Planning & Zoning Commission (linked)
agenda center agenda
| Board/Commission | Planning & Zoning Commission |
|---|---|
| Meeting Date | August 08, 2023 |
| Pages | 85 |
| File Size | 1.7 MB |
| OCR Status | Searchable (OCR processed) |
| Source URL | Original |
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BOSTON POST ROAD (US ROUTE 1)
MINER LANE
POA-2
POA-1
POA-3
RJO'CONNELL
& ASSOCIATES, INC.
CIVIL ENGINEERS, SURVEYORS
& LAND PLANNERS
AREA BEING
MODIFIED
POINT OF
ANALYSIS
BEING
AFFECTED
This Page Intentionally Left Blank
CHAIN LINK FENCE
SWALE
DMH
BCLC
CB
CB
GV
EXISTING BUILDING
"WEBSTER BANK"
124 BOSTON
POST ROAD
2,496 SF±
BLDG HT 16.3'±
SIGN
SNET
705
SBC
692
W/TRANSF
CONCRETE BLOCK
RETAINING WALL
SBC
694
SIGN
GAS
METER
ELECTRIC
PANEL
ELECTRIC
HANDHOLE
METAL
BEAM
GUIDERAIL
CMU
WALL
CMU
WALL
METAL
LID
EVERSOURCE
9018 W/ RISERS
STONE
SWALE
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
ELECTRIC
HAND
HOLE
METAL
BEAM
GUIDERAIL
CHAIN LINK
FENCE
GRASS SWALE
CB 6
CB 3
CB 2
CB 1
CB 5
CB 9
CB 8
CB 7
CB 11
LP
DMH 1
DMH 4
DMH 8
DMH 9
DMH 15
DMH 12
DMH 11
DMH 13
SMH 3
SMH 2
SMH
SMH 1
R=73.12
I=64.22(S)
I=64.22(W)
DMH 2
R=72.78
I=69.28(N)
I=69.13(W)
I=67.38(S)
SMH 5
SMH
RETAINING WALL
RETAINING
WALL
CHAIN LINK
FENCE
RETAINING
WALL
RETAINING
WALL
YARD
DRAIN
INSPECTION
PORT
METAL
RAIL
CB 4
DMH 10
OVERHEAD
UTILITIES
DMH 5
DMH 6
DMH 7
SMH 4
CB 12
CB 10
N/F
SH WATERFORD
PORTFOLIO, L.P.
VOLUME 583, PAGE 12
N/F
SH WATERFORD
PORTFOLIO, L.P.
VOLUME 583, PAGE 12
N/F
HESS REALTY CORPORATION
VOLUME 381, PAGE 553
"GAS STATION"
N/F
ELEFTHERIA HRONIS &
ANTIGONI NICOLAOU
VOLUME 1235, PAGE 165
VOLUME 418, PAGE 516
"RESTAURANT"
EXISTING BUILDING
"ALDI GROCERY STORE"
124 BOSTON
POST ROAD
2,496 SF±
BLDG HT 16.3'±
OVERHANG
WHEEL
STOPS
CL&P 5216
W/RISER &
TRANSF
BITUMINOUS
SIDEWALK
BITUMINOUS
SIDEWALK
12" HDPE
12"
HDPE
12" HDPE
15" HDPE
18" HDPE
12" HDPE
8" HDPE
15" HDPE
18" HDPE
15" HDPE
24" HDPE
15" HDPE
SUBSURFACE
INFILTRATION
(TAKEN FROM
SITE PLAN)
15" HDPE
12" HDPE
24" RCP
24" RCP
12" HDPE
15" HDPE
12" HDPE
12" HDPE
RAMP
CROSSWALK
METAL BEAM
GUIDERAIL
MINER LANE
BOSTON POST ROAD (US ROUTE 1)
C
L
100' BUFFER
DMH 3
R=73.32
I=66.59(W)
I=67.39(SW)
I=66.29(S)
PROPOSED
2,325 S.F.
T
POA-2
DISTURBANCE WITHIN
100' OF WETLAND
(±623 SF)
72
75
75
75
75
73
78
75
76
77
75
76
77
76
75
74
73
72
71
71
72
73
74
76
73
74
74
71
POA-1
POA-3
\\FS3\Projects\CT\Waterford\Kincora Development\122-124 Boston Post Road\Cp\Xref\KINCORA LOGO.jpg
RJO'CONNELL
& ASSOCIATES, INC.
CIVIL ENGINEERS, SURVEYORS
& LAND PLANNERS
AREA BEING
MODIFIED
POINT OF
ANALYSIS
BEING
AFFECTED
This Page Intentionally Left Blank
APPENDIX A
Hydrological Computations
Pre-Development Hydrological Computations
Approved-Development Hydrological Computations
Post-Development Hydrological Computations
This Page Intentionally Left Blank
APPENDIX A
Pre-Development Hydrological Computations
EX-1
To drainage swale along
southern property line
EX-2
Majority of Site
EX-3
NE Area by Bank
POA-1
Drainage Swale at
South PL
POA-2
East PL
POA-3
NE CB to Infiltration
Routing Diagram for Existing Conditions
Prepared by RJ O'Connell & Associates, Inc., Printed 6/28/2016
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Subcat
Reach
Pond
Link
14051: Pre-Development Analysis
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 2
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Area Listing (all nodes)
Area
(acres)
CN
Description
(subcatchment-numbers)
0.065
61
>75% Grass cover, Good, HSG B (EX-1, EX-2)
0.834
80
>75% Grass cover, Good, HSG D (EX-1, EX-2, EX-3)
2.473
98
Paved parking, HSG D (EX-2)
0.605
98
Roofs, HSG D (EX-1, EX-2, EX-3)
0.067
60
Woods, Fair, HSG B (EX-1, EX-2)
4.044
93
TOTAL AREA
14051: Pre-Development Analysis
Type III 24-hr 1-Year Rainfall=2.70"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 3
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.911 ac 51.04% Impervious Runoff Depth>1.48"
Subcatchment EX-1: To drainage swale
Tc=6.0 min CN=87 Runoff=1.55 cfs 0.112 af
Runoff Area=3.012 ac 84.00% Impervious Runoff Depth>2.16"
Subcatchment EX-2: Majority of Site
Tc=6.0 min CN=95 Runoff=7.12 cfs 0.541 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth>1.88"
Subcatchment EX-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.26 cfs 0.019 af
Inflow=1.55 cfs 0.112 af
Link POA-1: Drainage Swale at South PL
Primary=1.55 cfs 0.112 af
Inflow=7.12 cfs 0.541 af
Link POA-2: East PL
Primary=7.12 cfs 0.541 af
Inflow=0.26 cfs 0.019 af
Link POA-3: NE CB to Infiltration
Primary=0.26 cfs 0.019 af
Total Runoff Area = 4.044 ac Runoff Volume = 0.672 af Average Runoff Depth = 1.99"
23.89% Pervious = 0.966 ac 76.11% Impervious = 3.078 ac
14051: Pre-Development Analysis
Type III 24-hr 1-Year Rainfall=2.70"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 8
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: East PL
Inflow Area =
3.012 ac, 84.00% Impervious, Inflow Depth > 2.16" for 1-Year event
Inflow
=
7.12 cfs @ 12.09 hrs, Volume=
0.541 af
Primary
=
7.12 cfs @ 12.09 hrs, Volume=
