HomeMy WebLinkAboutParcel Map No. 19382 Drainage StudyPrepared By:
WestechCollege
Drainage Study
Hydrology and Hydraulics
Parcel Map No. 19382
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Preparation Date: July 26, 2012
Projection Engineering, Inc.
1230 Cedar Street
Ramona, CA 92065
Phone: 760-443-6504
Paul Fisher
Projection Engineering, Inc.
Preparation Date: 7/26/2012 Job Number: 120202
Prepared For:
Dix Development, Inc.
30100 Town Center Drive,
Suite 0-449
Laguna Niguel, CA 92677
(949) 499-6096
APPMWED
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RCE 71549
1 of 28
Westech College
TABLE OF CONTENTS
Water Quality Management Plan Main Report
Section 1 — Project Overview and Methodology
Section 2 — Hydrology Data
Section 3 — TR-55 Modeling (Existing Condition)
Section 4 — TR-55 Modeling (Proposed Condition)
Section 5 — Water Quality
Page 3-5
Page 6
Page 7-11
Page 12-17
Page 18
Attachments
ATTACHMENT 'A' — EXHIBITS
• EXHIBIT 'A' — VICINITY MAP
• EXHIBIT 'B' — LEGAL DESCRIPTION
• EXHIBIT 'C' — ASSESSOR'S PARCEL MAP
• EXHIBIT 'D' — HYDROLOGIC SOIL GROUP
ATTACHMENT
•
ATTACHMENT
ATTACHMENT
ATTACHMENT
References
'B' — TABLES
EXHIBIT `E' — NOAA TABLE
EXHIBIT 'F' — CURVE NUMBERS
`C' — FLOOD INSURANCE RATE MAP
— EXISTING CONDITION DRAINAGE EXHIBIT
`E' — PROPOSED CONDITION DRAINAGE EXHIBIT
FEMA
http://www.fema.gov/
NOAA
http://www.noaa.gov/
San Bernardino County
http://www.sbcountv.gov/dpw/floodcontrol/water resources.asp
WinTR-55 Modeling
http://www.nres.usda.gov/wps/portal/nres/detailfull/national/technical/alphabetical/water/hvdroloq
v/?&cid=stelprdb1042901
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Preparation Date: 7/26/2012 Job Number: 120202
Section 1 — Project Overview and Methodology
Project Information
Name of Project: Westech College
Project Location: Latitude: 34° 4'54.11 "N, Longitude: 117°26'12.36"W
Owner Name: Brent Dix, Dix Development, Inc.
Owner Address: 30100 Town Center Drive, Suite 0-449, Laguna Niguel, CA 92677
Owner Phone: (949) 499-6096
Project Address: 9460 Sierra Avenue, Fontana, CA 92335
Assessor Parcel Numbers: 0193-234-11, 0193-234-12
Project Overview (Subdivision Gross Acreage = 4.53 Acres)
Westech College is an educational development on Parcel 1 (2.01 Ac.) of PM No. 19282 and Parcel 2
PMB 95/80-81 (0.38 Ac.) This study includes a portion of Parcel 2 of PM No. 19282 (2.01 Ac.) remaining
undeveloped. The project site is located West of Sierra Ave, East of Olive St, North of Holly Dr, and South
of Fontlee Lane in the City of Fontana, this area drains naturally to the Southwest.
Storm Water Compliance (Parcel Map No. 19382)
This drainage study has been prepared to analyze and address the storm water requirements of the City
of Fontana, County of San Bernardino.
Drainage Concept
The drainage concept for the subject project is to maintain local drainage patterns, decrease flows from
pre to post construction, minimize impacts to downstream waterways, and avoid cross -lot drainage. An
approved WQMP has been established for the project which introduces BMP water quality measures to
promote infiltration and reduce pollutants. Some minor adjacent flows affect the site from the north under
the existing condition; they have been added to this study in the proposed condition. The northwesterly 1
acre of parcel 2 will not be redeveloped with this project; existing flows will drain to Olive St. Future Parcel
2 development will require a standalone WQMP and drainage study. 0.27 acres of frontage flows for the
project will sheet flow to Sierra Ave. In order to determine the relative increase of flows from the existing
to developed conditions, it is necessary to have similar drainage boundaries and areas. Therefore, when
calculating the existing flow rates and volumes, the drainage boundary is assumed to the same as the
developed. This insures that any change in the calculated flow rate and volume leaving the property is
only a result of the proposed development or change in land use. It should be noted that is the more
conservative method because if the minor offsite tributaries were included when calculating the existing
flow rates and volume they would be larger and the relative increase would appear to be smaller. See
hydrology exhibits for existing and proposed condition drainage water conveyance.
•
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Methodology
This report is prepared using Win TR-55 Small Watershed Hydrology software. WinTR-55 is a single
event rainfall -runoff small watershed model. The model applies to both urban and agricultural areas
generating hydrographs from land areas and at selected points along the stream system. Multiple sub-
areas can be modeled within a watershed. Design flows from the proposed building roof will be piped to
infiltration pits where it is assumed all drainage will infiltrate, roof sub -areas have not been added to the
model. TR-55 User Guide: ftp://ftp.wcc.nres.usda.qov/wntsc/H&H/WinTR55/WinTR55UserGuide.pdf
Design Results Summary
As shown in the following calculations, post construction runoff rates will be reduced in comparison to
pre -construction runoff rates. Also to meet the suggested storm water quality treatment the required BMP
flow is 0.60 cfs. This study indicates that the existing condition storm water runoff rate is 15.61 cfs and
the proposed condition storm water runoff rate is 12.64 cfs. The grading plans prepared for this project
have used the design findings herein and the proposed onsite improvements meet the specifications of
this report.
The following is a manning's formula and channel geometry for the cobble lined/vegetated conveyance
channel which conveys the projects storm water to Olive Street:
(Manning's Equation)
1.486
Q=
AR2/3V J
Provide Trapezoidal Chan. Variables
Flow Depth - d(in)
Manning's N n(unitless)
Longitudinal Slope - S(ft/ft)
Side Slope - Z(ft/ft)
Bottom Width - W(ft)
14
0.025
0.007 _.
Eng. Units I Units I Values
Velocity ftis 3.637
Wetted Perimeter ft 6.217
Wetted Area sq.ft 3.889
Hydraulic Radius ft 0.6255
Calculated Flow cfs 14.14
*Channel depth increased by 2" to account for flow
within the cobble section.
