (37% of inflow)
Center -of -Mass det. time= 235.7 min ( 1,047.7 - 812.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=1.72 cfs @ 13.61 hrs HW=405.19' TW=393.26' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 1.72 cfs @ 1.43 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 41
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 42
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 2.42" for 2yr-24hr event
Inflow = 47.04 cfs @ 12.03 hrs, Volume= 2.769 of
Outflow = 13.82 cfs @ 12.24 hrs, Volume= 2.761 af, Atten= 71 %, Lag= 12.7 min
Primary = 13.82 cfs @ 12.24 hrs, Volume= 2.761 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.42' @ 12.24 hrs Surf.Area= 29,930 sf Storage= 102,839 cf (49,460 cf above start)
Plug -Flow detention time= 393.5 min calculated for 1.536 of (55% of inflow)
Center -of -Mass det. time= 128.4 min ( 937.2 - 808.7 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=13.81 cfs @ 12.24 hrs HW=404.42' TW=403.37' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 13.81 cfs @ 4.60 fps)

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 43
Pond 1 B: Existing Basin 1
Hydrograph
u Inflow
O Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 44
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 1.98" for 2yr-24hr event
Inflow = 40.24 cfs @ 12.41 hrs, Volume= 8.909 of
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 395.48' @ 96.00 hrs Surf.Area= 2.270 ac Storage= 13.511 of (8.909 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= (not calculated: no outflow)
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 45
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=0 rifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
V
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
r' Outflow
❑ Primary
❑ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 46
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 2.20" for 2yr-24hr event
Inflow
= 53.13 cfs @
12.15 hrs, Volume=
4.546 of
Outflow
= 25.41 cfs @
12.43 hrs, Volume=
4.522 af, Atten= 52%, Lag= 17.0 min
Primary
= 25.41 cfs @
12.43 hrs, Volume=
4.522 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.16' @ 12.43 hrs Surf.Area= 38,120
sf Storage= 87,245 cf (65,079 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 186.7 min calculated for 4.011
of (88% of inflow)
Center -of -Mass det. time= 97.3
min ( 927.9 - 830.6 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 47
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=25.34 cfs @ 12.43 hrs HW=399.16' TW=392.07' (Dynamic Tailwater)
L1=Culvert (Passes 25.34 cfs of 56.56 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.33 cfs @ 9.54 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 22.01 cfs @ 3.67 fps)
harp -Crested Rectangular Weir ( Controls 0.00 cfs)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 48
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 62.56 cfs @ 12.03 hrs, Volume= 3.735 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 49
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 50
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 43.28 cfs @ 12.06 hrs, Volume= 2.874 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 51
Subcatchment 1S-B: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 52
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 24.45 cfs @ 11.95 hrs, Volume= 1.160 af, Depth= 2.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
1
1
Subcatchment 2S-A: Direct to 2P
Hydrograph
I
r
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 53
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 24.66 cfs @ 12.07 hrs, Volume= 1.659 af, Depth= 3.17"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 54
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 55
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 54.07 cfs @ 12.17 hrs, Volume= 4.579 af, Depth= 2.98"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
60
55
50
45
40
35
3 30
LL 25
20
15
10
5
0
0
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
i i
54.07 cfs
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5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 56
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 2.60" for 5yr-24hr event
Inflow = 24.77 cfs @ 12.40 hrs, Volume= 5.260 of
Outflow = 24.75 cfs @ 12.41 hrs, Volume= 5.260 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.17 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 1.34 fps, Avg. Travel Time= 2.1 min
Peak Storage= 580 cf @ 12.41 hrs
Average Depth at Peak Storage= 1.47'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
V
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 57
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 2.60" for 5yr-24hr event
Inflow = 24.75 cfs @ 12.41 hrs, Volume= 5.260 of
Outflow = 24.76 cfs @ 12.41 hrs, Volume= 5.260 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.42 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.01 fps, Avg. Travel Time= 1.2 min
Peak Storage= 343 cf @ 12.41 hrs
Average Depth at Peak Storage= 1.85'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
V
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 58
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.26" for 5yr-24hr event
Inflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 of
Outflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.26 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.54 fps, Avg. Travel Time= 1.9 min
Peak Storage= 378 cf @ 12.25 hrs
Average Depth at Peak Storage= 0.88'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
1
1
1
1
1
1
1
1
w 1
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 59
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.89 cfs @ 12.18 hrs, Volume= 4.579 of
Outflow = 53.90 cfs @ 12.18 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.75 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 1.91 fps, Avg. Travel Time= 0.2 min
Peak Storage= 146 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.00'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
Reach 3A-R: Channel ;.
.....
.1
I
1
1
0
1 1 1 1 �1 1 .1 1 :1 •1
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 60
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.90 cfs @ 12.18 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.18 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.48 fps, Avg. Travel Time= 2.2 min
Peak Storage= 2,050 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.23'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 61
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 15.49 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.31 fps, Avg. Travel Time= 0.2 min
Peak Storage= 151 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.50'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 62
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 54.07 cfs @ 12.17 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.18 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.7 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.06 fps, Min. Travel Time= 1.0 min
Avg. Velocity = 1.92 fps, Avg. Travel Time= 3.6 min
Peak Storage= 3,120 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.08'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 63
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 3.27" for 5yr-24hr event
Inflow = 43.28 cfs @ 12.06 hrs, Volume= 2.874 of
Outflow = 7.87 cfs @ 12.46 hrs, Volume= 1.532 af, Atten= 82%, Lag= 23.7 min
Primary = 7.87 cfs @ 12.46 hrs, Volume= 1.532 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.53' @ 12.46 hrs Surf.Area= 25,152 sf Storage= 70,994 cf
Plug -Flow detention time= 257.2 min calculated for 1.532 of (53% of inflow)
Center -of -Mass det. time= 145.6 min ( 949.1 - 803.5 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=7.85 cfs @ 12.46 hrs HW=405.53' TW=393.99' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 7.85 cfs @ 2.37 fps)

PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 64
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
■ Inflow
■ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 65
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.27" for 5yr-24hr event
Inflow = 62.56 cfs @ 12.03 hrs, Volume= 3.735 of
Outflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 af, Atten= 72%, Lag= 13.1 min
Primary = 17.60 cfs @ 12.25 hrs, Volume= 3.727 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.95' @ 12.25 hrs Surf.Area= 31,579 sf Storage= 119,146 cf (65,767 cf above start)
Plug -Flow detention time= 305.6 min calculated for 2.501 of (67% of inflow)
Center -of -Mass det. time= 114.1 min ( 914.3 - 800.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=17.60 cfs @ 12.25 hrs HW=404.95' TW=403.48' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 17.60 cfs @ 5.60 fps)

PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 66
Pond 1 B: Existing Basin 1
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 67
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 2.74" for 5yr-24hr event
Inflow = 73.10 cfs @ 12.36 hrs, Volume= 12.320 of
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 396.93' @ 96.00 hrs Surf.Area= 2.459 ac Storage= 16.922 of (12.320 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= (not calculated: no outflow)
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 68
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=0 rifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 69
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 3.02" for 5yr-24hr event
Inflow
= 72.73 cfs @
12.15 hrs, Volume=
6.238 of
Outflow
= 45.94 cfs @
12.36 hrs, Volume=
5.900 af, Atten= 37%, Lag= 12.6 min
Primary
= 45.94 cfs @
12.36 hrs, Volume=
5.900 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.70' @ 12.36 hrs Surf.Area= 39,946
sf Storage= 102,224 cf (80,058 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 161.2 min calculated for 5.391
of (86% of inflow)
Center -of -Mass det. time= 71.1
min ( 892.4 - 821.4 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 70
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=45.74 cfs @ 12.36 hrs HW=399.70' TW=392.52' (Dynamic Tailwater)
L1=Culvert (Passes 45.74 cfs of 61.79 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.55 cfs @ 10.17 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 36.52 cfs @ 4.38 fps)
harp -Crested Rectangular Weir (Weir Controls 5.67 cfs @ 1.45 fps)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 71
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 74.78 cfs @ 12.03 hrs, Volume= 4.511 af, Depth= 3.94"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 7' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 72
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 73
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 51.79 cfs @ 12.06 hrs, Volume= 3.470 af, Depth= 3.94"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 74
55
50
45
40
35
30
0
LL 25
20
15
10
5
0
Subcatchment 1S-B: To Basin 1A
Hydrograph
i i
i
,
i
-------i-------a--
i i
51.79 ds
i
1---------- +i ------------------
----------11----------
Gi ----------ii ----------Li
-----i -------- ---------
Ii
r
i
i
VP
._
...... -----------
------
----------i--------
------- a
i —1— -- G� —
PYr1 4 i r
— —
an
—
TF=1
a
uof
-
c
O�UM-1
�.o
,3. TO
of
_ _.._._....
i
i..........j_.._.._..1...................l._.._..__
; I
I
...........1.._.._.._
i ;
....._.._...._.._.. -.;-....._.....--.
i i u 110
... .
U e p
i
_h...-_�-. 9
L H..J..
qHj
engt
_4.V
nj"'
i
91
,
---------
-� ------
-- `
I
------+- - -
i
+ - - +
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 75
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 29.68 cfs @ 11.95 hrs, Volume= 1.423 af, Depth= 3.53"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
G-
32
— +---a—�—+ —+—+-- —----+-----+-----+—
i t zssa
30 i i i ;. i
28 i i i_ ��
26 i 1 yr' 24 r anfl l .1 '
----------i------- y -- - �----------- -��--
24
.2-it
nn --_-_----- -_-1_--_-_- -L-_-_--_- A
22J--
------�--------4-------------'--f'-"__....._...i._...._"__...-{--------�------+-------F-- .�-. +.--.....- i--
20 i ' R n�ff/ofi.42:afi
----- -- .;-..--.--
�u
une
18 I I I I I "
t Iu�-o
I
—r —r- — --i — - --- i-----i-- - r
16
14 t
-------------}-------!--------}--------- - - ?—�—�-{— --+ - —
12
..... i -..._--{ ------ }---------_-----I-_-----i-_----i -_--- i-_-_---i_-_--- i ?---_--. ........ _--_i— i —
10 ;
8 ------ ^------' - ' I - j I I I i I I I -i
I I I I I
6 } i i i i
,
4
..... ....... ......_........_.....__...__.___........... .......... .....__. .............. ...... ..... _ ............ ............... .............. ..... --.......... ....--...
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 76
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 29.64 cfs @ 12.07 hrs, Volume= 2.011 af, Depth= 3.84"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 77
Subcatchment 3S-B: To Pond 3
Hydrograph
32
29.64cfs
—
30
--
1
28
26
ih
99
i n i
24
! i !
TJ
22
-
;- — --f
! ! ! ! ! !
- -- -� - --IunpffourMe2:'I'C";a
20
18
i ; I i I i i i i
i i i ' '
16
!
I i
i i
i
i i
i i
14
12
.......--_-i_--_-_......
i
..............._-L--_".....
....._"1-_--_---.-i----------------- ---------------------t.---_--_--1--_--_--_-t-.---_--_-1---_--_--1---------------------- ---_--_--i--_---_--_
;
i I i I i i I rti
Jll A
.....-"1-_--_--_ f--_-_----_--_--_i--_--_--_" - L-_--_--1--_--_--_-i-.---_--_-1"-"_--_--1-_-_--1_-_--_- --_-" .— --_--_ _ aa" "-" " - .�..n.--J--
--i
i
t f---- t� i ! i
10
I —b Q i
8
._.._..._t------ .....
_.t._.._.....+.---------
1............ +..........---------- r...._.._..I.._.._.._.r.......... t..._.._..t.._.._.._,...... .... .".------------------...i_....._.............;......_....._.....__i._-...------- ..
6
4
— — ..."".....
------i--
' —T —�- —i- —t - - -- - —i -- '
i— t r i i-- -� i
2
.
0
0 5 10
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 78
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 65.71 cfs @ 12.17 hrs, Volume= 5.594 af, Depth= 3.64"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
N
3
0
LL
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
70
--_-- ... 65.71 cfs—t----t------f------F----------F------f------F----i------i --- i------t----------- .--...---.---_i--.---.---.-1------------- :.---.---.---.'--
65 ;
- ;--------+ --------- ------- ...--......-.... f-.... -..... -...-t....... Ty 1.1....2.4.-h.r..----
i:
60
-------t---- fi-----�----�---�--j--r----�----�----.�..Q-�r�24h�..�a1n#a11=1-�---..
55 i
--_--_----.-'`I_--_---_--1ii --_--_--'—I-_--_--_-Ii i--_--_--_-
r ----..R---..
. Ruboff. -...- ..A
1
50 -...-....--..-..-...-...--.;. -...- .....-..._................ a --------}---......}----r-
---------- fon45 nOYe=5 59Oaf
40
i i i i i i.u._o..ff.....De.p.h.....—...*...f 4.._..... a
35 } i I i i —
;_.._._.+._.._....+..................F.._.._.._.._.._.._.:F..._.._..+.._.._.._F...._.._.+....-_.... 1a.>�...j_e.nath_.3-3.p2_-...
i i I I i i i i
=r...
TIC
25 i i i i i Mi
- -------------- ..---..
CIN
20
861
_..i _
-------}-------------------L---------------------------------------
r
- --- -- -.-
15 ....-...------ — — -- T---------r -r-------- 1---------T-----------------r---------- ---------i
10
--
— ..... ...--...--...... -- + -- f --+ -- F — + --F +------} — — -------} — +--------} —
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 79
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 3.28" for 10yr-24hr event
Inflow = 35.84 cfs @ 12.31 hrs, Volume= 6.631 of
Outflow = 35.88 cfs @ 12.31 hrs, Volume= 6.631 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.82 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 1.39 fps, Avg. Travel Time= 2.0 min
Peak Storage= 770 cf @ 12.31 hrs
Average Depth at Peak Storage= 1.85'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
U
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 80
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 3.28" for 10yr-24hr event
Inflow = 35.88 cfs @ 12.31 hrs, Volume= 6.631 of
Outflow = 35.89 cfs @ 12.32 hrs, Volume= 6.631 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.05 fps, Avg. Travel Time= 1.2 min
Peak Storage= 472 cf @ 12.32 hrs
Average Depth at Peak Storage= 2.50'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 '/'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
U
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 81
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 20.09 cfs @ 12.25 hrs, Volume= 4.502 of
Outflow = 20.10 cfs @ 12.26 hrs, Volume= 4.502 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.73 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.63 fps, Avg. Travel Time= 1.8 min
Peak Storage= 417 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.95'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
U
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 82
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.50 cfs @ 12.18 hrs, Volume= 5.594 of
Outflow = 65.51 cfs @ 12.18 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.16 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.02 fps, Avg. Travel Time= 0.2 min
Peak Storage= 167 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.11'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
w
3
0
U.
Reach 3A-R: Channel 8A-2
Hydrograph
---.---_--:---.---.---.'----------'-------'L--------' ---------`------'--..-............................................-------' L---------1--------- "---------- ----------- !--------- ---------- 1--_--_---4-------------------..
i I I I I I I I
70 - -' 65.50Cfs - --� --� - --_.................._..................... - -- ------�--- - - - - - .....
65 ....---'.. cfs .._...'--_--_-- Arg
f� a7 �- . 6_11c-....t.
I I i I i I i
i
55 MiaxV
—A
50
+ t
—
45 i — +', i — — — — — +---------i----------i------— —�F�q� +.
40
35 -- i.... --i --i —4— — +— a-- —+ —---- ~------�---w-------- + --� — ....._.......
i I I I I A I�
30 — .......... ......i........... .}.-........
.�-..-..-...}..-..-..-}.._.._.._.�..-..-..-.{..._.._...�. _ _ _
25 ;
—� ... ...— �— a— i — —= — —----
20 i i i i i i i
15
— -- i—+— —i--{ — -- -- i--- --E-- i i 4 — +.
10
I I I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 83
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.51 cfs @ 12.18 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.49 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.57 fps, Avg. Travel Time= 2.1 min
Peak Storage= 2,353 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.37'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
Reach 313-R: Channel 8A-3
Hydrograph
---.-- .................. i _Li --------'Ii ---------1iI - I .....I ..-------Ii'"' --1Ii ._1Ii'
--------- "-_------..""
--..._.........5.51 csi-_-_--^-_-_-_i_-_-_-i_-_-_- ------....
70ii
655+--------- Lhfdw
- .ria
65 .
I I I i I
60 ; ; r Ajvg-: lo*--D Pth-
i
55 Miax!V
50
i
+
45 i — +, i — — — — — +--------- i---------- i------a- ----� +.
i i i i i i i i I I ;
40
35 — — i i — — i +-------- ------+ — ------------ ------ ------------- — — — -I— ------
i i i I I I I IA I I
30
1--- -- r---1---�-'
y/�_ i /�► 1y+���/�r
........ ... .......;...-.._..._.}._.._.....'_.._......t.._.._...}.._.._.._.1.._..-..----_-..-..�...._.._...�. V���V }/ V -2 . .. .._�
25
20
15
10 T t — — T T— —[— -- 1— — 7 — i-- —T i —•
I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 84
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 16.53 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.54 fps, Avg. Travel Time= 0.2 min
Peak Storage= 171 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.56'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
w
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
---.---_--:---.---.---.'--'--'---"-'-----'L--'--'--' --'--'---`------'--..-............................................-------' 1--------- "---------- ----------- !--------- ---------- 1--_--_---4------------------..
i I I I I I I I
70 65.50 cfs .......; f t t
6I5.50 cfs __-I i I i ---------IfJ wa7 1- 4 65
I
60 I I i i i i i i -A" : lo* ID P1�
55
.........;—
50
i I
45 + - - - - - +--------- i---------- i------
• V tiw
I
40 i �7
�--35 -- -- -- - ------- !-- ------ ?------ + -L------ I ------~------ 1------- �------ + -- --............
i I I I I 30
81
30
1..
{......_...-.}-..-..-..-..-..-...9 . � cfs25 apac;4
20 i i i
15
- -- ; —+— — -- — ----�------
10
I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 85
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.71 cfs @ 12.17 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.18 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.7 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.51 fps, Min. Travel Time= 0.9 min
Avg. Velocity = 2.03 fps, Avg. Travel Time= 3.4 min
Peak Storage= 3,564 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.21'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 '/' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 '/'
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
V
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 86
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 51.79 cfs @ 12.06 hrs, Volume= 3.470 of
Outflow = 15.87 cfs @ 12.32 hrs, Volume= 2.129 af, Atten= 69%, Lag= 15.3 min
Primary = 15.87 cfs @ 12.32 hrs, Volume= 2.129 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.84' @ 12.32 hrs Surf.Area= 26,735 sf Storage= 79,136 cf
Plug -Flow detention time= 222.5 min calculated for 2.129 of (61 % of inflow)
Center -of -Mass det. time= 117.5 min ( 915.7 - 798.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=15.76 cfs @ 12.32 hrs HW=405.84' TW=394.37' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 15.76 cfs @ 2.99 fps)