0.541 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Link POA-2: East PL
Inflow
Primary
Hydrograph
Time (hours)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
7
6
5
4
3
2
1
0
Inflow Area=3.012 ac
7.12 cfs
7.12 cfs
14051: Pre-Development Analysis
Type III 24-hr 2-Year Rainfall=3.40"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 10
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.911 ac 51.04% Impervious Runoff Depth>2.09"
Subcatchment EX-1: To drainage swale
Tc=6.0 min CN=87 Runoff=2.18 cfs 0.159 af
Runoff Area=3.012 ac 84.00% Impervious Runoff Depth>2.84"
Subcatchment EX-2: Majority of Site
Tc=6.0 min CN=95 Runoff=9.23 cfs 0.713 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth>2.54"
Subcatchment EX-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.34 cfs 0.026 af
Inflow=2.18 cfs 0.159 af
Link POA-1: Drainage Swale at South PL
Primary=2.18 cfs 0.159 af
Inflow=9.23 cfs 0.713 af
Link POA-2: East PL
Primary=9.23 cfs 0.713 af
Inflow=0.34 cfs 0.026 af
Link POA-3: NE CB to Infiltration
Primary=0.34 cfs 0.026 af
Total Runoff Area = 4.044 ac Runoff Volume = 0.897 af Average Runoff Depth = 2.66"
23.89% Pervious = 0.966 ac 76.11% Impervious = 3.078 ac
14051: Pre-Development Analysis
Type III 24-hr 2-Year Rainfall=3.40"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 15
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: East PL
Inflow Area =
3.012 ac, 84.00% Impervious, Inflow Depth > 2.84" for 2-Year event
Inflow
=
9.23 cfs @ 12.09 hrs, Volume=
0.713 af
Primary
=
9.23 cfs @ 12.09 hrs, Volume=
0.713 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Link POA-2: East PL
Inflow
Primary
Hydrograph
Time (hours)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.012 ac
9.23 cfs
9.23 cfs
14051: Pre-Development Analysis
Type III 24-hr 10-Year Rainfall=5.00"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 17
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.911 ac 51.04% Impervious Runoff Depth>3.56"
Subcatchment EX-1: To drainage swale
Tc=6.0 min CN=87 Runoff=3.66 cfs 0.271 af
Runoff Area=3.012 ac 84.00% Impervious Runoff Depth>4.42"
Subcatchment EX-2: Majority of Site
Tc=6.0 min CN=95 Runoff=14.00 cfs 1.109 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth>4.09"
Subcatchment EX-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.54 cfs 0.041 af
Inflow=3.66 cfs 0.271 af
Link POA-1: Drainage Swale at South PL
Primary=3.66 cfs 0.271 af
Inflow=14.00 cfs 1.109 af
Link POA-2: East PL
Primary=14.00 cfs 1.109 af
Inflow=0.54 cfs 0.041 af
Link POA-3: NE CB to Infiltration
Primary=0.54 cfs 0.041 af
Total Runoff Area = 4.044 ac Runoff Volume = 1.420 af Average Runoff Depth = 4.21"
23.89% Pervious = 0.966 ac 76.11% Impervious = 3.078 ac
14051: Pre-Development Analysis
Type III 24-hr 10-Year Rainfall=5.00"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 22
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: East PL
Inflow Area =
3.012 ac, 84.00% Impervious, Inflow Depth > 4.42" for 10-Year event
Inflow
=
14.00 cfs @ 12.09 hrs, Volume=
1.109 af
Primary
=
14.00 cfs @ 12.09 hrs, Volume=
1.109 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Link POA-2: East PL
Inflow
Primary
Hydrograph
Time (hours)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.012 ac
14.00 cfs
14.00 cfs
14051: Pre-Development Analysis
Type III 24-hr 25-Year Rainfall=5.70"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 24
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.911 ac 51.04% Impervious Runoff Depth>4.23"
Subcatchment EX-1: To drainage swale
Tc=6.0 min CN=87 Runoff=4.31 cfs 0.321 af
Runoff Area=3.012 ac 84.00% Impervious Runoff Depth>5.11"
Subcatchment EX-2: Majority of Site
Tc=6.0 min CN=95 Runoff=16.07 cfs 1.283 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth>4.77"
Subcatchment EX-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.62 cfs 0.048 af
Inflow=4.31 cfs 0.321 af
Link POA-1: Drainage Swale at South PL
Primary=4.31 cfs 0.321 af
Inflow=16.07 cfs 1.283 af
Link POA-2: East PL
Primary=16.07 cfs 1.283 af
Inflow=0.62 cfs 0.048 af
Link POA-3: NE CB to Infiltration
Primary=0.62 cfs 0.048 af
Total Runoff Area = 4.044 ac Runoff Volume = 1.652 af Average Runoff Depth = 4.90"
23.89% Pervious = 0.966 ac 76.11% Impervious = 3.078 ac
14051: Pre-Development Analysis
Type III 24-hr 25-Year Rainfall=5.70"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 29
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: East PL
Inflow Area =
3.012 ac, 84.00% Impervious, Inflow Depth > 5.11" for 25-Year event
Inflow
=
16.07 cfs @ 12.09 hrs, Volume=
1.283 af
Primary
=
16.07 cfs @ 12.09 hrs, Volume=
1.283 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Link POA-2: East PL
Inflow
Primary
Hydrograph
Time (hours)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.012 ac
16.07 cfs
16.07 cfs
14051: Pre-Development Analysis
Type III 24-hr 100-Year Rainfall=7.10"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 31
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.911 ac 51.04% Impervious Runoff Depth>5.57"
Subcatchment EX-1: To drainage swale