100-Year: QExISTING = 15.61 cfs < QPR0POSED = 12.64 cfs
< QSWALE CAPACITY = 14.14 cfs
NORTH
10' EASEMENT
SOUTH
EX/SONG
AC PAVING
TO REMAIN
PROPOSES WOVEN GE07EX17LE
FILTER FABRIC, MUST BE POROUS
TO PROMOTE /NFIL IRA770N
N01f.
SEE PLAN NEW FOR
SPECIFIC SLOPE AND
GRADE INFORMATION
Projection Engineering, Inc.
50'
//\\
20'
7/
/.0'
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GROUND
/\
MINIMALLY COMPACTED
SUBGRADE UNDER SWALE
7S DETAIL 2 : TYPICAL SECTION — COBBLE,—LINED/VEGETATED SIWALE
HORIZONTAL SCALE' 1' = 1'
VERTICAL SCALE.
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Westech College
Preparation Date: 7/26/2012 Job Number: 120202
The following is a manning's formula and channel geometry for the SPPWC Parkway Drain,
Standard Plan No. 151-1. See grading plans for specific size and geometry for the construction of
the drainage structure. This drainage conveyance channel will convey the projects storm water to
the existing Olive Street gutter:
(Manning's Equation)
1.486
Q= AR2/3-67
?2
Provide Rectangular Channel Variables
Flow Depth -d(in) 4
Mannings - n(unitless) 0.013
Longitudinal Slope - S(ft/ft) .02
Chann Bottom Width -W(ft) ' 3.5
Eng. Units Units Values
Velocity ft/s 6.939
Wetted Perimeter I ft 4.167
Wetted Area sq.ft 1.167
Hydraulic Radius
Calculated Flow
ft 0.2801
cfs 8.098
25-Year: —PROPOSED = 7.51 cfs
< QCURDOUTLET CAPACITY = 8.098 cfs
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Preparation Date: 7/26/2012 Job Number: 120202
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Section 2 — Hydrology Data
Design Storm Event
Per the NOAA precipitation chart (Exhibit 'E')
For the purpose of this study the 100-year 24-hour storm event is used to determine storm runoff rates
and volumes.
Existing Conditions and Proposed Conditions
P = 6.41 Inches
Tributary Area
Onsite areas only at 2.67 Acres
Hydrologic Soil Group and Antecedent Moisture Condition (AMC)
Per the San Bernardino County Hydrology Manual figure C-13 on page C-26 (Exhibit `D' in this study)
The entire site is classified as soil group 'A' for having soils with high infiltration rates and low runoff
potential. A percolation test report was compiled by Earth -Strata, Inc. on February 29, 2012 which
indicated that highly permeable ground material consisting of sand and gravel were present throughout
the site using 3 to 5 feet boring depths. The percolation test ranged from 2 to 7 minutes per second
(mpi).infiltration rate range was measured at 2-7 mpi with a recommended design rate of 7.0 mpi (8.6
in/hr). Although field data is preferable, soil group 'A' is also indicated on the county soil maps.
NRCS Runoff Curve Number (CN) added to TR-55 model
Per the San Bernardino County Hydrology Manual "Actual impervious cover for developed areas" Figure
C-4 page C-8. (Exhibit 'F' - Page 23 of 28 in this study)
Existing and Proposed Conditions
CN = 90, Commercial developed with approximately 85 percent impervious surface.
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Section 3 — TR-55 Modeling (Existing Condition)
WinTR-55 Current Data Description
--- Identification Data ---
User: Projection Date: 6/27/2012
Project: Westech College Units: English
SubTitle: Existing Condition Areal Units: Acres
State: California
County: San Bernardino
Filename: K:\Personal\Projection Engineering, Inc\Projects\120202 - Westech
College\Engineering\H&H\Hydrology\TR-55\Westech Existing.w55
--- Sub -Area Data --
Name Description Reach Area(ac) RCN Tc
1A Initial Area Reach 1 0.75 90 0.1
1 B 2nd Area Reach 2 0.45 90 0.1
1 C 3rd Area Outlet 0.34 90 0.1
2A Initial Area Reach 3 0.7 90 0.1
2B Second Area Reach 4 1.32 90 0.1
2C Third Area Outlet 0.26 90 0.1
Total area: 3.82 (ac)
--- Storm Data --
Rainfall Depth by Rainfall Return Period
2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
(in) (in) (in) (in) (in) (in) (in)
2.78 3.62 4.28 5.14 5.78 6.41 2.12
Storm Data Source: User -provided custom storm data
Rainfall Distribution Type: Type I
Dimensionless Unit Hydrograph: <standard> (See Exhibit `E' for Storm Data)
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Watershed Peak Table
Sub -Area Peak Flow by Rainfall Return Period
or Reach 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)
SUBAREAS
1 A 1.05 1.51 1.88 2.36 2.72 3.07 0.69
1 B 0.63 0.91 1.13 1.41 1.63 1.84 0.41
1 C 0.47 0.69 0.85 1.07 1.23 1.39 0.31
2A 0.98 1.41 1.75 2.20 2.53 2.86 0.64
2B 1.85 2.67 3.32 4.16 4.79 5.40 1.22
2C 0.37 0.53 0.66 0.83 0.95 1.08 0.24
REACHES