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 87
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 88
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 74.78 cfs @ 12.03 hrs, Volume= 4.511 of
Outflow = 20.09 cfs @ 12.25 hrs, Volume= 4.502 af, Atten= 73%, Lag= 13.6 min
Primary = 20.09 cfs @ 12.25 hrs, Volume= 4.502 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 405.36' @ 12.25 hrs Surf.Area= 32,887 sf Storage= 132,328 cf (78,948 cf above start)
Plug -Flow detention time= 272.5 min calculated for 3.277 of (73% of inflow)
Center -of -Mass det. time= 107.2 min ( 902.2 - 795.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=20.08 cfs @ 12.25 hrs HW=405.36' TW=403.55' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 20.08 cfs @ 6.39 fps)

MANUMMUMMOTCY1
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 89
Pond 1 B: Existing Basin 1
Hydrograph
■ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 90
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 3.40" for 10yr-24hr event
Inflow = 103.38 cfs @ 12.31 hrs, Volume= 15.278 of
Outflow = 4.24 cfs @ 19.88 hrs, Volume= 2.773 af, Atten= 96%, Lag= 454.1 min
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Secondary = 4.24 cfs @ 19.88 hrs, Volume= 2.773 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 397.14' @ 19.88 hrs Surf.Area= 2.487 ac Storage= 17.453 of (12.851 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 534.4 min ( 1,423.7 - 889.3 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 91
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=Orifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=4.24 cfs @ 19.88 hrs HW=397.14' (Free Discharge)
L4=Broad-Crested Rectangular Weir (Weir Controls 4.24 cfs @ 1.00 fps)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow
❑ Primary
❑ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 92
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 3.69" for 10yr-24hr event
Inflow
= 88.31 cfs @
12.14 hrs, Volume=
7.605 of
Outflow
= 64.22 cfs @
12.31 hrs, Volume=
7.223 af, Atten= 27%, Lag= 9.7 min
Primary
= 64.22 cfs @
12.31 hrs, Volume=
7.223 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.96' @ 12.31 hrs Surf.Area= 40,842
sf Storage= 109,933 cf (87,767 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 155.0 min calculated for 6.715
of (88% of inflow)
Center -of -Mass det. time= 73.8
min ( 889.5 - 815.6 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 93
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=64.19 cfs @ 12.31 hrs HW=399.96' TW=392.92' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 64.19 cfs @ 9.08 fps)
P4=S
=Orifice/Grate (Passes < 3.65 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 44.27 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 20.22 cfs potential flow)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 94
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 91.06 cfs @ 12.03 hrs, Volume= 5.559 af, Depth= 4.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 95
fl
Subcatchment 1S-A: To Basin 1A
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 96
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 63.14 cfs @ 12.06 hrs, Volume= 4.277 af, Depth= 4.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MANUMMUMMOTCY1
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 97
Subcatchment 1S-B: To Basin 1A
w
0
LL
Hydrograph
70 i 1
------..._ ........ t + t t F.. t F + + + t f -} + -t a
60 i i i i i i i i It-
-;4-----------
I --------- ?----- ------- ii ----------1--------- i --------aI -------- i
55 i--teain
--
?
--
, r
50 u o----------t------ ------
-,-- -c
45 i i i iRliln # Me14 7-7-Alf
lf
40
35
30 i i i I ! ( i
i I i i i i
-;-- ,--- ! ,--- ; ;-----;------;.......
------.--------�---'i----_- - rein 25 i i i i i i i i i i —
Ic !
.-..-----.}-..-._...._.4....._........................:....................i....-..-....+.._.._.._.i....._.._.+...-...----F..........-.;.......----.._.._...._..._.-._;_....._....._.....?....._....._....._i.-......_....
i
20 0=
;
15 i
10
i i i i i i i i i ! i !
5 r
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 98
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 36.69 cfs @ 11.95 hrs, Volume= 1.782 af, Depth= 4.43"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 99
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 36.29 cfs @ 12.07 hrs, Volume= 2.488 af, Depth= 4.75"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 100
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 101
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 81.32 cfs @ 12.17 hrs, Volume= 6.976 af, Depth= 4.53"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
3
a
LL
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
_ - ---•--•---------------•---- •---- - _ _ - - - - - - - _
I i i ! i � i I i I _I i !
90 } — — t t--------- + ------ F---------t F +---------t ?--------
I
------- ---------
+--------•-
85 St32 cs — .....
80 _ t ---
U-
I
75
70 i z;)yr� _
-r-...... ..... - - - -- - { - -- -�-- F--a-- - - -.
65
Ra-6o#`f Ate- =-1 i rt- —i- ,----,-- -- -
6o
55 i i I ; i i i i ! 1C Off iV � 11'1� 6.97
50 i -
-;—ie
-— -�- -_ --
-s--5..
45 T ------ ----- �---r------- ---r- - r -- -r- -r---- la-i---w-
40 4----t-------- ------ 4------- I------- ------ r-----t------ 2--
- -�
-- -
35 � i
r-- -i-- -! -- r ---- �� 7
30 ! i i
- ,
25
-------' ---..... ....-- ------------......... .......... ;....... ..... ..... -------- -----t-..._.....__..._...._.....__...---------.-....._.....__..._j..................?---------;-....._..� ._... __ ....
20
---fi---------4- ----- - - - - - - C - - - -j-- - -j - - - j - - r - - - t- - -
15 i i
---_-_- ------ -_--_- ------- -_-_----_-_--_-_-_-_t_-_-_-- -_-_-- --
-- -r- - -- -r-- -r-- ----
10a............... ...... ...... ..... ..... . µ —1 — - - — — —1- —= - —1— - —
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 102
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 4.19" for 25yr-24hr event
Inflow = 50.66 cfs @ 12.25 hrs, Volume= 8.486 of
Outflow = 50.65 cfs @ 12.26 hrs, Volume= 8.486 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.24 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 1.45 fps, Avg. Travel Time= 1.9 min
Peak Storage= 1,033 cf @ 12.26 hrs
Average Depth at Peak Storage= 2.44'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
0
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 103
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 4.19" for 25yr-24hr event
Inflow = 50.65 cfs @ 12.26 hrs, Volume= 8.486 of
Outflow = 35.65 cfs @ 12.10 hrs, Volume= 8.486 af, Atten= 30%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.09 fps, Avg. Travel Time= 1.1 min
Peak Storage= 530 cf @ 12.15 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
0
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 104
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 4.85" for 25yr-24hr event
Inflow = 22.83 cfs @ 12.25 hrs, Volume= 5.551 of
Outflow = 22.83 cfs @ 12.26 hrs, Volume= 5.551 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.18 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.75 fps, Avg. Travel Time= 1.7 min
Peak Storage= 459 cf @ 12.26 hrs
Average Depth at Peak Storage= 1.02'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
[ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 105
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.07 cfs @ 12.18 hrs, Volume= 6.976 of
Outflow = 81.08 cfs @ 12.18 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.63 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.16 fps, Avg. Travel Time= 0.1 min
Peak Storage= 194 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.25'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 106
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.08 cfs @ 12.18 hrs, Volume= 6.976 of
Outflow = 81.06 cfs @ 12.19 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.83 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.67 fps, Avg. Travel Time= 2.0 min
Peak Storage= 2,739 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.53'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 107
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.06 cfs @ 12.19 hrs, Volume= 6.976 of
Outflow = 81.07 cfs @ 12.19 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 17.73 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.82 fps, Avg. Travel Time= 0.1 min
Peak Storage= 198 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.63'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 108
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.32 cfs @ 12.17 hrs, Volume= 6.976 of
Outflow = 81.07 cfs @ 12.18 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.6 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.02 fps, Min. Travel Time= 0.9 min
Avg. Velocity = 2.17 fps, Avg. Travel Time= 3.1 min
Peak Storage= 4,127 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.37'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 '/' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 '/'
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
V
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 109
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 4.86" for 25yr-24hr event
Inflow = 63.14 cfs @ 12.06 hrs, Volume= 4.277 of
Outflow = 27.84 cfs @ 12.25 hrs, Volume= 2.935 af, Atten= 56%, Lag= 11.4 min
Primary = 27.84 cfs @ 12.25 hrs, Volume= 2.935 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 406.22' @ 12.25 hrs Surf.Area= 29,321 sf Storage= 89,788 cf
Plug -Flow detention time= 195.9 min calculated for 2.935 of (69% of inflow)
Center -of -Mass det. time= 98.1 min ( 890.5 - 792.5 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=27.79 cfs @ 12.25 hrs HW=406.22' TW=394.95' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 27.79 cfs @ 3.61 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 110
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 111
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 4.86" for 25yr-24hr event
Inflow = 91.06 cfs @ 12.03 hrs, Volume= 5.559 of
Outflow = 22.83 cfs @ 12.25 hrs, Volume= 5.551 af, Atten= 75%, Lag= 13.6 min
Primary = 22.83 cfs @ 12.25 hrs, Volume= 5.551 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 405.90' @ 12.26 hrs Surf.Area= 34,596 sf Storage= 150,301 cf (96,922 cf above start)
Plug -Flow detention time= 240.6 min calculated for 4.323 of (78% of inflow)
Center -of -Mass det. time= 101.3 min ( 890.5 - 789.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=22.82 cfs @ 12.25 hrs HW=405.89' TW=403.62' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 22.82 cfs @ 7.26 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 112
0
Pond 1 B: Existing Basin 1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 113
Summary for Pond 2B: 2P
Inflow Area
= 53.863 ac, 19.28% Impervious, Inflow Depth = 4.31" for 25yr-24hr event
Inflow
= 108.86 cfs @
12.32 hrs, Volume= 19.350 of
Outflow
= 12.87 cfs @
15.00 hrs, Volume= 6.846 af, Atten= 88%, Lag= 160.9 min
Primary
= 0.00 cfs @
0.00 hrs, Volume= 0.000 of
Secondary
= 12.87 cfs @
15.00 hrs, Volume= 6.846 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev=
397.29' @ 15.00 hrs Surf.Area= 2.507 ac Storage= 17.837 of (13.234 of above start)
Flood Elev=
400.00' Surf.Area=
2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention
time= 871.6 min calculated for 2.243 of (12% of inflow)
Center -of -Mass
det. time= 303.1
min ( 1,179.2 - 876.1 )
Volume
Invert Avail.Storage Storage Description
#1
388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(acres) (acre-feet)
(acre-feet)
388.00
1.345
0.000 0.000
389.00
1.471
1.408 1.408
390.00
1.600
1.536 2.943
391.00
1.718
1.659 4.603
392.00
1.833
1.775 6.378
393.00
1.955
1.894 8.272
394.00
2.077
2.016 10.288
395.00
2.204
2.140 12.428
396.00
2.340
2.272 14.701
397.00
2.469
2.404 17.105
398.00
2.599
2.534 19.639
399.00
2.732
2.665 22.304
400.00
2.869
2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 114
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=Orifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=12.87 cfs @ 15.00 hrs HW=397.29' (Free Discharge)
L4=Broad-Crested Rectangular Weir (Weir Controls 12.87 cfs @ 1.46 fps)
I
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
--1--t--1--t--t.--....................................................�............�..... t t - t----1-----------------------E------ ,
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow
❑ Primary
❑ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 115
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 4.59" for 25yr-24hr event
Inflow
= 109.21 cfs @
12.14 hrs, Volume=