Tc=6.0 min CN=87 Runoff=5.60 cfs 0.423 af
Runoff Area=3.012 ac 84.00% Impervious Runoff Depth>6.50"
Subcatchment EX-2: Majority of Site
Tc=6.0 min CN=95 Runoff=20.19 cfs 1.632 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth>6.15"
Subcatchment EX-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.79 cfs 0.062 af
Inflow=5.60 cfs 0.423 af
Link POA-1: Drainage Swale at South PL
Primary=5.60 cfs 0.423 af
Inflow=20.19 cfs 1.632 af
Link POA-2: East PL
Primary=20.19 cfs 1.632 af
Inflow=0.79 cfs 0.062 af
Link POA-3: NE CB to Infiltration
Primary=0.79 cfs 0.062 af
Total Runoff Area = 4.044 ac Runoff Volume = 2.117 af Average Runoff Depth = 6.28"
23.89% Pervious = 0.966 ac 76.11% Impervious = 3.078 ac
14051: Pre-Development Analysis
Type III 24-hr 100-Year Rainfall=7.10"
Existing Conditions
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 36
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: East PL
Inflow Area =
3.012 ac, 84.00% Impervious, Inflow Depth > 6.50" for 100-Year event
Inflow
=
20.19 cfs @ 12.09 hrs, Volume=
1.632 af
Primary
=
20.19 cfs @ 12.09 hrs, Volume=
1.632 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Link POA-2: East PL
Inflow
Primary
Hydrograph
Time (hours)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.012 ac
20.19 cfs
20.19 cfs
This Page Intentionally Left Blank
APPENDIX A
Approved-Development Hydrological Computations
PR-1
Area along southern
part of property
PR-2A
Retail "C"
PR-2B1
Parking Area for Retail
"A" & "B"
PR-2B2
Canopy for Retail "A" &
"B" Roof
PR-2B3
CB-8 & CB-9
PR-2B4
NE Corner along Miner
Lane
PR-2C1
CB-7 & Retail "A"
PR-2C2
PR-2C2
PR-3
NE Area by Bank
1P
Infiltration Field 1
2P
Infiltration Field 2
3P
Infiltration Field 3
EDMH
EDMH
Miner Ln
Miner Lane
POA-1
Drainage Swale at
Southeast Corner
POA-2
EX CB in Miner Lane
POA-3
NE CB to Infiltration
Routing Diagram for Proposed Conditions-Current
Prepared by RJ O'Connell & Associates, Inc., Printed 6/28/2016
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Subcat
Reach
Pond
Link
AREA & INFILTRATION
SYSTEM BEING MODIFIED
POINT OF ANALYSIS
BEING AFFECTED
14051: Post-Development Analysis
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 2
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Area Listing (all nodes)
Area
(acres)
CN
Description
(subcatchment-numbers)
0.212
61
>75% Grass cover, Good, HSG B (PR-1, PR-2C2)
0.813
80
>75% Grass cover, Good, HSG D (PR-1, PR-2B1, PR-2B3, PR-2B4, PR-2C2, PR-3)
2.302
98
Pavement (PR-1, PR-2B1, PR-2B3, PR-2B4, PR-2C1, PR-3)
0.736
98
Roof (PR-2A, PR-2B2, PR-2C1)
4.063
92
TOTAL AREA
14051: Post-Development Analysis
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 3
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.396 ac 13.13% Impervious Runoff Depth=0.87"
Subcatchment PR-1: Area along southern
Tc=6.0 min CN=77 Runoff=0.38 cfs 0.029 af
Runoff Area=0.099 ac 100.00% Impervious Runoff Depth=2.47"
Subcatchment PR-2A: Retail "C"
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.25 cfs 0.020 af
Runoff Area=2.302 ac 87.45% Impervious Runoff Depth=2.26"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=5.60 cfs 0.433 af
Runoff Area=0.202 ac 100.00% Impervious Runoff Depth=2.47"
Subcatchment PR-2B2: Canopy for Retail
Tc=6.0 min CN=98 Runoff=0.51 cfs 0.042 af
Runoff Area=0.116 ac 81.03% Impervious Runoff Depth=2.16"
Subcatchment PR-2B3: CB-8 & CB-9
Tc=6.0 min CN=95 Runoff=0.27 cfs 0.021 af
Runoff Area=0.183 ac 6.56% Impervious Runoff Depth=1.09"
Subcatchment PR-2B4: NE Corner along
Tc=6.0 min CN=81 Runoff=0.22 cfs 0.017 af
Runoff Area=0.483 ac 100.00% Impervious Runoff Depth=2.47"
Subcatchment PR-2C1: CB-7 & Retail "A"
Tc=6.0 min CN=98 Runoff=1.23 cfs 0.099 af
Runoff Area=0.161 ac 0.00% Impervious Runoff Depth=0.52"
Subcatchment PR-2C2: PR-2C2
Tc=6.0 min CN=69 Runoff=0.08 cfs 0.007 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth=1.88"
Subcatchment PR-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.26 cfs 0.019 af
Peak Elev=69.20' Storage=175 cf Inflow=0.25 cfs 0.020 af
Pond 1P: Infiltration Field 1
Discarded=0.07 cfs 0.020 af Primary=0.00 cfs 0.000 af Outflow=0.07 cfs 0.020 af
Peak Elev=62.40' Storage=8,446 cf Inflow=6.12 cfs 0.475 af
Pond 2P: Infiltration Field 2
Discarded=0.44 cfs 0.475 af Primary=0.00 cfs 0.000 af Outflow=0.44 cfs 0.475 af
Peak Elev=60.27' Storage=1,343 cf Inflow=1.23 cfs 0.099 af
Pond 3P: Infiltration Field 3
Discarded=0.18 cfs 0.099 af Primary=0.00 cfs 0.000 af Outflow=0.18 cfs 0.099 af
Inflow=0.27 cfs 0.021 af
Link EDMH: EDMH
Primary=0.27 cfs 0.021 af
Inflow=0.50 cfs 0.037 af
Link Miner Ln: Miner Lane
Primary=0.50 cfs 0.037 af
Inflow=0.38 cfs 0.029 af
Link POA-1: Drainage Swale at Southeast Corner
Primary=0.38 cfs 0.029 af
Inflow=0.57 cfs 0.044 af
Link POA-2: EX CB in Miner Lane
Primary=0.57 cfs 0.044 af
14051: Post-Development Analysis
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 26
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.87% Impervious, Inflow Depth = 0.15" for 1-Year event
Inflow
=
0.57 cfs @ 12.10 hrs, Volume=
0.044 af