Reach 1 1.05 1.51 1.88 2.36 2.72 3.07 0.69
Down 1.05 1.51 1.88 2.36 2.72 3.07 0.69
Reach 2 1.68 2.42 3.01 3.78 4.34 4.90 1.10
Down 1.67 2.42 3.01 3.77 4.34 4.90 1.10
Reach 3 0.98 1.41 1.75 2.20 2.53 2.86 0.64
Down 0.98 1.41 1.75 2.20 2.53 2.86 0.64
Reach 4 2.82 4.07 5.07 6.36 7.32 8.25 1.86
Down 2.82 4.07 5.06 6.35 7.31 8.25 1.86
OUTLET 5.33 7.70 9.58 12.02 13.83 15.61 3.51
Hydrograph Peak/Peak Time Table
Sub -Area Peak Flow and Peak Time (hr) by Rainfall Return Period
or Reach ANALYSIS: 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)
(hr) (hr) (hr) (hr) (hr) (hr) (hr)
SUBAREAS
1 A 1.05 1.51 1.88 2.36 2.72 3.07 0.69
9.93 9.93 9.93 9.93 9.93 9.93 9.93
1 B 0.63 0.91 1.13 1.41 1.63 1.84 0.41
9.93 9.93 9.93 9.93 9.93 9.93 9.93
1 C 0.47 0.69 0.85 1.07 1.23 1.39 0.31
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2A 0.98 1.41 1.75 2.20 2.53 2.86 0.64
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2B 1.85 2.67 3.32 4.16 4.79 5.40 1.22
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2C 0.37 0.53 0.66 0.83 0.95 1.08 0.24
9.93 9.93 9.93 9.93 9.93 9.93 9.93
REACHES
Reach 1 1.05 1.51 1.88 2.36 2.72 3.07 0.69
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 1.05 1.51 1.88 2.36 2.72 3.07 0.69
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Reach 2 1.68 2.42 3.01 3.78 4.34 4.90 1.10
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 1.67 2.42 3.01 3.77 4.34 4.90 1.10
9.94 9.94 9.94 9.94 9.94 9.94 9.94
Reach 3 0.98 1.41 1.75 2.20 2.53 2.86 0.64
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9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 0.98 1.41 1.75 2.20 2.53 2.86 0.64
9.93 9.94 9.94 9.94 9.94 9.93 9.94
Reach 4 2.82 4.07 5.07 6.36 7.32 8.25 1.86
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 2.82 4.07 5.06 6.35 7.31 8.25 1.86
9.94 9.94 9.94 9.94 9.94 9.93 9.94
OUTLET 5.33 7.70 9.58 12.02 13.83 15.61 3.51
Sub -Area Summary Table
Sub -Area Drainage Time of Curve Receiving Sub -Area
Identifier Area Concentration Number Reach Description
(ac) (hr)
1A
1B
1C
2A
2B
2C
.75 0.100
.45 0.100
.34 0.100
.70 0.100
1.32 0.100
.26 0.100
Total Area: 3.82 (ac)
90 Reach 1 Initial Area
90 Reach 2 2nd Area
90 Outlet 3rd Area
90 Reach 3 Initial Area
90 Reach 4 Second Area
90 Outlet Third Area
Reach Summary Table
Receiving Reach Routing
Reach Reach Length Method
Identifier Identifier (ft)
Reach 1
Reach 2
Reach 3
Reach 4
Reach 2 129 CHANNEL
Outlet 257 CHANNEL
Reach 4 219 CHANNEL
Outlet 239 CHANNEL
Sub -Area Time of Concentration Details
Sub -Area Flow Mannings's End Wetted Travel
Identifier/ Length Slope n Area Perimeter Velocity Time
(ft) (ft/ft) (sq ft) (ft) (ft/sec) (hr)
1A
SHEET 100 0.0069 0.011
SHALLOW 145 0.0069 0.025
Time of Concentration
1B
SHEET 100 0.0093 0.011
SHALLOW 129 0.0093 0.050
Time of Concentration
1C
SHEET 100 0.0116 0.011
SHALLOW 257 0.0116 0.025
Time of Concentration
0.033
0.024
0.1
0.029
0.023
0.1
0.027
0.033
0.1
2A
SHEET 100 0.0065 0.011 0.034
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SHALLOW
2B
SHEET
SHALLOW
2C
SHEET
SHALLOW
153 0.0065 0.025
Time of Concentration
100 0.0091 0.011
219 0.0091 0.025
Time of Concentration
100 0.0125 0.011
239 0.0125 0.025
Time of Concentration
0.026
0.1
0.030
0.031
0.1
0.026
0.029
0.1
Sub -Area Land Use and Curve Number Details
Sub -Area Hydrologic Sub -Area Curve
Identifier Land Use Soil Area Number
Group (ac)
1A CN directly entered by user
Total Area / Weighted Curve Number
1B CN directly entered by user
.75 90
.75 90
.45 90
Total Area / Weighted Curve Number .45 90
1 C CN directly entered by user
Total Area / Weighted Curve Number
2A CN directly entered by user .7 90
Total Area / Weighted Curve Number .7 90
2B CN directly entered by user
.34 90
.34 90
1.32 90
Total Area / Weighted Curve Number 1.32 90
2C CN directly entered by user .26 90
Total Area / Weighted Curve Number .26 90
Reach Channel Rating Details
Reach Reach Reach Friction Bottom Side
Identifier Length Manning's Slope Width Slope
(ft) n (ft/ft) (ft)
Reach 1
Reach 2
Reach 3
Reach 4
129
257
219
239
0.013
0.013
0.013
0.013
0.0093
0.0116
0.0091
0.0125
30
30
30
30
20 :1
20 :1
20 :1
20 :1
Reach End Top Friction
Identifier Stage Flow Area Width Slope
(ft) (cfs) (sq ft) (ft) (ft/ft)
Reach 1 0.0 0.000 0 30 0.0093
0.5 119.649 20 50
1.0 440.212 50 70
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2.0 1811.363 140 110
5.0 14312.197 650 230
10.0 77484.487 2300 430
20.0 450208.702 8600 830
Reach 2 0.0 0.000 0 30 0.0116
0.5 133.628 20 50
1.0 491.642 50 70
2.0 2022.987 140 110
5.0 15984.307 650 230