9.464 of
Outflow
= 69.58 cfs @
12.34 hrs, Volume=
9.082 af, Atten= 36%, Lag= 12.0 min
Primary
= 69.58 cfs @
12.34 hrs, Volume=
9.082 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
400.58' @ 12.34 hrs Surf.Area= 41,555
sf Storage= 128,642 cf (106,477 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 135.7 min calculated for 8.573
of (91 % of inflow)
Center -of -Mass det. time= 66.0
min ( 875.4 - 809.3 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 116
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=69.54 cfs @ 12.34 hrs HW=400.57' TW=393.69' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 69.54 cfs @ 9.84 fps)
P4=S
=Orifice/Grate (Passes < 3.88 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 63.86 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 72.84 cfs potential flow)
I
Pond 3B: Pond 3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 117
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 116.94 cfs @ 12.02 hrs, Volume= 7.276 af, Depth= 6.36"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 7' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 118
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 119
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 81.41 cfs @ 12.06 hrs, Volume= 5.599 af, Depth= 6.36"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 120
w
0
LL
Subcatchment 1S-B: To Basin 1A
Hydrograph
—t —r — --1-- -- -- J --1-- 1-- —
90 ;
i I i i i i i i I i
85 81.41 cfs i i i i i i i
-- - —}- - -- - *— j ---- ---- ---- --- ---- -- - —
80
75
1 OOyr- 4hr Rainfall =7 67'
70
1 1 ; I I 1 I 'i� pp
65 i i -0 af ,-Rf- Are*7
60 - - __..... ;
_-4t------4-------------------r-------k------
,r- - -{r- -9lof V-�IUe99rC
55 i i i i
--- - t 1
r-- r-- r---'--- r--y
1 �i I50 1 i
------------- - --Ei ....!....... I Bn
--------------{------ -nano
i
45 i i i iF � i
--� -..... = -- L
W1 e — -
40 - - - - - - - i -- - - - - i -- - - -i- ----a ------ ---- a---------+..-------- + - - - -------- --
i
35 ------ 1-- ..... {- - - -- -- --- ----�---4---4--------------+-----?------- -- = `� • , - I
30 1 1
i
2520
i I t I i i i i i I I
15
i
10 --------------- `'-_--_-...------- ------- '--_-_--...---- --------------- '
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 121
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 48.02 cfs @ 11.95 hrs, Volume= 2.374 af, Depth= 5.90"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
50
i 48.02 cfs
i
i i i i i I 1+24-h
'
45
-------2hr
i
_
I 4, � Rhin#�I� 7'
40
35
--
j; `, ,
i i f 1 V r•
; I i is
u o olume 2. f
- r ---- --�-- 4}
30
;
; R naff Qep;th�5. O"
---------- = ------ -
-4--------- ;----------t-------------------}---------; -;----------I ----;---- ---- -
-m
25
�------� n--1--
i-- ,
iTC, 5.
20
i
I I I 5
i
--i --i —i i ---- — - --- --
15
i
10
iA..
i
5
0j
0 5
20 25 30 35 40 45 50 55 60 65 k 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 122
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 47.01 cfs @ 12.07 hrs, Volume= 3.271 af, Depth= 6.25"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 123
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 124
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 106.58 cfs @ 12.17 hrs, Volume= 9.251 af, Depth= 6.01"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
I
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 125
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 5.70" for 100yr-24hr event
Inflow = 72.62 cfs @ 12.21 hrs, Volume= 11.525 of
Outflow = 51.09 cfs @ 12.10 hrs, Volume= 11.525 af, Atten= 30%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.23 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 1.53 fps, Avg. Travel Time= 1.8 min
Peak Storage= 1,188 cf @ 12.10 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
V
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 126
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 5.70" for 100yr-24hr event
Inflow = 51.09 cfs @ 12.10 hrs, Volume= 11.525 of
Outflow = 35.40 cfs @ 12.05 hrs, Volume= 11.525 af, Atten= 31%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.15 fps, Avg. Travel Time= 1.1 min
Peak Storage= 530 cf @ 12.05 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
V
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
C-' Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 127
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 of
Outflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.67 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.91 fps, Avg. Travel Time= 1.6 min
Peak Storage= 511 cf @ 12.27 hrs
Average Depth at Peak Storage= 1.11'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 128
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.25 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.35 fps, Avg. Travel Time= 0.1 min
Peak Storage= 235 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.45'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
I
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 129
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.25 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.4 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.30 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.83 fps, Avg. Travel Time= 1.8 min
Peak Storage= 3,325 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.77'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
I
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 130
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.25 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.26 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 19.34 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 5.24 fps, Avg. Travel Time= 0.1 min
Peak Storage= 238 cf @ 12.18 hrs
Average Depth at Peak Storage= 0.73'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
I
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 131
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.58 cfs @ 12.17 hrs, Volume= 9.251 of
Outflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.6 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.71 fps, Min. Travel Time= 0.8 min
Avg. Velocity = 2.37 fps, Avg. Travel Time= 2.9 min
Peak Storage= 4,982 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.60'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
I
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 132
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 81.41 cfs @ 12.06 hrs, Volume= 5.599 of
Outflow = 46.48 cfs @ 12.21 hrs, Volume= 4.257 af, Atten= 43%, Lag= 8.8 min
Primary = 46.48 cfs @ 12.21 hrs, Volume= 4.257 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 406.72' @ 12.21 hrs Surf.Area= 33,309 sf Storage= 105,380 cf
Plug -Flow detention time= 169.5 min calculated for 4.255 of (76% of inflow)
Center -of -Mass det. time= 83.2 min ( 868.4 - 785.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=46.23 cfs @ 12.21 hrs HW=406.71' TW=395.52' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 46.23 cfs @ 4.28 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Pace 133
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
■ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 134
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 116.94 cfs @ 12.02 hrs, Volume= 7.276 of
Outflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 af, Atten= 78%, Lag= 14.9 min
Primary = 26.29 cfs @ 12.27 hrs, Volume= 7.268 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 406.73' @ 12.28 hrs Surf.Area= 37,300 sf Storage= 180,151 cf (126,772 cf above start)
Plug -Flow detention time= 212.9 min calculated for 6.040 of (83% of inflow)
Center -of -Mass det. time= 96.4 min ( 878.4 - 782.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=26.26 cfs @ 12.27 hrs HW=406.72' TW=403.71' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 26.26 cfs @ 8.36 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 135
1
1 • r
11
•1
:1
1
.1
1
1
1
1 1 1 1 �1 1 .1 1 :1 •1
■ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 136
Summary for Pond 2B: 2P
Inflow Area
= 53.863 ac, 19.28% Impervious, Inflow Depth = 5.80" for 100yr-24hr event
Inflow
= 121.30 cfs @
12.05 hrs, Volume= 26.039 of
Outflow
= 47.30 cfs @
13.99 hrs, Volume= 13.535 af, Atten= 61 %, Lag= 116.6 min
Primary
= 0.00 cfs @
0.00 hrs, Volume= 0.000 of
Secondary
= 47.30 cfs @
13.99 hrs, Volume= 13.535 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev=
397.70' @ 13.99 hrs Surf.Area= 2.561 ac Storage= 18.876 of (14.273 of above start)
Flood Elev=
400.00' Surf.Area=
2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention
time= 457.0 min calculated for 8.932 of (34% of inflow)
Center -of -Mass
det. time= 179.4 min ( 1,044.4 - 865.0 )
Volume
Invert Avail.Storage Storage Description
#1
388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(acres) (acre-feet)
(acre-feet)
388.00
1.345
0.000 0.000
389.00
1.471
1.408 1.408
390.00
1.600
1.536 2.943
391.00
1.718
1.659 4.603
392.00
1.833
1.775 6.378
393.00
1.955
1.894 8.272
394.00
2.077
2.016 10.288
395.00
2.204
2.140 12.428
396.00
2.340
2.272 14.701
397.00
2.469
2.404 17.105
398.00
2.599
2.534 19.639
399.00
2.732
2.665 22.304
400.00
2.869
2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 137
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=0 rifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=47.29 cfs @ 13.99 hrs HW=397.70' (Free Discharge)
L4= Broad -Crested Rectangular Weir (Weir Controls 47.29 cfs @ 2.24 fps)
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 138
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 6.07" for 100yr-24hr event
Inflow
= 143.04 cfs @
12.14 hrs, Volume=
12.523 of
Outflow
= 78.85 cfs @
12.38 hrs, Volume=
12.140 af, Atten= 45%, Lag= 14.3 min
Primary
= 78.85 cfs @
12.38 hrs, Volume=
12.140 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
401.77' @ 12.38 hrs Surf.Area= 42,743
sf Storage= 165,692 cf (143,526 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 114.5 min calculated for 11.626
of (93% of inflow)
Center -of -Mass det. time= 58.7
min ( 860.1 - 801.4 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 139
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=78.78 cfs @ 12.38 hrs HW=401.76' TW=394.73' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 78.78 cfs @ 11.15 fps)
P4=S
=Orifice/Grate (Passes < 4.29 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 104.78 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 221.89 cfs potential flow)
N
3
0
E
• • ' • •
. 0 oil
.1
i
1
1
I
11
.1
/I
I!
1
1
1
1 1 •1
1 •1
1 :1 •1
❑ Inflow
❑ Primary

2P
Subcat Reach Pon Link

BASIN 2 emergency spillway
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 2
Summary for Pond 2B: 2P
Inflow Area
= 53.863 ac, 19.28% Impervious, Inflow Depth = 5.80" for 100yr-24hr event
Inflow
= 121.30 cfs @
12.05 hrs, Volume= 26.039 of
Outflow
= 47.30 cfs @
13.99 hrs, Volume= 13.535 af, Atten= 61 %, Lag= 116.6 min
Primary
= 0.00 cfs @
0.00 hrs, Volume= 0.000 of
Secondary
= 47.30 cfs @
13.99 hrs, Volume= 13.535 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev=
397.70' @ 13.99 hrs Surf.Area= 2.561 ac Storage= 18.876 of (14.273 of above start)
Flood Elev=
400.00' Surf.Area=
2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention
time= 457.0 min calculated for 8.932 of (34% of inflow)
Center -of -Mass
det. time= 179.4 min ( 1,044.4 - 865.0 )
Volume
Invert Avail.Storage Storage Description
#1
388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(acres) (acre-feet)
(acre-feet)
388.00
1.345
0.000 0.000
389.00
1.471
1.408 1.408
390.00
1.600
1.536 2.943
391.00
1.718
1.659 4.603
392.00
1.833
1.775 6.378
393.00
1.955
1.894 8.272
394.00
2.077
2.016 10.288
395.00
2.204
2.140 12.428
396.00
2.340
2.272 14.701
397.00
2.469
2.404 17.105
398.00
2.599
2.534 19.639
399.00
2.732
2.665 22.304
400.00
2.869
2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert X 0.00
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 emergency spillway
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 3
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L1=Culvert ( Controls 0.00 cfs)
�2=0 rifi ce/G rate
( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=47.29 cfs @ 13.99 hrs HW=397.70' (Free Discharge)
L4= Broad -Crested Rectangular Weir (Weir Controls 47.29 cfs @ 2.24 fps)
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

1S-B 1A-B
To Basin 1A Existing Bz sin 1A (low
lying gre qnspace)
1S-A 41R 1A-R
To Basin 1A Existing Basin 1 24" Pipe
Subcat Reach Pon Link
Pot d 3
2S-A
Direct to 2\
1 B-R\\\\YYY 26
36" Pipe 36" Pipe to 2P 2P
To Outfall 002
iC
LS area Pond 3
5R
Chan 8A-1
3A-R
Chant-2
3B-R
Chan 8A-3
Channel 8A-4