Primary
=
0.57 cfs @ 12.10 hrs, Volume=
0.044 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Inflow Area=3.546 ac
0.57 cfs
0.57 cfs
14051: Post-Development Analysis
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 28
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.396 ac 13.13% Impervious Runoff Depth=1.36"
Subcatchment PR-1: Area along southern
Tc=6.0 min CN=77 Runoff=0.61 cfs 0.045 af
Runoff Area=0.099 ac 100.00% Impervious Runoff Depth=3.17"
Subcatchment PR-2A: Retail "C"
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.32 cfs 0.026 af
Runoff Area=2.302 ac 87.45% Impervious Runoff Depth=2.95"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=7.20 cfs 0.565 af
Runoff Area=0.202 ac 100.00% Impervious Runoff Depth=3.17"
Subcatchment PR-2B2: Canopy for Retail
Tc=6.0 min CN=98 Runoff=0.65 cfs 0.053 af
Runoff Area=0.116 ac 81.03% Impervious Runoff Depth=2.84"
Subcatchment PR-2B3: CB-8 & CB-9
Tc=6.0 min CN=95 Runoff=0.36 cfs 0.027 af
Runoff Area=0.183 ac 6.56% Impervious Runoff Depth=1.63"
Subcatchment PR-2B4: NE Corner along
Tc=6.0 min CN=81 Runoff=0.34 cfs 0.025 af
Runoff Area=0.483 ac 100.00% Impervious Runoff Depth=3.17"
Subcatchment PR-2C1: CB-7 & Retail "A"
Tc=6.0 min CN=98 Runoff=1.56 cfs 0.127 af
Runoff Area=0.161 ac 0.00% Impervious Runoff Depth=0.89"
Subcatchment PR-2C2: PR-2C2
Tc=6.0 min CN=69 Runoff=0.15 cfs 0.012 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth=2.54"
Subcatchment PR-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.34 cfs 0.026 af
Peak Elev=69.42' Storage=261 cf Inflow=0.32 cfs 0.026 af
Pond 1P: Infiltration Field 1
Discarded=0.07 cfs 0.026 af Primary=0.00 cfs 0.000 af Outflow=0.07 cfs 0.026 af
Peak Elev=62.82' Storage=9,488 cf Inflow=7.85 cfs 0.619 af
Pond 2P: Infiltration Field 2
Discarded=0.44 cfs 0.541 af Primary=2.05 cfs 0.078 af Outflow=2.50 cfs 0.619 af
Peak Elev=60.87' Storage=1,855 cf Inflow=1.56 cfs 0.127 af
Pond 3P: Infiltration Field 3
Discarded=0.19 cfs 0.127 af Primary=0.00 cfs 0.000 af Outflow=0.19 cfs 0.127 af
Inflow=2.16 cfs 0.105 af
Link EDMH: EDMH
Primary=2.16 cfs 0.105 af
Inflow=2.29 cfs 0.130 af
Link Miner Ln: Miner Lane
Primary=2.29 cfs 0.130 af
Inflow=0.61 cfs 0.045 af
Link POA-1: Drainage Swale at Southeast Corner
Primary=0.61 cfs 0.045 af
Inflow=2.36 cfs 0.142 af
Link POA-2: EX CB in Miner Lane
Primary=2.36 cfs 0.142 af
14051: Post-Development Analysis
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 29
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Inflow=0.34 cfs 0.026 af
Link POA-3: NE CB to Infiltration
Primary=0.34 cfs 0.026 af
Total Runoff Area = 4.063 ac Runoff Volume = 0.907 af Average Runoff Depth = 2.68"
25.23% Pervious = 1.025 ac 74.77% Impervious = 3.038 ac
14051: Post-Development Analysis
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 51
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.87% Impervious, Inflow Depth = 0.48" for 2-Year event
Inflow
=
2.36 cfs @ 12.39 hrs, Volume=
0.142 af
Primary
=
2.36 cfs @ 12.39 hrs, Volume=
0.142 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
2
1
0
Inflow Area=3.546 ac
2.36 cfs
2.36 cfs
14051: Post-Development Analysis
Type III 24-hr 10-Year Rainfall=5.00"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 53
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.396 ac 13.13% Impervious Runoff Depth=2.62"
Subcatchment PR-1: Area along southern
Tc=6.0 min CN=77 Runoff=1.19 cfs 0.087 af
Runoff Area=0.099 ac 100.00% Impervious Runoff Depth=4.76"
Subcatchment PR-2A: Retail "C"
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.47 cfs 0.039 af
Runoff Area=2.302 ac 87.45% Impervious Runoff Depth=4.53"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=10.82 cfs 0.869 af
Runoff Area=0.202 ac 100.00% Impervious Runoff Depth=4.76"
Subcatchment PR-2B2: Canopy for Retail
Tc=6.0 min CN=98 Runoff=0.96 cfs 0.080 af
Runoff Area=0.116 ac 81.03% Impervious Runoff Depth=4.42"
Subcatchment PR-2B3: CB-8 & CB-9
Tc=6.0 min CN=95 Runoff=0.54 cfs 0.043 af
Runoff Area=0.183 ac 6.56% Impervious Runoff Depth=2.99"
Subcatchment PR-2B4: NE Corner along
Tc=6.0 min CN=81 Runoff=0.63 cfs 0.046 af
Runoff Area=0.483 ac 100.00% Impervious Runoff Depth=4.76"
Subcatchment PR-2C1: CB-7 & Retail "A"
Tc=6.0 min CN=98 Runoff=2.31 cfs 0.192 af
Runoff Area=0.161 ac 0.00% Impervious Runoff Depth=1.96"
Subcatchment PR-2C2: PR-2C2
Tc=6.0 min CN=69 Runoff=0.35 cfs 0.026 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth=4.09"
Subcatchment PR-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.54 cfs 0.041 af
Peak Elev=69.98' Storage=468 cf Inflow=0.47 cfs 0.039 af
Pond 1P: Infiltration Field 1
Discarded=0.08 cfs 0.039 af Primary=0.00 cfs 0.000 af Outflow=0.08 cfs 0.039 af
Peak Elev=63.32' Storage=10,594 cf Inflow=11.78 cfs 0.950 af
Pond 2P: Infiltration Field 2
Discarded=0.45 cfs 0.647 af Primary=9.78 cfs 0.303 af Outflow=10.23 cfs 0.950 af
Peak Elev=62.30' Storage=2,930 cf Inflow=2.31 cfs 0.192 af
Pond 3P: Infiltration Field 3
Discarded=0.22 cfs 0.186 af Primary=0.36 cfs 0.006 af Outflow=0.58 cfs 0.192 af