10.0 86537.089 2300 430
20.0 502807.104 8600 830
Reach 3 0.0 0.000 0 30 0.0091
0.5 118.355 20 50
1.0 435.453 50 70
2.0 1791.781 140 110
5.0 14157.466 650 230
10.0 76646.793 2300 430
20.0 445341.438 8600 830
Reach 4 0.0 0.000 0 30 0.0125
0.5 138.715 20 50
1.0 510.358 50 70
2.0 2099.999 140 110
5.0 16592.806 650 230
10.0 89831.427 2300 430
20.0 521948.216 8600 830
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Section 4 — TR-55 Modeling (Proposed Condition)
WinTR-55 Current Data Description
--- Identification Data ---
User: Projection Date: 6/27/2012
Project: Westech College Units: English
SubTitle: Proposed Condition REV 1 Areal Units: Acres
State: California
County: San Bernardino
Filename: K:\Personal\Projection Engineering, Inc\Projects\120202 - Westech
College\Engineering\H&H\Hydrology\TR-55\Westech Proposed.w55
--- Sub -Area Data ---
Name Description Reach Area(ac) RCN Tc
1A Initial Area Reach 1 0.24 90 0.149
1 B Second Area Reach 5 0.32 90 0.100
2A Initial Area Reach 2 0.15 90 0.100
2B Second Area Reach 3 0.2 90 0.1
2C Third Reach 5 0.74 90 .101
3A Initial Area Reach 4 0.07 90 0.100
3B Second Area Reach 3 0.22 90 0.100
4A Initial Area Outlet 0.09 76 .259
5A Initial Area Reach 6 0.71 71 .21
5B Second Area Outlet 0.86 90 0.100
Total area: 3.60 (ac)
--- Storm Data
Rainfall Depth by Rainfall Return Period
2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
(in) (in) (in) (in) (in) (in) (in)
2.78 3.62 4.28 5.14 5.78 6.41 2.12
Storm Data Source: User -provided custom storm data (See Exhibit `E' for Storm Data)
Rainfall Distribution Type: Type I
Dimensionless Unit Hydrograph: <standard>
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Watershed Peak Table
Sub -Area Peak Flow by Rainfall Return Period
or Reach 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)
SUBAREAS
1 A 0.31 0.45 0.56 0.71 0.82 0.92 0.21
1 B 0.45 0.65 0.80 1.01 1.16 1.31 0.30
2A 0.21 0.30 0.37 0.46 0.53 0.60 0.14
2B 0.28 0.40 0.50 0.63 0.72 0.81 0.18
2C 1.04 1.50 1.86 2.34 2.69 3.04 0.68
3A 0.10 0.14 0.18 0.22 0.26 0.29 0.06
3B 0.30 0.44 0.55 0.69 0.79 0.89 0.20
4A .00 0.07 0.10 0.14 0.18 0.21 .00
5A 0.20 0.44 0.66 0.98 1.22 1.48 0.06
5B 1.20 1.73 2.16 2.71 3.11 3.52 0.79
REACHES
Reach 1 0.31 0.45 0.56 0.71 0.82 0.92 0.21
Down 0.31 0.45 0.56 0.71 0.82 0.92 0.21
Reach 2 0.21 0.30 0.37 0.46 0.53 0.60 0.14
Down 0.21 0.30 0.37 0.46 0.53 0.60 0.14
Reach 3 0.89 1.28 1.59 2.00 2.30 2.59 0.58
Down 0.89 1.28 1.59 2.00 2.30 2.59 0.58
Reach 4 0.10 0.14 0.18 0.22 0.26 0.29 0.06
Down 0.10 0.14 0.18 0.22 0.26 0.29 0.06
Reach 5 2.67 3.85 4.79 6.01 6.92 7.81 1.76
Down 2.66 3.85 4.78 6.00 6.91 7.79 1.75
Reach 6 0.20 0.44 0.66 0.98 1.22 1.48 0.06
Down 0.20 0.44 0.66 0.98 1.22 1.48 0.06
25-YR 100-YR
OUTLET 3.98 5.94 7.51 9.56 11.11 12.64 2.53
Hydrograph Peak/Peak Time Table
Sub -Area Peak Flow and Peak Time (hr) by Rainfall Return Period
or Reach ANALYSIS: 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr
Identifier (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)
(hr) (hr) (hr) (hr) (hr) (hr) (hr)
SUBAREAS
1 A 0.31 0.45 0.56 0.71 0.82 0.92 0.21
9.96 9.96 9.96 9.96 9.96 9.96 9.97
1 B 0.45 0.65 0.80 1.01 1.16 1.31 0.30
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2A 0.21 0.30 0.37 0.46 0.53 0.60 0.14
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2B 0.28 0.40 0.50 0.63 0.72 0.81 0.18
9.93 9.93 9.93 9.93 9.93 9.93 9.93
2C 1.04 1.50 1.86 2.34 2.69 3.04 0.68
9.93 9.93 9.93 9.93 9.93 9.93 9.93
3A 0.10 0.14 0.18 0.22 0.26 0.29 0.06
9.93 9.93 9.93 9.93 9.93 9.93 9.93
3B 0.30 0.44 0.55 0.69 0.79 0.89 0.20
9.93 9.93 9.93 9.93 9.93 9.93 9.93
4A .00 0.07 0.10 0.14 0.18 0.21 .00
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n/a 10.05 10.05 10.06 10.06 10.05 n/a
5A 0.20 0.44 0.66 0.98 1.22 1.48 0.06
10.06 10.04 10.03 10.02 10.02 10.02 10.09
5B 1.20 1.73 2.16 2.71 3.11 3.52 0.79
9.93 9.93 9.93 9.93 9.93 9.93 9.93
REACHES
Reach 1 0.31 0.45 0.56 0.71 0.82 0.92 0.21
9.96 9.96 9.96 9.96 9.96 9.96 9.97
Down 0.31 0.45 0.56 0.71 0.82 0.92 0.21
9.96 9.96 9.96 9.96 9.97 9.96 9.97
Reach 2 0.21 0.30 0.37 0.46 0.53 0.60 0.14
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 0.21 0.30 0.37 0.46 0.53 0.60 0.14
9.93 9.94 9.93 9.94 9.94 9.93 9.93
Reach 3 0.89 1.28 1.59 2.00 2.30 2.59 0.58
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 0.89 1.28 1.59 2.00 2.30 2.59 0.58
9.94 9.94 9.94 9.94 9.94 9.93 9.94
Reach 4 0.10 0.14 0.18 0.22 0.26 0.29 0.06
9.93 9.93 9.93 9.93 9.93 9.93 9.93
Down 0.10 0.14 0.18 0.22 0.26 0.29 0.06.