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 2
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 36.56 cfs @ 12.03 hrs, Volume= 2.131 af, Depth= 1.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 3
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 4
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 25.19 cfs @ 12.07 hrs, Volume= 1.640 af, Depth= 1.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 5
Subcatchment 1S-B: To Basin 1A
Hydrograph
28
-----t------------t-------'r-------t------'r------t-------t------- 1 --t- - - r
26 25 19 cfs I ! I i I i ( iType 11
( I
24
i
22 I ; L= .96"r }
r+ 4 r...Rainfall ..
1-1
1 1 1 1 1 1 1 1
20 I e =
t i F F -u -off eat .5 8_ c
18
1 1 Rklnb
Any
16 i 1 i 1 i 1 i i i i
-. - -- --
14
12 10
.LLLL2
c__- 4i
8
�`
IN=
----------j----- +-----
6 4
2 r
0
0 5 45 50 55 60 65 70 75 80 85 90 95
10 1� �O 25 30 35 40
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 6
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 13.48 cfs @ 11.96 hrs, Volume= 0.626 af, Depth= 1.55"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
15
14
I 13.cfs 48
-- -...
i i i i i
---+---------- - f---------}---------------------------L------- -- + a---------- f
13
!
i
i ! i ! I I ! 11 L�hr
fi
12
i
i 1 i i i yr+ n �i ' i
J'-r-
,
-_--_--L--_--.-
;
.-...--1.------ L------ - ---- ;L-_--_-1-_---_L_-_-.{�- /�-i �_n_- ! Q -J--
;of 'Y 0 M1,1 e i
g
4----------4--------- - -} - ' + ' - -+ - - -�' - ' ii a
I i I 1 u OOfae h-1.5
--� -
- �- ---- ------ - L------a------ ---� -- --
t- t-- - - --;
a
-
I
Q:--j
I 1 ; 1 1 I 1 � I
t 1 T
6
....._..._........
..._..L.......... i..................i.._.._.._........... L.......... .L.......... L.......... 1..._.._...L.._.._.._i......_.._. ..._.._..i.._..._.._i....__
5
i
-------------
i 1 i i i i i i 1 i i i
..._ _--_-_1---_-_--_--_-y.-_--_-_ _-_- _- I---------- --
-.�-_-_---..--.---.---_ - -
4
i I I
i i T 1
3
_{.............
I I F 1 L 1- L a !-_---_--_-� 5--_---_-- 1
...---r---------- ---------r .--------- r -------I - ------ r
2
i ( i
I ''///
60 65 70 75 80 85 90 95
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 7
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 14.11 cfs @ 12.07 hrs, Volume= 0.934 af, Depth= 1.78"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 8
w
0
LL
Subcatchment 3S-B: To Pond 3
Hydrograph
i i i i i
` ......._... _ } ;----------t---------- ti--_--_--_-F --------- ----------- }--------- --- i
i
4.11 cfs
4 '` i
i i i�
3 '
2 -� i fir$- 4hfi a-:n ti 31 1 I
......._...-----.....__ ________._k--------- ------ I-------------4.----------F----------4-.----- _________-F-----. }.
1 I i ur�of i► a=2 ;- i7,6-
- —, —;--, u ,- —f -- --r-
0lu
--'
8 fi , [a1'1� i f ep� h—i .7
---f-------+----------------t----------------f-------a-------- ----i-------
7 ! ; ; ; ; qw _ert 1083' '
6 ; j i j i i i i {- I
1 1......
- - - --� -- - -- ---- - -� n
r - - t------r- - -t - - - - 1 I 1
5
µ
4 '----------i ' - ; ------ 1--------i---------------------------- ----- ------1------ --- - --- - t--
3..... _............
........ 1.._.._.._i.......... l._.._..__i...._.._..1.._.._.._i....._. _.T..._. _.i .................... 1..._.._..i.._..._.._._..._.._1_..._..__i........... i..
II I i I i
2
t-- t-- i --f— F—F-
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 9
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 29.67 cfs @ 12.18 hrs, Volume= 2.506 af, Depth= 1.63"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr lyr-24hr Rainfall=2.96"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
32
30
28
26
24
22
20
18
a 16
1L 14
12
10
8
6
4
2
0
0
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
- - - + - - —
- ....... ....... ........__.;...-----......__....._...:.........._..._... - ...._...................,......
} - - - -------------------a--
i
—
i 29.67 cfs
i j i i i
+------------- --1------ - i -} -} —
j-- -- I I I I
I
i
- --
�- -- -- '- --
i
}----------
I I
---------a
I I
---------- -------
i i i
-4---------+---------- F---------- I E 4 E F }
TYp
��
I
r
IV rt
--- -.....
- -- ------- t------ 4- --}-- -r - -t-- -r-- - 1� A
eO=4
-
niffo
unI1
Z.
mow„
,D6;a
--------------......
......--r•--------T-----------------------------•----------------- L---------------- --------Off
I•�G1"
---------}--- -...
i
j
}-------'r - r -- -' - - - -
i I I i i i i low
j
_
=�3
2'
I i
i I I
i I i i I '
-- - - - ---- -i - - -r-- -r-- --
--
r-- t--
I I .._.._.._.I._.._. _. i I i I I
;
;
---- . -i— �-- —� —� ---j — --{- —�
--1 -4—
--�
-
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 10
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth > 1.20" for lyr-24hr event
Inflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 of
Outflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.63 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.19 fps, Avg. Travel Time= 2.3 min
Peak Storage= 303 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.91'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
f
E
N
U
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 11
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth > 1.20" for lyr-24hr event
Inflow = 10.15 cfs @ 12.26 hrs, Volume= 2.421 of
Outflow = 10.15 cfs @ 12.27 hrs, Volume= 2.421 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.32 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 0.90 fps, Avg. Travel Time= 1.4 min
Peak Storage= 176 cf @ 12.27 hrs
Average Depth at Peak Storage= 1.10'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 '/'
Inlet Invert= 391.68', Outlet Invert= 391.50'
f
f
N
U
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 12
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth > 1.86" for lyr-24hr event
Inflow = 10.15 cfs @ 12.25 hrs, Volume= 2.123 of
Outflow = 10.15 cfs @ 12.26 hrs, Volume= 2.123 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 11.42 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.30 fps, Avg. Travel Time= 2.1 min
Peak Storage= 253 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.65'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
f
E
N
U
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 13
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.61 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 1.63 fps, Avg. Travel Time= 0.2 min
Peak Storage= 97 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.71'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 14
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 of
Outflow = 29.61 cfs @ 12.20 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.32 fps, Min. Travel Time= 0.8 min
Avg. Velocity = 1.26 fps, Avg. Travel Time= 2.6 min
Peak Storage= 1,351 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.88'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 15
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.61 cfs @ 12.20 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.20 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 12.61 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 3.70 fps, Avg. Travel Time= 0.2 min
Peak Storage= 102 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.35'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 16
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 1.63" for lyr-24hr event
Inflow = 29.67 cfs @ 12.18 hrs, Volume= 2.506 of
Outflow = 29.62 cfs @ 12.19 hrs, Volume= 2.506 af, Atten= 0%, Lag= 0.9 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.80 fps, Min. Travel Time= 1.2 min
Avg. Velocity = 1.63 fps, Avg. Travel Time= 4.2 min
Peak Storage= 2,088 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.76'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 17
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 1.86" for lyr-24hr event
Inflow = 25.19 cfs @ 12.07 hrs, Volume= 1.640 of
Outflow = 0.51 cfs @ 18.11 hrs, Volume= 0.298 af, Atten= 98%, Lag= 362.3 min
Primary = 0.51 cfs @ 18.11 hrs, Volume= 0.298 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.09' @ 18.11 hrs Surf.Area= 22,925 sf Storage= 60,389 cf
Plug -Flow detention time= 576.8 min calculated for 0.298 of (18% of inflow)
Center -of -Mass det. time= 425.1 min ( 1,244.5 - 819.4 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=0.51 cfs @ 18.11 hrs HW=405.09' TW=392.86' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 0.51 cfs @ 0.95 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 18
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 19
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 1.86" for lyr-24hr event
Inflow = 36.56 cfs @ 12.03 hrs, Volume= 2.131 of
Outflow = 10.15 cfs @ 12.25 hrs, Volume= 2.123 af, Atten= 72%, Lag= 13.4 min
Primary = 10.15 cfs @ 12.25 hrs, Volume= 2.123 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.06' @ 12.25 hrs Surf.Area= 28,807 sf Storage= 92,242 cf (38,862 cf above start)
Plug -Flow detention time= 527.4 min calculated for 0.898 of (42% of inflow)
Center -of -Mass det. time= 145.1 min ( 961.3 - 816.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=10.14 cfs @ 12.25 hrs HW=404.06' TW=403.25' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 10.14 cfs @ 4.12 fps)

ATIRMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 20
Pond 1 B: Existing Basin 1
Hydrograph
■ Inflow
■ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 21
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 1.44" for lyr-24hr event
Inflow = 25.50 cfs @ 12.47 hrs, Volume= 6.484 of
Outflow = 0.98 cfs @ 24.44 hrs, Volume= 4.208 af, Atten= 96%, Lag= 718.6 min
Primary = 0.98 cfs @ 24.44 hrs, Volume= 4.208 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 393.94' @ 24.44 hrs Surf.Area= 2.069 ac Storage= 10.156 of (5.553 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= (not calculated: initial storage exceeds outflow)
Center -of -Mass det. time= 1,893.0 min ( 2,850.6 - 957.6 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 22
Primary OutFlow Max=0.98 cfs @ 24.44 hrs HW=393.94' (Free Discharge)
L1=Culvert (Passes 0.98 cfs of 82.25 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 0.98 cfs @ 5.97 fps)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 23
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 1.67" for 1yr-24hr event
Inflow
= 40.10 cfs @
12.15 hrs, Volume= 3.439 of
Outflow
= 15.10 cfs @
12.51 hrs, Volume= 3.437 af, Atten= 62%, Lag= 21.6 min
Primary
= 15.10 cfs @
12.51 hrs, Volume= 3.437 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
398.73' @ 12.51 hrs Surf.Area= 36,365 sf Storage= 75,811 cf (53,645 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage= 173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 226.1 min calculated for 2.928 of (85% of inflow)
Center -of -Mass det. time= 114.3 min ( 953.2 - 838.8 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2 (outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1 (inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
391.00
1,446
0 0
392.00
2,583
2,015 2,015
393.00
3,801
3,192 5,207
394.00
5,119
4,460 9,667
395.00
6,761
5,940 15,607
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
392.00
1,032
0 0
393.00
1,971
1,502 1,502
394.00
3,048
2,510 4,011
395.00
4,215
3,632 7,643
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
396.00
13,953
0 0
397.00
17,143
15,548 15,548
398.00
22,159
19,651 35,199
399.00
26,581
24,370 59,569
400.00
30,000
28,291 87,860
402.00
32,000
62,000 149,860
404.00
43,560
75,560 225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 1 yr-24hr Rainfall=2.96"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 24
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=15.06 cfs @ 12.51 hrs HW=398.73' TW=391.77' (Dynamic Tailwater)
L1=Culvert (Passes 15.06 cfs of 51.94 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.14 cfs @ 9.00 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 11.92 cfs @ 2.98 fps)
harp -Crested Rectangular Weir ( Controls 0.00 cfs)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 25
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 47.04 cfs @ 12.03 hrs, Volume= 2.769 af, Depth= 2.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 26
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 27
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 32.48 cfs @ 12.07 hrs, Volume= 2.131 af, Depth= 2.42"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 28
Subcatchment 1S-B: To Basin 1A
w
c+.
0
LL
Hydrograph
--
36 ---�------------;------i-----F------+------F------+------;------------'------1----4----�----'---f----�--
34 -- i 32.48 ds i
32
30 ! -- - -- -
r 11 yr+2aln
28 - - - - ...... )------------ )------- 4--4------- {------- i------- 4------- 4------ ------------*----- ------ {-------{ ------a -
26 _
24
! !ff
i RiunOff i o M. 2: 11:11 iaf
22 --- - ... t- -- --t- - - --r-- .. ------t-- -r-- --- t — -- -- r---'--- r-- y
20 ! ! ! !n
18
16 - - - ..... �- - - - - - - - --}------- ------ �-------i------ i--------— W— -e�
14
12 _-_--L--..... �_--_-_-_--_--_--_-__-_--_-L-_--_-1-_-_--_L_-_--_L-_-_--1-_-_---_-_--_- ------------ _-_-_-_1_-_-_--L---�
10
_....---4--------- i--- --—7.--_--_--_4_----------------;---_--_-}-----!--_- -
i
$
....--';.--------- ------.?'--_----'!.-----_--!'.---_--_--'?.--_--_--_i'------------ --_----{---------- ?----_--{_-_- --!._-_--_--'--_-
6 I I ! I ! ! I I I I I ! I ! ! I I I
4 !
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 29
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 17.86 cfs @ 11.96 hrs, Volume= 0.837 af, Depth= 2.08"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 30
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 18.35 cfs @ 12.07 hrs, Volume= 1.222 af, Depth= 2.33"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 31
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 32
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 39.44 cfs @ 12.17 hrs, Volume= 3.325 af, Depth= 2.16"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 2yr-24hr Rainfall=3.57"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 33
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 1.75" for 2yr-24hr event
Inflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 af, Atten= 0%, Lag= 0.4 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.14 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.26 fps, Avg. Travel Time= 2.2 min
Peak Storage= 378 cf @ 12.25 hrs
Average Depth at Peak Storage= 1.07'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
1
1
1
1
1
1
N
U
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 34
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 1.75" for 2yr-24hr event
Inflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 3.550 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.70 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 0.95 fps, Avg. Travel Time= 1.3 min
Peak Storage= 221 cf @ 12.25 hrs
Average Depth at Peak Storage= 1.30'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
1
1
1
1
1
1
N
U
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 35
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 2.41" for 2yr-24hr event
Inflow = 13.82 cfs @ 12.24 hrs, Volume= 2.761 of
Outflow = 13.83 cfs @ 12.25 hrs, Volume= 2.761 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 12.43 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.40 fps, Avg. Travel Time= 2.0 min
Peak Storage= 317 cf @ 12.25 hrs
Average Depth at Peak Storage= 0.77'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
1
1
1
1
1
1
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 36
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 of
Outflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.13 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 1.75 fps, Avg. Travel Time= 0.2 min
Peak Storage= 117 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.84'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
G outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 37
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 of
Outflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 4.72 fps, Min. Travel Time= 0.7 min
Avg. Velocity = 1.36 fps, Avg. Travel Time= 2.4 min
Peak Storage= 1,643 cf @ 12.20 hrs
Average Depth at Peak Storage= 1.03'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
0 outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 38
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 of
Outflow = 39.30 cfs @ 12.20 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.91 fps, Min. Travel Time= 0.1 min
Avg. Velocity = 3.97 fps, Avg. Travel Time= 0.2 min
Peak Storage= 122 cf @ 12.20 hrs
Average Depth at Peak Storage= 0.41'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
G outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 39
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.16" for 2yr-24hr event
Inflow = 39.44 cfs @ 12.17 hrs, Volume= 3.325 of
Outflow = 39.31 cfs @ 12.19 hrs, Volume= 3.325 af, Atten= 0%, Lag= 0.8 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.38 fps, Min. Travel Time= 1.1 min
Avg. Velocity = 1.75 fps, Avg. Travel Time= 3.9 min
Peak Storage= 2,521 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.89'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 40
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 2.42" for 2yr-24hr event
Inflow = 32.48 cfs @ 12.07 hrs, Volume= 2.131 of
Outflow = 1.72 cfs @ 13.61 hrs, Volume= 0.789 af, Atten= 95%, Lag= 92.6 min
Primary = 1.72 cfs @ 13.61 hrs, Volume= 0.789 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.19' @ 13.61 hrs Surf.Area= 23,458 sf Storage= 62,836 cf
Plug -Flow detention time= 359.5 min calculated for 0.789 of (37% of inflow)
Center -of -Mass det. time= 235.7 min ( 1,047.7 - 812.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=1.72 cfs @ 13.61 hrs HW=405.19' TW=393.26' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 1.72 cfs @ 1.43 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 41
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 42
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 2.42" for 2yr-24hr event
Inflow = 47.04 cfs @ 12.03 hrs, Volume= 2.769 of
Outflow = 13.82 cfs @ 12.24 hrs, Volume= 2.761 af, Atten= 71 %, Lag= 12.7 min
Primary = 13.82 cfs @ 12.24 hrs, Volume= 2.761 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.42' @ 12.24 hrs Surf.Area= 29,930 sf Storage= 102,839 cf (49,460 cf above start)
Plug -Flow detention time= 393.5 min calculated for 1.536 of (55% of inflow)
Center -of -Mass det. time= 128.4 min ( 937.2 - 808.7 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=13.81 cfs @ 12.24 hrs HW=404.42' TW=403.37' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 13.81 cfs @ 4.60 fps)