Inflow=10.20 cfs 0.345 af
Link EDMH: EDMH
Primary=10.20 cfs 0.345 af
Inflow=10.71 cfs 0.391 af
Link Miner Ln: Miner Lane
Primary=10.71 cfs 0.391 af
Inflow=1.19 cfs 0.087 af
Link POA-1: Drainage Swale at Southeast Corner
Primary=1.19 cfs 0.087 af
Inflow=11.00 cfs 0.423 af
Link POA-2: EX CB in Miner Lane
Primary=11.00 cfs 0.423 af
14051: Post-Development Analysis
Type III 24-hr 10-Year Rainfall=5.00"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 54
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Inflow=0.54 cfs 0.041 af
Link POA-3: NE CB to Infiltration
Primary=0.54 cfs 0.041 af
Total Runoff Area = 4.063 ac Runoff Volume = 1.423 af Average Runoff Depth = 4.20"
25.23% Pervious = 1.025 ac 74.77% Impervious = 3.038 ac
14051: Post-Development Analysis
Type III 24-hr 10-Year Rainfall=5.00"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 76
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.87% Impervious, Inflow Depth = 1.43" for 10-Year event
Inflow
=
11.00 cfs @ 12.15 hrs, Volume=
0.423 af
Primary
=
11.00 cfs @ 12.15 hrs, Volume=
0.423 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.546 ac
11.00 cfs
11.00 cfs
14051: Post-Development Analysis
Type III 24-hr 25-Year Rainfall=5.70"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 78
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.396 ac 13.13% Impervious Runoff Depth=3.22"
Subcatchment PR-1: Area along southern
Tc=6.0 min CN=77 Runoff=1.46 cfs 0.106 af
Runoff Area=0.099 ac 100.00% Impervious Runoff Depth=5.46"
Subcatchment PR-2A: Retail "C"
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.54 cfs 0.045 af
Runoff Area=2.302 ac 87.45% Impervious Runoff Depth=5.23"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=12.39 cfs 1.003 af
Runoff Area=0.202 ac 100.00% Impervious Runoff Depth=5.46"
Subcatchment PR-2B2: Canopy for Retail
Tc=6.0 min CN=98 Runoff=1.10 cfs 0.092 af
Runoff Area=0.116 ac 81.03% Impervious Runoff Depth=5.11"
Subcatchment PR-2B3: CB-8 & CB-9
Tc=6.0 min CN=95 Runoff=0.62 cfs 0.049 af
Runoff Area=0.183 ac 6.56% Impervious Runoff Depth=3.61"
Subcatchment PR-2B4: NE Corner along
Tc=6.0 min CN=81 Runoff=0.76 cfs 0.055 af
Runoff Area=0.483 ac 100.00% Impervious Runoff Depth=5.46"
Subcatchment PR-2C1: CB-7 & Retail "A"
Tc=6.0 min CN=98 Runoff=2.63 cfs 0.220 af
Runoff Area=0.161 ac 0.00% Impervious Runoff Depth=2.48"
Subcatchment PR-2C2: PR-2C2
Tc=6.0 min CN=69 Runoff=0.45 cfs 0.033 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth=4.77"
Subcatchment PR-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.62 cfs 0.048 af
Peak Elev=70.24' Storage=562 cf Inflow=0.54 cfs 0.045 af
Pond 1P: Infiltration Field 1
Discarded=0.09 cfs 0.045 af Primary=0.00 cfs 0.000 af Outflow=0.09 cfs 0.045 af
Peak Elev=63.60' Storage=11,079 cf Inflow=13.49 cfs 1.095 af
Pond 2P: Infiltration Field 2
Discarded=0.45 cfs 0.685 af Primary=10.92 cfs 0.410 af Outflow=11.36 cfs 1.095 af
Peak Elev=62.38' Storage=2,982 cf Inflow=2.63 cfs 0.220 af
Pond 3P: Infiltration Field 3
Discarded=0.23 cfs 0.199 af Primary=0.88 cfs 0.021 af Outflow=1.10 cfs 0.220 af
Inflow=11.44 cfs 0.460 af
Link EDMH: EDMH
Primary=11.44 cfs 0.460 af
Inflow=12.56 cfs 0.515 af
Link Miner Ln: Miner Lane
Primary=12.56 cfs 0.515 af
Inflow=1.46 cfs 0.106 af
Link POA-1: Drainage Swale at Southeast Corner
Primary=1.46 cfs 0.106 af
Inflow=13.00 cfs 0.569 af
Link POA-2: EX CB in Miner Lane
Primary=13.00 cfs 0.569 af
14051: Post-Development Analysis
Type III 24-hr 25-Year Rainfall=5.70"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 79
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Inflow=0.62 cfs 0.048 af
Link POA-3: NE CB to Infiltration
Primary=0.62 cfs 0.048 af
Total Runoff Area = 4.063 ac Runoff Volume = 1.652 af Average Runoff Depth = 4.88"
25.23% Pervious = 1.025 ac 74.77% Impervious = 3.038 ac
14051: Post-Development Analysis
Type III 24-hr 25-Year Rainfall=5.70"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 101
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.87% Impervious, Inflow Depth = 1.93" for 25-Year event
Inflow
=
13.00 cfs @ 12.12 hrs, Volume=
0.569 af
Primary
=
13.00 cfs @ 12.12 hrs, Volume=
0.569 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.546 ac
13.00 cfs
13.00 cfs
14051: Post-Development Analysis
Type III 24-hr 100-Year Rainfall=7.10"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 103
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.396 ac 13.13% Impervious Runoff Depth=4.46"
Subcatchment PR-1: Area along southern
Tc=6.0 min CN=77 Runoff=2.02 cfs 0.147 af
Runoff Area=0.099 ac 100.00% Impervious Runoff Depth=6.86"
Subcatchment PR-2A: Retail "C"
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.67 cfs 0.057 af
Runoff Area=2.302 ac 87.45% Impervious Runoff Depth=6.62"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=15.52 cfs 1.271 af
Runoff Area=0.202 ac 100.00% Impervious Runoff Depth=6.86"
Subcatchment PR-2B2: Canopy for Retail
Tc=6.0 min CN=98 Runoff=1.37 cfs 0.115 af
Runoff Area=0.116 ac 81.03% Impervious Runoff Depth=6.51"
Subcatchment PR-2B3: CB-8 & CB-9