9.93 9.94 9.93 9.94 9.93 9.93 9.88
Reach 5 2.67, 3.85 4.79 6.01 6.92 7.81 1.76
9.93 9.94 9.93 9.94 9.94 9.93 9.93
Down 2.66 3.85 4.78 6.00 6.91 7.79 1.75
9.95 9.95 9.95 9.95 9.95 9.95 9.95
Reach 6 0.20 0.44 0.66 0.98 1.22 1.48 0.06
10.06 10.04 10.03 10.02 10.02 10.02 10.09
Down 0.20 0.44 0.66 0.98 1.22 1.48 0.06
10.06 10.04 10.03 10.02 10.02 10.02 10.09
OUTLET 3.98 5.94 7.51 9.56 11.11 12.64 2.53
Sub -Area Summary Table
Sub -Area Drainage Time of Curve Receiving Sub -Area
Identifier Area Concentration Number Reach Description
(ac) (hr)
1A .24 0.149 90 Reach 1 Initial Area
1 B .32 0.100 90 Reach 5 Second Area
2A .15 0.100 90 Reach 2 Initial Area
2B .20 0.100 90 Reach 3 Second Area
2C .74 0.101 90 Reach 5 Third
3A .07 0.100 90 Reach 4 Initial Area
3B .22 0.100 90 Reach 3 Second Area
4A .09 0.259 76 Outlet Initial Area
5A .71 0.210 71 Reach 6 Initial Area
5B .86 0.100 90 Outlet Second Area
Total Area: 3.60 (ac)
Projection Engineering, Inc. 14 of 28 Westech College
Preparation Date: 7/26/2012 Job Number: 120202
Reach Summary Table
Receiving Reach Routing
Reach Reach Length Method
Identifier Identifier (ft)
Reach 1
Reach 2
Reach 3
Reach 4
Reach 5
Reach 6
Reach 5 106 CHANNEL
Reach 3 125 CHANNEL
Reach 5 101 CHANNEL
Reach 3 80 CHANNEL
Outlet 210 CHANNEL
Outlet 136 CHANNEL
Sub -Area Time of Concentration Details
Sub -Area Flow Mannings's End Wetted Travel
Identifier/ Length Slope n Area Perimeter Velocity Time
(ft) (ft/ft) (sq ft) (ft) (ft/sec) (hr)
1A
SHEET 50 0.0100 0.150 0.133
SHALLOW 130 0.0121 0.025 0.016
Time of Concentration 0.149
1B
SHEET 100 0.0118 0.011 0.027
CHANNEL 125 0.0064 0.013 0.10 1.60 1.447 0.024
Time of Concentration 0.100
2A
SHEET
CHANNEL
2B
SHEET
CHANNEL
2C
SHEET
CHANNEL
3A
SHEET
CHANNEL
3B
SHEET
CHANNEL
4A
SHEET
CHANNEL
100 0.0086 0.011
0.030
73 0.0051 0.013 0.10 1.60 1.267
Time of Concentration 0.100
0.016
100 0.0050 0.011 0.038
101 0.0050 0.013 0.10 1.60 1.275 0.022
Time of Concentration 0.1
100 0.0050 0.011 0.038
290 0.0050 0.013 0.20 3.20 1.279 0.063
Time of Concentration .101
50 0.0050 0.011 0.022
86 0.0050 0.013 0.10 1.60 1.257 0.019
Time of Concentration 0.100
100 0.0050 0.011 0.038
135 0.0050 0.013 0.20 3.20 1.293 0.029
Time of Concentration 0.100
1 0.0100 0.011 0.001
316 0.0070 0.250 3.15 5.60 0.340 0.258
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Time of Concentration .259
5A
SHEET 100 0.0181 0.150 0.182
SHALLOW 275 0.0181 0.025 0.028
Time of Concentration .21
5B
SHEET 100 0.0100 0.011 0.029
SHALLOW 393 0.0158 0.025 0.043
Time of Concentration 0.100
Sub -Area Land Use and Curve Number Details
Sub -Area Hydrologic Sub -Area Curve
Identifier Land Use Soil Area Number
Group (ac)
1A CN directly entered by user .24 90
Total Area / Weighted Curve Number .24 90
1 B CN directly entered by user .32 90
Total Area / Weighted Curve Number .32 90
2A CN directly entered by user .15 90
Total Area / Weighted Curve Number .15 90
2B CN directly entered by user .2 90
Total Area / Weighted Curve Number .2 90
2C CN directly entered by user .74 90
Total Area / Weighted Curve Number .74 90
3A CN directly entered by user .07 90
Total Area / Weighted Curve Number .07 90
3B CN directly entered by user .22 90
Total Area / Weighted Curve Number .22 90
4A CN directly entered by user .09 76
Total Area / Weighted Curve Number .09 76
5A Open space; grass cover < 50% (poor) A .61 68
Commercial & business A .1 89
Total Area / Weighted Curve Number .71 71
5B CN directly entered by user .86 90
Total Area / Weighted Curve Number .86 90
Reach Channel Rating Details
Reach Reach Reach Friction Bottom Side
Identifier Length Manning's Slope Width Slope
(ft) n (ft/ft) (ft)
Projection Engineering, Inc.