MAIMOMMUMMOTCY1
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 43
Pond 1 B: Existing Basin 1
Hydrograph
u Inflow
O Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 44
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 1.99" for 2yr-24hr event
Inflow = 40.24 cfs @ 12.41 hrs, Volume= 8.930 of
Outflow = 1.38 cfs @ 24.77 hrs, Volume= 6.040 af, Atten= 97%, Lag= 741.9 min
Primary = 1.38 cfs @ 24.77 hrs, Volume= 6.040 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 394.89' @ 24.77 hrs Surf.Area= 2.190 ac Storage= 12.192 of (7.589 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= 4,055.4 min calculated for 1.438 of (16% of inflow)
Center -of -Mass det. time= 1,877.6 min ( 2,812.7 - 935.1 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 45
Primary OutFlow Max=1.38 cfs @ 24.77 hrs HW=394.89' (Free Discharge)
L1=Culvert (Passes 1.38 cfs of 112.77 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 1.38 cfs @ 7.23 fps)
3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 46
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 2.20" for 2yr-24hr event
Inflow
= 53.13 cfs @
12.15 hrs, Volume= 4.546 of
Outflow
= 25.41 cfs @
12.43 hrs, Volume= 4.544 af, Atten= 52%, Lag= 17.0 min
Primary
= 25.41 cfs @
12.43 hrs, Volume= 4.544 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.16' @ 12.43 hrs Surf.Area= 38,120 sf Storage= 87,245 cf (65,079 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage= 173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 192.7 min calculated for 4.035 of (89% of inflow)
Center -of -Mass det. time= 104.0 min ( 934.7 - 830.6 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2 (outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1 (inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
391.00
1,446
0 0
392.00
2,583
2,015 2,015
393.00
3,801
3,192 5,207
394.00
5,119
4,460 9,667
395.00
6,761
5,940 15,607
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
392.00
1,032
0 0
393.00
1,971
1,502 1,502
394.00
3,048
2,510 4,011
395.00
4,215
3,632 7,643
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
396.00
13,953
0 0
397.00
17,143
15,548 15,548
398.00
22,159
19,651 35,199
399.00
26,581
24,370 59,569
400.00
30,000
28,291 87,860
402.00
32,000
62,000 149,860
404.00
43,560
75,560 225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 2yr-24hr Rainfall=3.57"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 47
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=25.34 cfs @ 12.43 hrs HW=399.16' TW=392.06' (Dynamic Tailwater)
L1=Culvert (Passes 25.34 cfs of 56.56 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.33 cfs @ 9.54 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 22.01 cfs @ 3.67 fps)
harp -Crested Rectangular Weir ( Controls 0.00 cfs)
'• • '• RI
n
inflow
•1
1
I
1
I��
f %1 `
1
1 1 1
�1 1 •1 1 :1 •1
❑ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 48
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 62.56 cfs @ 12.03 hrs, Volume= 3.735 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 49
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 50
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 43.28 cfs @ 12.06 hrs, Volume= 2.874 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 51
Subcatchment 1S-B: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 52
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 24.45 cfs @ 11.95 hrs, Volume= 1.160 af, Depth= 2.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
3
0
LL
Subcatchment 2S-A: Direct to 2P
Hydrograph
1 ;
26
---
i 24.45 WS .---, . I i--,---.-
24
II 24hr
-- -± - -----t------ +-------t------- k------- t- -- I-------t------ F------ +------- i - +------
22 I �— Irsf 11- .4T
I ; ; ; ; ; ;
20 -! -- - ' ---- a4 �-2 110- $ 5
I- --; --�-- -;- --{-- -; - - �— f
18 i i ; ; i i
i
- -------------f --+- - - ---- - - -+- -F- D rr _/ ,�, cn .
16 i i i I i i i ino
14 i i ; i I i i i i T` i �h • v
- -.... -- - - i i------ --
12
nI
-_--_- i-_--_-_ _-_--_---_--_-y-_-_--_r_-_--_ r-_-_--;-_-_--y-_-_--_- ----_ -_--_' ----
10I I I C, _ 5 j
g
6 4 fI -----.-------.---'i�-.-------.-----.-tII ---.-..----'--.i'r.----'-------.------"-------'------ifI ----�i
---fI ----.---.-----.-y..-------"-t}ii
--.---.---.-----ti -----;i'r
.--_-----'�-
2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 53
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 24.66 cfs @ 12.07 hrs, Volume= 1.659 af, Depth= 3.17"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 54
26
24
22
20
18
.- 16
N
3 14
LL 12
10
8
6
4
2
0
Subcatchment 3S-B: To Pond 3
Hydrograph
I
•
• _i.
mom
•
Vol _
�_•
n6ff
Jul I
gal 'Us
I/
�i
i
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

MAIMOMMUMMOTMI
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 55
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 54.07 cfs @ 12.17 hrs, Volume= 4.579 af, Depth= 2.98"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 5yr-24hr Rainfall=4.47"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
60_
55_
50-
45-
40-
N 35-
3 30-
LL
25
-
20-
15-
10-
5-
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
I i
!
////////"!///////////////////////////////////////////////////////////////////////
60 65 70 75 80 85 9
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 56
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 2.60" for 5yr-24hr event
Inflow = 24.77 cfs @ 12.40 hrs, Volume= 5.260 of
Outflow = 24.75 cfs @ 12.41 hrs, Volume= 5.260 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.17 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 1.34 fps, Avg. Travel Time= 2.1 min
Peak Storage= 580 cf @ 12.41 hrs
Average Depth at Peak Storage= 1.47'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
V
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 57
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 2.60" for 5yr-24hr event
Inflow = 24.75 cfs @ 12.41 hrs, Volume= 5.260 of
Outflow = 24.76 cfs @ 12.41 hrs, Volume= 5.260 af, Atten= 0%, Lag= 0.1 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.42 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.01 fps, Avg. Travel Time= 1.2 min
Peak Storage= 343 cf @ 12.41 hrs
Average Depth at Peak Storage= 1.85'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
V
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 58
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.26" for 5yr-24hr event
Inflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 of
Outflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.26 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 2.54 fps, Avg. Travel Time= 1.9 min
Peak Storage= 378 cf @ 12.25 hrs
Average Depth at Peak Storage= 0.88'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
1
1
1
1
1
1
1
1
w 1
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 59
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.89 cfs @ 12.18 hrs, Volume= 4.579 of
Outflow = 53.90 cfs @ 12.18 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.75 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 1.91 fps, Avg. Travel Time= 0.2 min
Peak Storage= 146 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.00'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
r
I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
71
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 60
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.90 cfs @ 12.18 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.18 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.48 fps, Avg. Travel Time= 2.2 min
Peak Storage= 2,050 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.23'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
- '
-
I
III U • 1111
f
�
1
I
•
y
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 61
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.19 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 15.49 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.31 fps, Avg. Travel Time= 0.2 min
Peak Storage= 151 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.50'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 62
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 2.98" for 5yr-24hr event
Inflow = 54.07 cfs @ 12.17 hrs, Volume= 4.579 of
Outflow = 53.89 cfs @ 12.18 hrs, Volume= 4.579 af, Atten= 0%, Lag= 0.7 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.06 fps, Min. Travel Time= 1.0 min
Avg. Velocity = 1.92 fps, Avg. Travel Time= 3.6 min
Peak Storage= 3,120 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.08'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 63
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 3.27" for 5yr-24hr event
Inflow = 43.28 cfs @ 12.06 hrs, Volume= 2.874 of
Outflow = 7.87 cfs @ 12.46 hrs, Volume= 1.532 af, Atten= 82%, Lag= 23.7 min
Primary = 7.87 cfs @ 12.46 hrs, Volume= 1.532 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.53' @ 12.46 hrs Surf.Area= 25,152 sf Storage= 70,994 cf
Plug -Flow detention time= 257.2 min calculated for 1.532 of (53% of inflow)
Center -of -Mass det. time= 145.6 min ( 949.1 - 803.5 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=7.85 cfs @ 12.46 hrs HW=405.53' TW=393.99' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 7.85 cfs @ 2.37 fps)

PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 64
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
n 1 _
n rTMIi,
- 1
L Wii
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 65
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.27" for 5yr-24hr event
Inflow = 62.56 cfs @ 12.03 hrs, Volume= 3.735 of
Outflow = 17.60 cfs @ 12.25 hrs, Volume= 3.727 af, Atten= 72%, Lag= 13.1 min
Primary = 17.60 cfs @ 12.25 hrs, Volume= 3.727 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 404.95' @ 12.25 hrs Surf.Area= 31,579 sf Storage= 119,146 cf (65,767 cf above start)
Plug -Flow detention time= 305.6 min calculated for 2.501 of (67% of inflow)
Center -of -Mass det. time= 114.1 min ( 914.3 - 800.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=17.60 cfs @ 12.25 hrs HW=404.95' TW=403.48' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 17.60 cfs @ 5.60 fps)

PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 66
Pond 1 B: Existing Basin 1
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 67
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 2.82" for 5yr-24hr event
Inflow = 73.10 cfs @ 12.36 hrs, Volume= 12.654 of
Outflow = 3.12 cfs @ 24.03 hrs, Volume= 8.825 af, Atten= 96%, Lag= 700.1 min
Primary = 3.12 cfs @ 24.03 hrs, Volume= 8.825 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 396.07' @ 24.03 hrs Surf.Area= 2.349 ac Storage= 14.861 of (10.258 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= 3,279.8 min calculated for 4.220 of (33% of inflow)
Center -of -Mass det. time= 1,876.5 min ( 2,793.5 - 917.0 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 68
Primary OutFlow Max=3.12 cfs @ 24.03 hrs HW=396.07' (Free Discharge)
L1=Culvert (Passes 3.12 cfs of 139.50 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 1.71 cfs @ 8.97 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 1.40 cfs @ 0.85 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
U
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.4 7 "
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 69
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 3.02" for 5yr-24hr event
Inflow
= 72.73 cfs @
12.15 hrs, Volume= 6.238 of
Outflow
= 45.94 cfs @
12.36 hrs, Volume= 6.235 af, Atten= 37%, Lag= 12.6 min
Primary
= 45.94 cfs @
12.36 hrs, Volume= 6.235 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.70' @ 12.36 hrs Surf.Area= 39,946 sf Storage= 102,224 cf (80,058 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage= 173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 177.2 min calculated for 5.723 of (92% of inflow)
Center -of -Mass det. time= 108.5 min ( 929.9 - 821.4 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2 (outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1 (inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
391.00
1,446
0 0
392.00
2,583
2,015 2,015
393.00
3,801
3,192 5,207
394.00
5,119
4,460 9,667
395.00
6,761
5,940 15,607
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
392.00
1,032
0 0
393.00
1,971
1,502 1,502
394.00
3,048
2,510 4,011
395.00
4,215
3,632 7,643
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
396.00
13,953
0 0
397.00
17,143
15,548 15,548
398.00
22,159
19,651 35,199
399.00
26,581
24,370 59,569
400.00
30,000
28,291 87,860
402.00
32,000
62,000 149,860
404.00
43,560
75,560 225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 5yr-24hr Rainfall=4.47"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 70
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=45.74 cfs @ 12.36 hrs HW=399.70' TW=392.51' (Dynamic Tailwater)
L1=Culvert (Passes 45.74 cfs of 61.79 cfs potential flow)
P4=S
=Orifice/Grate (Orifice Controls 3.55 cfs @ 10.17 fps)
=Sharp -Crested Rectangular Weir (Weir Controls 36.52 cfs @ 4.38 fps)
harp -Crested Rectangular Weir (Weir Controls 5.67 cfs @ 1.45 fps)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 71
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 74.78 cfs @ 12.03 hrs, Volume= 4.511 af, Depth= 3.94"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 7' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 72
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 73
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 51.79 cfs @ 12.06 hrs, Volume= 3.470 af, Depth= 3.94"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 74
55
50
45
40
35
30
0
LL 25
20
15
10
5
0
Subcatchment 1S-B: To Basin 1A
Hydrograph
i i
i
,
i
-------i-------a--
i i
51.79 ds
i
1---------- +i ------------------
----------11----------
Gi ----------ii ----------Li
-----i -------- ---------
Ii
r
i
i
VP
._
...... -----------
------
----------i--------
------- a
i —1— -- G� —
PYr1 4 i r
— —
an
—
TF=1
a
uof
-
c
O�UM-1
�.o
,3. TO
of
_ _.._._....
i
i..........j_.._.._..1...................l._.._..__
; I
I
...........1.._.._.._
i ;
....._.._...._.._.. -.;-....._.....--.
i i u 110
... .
U e p
i
_h...-_�-. 9
L H..J..
qHj
engt
_4.V
nj"'
i
91
,
---------
-� ------
-- `
I
------+- - -
i
+ - - +
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 75
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 29.68 cfs @ 11.95 hrs, Volume= 1.423 af, Depth= 3.53"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
29.68 cfs
I I I t —iIHLw �
V
- ---------- -------- -I- --- 1i-----' ri,
- -------- I
--------------
----------
---------
- -- - ---
--
--
- --f--- -�- -a-- -�--gum€f--�4�a 2-if $�;5
-R�unff/o urnefi�2lafi
-----
------------
n
Ui p
�1a
T{
----- ------
- - .... ------
-----
-----
-----
-----
-------F--------- 1-----
------- � •
i I i i i
------- - --+ - — —
I I I I I
I I I I I I
i i i i i i i
i
A/ L A
I I I I
. :
. . . . . . . . . . . . . . . ............... .....--. _ ............ .................. ......... __...__.. ..................... .__...... - __...__. ..................
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 76
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 29.64 cfs @ 12.07 hrs, Volume= 2.011 af, Depth= 3.84"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 77
32=
30:
28=
26:
24
22-
20=
u 18=
c 16=
LL 14=
12=
10:
8=
6=
4-
2
Subcatchment 3S-B: To Pond 3
Hydrograph
I
1
0,
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 78
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 65.71 cfs @ 12.17 hrs, Volume= 5.594 af, Depth= 3.64"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 10yr-24hr Rainfall=5.18"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
N
3
0
LL
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
70
--_-- ... 65.71 cfs—t----t------f------F----------F------f------F----i------i --- i------t----------- .--...---.---_i--.---.---.-1------------- :.---.---.---.'--
65 ;
- ;--------+ --------- ------- ...--......-.... f-.... -..... -...-t....... Ty 1.1....2.4.-h.r..----
i:
60
-------t---- fi-----�----�---�--j--r----�----�----.�..Q-�r�24h�..�a1n#a11=1-�---..
55 i
--_--_----.-'`I_--_---_--1ii --_--_--'—I-_--_--_-Ii i--_--_--_-
r ----..R---..
. Ruboff. -...- ..A
1
50 -...-....--..-..-...-...--.;. -...- .....-..._................ a --------}---......}----r-
---------- fon45 nOYe=5 59Oaf
40
i i i i i i.u._o..ff.....De.p.h.....—...*...f 4.._..... a
35 } i I i i —
;_.._._.+._.._....+..................F.._.._.._.._.._.._.:F..._.._..+.._.._.._F...._.._.+....-_.... 1a.>�...j_e.nath_.3-3.p2_-...
i i I I i i i i
=r...
TIC
25 i i i i i Mi
- -------------- ..---..
CIN
20
861
_..i _
-------}-------------------L---------------------------------------
r
- --- -- -.-
15 ....-...------ — — -- T---------r -r-------- 1---------T-----------------r---------- ---------i
10
--
— ..... ...--...--...... -- + -- f --+ -- F — + --F +------} — — -------} — +--------} —
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 79
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 3.28" for 10yr-24hr event
Inflow = 35.84 cfs @ 12.31 hrs, Volume= 6.631 of
Outflow = 35.88 cfs @ 12.31 hrs, Volume= 6.631 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.82 fps, Min. Travel Time= 0.4 min
Avg. Velocity = 1.39 fps, Avg. Travel Time= 2.0 min
Peak Storage= 770 cf @ 12.31 hrs
Average Depth at Peak Storage= 1.85'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
w
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
i
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 80
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 3.28" for 10yr-24hr event
Inflow = 35.88 cfs @ 12.31 hrs, Volume= 6.631 of
Outflow = 35.89 cfs @ 12.32 hrs, Volume= 6.631 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.05 fps, Avg. Travel Time= 1.2 min
Peak Storage= 472 cf @ 12.32 hrs
Average Depth at Peak Storage= 2.50'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 '/'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
U
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 31M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 81
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 20.09 cfs @ 12.25 hrs, Volume= 4.502 of
Outflow = 20.10 cfs @ 12.26 hrs, Volume= 4.502 af, Atten= 0%, Lag= 0.2 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 13.73 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.63 fps, Avg. Travel Time= 1.8 min
Peak Storage= 417 cf @ 12.26 hrs
Average Depth at Peak Storage= 0.95'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
U
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 82
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.50 cfs @ 12.18 hrs, Volume= 5.594 of
Outflow = 65.51 cfs @ 12.18 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.16 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.02 fps, Avg. Travel Time= 0.2 min
Peak Storage= 167 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.11'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
w
3
0
U.
Reach 3A-R: Channel 8A-2
Hydrograph
---.---_--:---.---.---.'----------'-------'L--------' ---------`------'--..-............................................-------' L---------1--------- "---------- ----------- !--------- ---------- 1--_--_---4-------------------..
i I I I I I I I
70 - -' 65.50Cfs - --� --� - --_.................._..................... - -- ------�--- - - - - - .....
65 ....---'.. cfs .._...'--_--_-- Arg
f� a7 �- . 6_11c-....t.
I I i I i I i
i
55 MiaxV
—A
50
+ t
—
45 i — +', i — — — — — +---------i----------i------— —�F�q� +.
40
35 -- i.... --i --i —4— — +— a-- —+ —---- ~------�---w-------- + --� — ....._.......
i I I I I A I�
30 — .......... ......i........... .}.-........
.�-..-..-...}..-..-..-}.._.._.._.�..-..-..-.{..._.._...�. _ _ _
25 ;
—� ... ...— �— a— i — —= — —----
20 i i i i i i i
15
— -- i—+— —i--{ — -- -- i--- --E-- i i 4 — +.
10
I I I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 83
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.51 cfs @ 12.18 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.49 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.57 fps, Avg. Travel Time= 2.1 min
Peak Storage= 2,353 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.37'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
Reach 313-R: Channel 8A-3
Hydrograph
---.-- .................. i _Li --------'Ii ---------1iI - I .....I ..-------Ii'"' --1Ii ._1Ii'
--------- "-_------..""
--..._.........5.51 csi-_-_--^-_-_-_i_-_-_-i_-_-_- ------....
70ii
655+--------- Lhfdw
- .ria
65 .
I I I i I
60 ; ; r Ajvg-: lo*--D Pth-
i
55 Miax!V
50
i
+
45 i — +, i — — — — — +--------- i---------- i------a- ----� +.
i i i i i i i i I I ;
40
35 — — i i — — i +-------- ------+ — ------------ ------ ------------- — — — -I— ------
i i i I I I I IA I I
30
1--- -- r---1---�-'
y/�_ i /�► 1y+���/�r
........ ... .......;...-.._..._.}._.._.....'_.._......t.._.._...}.._.._.._.1.._..-..----_-..-..�...._.._...�. V���V }/ V -2 . .. .._�
25
20
15
10 T t — — T T— —[— -- 1— — 7 — i-- —T i —•
I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 84
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.19 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 16.53 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.54 fps, Avg. Travel Time= 0.2 min
Peak Storage= 171 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.56'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
w
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
---.---_--:---.---.---.'--'--'---"-'-----'L--'--'--' --'--'---`------'--..-............................................-------' 1--------- "---------- ----------- !--------- ---------- 1--_--_---4------------------..
i I I I I I I I
70 65.50 cfs .......; f t t
6I5.50 cfs __-I i I i ---------IfJ wa7 1- 4 65
I
60 I I i i i i i i -A" : lo* ID P1�
55
.........;—
50
i I
45 + - - - - - +--------- i---------- i------
• V tiw
I
40 i �7
�--35 -- -- -- - ------- !-- ------ ?------ + -L------ I ------~------ 1------- �------ + -- --............
i I I I I 30
81
30
1..
{......_...-.}-..-..-..-..-..-...9 . � cfs25 apac;4
20 i i i
15
- -- ; —+— — -- — ----�------
10
I I I I
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 85
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 3.64" for 10yr-24hr event
Inflow = 65.71 cfs @ 12.17 hrs, Volume= 5.594 of
Outflow = 65.50 cfs @ 12.18 hrs, Volume= 5.594 af, Atten= 0%, Lag= 0.7 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.51 fps, Min. Travel Time= 0.9 min
Avg. Velocity = 2.03 fps, Avg. Travel Time= 3.4 min
Peak Storage= 3,564 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.21'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
U
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 86
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 51.79 cfs @ 12.06 hrs, Volume= 3.470 of
Outflow = 15.87 cfs @ 12.32 hrs, Volume= 2.129 af, Atten= 69%, Lag= 15.3 min
Primary = 15.87 cfs @ 12.32 hrs, Volume= 2.129 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 405.84' @ 12.32 hrs Surf.Area= 26,735 sf Storage= 79,136 cf
Plug -Flow detention time= 222.5 min calculated for 2.129 of (61 % of inflow)
Center -of -Mass det. time= 117.5 min ( 915.7 - 798.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=15.76 cfs @ 12.32 hrs HW=405.84' TW=394.37' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 15.76 cfs @ 2.99 fps)

PB SPPP Project 2021 Type 11 24-hr 10yr--24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 87
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 88
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 3.94" for 10yr-24hr event
Inflow = 74.78 cfs @ 12.03 hrs, Volume= 4.511 of
Outflow = 20.09 cfs @ 12.25 hrs, Volume= 4.502 af, Atten= 73%, Lag= 13.6 min
Primary = 20.09 cfs @ 12.25 hrs, Volume= 4.502 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 405.36' @ 12.25 hrs Surf.Area= 32,887 sf Storage= 132,328 cf (78,948 cf above start)
Plug -Flow detention time= 272.5 min calculated for 3.277 of (73% of inflow)
Center -of -Mass det. time= 107.2 min ( 902.2 - 795.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=20.08 cfs @ 12.25 hrs HW=405.36' TW=403.55' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 20.08 cfs @ 6.39 fps)

MANUMMUMMOTCY1
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 89
Pond 1 B: Existing Basin 1
Hydrograph
■ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 90
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 3.49" for 10yr-24hr event
Inflow = 103.38 cfs @ 12.31 hrs, Volume= 15.656 of
Outflow = 8.13 cfs @ 15.96 hrs, Volume= 11.787 af, Atten= 92%, Lag= 219.0 min
Primary = 8.13 cfs @ 15.96 hrs, Volume= 11.787 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 396.19' @ 15.96 hrs Surf.Area= 2.364 ac Storage= 15.142 of (10.540 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= 2,470.2 min calculated for 7.185 of (46% of inflow)
Center -of -Mass det. time= 1,479.2 min ( 2,382.8 - 903.6 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 91
Primary OutFlow Max=8.13 cfs @ 15.96 hrs HW=396.19' (Free Discharge)
L1=Culvert (Passes 8.13 cfs of 141.99 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 1.74 cfs @ 9.13 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 6.39 cfs @ 1.42 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
I
w
3
0
LL
Pond 2B: 2P
Hydrograph
no
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
LInflow
wrydary

BASIN 2 REPORT
PB SPPP Project 2021 Type/1 24-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 92
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 3.69" for 10yr-24hr event
Inflow
= 88.31 cfs @
12.14 hrs, Volume= 7.605 of
Outflow
= 64.22 cfs @
12.31 hrs, Volume= 7.602 af, Atten= 27%, Lag= 9.7 min
Primary
= 64.22 cfs @
12.31 hrs, Volume= 7.602 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
399.96' @ 12.31 hrs Surf.Area= 40,842 sf Storage= 109,933 cf (87,767 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage= 173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 164.6 min calculated for 7.093 of (93% of inflow)
Center -of -Mass det. time= 103.3 min ( 918.9 - 815.6 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2 (outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1 (inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
391.00
1,446
0 0
392.00
2,583
2,015 2,015
393.00
3,801
3,192 5,207
394.00
5,119
4,460 9,667
395.00
6,761
5,940 15,607
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
392.00
1,032
0 0
393.00
1,971
1,502 1,502
394.00
3,048
2,510 4,011
395.00
4,215
3,632 7,643
Elevation
Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
396.00
13,953
0 0
397.00
17,143
15,548 15,548
398.00
22,159
19,651 35,199
399.00
26,581
24,370 59,569
400.00
30,000
28,291 87,860
402.00
32,000
62,000 149,860
404.00
43,560
75,560 225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 10yr-24hr Rainfall=5.18"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 93
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=64.19 cfs @ 12.31 hrs HW=399.96' TW=392.91' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 64.19 cfs @ 9.08 fps)
P4=S
=Orifice/Grate (Passes < 3.65 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 44.27 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 20.22 cfs potential flow)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 94
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 91.06 cfs @ 12.03 hrs, Volume= 5.559 af, Depth= 4.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 95
fl
Subcatchment 1S-A: To Basin 1A
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 96
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 63.14 cfs @ 12.06 hrs, Volume= 4.277 af, Depth= 4.86"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