Tc=6.0 min CN=95 Runoff=0.78 cfs 0.063 af
Runoff Area=0.183 ac 6.56% Impervious Runoff Depth=4.90"
Subcatchment PR-2B4: NE Corner along
Tc=6.0 min CN=81 Runoff=1.01 cfs 0.075 af
Runoff Area=0.483 ac 100.00% Impervious Runoff Depth=6.86"
Subcatchment PR-2C1: CB-7 & Retail "A"
Tc=6.0 min CN=98 Runoff=3.29 cfs 0.276 af
Runoff Area=0.161 ac 0.00% Impervious Runoff Depth=3.60"
Subcatchment PR-2C2: PR-2C2
Tc=6.0 min CN=69 Runoff=0.66 cfs 0.048 af
Runoff Area=0.121 ac 68.60% Impervious Runoff Depth=6.15"
Subcatchment PR-3: NE Area by Bank
Tc=6.0 min CN=92 Runoff=0.79 cfs 0.062 af
Peak Elev=70.84' Storage=758 cf Inflow=0.67 cfs 0.057 af
Pond 1P: Infiltration Field 1
Discarded=0.10 cfs 0.057 af Primary=0.00 cfs 0.000 af Outflow=0.10 cfs 0.057 af
Peak Elev=64.52' Storage=12,412 cf Inflow=16.90 cfs 1.386 af
Pond 2P: Infiltration Field 2
Discarded=0.45 cfs 0.751 af Primary=11.80 cfs 0.635 af Outflow=12.25 cfs 1.386 af
Peak Elev=62.57' Storage=3,093 cf Inflow=3.29 cfs 0.276 af
Pond 3P: Infiltration Field 3
Discarded=0.23 cfs 0.224 af Primary=2.53 cfs 0.051 af Outflow=2.76 cfs 0.275 af
Inflow=12.39 cfs 0.698 af
Link EDMH: EDMH
Primary=12.39 cfs 0.698 af
Inflow=13.29 cfs 0.772 af
Link Miner Ln: Miner Lane
Primary=13.29 cfs 0.772 af
Inflow=2.02 cfs 0.147 af
Link POA-1: Drainage Swale at Southeast Corner
Primary=2.02 cfs 0.147 af
Inflow=16.18 cfs 0.872 af
Link POA-2: EX CB in Miner Lane
Primary=16.18 cfs 0.872 af
14051: Post-Development Analysis
Type III 24-hr 100-Year Rainfall=7.10"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 104
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Inflow=0.79 cfs 0.062 af
Link POA-3: NE CB to Infiltration
Primary=0.79 cfs 0.062 af
Total Runoff Area = 4.063 ac Runoff Volume = 2.114 af Average Runoff Depth = 6.24"
25.23% Pervious = 1.025 ac 74.77% Impervious = 3.038 ac
14051: Post-Development Analysis
Type III 24-hr 100-Year Rainfall=7.10"
Proposed Conditions-Current
Printed 6/28/2016
Prepared by RJ O'Connell & Associates, Inc.
Page 126
HydroCAD® 10.00-12 s/n 04881 © 2014 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.87% Impervious, Inflow Depth = 2.95" for 100-Year event
Inflow
=
16.18 cfs @ 12.16 hrs, Volume=
0.872 af
Primary
=
16.18 cfs @ 12.16 hrs, Volume=
0.872 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=3.546 ac
16.18 cfs
16.18 cfs
This Page Intentionally Left Blank
APPENDIX A
Post-Development Hydrological Computations
PR-1
Area along southern
part of property
PR-2A
Chipotle & Parking for
Chipotle
PR-2B1
Parking Area for Retail
"A"
PR-2B3
CB-8 & CB-9
PR-2B4
NE Corner along Miner
Lane
PR-2C1
CB-7 & Retail "A"
PR-2C2
PR-2C2
PR-3
NE Area by Bank
1P
Infiltration Field 1
2P
Infiltration Field 2
3P
Infiltration Field 3
EDMH
EDMH
Miner Ln
Miner Lane
POA-1
Drainage Swale at
Southeast Corner
POA-2
EX CB in Miner Lane
POA-3
NE CB to Infiltration
Routing Diagram for Proposed Conditions-Chipotle
Prepared by RJ O'Connell & Associates, Printed 6/22/2023
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Subcat
Reach
Pond
Link
AREA & INFILTRATION
SYSTEM MODIFIED
POINT OF ANALYSIS
AFFECTED
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 3
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Area Listing (all nodes)
Area
(acres)
CN
Description
(subcatchment-numbers)
0.212
61
>75% Grass cover, Good, HSG B (PR-1, PR-2C2)
0.812
80
>75% Grass cover, Good, HSG D (PR-1, PR-2B1, PR-2B3, PR-2B4, PR-2C2, PR-3)
0.111
98
Paved parking, HSG D (PR-2A)
2.440
98
Pavement (PR-1, PR-2B1, PR-2B3, PR-2B4, PR-2C1, PR-3)
0.488
98
Roof (PR-2A, PR-2C1)
4.063
92
TOTAL AREA
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 6
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.164 ac 100.00% Impervious Runoff Depth=2.47"
Subcatchment PR-2A: Chipotle & Parking
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.42 cfs 0.034 af
Runoff Area=2.439 ac 88.19% Impervious Runoff Depth=2.26"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=5.94 cfs 0.459 af
Peak Elev=70.53' Storage=656 cf Inflow=0.42 cfs 0.034 af
Pond 1P: Infiltration Field 1
Discarded=0.03 cfs 0.034 af Primary=0.00 cfs 0.000 af Outflow=0.03 cfs 0.034 af
Inflow=0.57 cfs 0.044 af
Link POA-2: EX CB in Miner Lane
Primary=0.57 cfs 0.044 af
Total Runoff Area = 2.603 ac Runoff Volume = 0.493 af Average Runoff Depth = 2.27"
11.06% Pervious = 0.288 ac 88.94% Impervious = 2.315 ac
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 7
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Subcatchment PR-2A: Chipotle & Parking for Chipotle
Runoff
=
0.42 cfs @ 12.09 hrs, Volume=
0.034 af, Depth= 2.47"
Routed to Pond 1P : Infiltration Field 1
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Type III 24-hr 1-Year Rainfall=2.70"
Area (ac)
CN
Description
*
0.053
98
Roof
0.111
98
Paved parking, HSG D
0.164
98
Weighted Average
0.164
98
100.00% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
6.0
25
0.07
Direct Entry, Direct
Subcatchment PR-2A: Chipotle & Parking for Chipotle
Runoff
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
0.46
0.44
0.42
0.4