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Reach 1 106 0.013 0.0118 20 50 :1
Reach 2 125 0.013 0.0086 0.1 12 :1
Reach 3 101 0.013 0.005 0.1 12 :1
Reach 4 80 0.013 0.005 0.1 12 :1
Reach 5 210 0.013 0.005 0.1 12 :1
Reach 6 136 0.013 0.018 20 50 :1
Reach End Top Friction
Identifier Stage Flow Area Width Slope
(ft) (cfs) (sq ft) (ft) (ft/ft)
Reach 1 0.0 0.000 0 20 0.0118
0.5 131.083 22.5 70
1.0 606.751 70 120
2.0 3157.675 240 220
5.0 31660.287 1350 520
10.0 191234.022 5200 1020
20.0 1183337.16 20400 2020
Reach 2 0.0 0.000 0 0.1 0.0086
0.5 12.872 3.1 12.1
1.0 80.840 12.1 24.1
2.0 510.474 48.2 48.1
5.0 5857.367 300.5 120.1
10.0 37150.686 1201 240.1
20.0 235761.115 4802 480.1
Reach 3 0.0 0.000 0 0.1 0.005
0.5 9.815 3.1 12.1
1.0 61.640 12.1 24.1
2.0 389.232 48.2 48.1
5.0 4466.201 300.5 120.1
10.0 28327.132 1201 240.1
20.0 179766.165 4802 480.1
Reach 4 0.0 0.000 0 0.1 0.005
0.5 9.815 3.1 12.1
1.0 61.640 12.1 24.1
2.0 389.232 48.2 48.1
5.0 4466.201 300.5 120.1
10.0 28327.132 1201 240.1
20.0 179766.165 4802 480.1
Reach 5 0.0 0.000 0 0.1 0.005
0.5 9.815 3.1 12.1
1.0 61.640 12.1 24.1
2.0 389.232 48.2 48.1
5.0 4466.201 300.5 120.1
10.0 28327.132 1201 240.1
20.0 179766.165 4802 480.1
Reach 6 0.0 0.000 0 20 0.018
0.5 161.898 22.5 70
1.0 749.387 70 120
2.0 3899.983 240 220
5.0 39103.001 1350 520
10.0 236189.403 5200 1020
20.0 1461516.60 20400 2020
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1
Section 5 — Water Quality
t
Flow Based Calculations (Cobble LinedNegetated Swale)
BMP Drainage Area = 2.39 Acres
Area -averaged 2-year 1-hour rainfall value= 0.563" (See Attachment 'C' for NOAA Chart)
Pervious Areas Impervious Areas
CBMP = (0.42 Acres X 0.10) + (1.97 Acres X 0.80) = 0.81
2
Drainage Region = Valley: I = 0.2787"/hr (See Attachment B' for Regression Coefficients)
IBMP = 0.563" X 0.2787"/hr X 2.0 factor of safety = 0.31 "/hr
Q = (0.81) X (0.31"/hr) X (2.39 Ac.) = 0.60 CFS
(Manning's Equation)
1.486 Q _ AR,
PROVIDED n
Provide Trapezoidal Chan. Variables
Flow Depth - d(in)
Manning's N - n(unitless)
Longitudinal Slope - S(ft{ft)
Side Slope - Z(ftift)
Bottom thridth - W(ft)
12
.25
.01
k2
[1.2
QPROVIDED = 1.299 CFS > QREQUIRED = 0.60 CFS
Eng. Units
Units
Values
Velocity
ft's
0.4059
Wetted Perimeter
ft
5.672
Wetted Area
sq.ft `
3.200
Hydraulic Radius
ft
0.5642
QPROVIDED
cfs
1.299
Swale Length Required = (V) (tR) (60s/min) = (0.4059) (10 min) (60) = 243.54 ft.
Swale Length Provided = 317 ft
/ /
(AMC
AC PANNE
TO REMAIN
IN' (ASCMENr
POEMOSED PORN GESIN/ 'S
PATEN EANNIE WSrOE Pa1OJS
TO PROMOTE P 11IRARCW
Projection El
Preparation Date: 7/26/2012
SEC (AN NEW POP
£'ESIIC SIINN AND
CYAN YO(WNAnav
f
10'
/`� ` AOMMA(L i' CCWPALIED
SODC7ACE 5llO(R SWA[E
u DETAIL L:• TYPICAL SECTION - CODDLE-LI6ED/VECETATED STALE
ICRnCA( SCA(LI•- I'
Westech College
Job Number: 120202
ATTACHMENT 'A' — EXHIBITS
Projection Engineering, Inc.
Preparation Date: 7/26/2012
EXHIBIT 'A' - VICINITY MAP
RANDALL AVE
PROJECT SITE
9460 SIERRA AVE
FONTANA, CA 92335
SAN BERNARDINO AVE
Li i
Lu
VICINITY MAP
Westech College
19 of 28 Job Number: 120202
EXHIBIT 13' - LEGAL DESCRIPTION
LEGAL DESCRIPTION: Parcel 1 of Parcel Map No. 9118, in the City of Fontana, County of San
Bernardino, State of California, as per map recorded in book 95, pages 80 and 81, of parcel maps, in the
Office of the County Recorder of said County.
ius1 t-. i _;r +urt5t
EXHIBIT 'C' - ASSESSOR'S PARCEL MAP
Ptn, Semi -Tropic Land & Water. Co., Sub., S.B.L.
M.B. 11/12
1410 w'adoGty JYationcl9 F4tic ivsvruncc 4 ompaRy
66)
• ?) 8 •
1
C
Ct ' .I
•
G7; 12 A
ec
.,
I
2
(:)
.1,
---'4 F+FNE-11---- ---- SE3tEF—
et
▪ <s
• 23
V'
22
4
2f
24
---
}7
.r
19 18
dfEN{ E—
re48 ...
LJ
(7r 27 28
as
29
ea
34
31
32
yJ
33 34
"rrc dip 9:, I8, '.i )5139 8•
Jcnucry 2004 ryn fi ?17 N ;0/ t .2,
:a
Pin. S.E.t/L, Sec. 18
T.1S., R.50/.
City of Fontana
Tax Rare Area
10182
Assessor's Map
Book 0193 Poge 23
San Bernardino County
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0193-23
1111 um EXIT V' HLC JIMM "
SAN BERNARDINO COUNTY
HYDROLOGY MANUAL
C-I
G 2
SAN
BERRARDND
COUNTY
•
Co-N.
—a—
YAP
WINO
sat GROIN BOUNDARY
A SOIL GROUP DESIGNATION
BOUNDARY OF INDKATED SOURCE
SCA E .AGpoo
SCALE REDUCED BY 1/2
GROUP A: Low runoff potential. Soils
having high infiltration rates even when
thoroughly wetted and consisting cheifly of
deep well -drained sands or gravels. These
soils have a high rate of water transmission.
HYDROLOGIC SOILS GROUP MAP
FOR
SOUTHWEST -A AREA
Projection Engineering, Inc.
Preparation Date: 7/26/2012
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C-26
Westech College
Job Number: 120202
FIGURE C-I3
1
ATTACHMENT 'B' - TABLES
EXHIBIT `E' - NOAA TABLE
NOAA Atlas 14, Volume 6, Version 2
Location name: Fontana. California, US'
Coordinates: 34.0818,-117.4369
Elevatan:1179ft.