MANUMMUMMOTCY1
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HydroCAD® 10.00-20 s/n 06105 © 2017 HydroCAD Software Solutions LLC Page 97
Subcatchment 1S-B: To Basin 1A
w
0
LL
Hydrograph
70 i 1
------..._ ........ t + t t F.. t F + + + t f -} + -t a
60 i i i i i i i i It-
-;4-----------
I --------- ?----- ------- ii ----------1--------- i --------aI -------- i
55 i--teain
--
?
--
, r
50 u o----------t------ ------
-,-- -c
45 i i i iRliln # Me14 7-7-Alf
lf
40
35
30 i i i I ! ( i
i I i i i i
-;-- ,--- ! ,--- ; ;-----;------;.......
------.--------�---'i----_- - rein 25 i i i i i i i i i i —
Ic !
.-..-----.}-..-._...._.4....._........................:....................i....-..-....+.._.._.._.i....._.._.+...-...----F..........-.;.......----.._.._...._..._.-._;_....._....._.....?....._....._....._i.-......_....
i
20 0=
;
15 i
10
i i i i i i i i i ! i !
5 r
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 98
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 36.69 cfs @ 11.95 hrs, Volume= 1.782 af, Depth= 4.43"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 99
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 36.29 cfs @ 12.07 hrs, Volume= 2.488 af, Depth= 4.75"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 100
40
38
36
34
32
30
28
26
24
u 22
3 20
LL 18
16
14
12
10
8
6
4
2
0
Subcatchment 3S-B: To Pond 3
Hydrograph
i
•
I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 101
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 81.32 cfs @ 12.17 hrs, Volume= 6.976 af, Depth= 4.53"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 25yr-24hr Rainfall=6.13"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
3
a
LL
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
_ - ---•--•---------------•---- •---- - _ _ - - - - - - - _
I i i ! i � i I i I _I i !
90 } — — t t--------- + ------ F---------t F +---------t ?--------
I
------- ---------
+--------•-
85 St32 cs — .....
80 _ t ---
U-
I
75
70 i z;)yr� _
-r-...... ..... - - - -- - { - -- -�-- F--a-- - - -.
65
Ra-6o#`f Ate- =-1 i rt- —i- ,----,-- -- -
6o
55 i i I ; i i i i ! 1C Off iV � 11'1� 6.97
50 i -
-;—ie
-— -�- -_ --
-s--5..
45 T ------ ----- �---r------- ---r- - r -- -r- -r---- la-i---w-
40 4----t-------- ------ 4------- I------- ------ r-----t------ 2--
- -�
-- -
35 � i
r-- -i-- -! -- r ---- �� 7
30 ! i i
- ,
25
-------' ---..... ....-- ------------......... .......... ;....... ..... ..... -------- -----t-..._.....__..._...._.....__...---------.-....._.....__..._j..................?---------;-....._..� ._... __ ....
20
---fi---------4- ----- - - - - - - C - - - -j-- - -j - - - j - - r - - - t- - -
15 i i
---_-_- ------ -_--_- ------- -_-_----_-_--_-_-_-_t_-_-_-- -_-_-- --
-- -r- - -- -r-- -r-- ----
10a............... ...... ...... ..... ..... . µ —1 — - - — — —1- —= - —1— - —
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 102
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 4.19" for 25yr-24hr event
Inflow = 50.66 cfs @ 12.25 hrs, Volume= 8.486 of
Outflow = 50.65 cfs @ 12.26 hrs, Volume= 8.486 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.24 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 1.45 fps, Avg. Travel Time= 1.9 min
Peak Storage= 1,033 cf @ 12.26 hrs
Average Depth at Peak Storage= 2.44'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
0
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 103
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 4.19" for 25yr-24hr event
Inflow = 50.65 cfs @ 12.26 hrs, Volume= 8.486 of
Outflow = 35.65 cfs @ 12.10 hrs, Volume= 8.486 af, Atten= 30%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.09 fps, Avg. Travel Time= 1.1 min
Peak Storage= 530 cf @ 12.15 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
0
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 104
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 4.85" for 25yr-24hr event
Inflow = 22.83 cfs @ 12.25 hrs, Volume= 5.551 of
Outflow = 22.83 cfs @ 12.26 hrs, Volume= 5.551 af, Atten= 0%, Lag= 0.3 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.18 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.75 fps, Avg. Travel Time= 1.7 min
Peak Storage= 459 cf @ 12.26 hrs
Average Depth at Peak Storage= 1.02'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
[ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 105
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.07 cfs @ 12.18 hrs, Volume= 6.976 of
Outflow = 81.08 cfs @ 12.18 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 7.63 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.16 fps, Avg. Travel Time= 0.1 min
Peak Storage= 194 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.25'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
N
U
3
0
LL
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 106
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.08 cfs @ 12.18 hrs, Volume= 6.976 of
Outflow = 81.06 cfs @ 12.19 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.5 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.83 fps, Min. Travel Time= 0.6 min
Avg. Velocity = 1.67 fps, Avg. Travel Time= 2.0 min
Peak Storage= 2,739 cf @ 12.19 hrs
Average Depth at Peak Storage= 1.53'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
N
U
3
0
LL
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 107
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.06 cfs @ 12.19 hrs, Volume= 6.976 of
Outflow = 81.07 cfs @ 12.19 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 17.73 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 4.82 fps, Avg. Travel Time= 0.1 min
Peak Storage= 198 cf @ 12.19 hrs
Average Depth at Peak Storage= 0.63'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
N
U
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 108
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 4.53" for 25yr-24hr event
Inflow = 81.32 cfs @ 12.17 hrs, Volume= 6.976 of
Outflow = 81.07 cfs @ 12.18 hrs, Volume= 6.976 af, Atten= 0%, Lag= 0.6 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.02 fps, Min. Travel Time= 0.9 min
Avg. Velocity = 2.17 fps, Avg. Travel Time= 3.1 min
Peak Storage= 4,127 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.37'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 '/' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 '/'
Inlet Invert= 428.00', Outlet Invert= 417.53'
N
V
3
0
LL
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 109
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 4.86" for 25yr-24hr event
Inflow = 63.14 cfs @ 12.06 hrs, Volume= 4.277 of
Outflow = 27.84 cfs @ 12.25 hrs, Volume= 2.935 af, Atten= 56%, Lag= 11.4 min
Primary = 27.84 cfs @ 12.25 hrs, Volume= 2.935 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 406.22' @ 12.25 hrs Surf.Area= 29,321 sf Storage= 89,788 cf
Plug -Flow detention time= 195.9 min calculated for 2.935 of (69% of inflow)
Center -of -Mass det. time= 98.1 min ( 890.5 - 792.5 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=27.79 cfs @ 12.25 hrs HW=406.22' TW=394.95' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 27.79 cfs @ 3.61 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 110
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 111
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 4.86" for 25yr-24hr event
Inflow = 91.06 cfs @ 12.03 hrs, Volume= 5.559 of
Outflow = 22.83 cfs @ 12.25 hrs, Volume= 5.551 af, Atten= 75%, Lag= 13.6 min
Primary = 22.83 cfs @ 12.25 hrs, Volume= 5.551 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 405.90' @ 12.26 hrs Surf.Area= 34,596 sf Storage= 150,301 cf (96,922 cf above start)
Plug -Flow detention time= 240.6 min calculated for 4.323 of (78% of inflow)
Center -of -Mass det. time= 101.3 min ( 890.5 - 789.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=22.82 cfs @ 12.25 hrs HW=405.89' TW=403.62' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 22.82 cfs @ 7.26 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 112
0
Pond 1 B: Existing Basin 1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 113
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 4.40" for 25yr-24hr event
Inflow = 108.86 cfs @ 12.32 hrs, Volume= 19.728 of
Outflow = 25.10 cfs @ 13.80 hrs, Volume= 15.830 af, Atten= 77%, Lag= 88.7 min
Primary = 25.10 cfs @ 13.80 hrs, Volume= 15.830 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 396.44' @ 13.80 hrs Surf.Area= 2.397 ac Storage= 15.754 of (11.152 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= 1,752.9 min calculated for 11.228 of (57% of inflow)
Center -of -Mass det. time= 1,126.5 min ( 2,015.7 - 889.2 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 114
Primary OutFlow Max=25.09 cfs @ 13.80 hrs HW=396.44' (Free Discharge)
L1=Culvert (Passes 25.09 cfs of 147.20 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 1.81 cfs @ 9.46 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 23.29 cfs @ 2.18 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
N
V
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 115
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 4.59" for 25yr-24hr event
Inflow
= 109.21 cfs @
12.14 hrs, Volume=
9.464 of
Outflow
= 69.58 cfs @
12.34 hrs, Volume=
9.460 af, Atten= 36%, Lag= 12.0 min
Primary
= 69.58 cfs @
12.34 hrs, Volume=
9.460 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
400.58' @ 12.34 hrs Surf.Area= 41,555
sf Storage= 128,642 cf (106,477 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 143.5 min calculated for 8.947
of (95% of inflow)
Center -of -Mass det. time= 93.3
min ( 902.6 - 809.3 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 11 24-hr 25yr-24hr Rainfall=6.13"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 116
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=69.54 cfs @ 12.34 hrs HW=400.57' TW=393.67' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 69.54 cfs @ 9.84 fps)
P4=S
=Orifice/Grate (Passes < 3.88 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 63.86 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 72.84 cfs potential flow)
I
Pond 3B: Pond 3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
❑ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 117
Summary for Subcatchment 1S-A: To Basin 1A
Runoff = 116.94 cfs @ 12.02 hrs, Volume= 7.276 af, Depth= 6.36"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
4.327
98 Paved roads w/curbs & sewers, HSG C
0.180
98 Paved roads w/curbs & sewers, HSG C
0.502
98 Water Surface, HSG C
0.683
77 Woods, Poor, HSG C
0.242
77 Woods, Poor, HSG C
0.584
77 Woods, Poor, HSG C
0.045
74 >75% Grass cover, Good, HSG C
0.098
74 >75% Grass cover, Good, HSG C
0.051
74 >75% Grass cover, Good, HSG C
0.128
86 <50% Grass cover, Poor,
HSG C
0.529
74 >75% Grass cover, Good, HSG C
6.353
87 Dirt roads, HSG C
13.722
89 Weighted Average
8.713
63.50% Pervious Area
5.009
36.50% Impervious Area
Tc Length Slope Velocity Capacity
Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
4.8
150 0.0260 0.52
Sheet Flow, sheet from LS stockpile
Fallow n= 0.050 P2= 3.54"
3.8
675 0.0330 2.92
Shallow Concentrated Flow, Concentrated from stockpile
Unpaved Kv= 16.1 fps
0.3
125 0.0100 6.22 7.63
Pipe Channel, 15" rcp culv
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.5
260 0.0310 2.83
Shallow Concentrated Flow, culvert to ditch
Unpaved Kv= 16.1 fps
0.8
218 0.0180 4.73 23.65
Trap/Vee/Rect Channel Flow, ditch to culv
Bot.W=2.00' D=1.00' Z= 3.0 7' Top.W=8.00'
n= 0.030 Earth, grassed & winding
0.2
250 0.0480 17.06 41.03
Pipe Channel, Final pipe
21.0" Round Area= 2.4 sf Perim= 5.5' r= 0.44'
n= 0.011 Concrete pipe, straight & clean
11.4 1,678 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 118
Subcatchment 1S-A: To Basin 1A
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 119
Summary for Subcatchment 1S-B: To Basin 1A
Runoff = 81.41 cfs @ 12.06 hrs, Volume= 5.599 af, Depth= 6.36"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
0.169
74
>75% Grass cover, Good, HSG C
1.793
98
Paved roads w/curbs & sewers, HSG C
0.632
98
Roofs, HSG C
0.053
98
Roofs, HSG C
0.956
74
>75% Grass cover, Good, HSG C
0.355
98
Water Surface, HSG C
6.600
87
Dirt roads, HSG C
10.558 89 Weighted Average
7.725 73.17% Pervious Area
2.833 26.83% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
5.4
150
0.0200
0.47
Sheet Flow, stkpile area
Fallow n= 0.050 P2= 3.54"
0.5
66
0.0200
2.28
Shallow Concentrated Flow, sktpile area
Unpaved Kv= 16.1 fps
0.6
110
0.0360
2.85
Shallow Concentrated Flow, grass after stkpile
Grassed Waterway Kv= 15.0 fps
3.3
518
0.0270
2.65
Shallow Concentrated Flow, Unpaved areas around bldg 12
Unpaved Kv= 16.1 fps
0.4
193
0.0240
8.83
10.84
Pipe Channel, Stm pipe 1st leg
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.012 Concrete pipe, finished
0.2
127
0.0260
10.38
18.35
Pipe Channel, 2nd leg of pipe
18.0" Round Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.012 Concrete pipe, finished
0.9
280
0.0040
4.93
15.50
Pipe Channel, 3rd leg stm pipe
24.0" Round Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.012 Concrete pipe, finished
3.6
265
0.0300
1.21
Shallow Concentrated Flow, grassed area within lowlying area
Short Grass Pasture Kv= 7.0 fps
14.9 1,709 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 120
w
0
LL
Subcatchment 1S-B: To Basin 1A
Hydrograph
—t —r — --1-- -- -- J --1-- 1-- —
90 ;
i I i i i i i i I i
85 81.41 cfs i i i i i i i
-- - —}- - -- - *— j ---- ---- ---- --- ---- -- - —
80
75
1 OOyr- 4hr Rainfall =7 67'
70
1 1 ; I I 1 I 'i� pp
65 i i -0 af ,-Rf- Are*7
60 - - __..... ;
_-4t------4-------------------r-------k------
,r- - -{r- -9lof V-�IUe99rC
55 i i i i
--- - t 1
r-- r-- r---'--- r--y
1 �i I50 1 i
------------- - --Ei ....!....... I Bn
--------------{------ -nano
i
45 i i i iF � i
--� -..... = -- L
W1 e — -
40 - - - - - - - i -- - - - - i -- - - -i- ----a ------ ---- a---------+..-------- + - - - -------- --
i
35 ------ 1-- ..... {- - - -- -- --- ----�---4---4--------------+-----?------- -- = `� • , - I
30 1 1
i
2520
i I t I i i i i i I I
15
i
10 --------------- `'-_--_-...------- ------- '--_-_--...---- --------------- '
5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 121
Summary for Subcatchment 2S-A: Direct to 2P
Runoff = 48.02 cfs @ 11.95 hrs, Volume= 2.374 af, Depth= 5.90"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (sf) CN Description
66,516
98 Water Surface, HSG C
83,461
74 >75% Grass cover, Good, HSG C
60,505
87 Dirt roads, HSG C
210,482
85 Weighted Average
143,966
68.40% Pervious Area
66,516
31.60% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry, minimum TOC
Subcatchment 2S-A: Direct to 2P
Hydrograph
50
i 48.02 cfs
i
i i i i i I 1+24-h
'
45
-------2hr
i
_
I 4, � Rhin#�I� 7'
40
35
--
j; `, ,
i i f 1 V r•
; I i is
u o olume 2. f
- r ---- --�-- 4}
30
;
; R naff Qep;th�5. O"
---------- = ------ -
-4--------- ;----------t-------------------}---------; -;----------I ----;---- ---- -
-m
25
�------� n--1--
i-- ,
iTC, 5.
20
i
I I I 5
i
--i --i —i i ---- — - --- --
15
i
10
iA..
i
5
0j
0 5
20 25 30 35 40 45 50 55 60 65 k 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 122
Summary for Subcatchment 3S-B: To Pond 3
Runoff = 47.01 cfs @ 12.07 hrs, Volume= 3.271 af, Depth= 6.25"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (sf) CN Description
11,911
98 Water Surface, HSG C
25,046
77 Woods, Poor, HSG C
31,514
98 Roofs, HSG C
820
98 Roofs, HSG C
204,485
87 Dirt roads, HSG C
273,776
88 Weighted Average
229,531
83.84% Pervious Area
44,245
16.16% Impervious Area
Tc Length
Slope Velocity Capacity
Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
9.3 150
0.0050 0.27
Sheet Flow, Sheet flow in NE direection from bldg 12
Fallow n= 0.050 P2= 3.54"
1.8 142
0.0070 1.35
Shallow Concentrated Flow, "flat" conc flow
Unpaved Kv= 16.1 fps
4.4 791
0.0350 3.01
Shallow Concentrated Flow, Flow to pond 3
Unpaved Kv= 16.1 fps
15.5 1,083 Total