0.38
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.22
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
Type III 24-hr
1-Year Rainfall=2.70"
Runoff Area=0.164 ac
Runoff Volume=0.034 af
Runoff Depth=2.47"
Flow Length=25'
Tc=6.0 min
CN=98
0.42 cfs
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 8
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Subcatchment PR-2B1: Parking Area for Retail "A"
Runoff
=
5.94 cfs @ 12.09 hrs, Volume=
0.459 af, Depth= 2.26"
Routed to Pond 2P : Infiltration Field 2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Type III 24-hr 1-Year Rainfall=2.70"
Area (ac)
CN
Description
*
2.151
98
Pavement
0.288
80
>75% Grass cover, Good, HSG D
2.439
96
Weighted Average
0.288
80
11.81% Pervious Area
2.151
98
88.19% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
6.0
Direct Entry, Direct
Subcatchment PR-2B1: Parking Area for Retail "A"
Runoff
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
6
5
4
3
2
1
0
Type III 24-hr
1-Year Rainfall=2.70"
Runoff Area=2.439 ac
Runoff Volume=0.459 af
Runoff Depth=2.26"
Tc=6.0 min
CN=96
5.94 cfs
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 9
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Pond 1P: Infiltration Field 1
Inflow Area =
0.164 ac,100.00% Impervious, Inflow Depth = 2.47" for 1-Year event
Inflow
=
0.42 cfs @ 12.09 hrs, Volume=
0.034 af
Outflow
=
0.03 cfs @ 13.47 hrs, Volume=
0.034 af, Atten= 93%, Lag= 82.9 min
Discarded =
0.03 cfs @ 13.47 hrs, Volume=
0.034 af
Primary
=
0.00 cfs @
0.00 hrs, Volume=
0.000 af
Routed to Pond 2P : Infiltration Field 2
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Peak Elev= 70.53' @ 13.47 hrs Surf.Area= 487 sf Storage= 656 cf
Plug-Flow detention time= 216.1 min calculated for 0.034 af (100% of inflow)
Center-of-Mass det. time= 215.9 min ( 976.1 - 760.1 )
Volume
Invert
Avail.Storage
Storage Description
#1A
68.50'
458 cf
15.75'W x 30.92'L x 3.50'H Field A
1,704 cf Overall - 560 cf Embedded = 1,145 cf x 40.0% Voids
#2A
69.00'
560 cf
ADS_StormTech SC-740 x 12 Inside #1
Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf
Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap
Row Length Adjustment= +0.44' x 6.45 sf x 3 rows
1,018 cf
Total Available Storage
Storage Group A created with Chamber Wizard
Device
Routing
Invert
Outlet Devices
#1
Discarded
68.50'
1.500 in/hr Exfiltration over Surface area
Conductivity to Groundwater Elevation = 65.50'
#2
Primary
71.20'
4.0' long x 0.5' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
#3
Primary
70.70'
6.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads
Discarded OutFlow Max=0.03 cfs @ 13.47 hrs HW=70.53' (Free Discharge)
1=Exfiltration ( Controls 0.03 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=68.50' (Free Discharge)
2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
3=Orifice/Grate ( Controls 0.00 cfs)
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 10
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Pond 1P: Infiltration Field 1 - Chamber Wizard Field A
Chamber Model = ADS_StormTech SC-740 (ADS StormTech® SC-740 without end caps)
Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf
Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap
Row Length Adjustment= +0.44' x 6.45 sf x 3 rows
51.0" Wide + 6.0" Spacing = 57.0" C-C Row Spacing
4 Chambers/Row x 7.12' Long +0.44' Row Adjustment = 28.92' Row Length +12.0" End Stone x 2 =
30.92' Base Length
3 Rows x 51.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 15.75' Base Width
6.0" Stone Base + 30.0" Chamber Height + 6.0" Stone Cover = 3.50' Field Height
12 Chambers x 45.9 cf +0.44' Row Adjustment x 6.45 sf x 3 Rows = 559.8 cf Chamber Storage
1,704.4 cf Field - 559.8 cf Chambers = 1,144.6 cf Stone x 40.0% Voids = 457.8 cf Stone Storage
Chamber Storage + Stone Storage = 1,017.6 cf = 0.023 af
Overall Storage Efficiency = 59.7%
Overall System Size = 30.92' x 15.75' x 3.50'
12 Chambers
63.1 cy Field
42.4 cy Stone
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 11
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Pond 1P: Infiltration Field 1
Inflow
Outflow
Discarded
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
0.46
0.44
0.42
0.4
0.38
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.22
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
Inflow Area=0.164 ac
Peak Elev=70.53'
Storage=656 cf
0.42 cfs
0.03 cfs
0.03 cfs
0.00 cfs
Type III 24-hr 1-Year Rainfall=2.70"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 12
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Link POA-2: EX CB in Miner Lane
Inflow Area =
3.546 ac, 81.90% Impervious, Inflow Depth = 0.15" for 1-Year event
Inflow
=
0.57 cfs @ 12.10 hrs, Volume=
0.044 af
Primary
=
0.57 cfs @ 12.10 hrs, Volume=
0.044 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Link POA-2: EX CB in Miner Lane
Inflow
Primary
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Inflow Area=3.546 ac
0.57 cfs
0.57 cfs
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 13