sC see: Gaffe flops
POINT PRECIPITATION FREQUENCY ESTIMATES
Fiala Pena. 5are Cretz. Saab Ham. L'laa Hier, Kazr,ru Malaria. Deborah htartn. 5art3a
PavIrmc. Isbati R c . C a1 Try9 a't$ . Goa Uhnn. Fe raj' 1 Ya1. M t-haat Yak/ a, Tat Zbac. Geot^ey
8at a. Dal elfirer+er. U-C!9enCbec1. Tye re z okJchnYar;ncen
MOM,, Material V.gatner Servee. 5tver Sprit g. l t ara"ai d
PF tabular I PF iraphr3I I Mars R aerial.;
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)/
Average recurrence interval (years)
Durati n
1
2
5
10
25
50
100
200
500
1000
5-min
0.113
p094-0ix:
0.147
(0123-0179)
0.195
?0167-0237;,(0193-02v6'
0235
0292
(0232-0371)
0.337
(0262-0436)
0.386
{0292-0514)
0.438
(0322-0600;
0.512
(0261-0732j
0.572
(0390-06.=9;
10 min
0.161
(0134-01E5
0.211
(0179-0256;
0.279
(0232-0340:
0.337
(0277-0413:
0.418
(0332-0531)
0.484
(0376-0.626)
0.553
(0419-0733)
0.627
(0462.-08M,
0.733
(0518-105)
0.820
(0559-127)
15 min
0.195
(0162-0.236:
0.25S
(0 213 -0 310;
0.338
(0 260-0 411',
0A07
(0 333-0 500:
0S06
(0 432-0643))
0.585
(0455-0 760)
0.669
(0 507-0 691)
0.759
(0 559-1 04)
0.887
p 626-1 27)
0.992
(0 676-1 47)
30 ruin
0.292
(0243-0354;
0.382
(0318-046&
0.505
(0419-0615:
0.609
(0501-0748;
0.756
(0601-0961)
0.875
(0633-114)
1.00
(0758-133)
1.13
(0836-1.56)
1.33
(0936--190)
1A8
(101-2.20)
60 min
0.430
(0358-0522:
0.563
(0460-0684;
0.744
(0618-0906;
0898
(0731-1.10)
1.12
(063--1.42)
1.29
(100-1.68)
147
(112-19e)
1.67
(1.23-229)
1.96
(133-266
2.19
(144)-324)
2-hr
0.644
(537-0761z
0.834
(0694-101)
1.09
0901-1.32)
1.30
(107-1.51)
1.58
(126-201)
1.81
(1.41-235)
2.05 -
(155-272)
229
(133-315)
2.64
(183-376)
2.91
(193-432)
3-hr
0.819
(0682-0993:
1.06 •
(0676-1.28)
1.37
(1 13-1 67)
1.62
(1 34-1 (0)
1.97
(157-251)
2.24
(1.74--291)
2.52
(1.91-33)
2.81
(2 07-3 65)
321
(226-459)
3.52
(243-522)
6 hr
1.18
(0E60-143)
1.52
(126-164)
1.95
(1.62-2333)
2.31
(190-283)
2.78
021-353)
3.14
(244-408)
3S1
(266-467)
3.88
(293-532)
4.38
(300-627)
4.77
(333-707)
12 hr•1S7
(131-191)
2.04
(169-247)
2.63
(218-320)
3.10
(255-380)
3.71
C295-472)
4.18
(325-543)
4.64
(352-618)
5.10
(376-699))
5.71
(403-81E)
6.18
(421-917)
24-ht
2.12
(188-2.44)
2.78
(243-321)
3.62
(319-419)
4.28
(375-4ea)
5.14
¢. 35-619)
5.78
(479-7.11)
6.41
F. 1. l_ +
7.03
(55:-91p
7.85
(594-10 6)
8A7
(619-11.8)
2-day
2S6t
(227-2.95)
3A4
(333-397)
4.S6
(402-528)
SAS
(477-633)
6.63
(561-798)
7.50
(6 23-9 23)
8.38
(679-106)
926
(7,29-120)
10A
(7,03-141)
11.3
(827-.158)
3-day
2.76 •
(244-310)
3.77
(333.435)
5.07
(447-535)
6.11
(535-713)
7.52
(6.37-906)
8.58
(7,12-106)
9.65
(7.81-12.2)
10.7 •
(643-139)
122
(9.22-16.4)
3 13
(974-18.6)
4-day
2.96
(2 62-3 41)
4.09
(362-4721
5.56
(490-6431
6.74
(5 90-7 87)
8.35
(707-101)
9.58
(795-116)
10.8
(878-136
12.1
(953-157)
132
(10 4-18 6)
15.1
(11.1-211)
7-day
3.36
(297-387)
4.72
(418-5.45)
6S1
(575-7.54)
7.98
(690-931)
9.97
(345-120)
11.5
(9.55-142)
13.1
(106-165)
14.7
(116-191)
16.9
(126-22. 6)
18.7
(137-2931)
10 day
3.63
(321-410
5.16
(453-5.96)
7.18
(633-831)
8.84
(7 74-10 3)
11.1
6)42-134)
12.9
(107-159)
14.7
(119-18e)
16.6
(131-2215)
192
(146-260)
21.3
(156-29.7)
4.35
625
881
11.0
14.0
16.3
18.8
21A
25.1
28.1
20• day
(3 85-5 01)
(553-7.21)
(777-102)
(959-128)
(118-168)
(135-201)
(152-237)
(169-277)
(190-339)
(205-391)
30day
5.12
(453-590)
• 7.36
(850-849)
10.4
(917-120)
13.0
(114-151)
16.6
(141-200)
19.5
(16.2-240)
226
(183-235)
25.9
(204-336)
30.6
(232-41 3)
34A
(352-431)
45 day
6.10
(5AO- 704)
8.65
(765-999)
122
(107-141)
15.2
(133-177)
19.5
(165-235)
23.0
(191-283)
26.8
(217-330
30.9
(243-400)
36.8
(776-496)
41,6
(334-531)
60 day
7.19
(637-629)
10.0
(867-116)
14.0
(12.3-162)
17.4
(152-20.3)
22.4
(190-270)
26.5
(220-326)
30.9
(250-38.9)
35.7
(281-462)
42.7 .
(3.''3-56)
' 48.6
(355-676)
Prociptoicn fregtancy (PF) c trrates in this table arc based on frec.crey araly-.isof pa-tial dtration series (POS)
Numbers in parmthesr. are FF estiratos at laver and upper bound: of he 90%, confidence interval The protatility that prezipiwion froqumcy trr r_; (for a
given d1ratim and arera3e recrrrerre interval) trill be greater than the upper bound (cr lesstfan ttr lower bould) is 5% E.sbrratrs at upper bound: are not
checked agairet probable maxirrrrr, precipitaten (Ff4P) err and may bo higier than c.rrert)t valid Ph1P values
Please refer to NOAA Atlas 14 1:13cummt for mac infarrrotion
Projection Engineering, Inc.