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 123
Subcatchment 3S-B: To Pond 3
Hydrograph
■ Runoff
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 124
Summary for Subcatchment 3S-C: LS area to Pond 3
Runoff = 106.58 cfs @ 12.17 hrs, Volume= 9.251 af, Depth= 6.01"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Type II 24-hr 100yr-24hr Rainfall=7.67"
Area (ac) CN Description
18.466 86 excludes recirc ponds
18.466 100.00% Pervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
4.1
150
0.0400
0.62
Sheet Flow, sheet flow NW corner
Fallow n= 0.050 P2= 3.54"
20.2
3,152
0.0260
2.60
Shallow Concentrated Flow, Flow thru LS plant to pond 3
Unpaved Kv= 16.1 fps
24.3 3,302 Total
I
Subcatchment 3S-C: LS area to Pond 3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Runoff

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 125
Summary for Reach 1A-R: 36" Pipe
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 5.70" for 100yr-24hr event
Inflow = 72.62 cfs @ 12.21 hrs, Volume= 11.525 of
Outflow = 51.09 cfs @ 12.10 hrs, Volume= 11.525 af, Atten= 30%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.23 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 1.53 fps, Avg. Travel Time= 1.8 min
Peak Storage= 1,188 cf @ 12.10 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 51.09 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 168.0' Slope= 0.0050 T
Inlet Invert= 392.52', Outlet Invert= 391.68'
N
V
3
0
LL
Reach 1A-R: 36" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
1_ Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 126
Summary for Reach 1 B-R: 36" Pipe to 2P
Inflow Area = 24.280 ac, 32.30% Impervious, Inflow Depth = 5.70" for 100yr-24hr event
Inflow = 51.09 cfs @ 12.10 hrs, Volume= 11.525 of
Outflow = 35.40 cfs @ 12.05 hrs, Volume= 11.525 af, Atten= 31%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 5.71 fps, Min. Travel Time= 0.2 min
Avg. Velocity = 1.15 fps, Avg. Travel Time= 1.1 min
Peak Storage= 530 cf @ 12.05 hrs
Average Depth at Peak Storage= 3.00'
Bank -Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 35.40 cfs
36.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 75.0' Slope= 0.0024 7'
Inlet Invert= 391.68', Outlet Invert= 391.50'
N
V
3
0
LL
Reach 1 B-R: 36" Pipe to 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
C-' Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paoe 127
Summary for Reach 1 R: 24" Pipe
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 of
Outflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 14.67 fps, Min. Travel Time= 0.3 min
Avg. Velocity = 2.91 fps, Avg. Travel Time= 1.6 min
Peak Storage= 511 cf @ 12.27 hrs
Average Depth at Peak Storage= 1.11'
Bank -Full Depth= 2.00' Flow Area= 3.1 sf, Capacity= 44.18 cfs
24.0" Round Pipe
n= 0.012 Concrete pipe, finished
Length= 285.0' Slope= 0.0325 '/'
Inlet Invert= 402.60', Outlet Invert= 393.34'
N
V
3
0
LL
Reach 1 R: 24" Pipe
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
Inflow
❑ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 128
Summary for Reach 3A-R: Channel 8A-2
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.25 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 2.35 fps, Avg. Travel Time= 0.1 min
Peak Storage= 235 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.45'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 440.38 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 18.3' Slope= 0.0268 '/'
Inlet Invert= 417.53', Outlet Invert= 417.04'
I
Reach 3A-R: Channel 8A-2
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 129
Summary for Reach 313-11: Channel 8A-3
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.25 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.4 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 6.30 fps, Min. Travel Time= 0.5 min
Avg. Velocity = 1.83 fps, Avg. Travel Time= 1.8 min
Peak Storage= 3,325 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.77'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 301.20 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 197.2' Slope= 0.0125 T
Inlet Invert= 417.04', Outlet Invert= 414.57'
I
Reach 313-R: Channel 8A-3
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 130
Summary for Reach 3C-R: Channel 8A-4
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.25 cfs @ 12.18 hrs, Volume= 9.251 of
Outflow = 106.26 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.0 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 19.34 fps, Min. Travel Time= 0.0 min
Avg. Velocity = 5.24 fps, Avg. Travel Time= 0.1 min
Peak Storage= 238 cf @ 12.18 hrs
Average Depth at Peak Storage= 0.73'
Bank -Full Depth= 3.00' Flow Area= 36.0 sf, Capacity= 1,493.79 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 2.0 7' Top Width= 18.00'
Length= 43.3' Slope= 0.3081 T
Inlet Invert= 414.57', Outlet Invert= 401.23'
I
3
0
LL
Reach 3C-R: Channel 8A-4
Hydrograph
19151711=1111
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 131
Summary for Reach 5R: Channel 8A-1
Inflow Area = 18.466 ac, 0.00% Impervious, Inflow Depth = 6.01" for 100yr-24hr evenl
Inflow = 106.58 cfs @ 12.17 hrs, Volume= 9.251 of
Outflow = 106.27 cfs @ 12.18 hrs, Volume= 9.251 af, Atten= 0%, Lag= 0.6 min
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Max. Velocity= 8.71 fps, Min. Travel Time= 0.8 min
Avg. Velocity = 2.37 fps, Avg. Travel Time= 2.9 min
Peak Storage= 4,982 cf @ 12.18 hrs
Average Depth at Peak Storage= 1.60'
Bank -Full Depth= 3.00' Flow Area= 27.0 sf, Capacity= 324.01 cfs
6.00' x 3.00' deep channel, n= 0.030 Stream, clean & straight
Side Slope Z-value= 1.0 7' Top Width= 12.00'
Length= 409.2' Slope= 0.0256 T
Inlet Invert= 428.00', Outlet Invert= 417.53'
I
Reach 5R: Channel 8A-1
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 132
Summary for Pond 1A-B: Existing Basin 1A (low lying greenspace)
Inflow Area = 10.558 ac, 26.83% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 81.41 cfs @ 12.06 hrs, Volume= 5.599 of
Outflow = 46.48 cfs @ 12.21 hrs, Volume= 4.257 af, Atten= 43%, Lag= 8.8 min
Primary = 46.48 cfs @ 12.21 hrs, Volume= 4.257 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Peak Elev= 406.72' @ 12.21 hrs Surf.Area= 33,309 sf Storage= 105,380 cf
Plug -Flow detention time= 169.5 min calculated for 4.255 of (76% of inflow)
Center -of -Mass det. time= 83.2 min ( 868.4 - 785.2 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 154,571 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 2,623 0 0
402.00 9,204 11,827 11,827
404.00 17,449 26,653 38,480
406.00 27,541 44,990 83,470
408.00 43,560 71,101 154,571
Device Routinq Invert Outlet Devices
#1 Primary 405.00' 6.3' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=46.23 cfs @ 12.21 hrs HW=406.71' TW=395.52' (Dynamic Tailwater)
L1=Sharp-Crested Rectangular Weir (Weir Controls 46.23 cfs @ 4.28 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Pace 133
Pond 1A-B: Existing Basin 1A (low lying greenspace)
Hydrograph
■ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 134
Summary for Pond 1 B: Existing Basin 1
Inflow Area = 13.722 ac, 36.50% Impervious, Inflow Depth = 6.36" for 100yr-24hr event
Inflow = 116.94 cfs @ 12.02 hrs, Volume= 7.276 of
Outflow = 26.29 cfs @ 12.27 hrs, Volume= 7.268 af, Atten= 78%, Lag= 14.9 min
Primary = 26.29 cfs @ 12.27 hrs, Volume= 7.268 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 402.60' Surf.Area= 24,334 sf Storage= 53,379 cf
Peak Elev= 406.73' @ 12.28 hrs Surf.Area= 37,300 sf Storage= 180,151 cf (126,772 cf above start)
Plug -Flow detention time= 212.9 min calculated for 6.040 of (83% of inflow)
Center -of -Mass det. time= 96.4 min ( 878.4 - 782.0 )
Volume Invert Avail.Storage Storage Description
#1 400.00' 230,133 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic -feet) (cubic -feet)
400.00 16,836 0 0
401.00 19,630 18,233 18,233
402.00 22,539 21,085 39,318
403.00 25,530 24,035 63,352
404.00 28,610 27,070 90,422
405.00 31,721 30,166 120,588
406.00 34,929 33,325 153,913
407.00 38,193 36,561 190,474
408.00 41,125 39,659 230,133
Device Routing Invert Outlet Devices
#1 Primary 402.60' 24.0" Vert. Orifice/Grate C= 0.600
Primary OutFlow Max=26.26 cfs @ 12.27 hrs HW=406.72' TW=403.71' (Dynamic Tailwater)
L1=Orifice/Grate (Orifice Controls 26.26 cfs @ 8.36 fps)

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 135
1
1 • r
11
•1
:1
1
.1
1
1
1
1 1 1 1 �1 1 .1 1 :1 •1
■ Inflow
❑ Primary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 136
Summary for Pond 2B: 2P
Inflow Area = 53.863 ac, 19.28% Impervious, Inflow Depth = 5.89" for 100yr-24hr event
Inflow = 121.30 cfs @ 12.05 hrs, Volume= 26.417 of
Outflow = 57.71 cfs @ 13.31 hrs, Volume= 22.487 af, Atten= 52%, Lag= 75.3 min
Primary = 57.71 cfs @ 13.31 hrs, Volume= 22.487 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.05 hrs
Starting Elev= 391.00' Surf.Area= 1.718 ac Storage= 4.603 of
Peak Elev= 396.80' @ 13.31 hrs Surf.Area= 2.443 ac Storage= 16.606 of (12.004 of above start)
Flood Elev= 400.00' Surf.Area= 2.869 ac Storage= 25.105 of (20.502 of above start)
Plug -Flow detention time= 1,168.5 min calculated for 17.876 of (68% of inflow)
Center -of -Mass det. time= 810.8 min ( 1,687.1 - 876.2 )
Volume Invert Avail.Storage Storage Description
#1 388.00' 25.105 of Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
388.00 1.345 0.000 0.000
389.00 1.471 1.408 1.408
390.00 1.600 1.536 2.943
391.00 1.718 1.659 4.603
392.00 1.833 1.775 6.378
393.00 1.955 1.894 8.272
394.00 2.077 2.016 10.288
395.00 2.204 2.140 12.428
396.00 2.340 2.272 14.701
397.00 2.469 2.404 17.105
398.00 2.599 2.534 19.639
399.00 2.732 2.665 22.304
400.00 2.869 2.800 25.105
Device Routing Invert Outlet Devices
#1 Primary 390.50' 54.0" Round Culvert
L= 100.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 390.50' / 382.00' S= 0.0850 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 15.90 sf
#2 Device 1 391.00' 0.5" Vert. Orifice/Grate X 20.00 columns
X 7 rows with 6.0" cc spacing C= 0.600
#3 Device 1 396.00' 24.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 397.00' 30.0' long x 28.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 137
Primary OutFlow Max=57.70 cfs @ 13.31 hrs HW=396.80' (Free Discharge)
L1=Culvert (Passes 57.70 cfs of 154.05 cfs potential flow)
�2=0 rifi ce/G rate
(Orifice Controls 1.89 cfs @ 9.89 fps)
3=Sharp-Crested Rectangular Weir (Weir Controls 55.81 cfs @ 2.92 fps)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=391.00' (Free Discharge)
L4= Broad -Crested Rectangular Weir ( Controls 0.00 cfs)
3
0
LL
Pond 2B: 2P
Hydrograph
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)
■ Inflow
■ Outflow
■ Primary
■ Secondary

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 138
Summary for Pond 3B: Pond 3
Inflow Area
= 24.751 ac,
4.10% Impervious, Inflow Depth = 6.07" for 100yr-24hr event
Inflow
= 143.04 cfs @
12.14 hrs, Volume=
12.523 of
Outflow
= 78.85 cfs @
12.38 hrs, Volume=
12.519 af, Atten= 45%, Lag= 14.3 min
Primary
= 78.85 cfs @
12.38 hrs, Volume=
12.519 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-96.00
hrs, dt= 0.05 hrs
Starting Elev= 394.90' Surf.Area= 10,695 sf Storage= 22,165 cf
Peak Elev=
401.77' @ 12.38 hrs Surf.Area= 42,743
sf Storage= 165,692 cf (143,526 cf above start)
Flood Elev=
402.00' Surf.Area=
42,976 sf Storage=
173,109 cf (150,943 cf above start)
Plug -Flow detention
time= 124.9 min calculated for 12.010 of (96% of inflow)
Center -of -Mass det. time= 82.5
min ( 884.0 - 801.4 )
Volume
Invert Avail.Storage Storage Description
#1
391.00' 15,607
cf Chamber 2
(outlet) (Prismatic) Listed below (Recalc)
#2
392.00' 7,643
cf Chamber 1
(inlet) (Prismatic) Listed below (Recalc)
#3
396.00' 225,420 cf Combined Chambers (Prismatic) Listed below (Recalc)
248,669
cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
391.00
1,446
0
0
392.00
2,583
2,015
2,015
393.00
3,801
3,192
5,207
394.00
5,119
4,460
9,667
395.00
6,761
5,940
15,607
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
392.00
1,032
0
0
393.00
1,971
1,502
1,502
394.00
3,048
2,510
4,011
395.00
4,215
3,632
7,643
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic
-feet)
396.00
13,953
0
0
397.00
17,143
15,548
15,548
398.00
22,159
19,651
35,199
399.00
26,581
24,370
59,569
400.00
30,000
28,291
87,860
402.00
32,000
62,000
149,860
404.00
43,560
75,560
225,420

BASIN 2 REPORT
PB SPPP Project 2021 Type 1124-hr 100yr-24hr Rainfall=7.67"
Prepared by 3M Printed 4/12/2021
HvdroCAD® 10.00-20 s/n 06105 © 2017 HvdroCAD Software Solutions LLC Paae 139
Device
Routing
Invert
Outlet Devices
#1
Primary
394.90'
36.0" Round Culvert
L= 265.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 394.90' / 391.60' S= 0.0125 '/' Cc= 0.900
n= 0.011 Concrete pipe, straight & clean, Flow Area= 7.07 sf
#2
Device 1
394.90'
8.0" Vert. Orifice/Grate C= 0.600
#3
Device 1
397.90'
5.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s)
#4
Device 1
399.50'
20.0' long Sharp -Crested Rectangular Weir 0 End Contraction(s)
Primary OutFlow Max=78.78 cfs @ 12.38 hrs HW=401.76' TW=394.69' (Dynamic Tailwater)
L1=Culvert (Inlet Controls 78.78 cfs @ 11.15 fps)
P4=S
=Orifice/Grate (Passes < 4.29 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 104.78 cfs potential flow)
harp -Crested Rectangular Weir (Passes < 221.89 cfs potential flow)
Pond 3B: Pond 3
Hydrograph
❑ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Time (hours)