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Time span=0.00-30.00 hrs, dt=0.05 hrs, 601 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=0.164 ac 100.00% Impervious Runoff Depth=3.17"
Subcatchment PR-2A: Chipotle & Parking
Flow Length=25' Tc=6.0 min CN=98 Runoff=0.53 cfs 0.043 af
Runoff Area=2.439 ac 88.19% Impervious Runoff Depth=2.95"
Subcatchment PR-2B1: Parking Area for
Tc=6.0 min CN=96 Runoff=7.63 cfs 0.599 af
Peak Elev=70.89' Storage=771 cf Inflow=0.53 cfs 0.043 af
Pond 1P: Infiltration Field 1
Discarded=0.03 cfs 0.039 af Primary=0.11 cfs 0.004 af Outflow=0.14 cfs 0.043 af
Inflow=2.11 cfs 0.135 af
Link POA-2: EX CB in Miner Lane
Primary=2.11 cfs 0.135 af
Total Runoff Area = 2.603 ac Runoff Volume = 0.642 af Average Runoff Depth = 2.96"
11.06% Pervious = 0.288 ac 88.94% Impervious = 2.315 ac
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 14
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Subcatchment PR-2A: Chipotle & Parking for Chipotle
Runoff
=
0.53 cfs @ 12.09 hrs, Volume=
0.043 af, Depth= 3.17"
Routed to Pond 1P : Infiltration Field 1
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Type III 24-hr 2-Year Rainfall=3.40"
Area (ac)
CN
Description
*
0.053
98
Roof
0.111
98
Paved parking, HSG D
0.164
98
Weighted Average
0.164
98
100.00% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
6.0
25
0.07
Direct Entry, Direct
Subcatchment PR-2A: Chipotle & Parking for Chipotle
Runoff
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Type III 24-hr
2-Year Rainfall=3.40"
Runoff Area=0.164 ac
Runoff Volume=0.043 af
Runoff Depth=3.17"
Flow Length=25'
Tc=6.0 min
CN=98
0.53 cfs
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 15
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Subcatchment PR-2B1: Parking Area for Retail "A"
Runoff
=
7.63 cfs @ 12.09 hrs, Volume=
0.599 af, Depth= 2.95"
Routed to Pond 2P : Infiltration Field 2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Type III 24-hr 2-Year Rainfall=3.40"
Area (ac)
CN
Description
*
2.151
98
Pavement
0.288
80
>75% Grass cover, Good, HSG D
2.439
96
Weighted Average
0.288
80
11.81% Pervious Area
2.151
98
88.19% Impervious Area
Tc
Length
Slope
Velocity
Capacity
Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
6.0
Direct Entry, Direct
Subcatchment PR-2B1: Parking Area for Retail "A"
Runoff
Hydrograph
Time (hours)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Flow (cfs)
8
7
6
5
4
3
2
1
0
Type III 24-hr
2-Year Rainfall=3.40"
Runoff Area=2.439 ac
Runoff Volume=0.599 af
Runoff Depth=2.95"
Tc=6.0 min
CN=96
7.63 cfs
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 16
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Summary for Pond 1P: Infiltration Field 1
Inflow Area =
0.164 ac,100.00% Impervious, Inflow Depth = 3.17" for 2-Year event
Inflow
=
0.53 cfs @ 12.09 hrs, Volume=
0.043 af
Outflow
=
0.14 cfs @ 12.46 hrs, Volume=
0.043 af, Atten= 74%, Lag= 22.3 min
Discarded =
0.03 cfs @ 12.46 hrs, Volume=
0.039 af
Primary
=
0.11 cfs @ 12.46 hrs, Volume=
0.004 af
Routed to Pond 2P : Infiltration Field 2
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs
Peak Elev= 70.89' @ 12.46 hrs Surf.Area= 487 sf Storage= 771 cf
Plug-Flow detention time= 214.0 min calculated for 0.043 af (100% of inflow)
Center-of-Mass det. time= 213.9 min ( 969.1 - 755.1 )
Volume
Invert
Avail.Storage
Storage Description
#1A
68.50'
458 cf
15.75'W x 30.92'L x 3.50'H Field A
1,704 cf Overall - 560 cf Embedded = 1,145 cf x 40.0% Voids
#2A
69.00'
560 cf
ADS_StormTech SC-740 x 12 Inside #1
Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf
Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap
Row Length Adjustment= +0.44' x 6.45 sf x 3 rows
1,018 cf
Total Available Storage
Storage Group A created with Chamber Wizard
Device
Routing
Invert
Outlet Devices
#1
Discarded
68.50'
1.500 in/hr Exfiltration over Surface area
Conductivity to Groundwater Elevation = 65.50'
#2
Primary
71.20'
4.0' long x 0.5' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
#3
Primary
70.70'
6.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads
Discarded OutFlow Max=0.03 cfs @ 12.46 hrs HW=70.89' (Free Discharge)
1=Exfiltration ( Controls 0.03 cfs)
Primary OutFlow Max=0.10 cfs @ 12.46 hrs HW=70.89' (Free Discharge)
2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
3=Orifice/Grate (Orifice Controls 0.10 cfs @ 1.49 fps)
Type III 24-hr 2-Year Rainfall=3.40"
Proposed Conditions-Chipotle
Printed 6/22/2023
Prepared by RJ O'Connell & Associates
Page 17
HydroCAD® 10.10-7a s/n 04881 © 2021 HydroCAD Software Solutions LLC
Pond 1P: Infiltration Field 1 - Chamber Wizard Field A
Chamber Model = ADS_StormTech SC-740 (ADS StormTech® SC-740 without end caps)
Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf
Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap
Row Length Adjustment= +0.44' x 6.45 sf x 3 rows
51.0" Wide + 6.0" Spacing = 57.0" C-C Row Spacing
4 Chambers/Row x 7.12' Long +0.44' Row Adjustment = 28.92' Row Length +12.0" End Stone x 2 =
30.92' Base Length
3 Rows x 51.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 15.75' Ba