Preparation Date: 7/26/2012
Back ft) el)
PF graphical
22 of 28
Westech College
Job Number: 120202
1
e
EXHIBIT 'F' - CURVE NUMBERS
ACTUAL IMPERVIOUS COVER
Land Use (1)
Range -Percent
Recommended Value
For Average
Conditions -Percent (2)
Natural or Agriculture
0 - 0
0
Public Park
10 - 25
15
School
30 - 50
40
Single Family Residential: (3)
2.5 acre lots
5 - 15
10
1 acre lots
10 - 25
20
2 dwellings/acre
20 - 40
30
3-4 dwellings/acre
30 - 50
40
5-7 dwellings/acre
35 - 55
50
8-10 dwellings/acre
50 - 70
60
More than 10 dwellings/acre
65 - 90
80
Multiple Family Residential:
Condominiums
45 - 70
65
Apartments
65 - 90
80
Mobile Home Park
60 - 85
75
Commercial, Downtown Business
or Industrial
80 - 100
90
Notes:
1. Land use should be based on ultimate development of the watershed. Long
range master plans for the County and incorporated cities should be reviewed
to insure reasonable land use assumptions.
2. Recommended values are based on average conditions which may not apply to
a particular study area. The percentage impervious may vary greatly even on
comparable sized lots due to differences in dwelling size, improvements, etc.
Landscape practices should also be considered as it is common in some areas
to use ornamental gravels underlain by impervious plastic materials in place of
lawns and shrubs. A field investigation of a study area shall always be made,
and a review of aerial photos, where available, may assist in estimating the
percentage of impervious cover in developed areas.
3. For typical equestrian subdivisions increase impervious area 5 percent over the
values recommended in the table above.
SAN BERNARDINO COUNTY
ACTUAL IMPERVIOUS COVER
FOR
HYDROLOGY MANUAL
DEVELOPED AREAS
Projection Engineering, Inc.
Preparation Date: 7/26/2012
C-8
23 of 28
Figure C-4
')7,1
Westech College
Job Number: 120202
ATTACHMENT'C' - FLOOD INSURANCE RATE MAP
to
Projection Engineering, Inc.
Preparation Date: 7/26/2012
i-r,~r..cr, ..i�.�r.u..v
IMP SCALE 1" • GOO'
0 !te lice
rrrr
VETEn
FIRM
INSLRAh10E RAC MAP
S 41 DF_1L�ARIIt�()
COU't .
CA I.i11Mt81A
.t %H til ttict4 iA 91111 %AIU
PANEL 1Ft4 0= 5ii0
r"'rw Vfr 1.:¢1 r14.. nktr1 :t,:1;*
=7..; r'
v•r
ri,; •sni
l•...v .
4.4 s.•.s +n r6.. .r r.+..r. n..r..
•
MAP tittirttlt
41OTI.H I
MAP FEVER)
AULLUT 7]. n01
',Most I .ors se, tls....r•t tp.s.r
O. ..>n*. ta. w.^,r of +• a-n,..rw.r....tN...t..,.r r
.r.71+a a.* t 11 t 1;:5 Uw 11...rw.♦•Ys4 r21
rr.rr••.. .'••• rrl "r:• ls.n ems...#*., p. In.00. ,1r.
91.<`... Pa',r {r.i. 1•m •..+ rAr•sL.r tlu..r r,.p..a1 •..e w rem.,t
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Westech College
24 of 28 Job Number: 120202
ATTACHMENT `D' — EXISTING CONDITION DRAINAGE EXHIBIT
Projection Engineering, Inc. Westech College
Preparation Date: 7/26/2012 25 of 28 Job Number: 120202
ATTACHMENT `E' — PROPOSED CONDITION DRAINAGE EXHIBIT
Projection Engineering, Inc. Westech College
Preparation Date: 7/26/2012 27 of 28 Job Number: 120202
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APN:
0193-232-12
EXISTING
RESIDENCE
APN: 0193-232-01
HAIYTHOR
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EXISTING
RESIDENCE
APN
0193-233-01
APARTMENT BUILDING
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EXISTING COMMERCIAL BUILDING
APN: 0193-234-06
EX/STING FLOWS
SHEET FLOW TO
OLIVE STREET
A = 10 AC
1
- 11.79
0 = 825 CFS
SUB AREA = 2C
0'% • ►
pv PCB
0 = 4.90 CAS
.34 AC
VACANT LOT
APN: 0193-243-10
N
EXISTING APARTMENT BUILDING
APN: 0193-243-02
SUB AREA = 1C
SUB AREA = 28
\.
SUB AREA = 18
5 AC
It OCg3
/R EAR t
--1175
VACANT LOT
APN: 0193-243-03
VACANT LOT
APN: 0193-243-06
VACANT LOT
APN:
0193-234-09
ti
ti
286 Gas
(LEV.
11782
0 = .107 CES
-a� AC
A ts3.$1
INITIAL SUB
AREA = 2A
INITIAL SUB
AREA = 1A
A=075 AC
S=00069
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EXISTING COMMERCIAL BUILDING
APN: 0193-243-07
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EXISTING NUISANCE
r SHEET FLOW
TO SIERRA AVE.
=0.27AC
EXISTING
COMMERCIAL
BUILDING
APN:
0194-101-05
EXISTING
COMMERCIAL
BUILDING
APN:
0194-101-04
50'
50'
1175-
/
SIERRA AVENUE
FILE NAME:
HYDROLOGY-01
VACANT LOT
APN.
0194-101-03
EXISTING
COMMERCIAL
building
APN:
0194-101-02
EXISTING
COMMERCIAL
building
APN:
0194-101-01
EXISTING
COMMERCIAL
BUILDING
APN:
0194-111-06
0 15 30
60 90 120
1 /N = 30 FEET
PARCEL MAP No. 19382
WDID No. 8 36C363671
HYDROLOGY EXHIBIT
(EXISTING CONDITION)
9460 SIERRA AVENUE
FONTANA, CA 92353
SHEET
1
OF
2
NOT FOR CONSTRUCTION
10Jul 2012.9:25am' Owner
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EXISTING
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APN: 0193-233-01
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= 12.64 CFS
" SEE REPORT FOR
UNDER -SIDEWALK
DRAIN CALCULATIONS
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The infermaien earthy; co !his arophe reoresenraren he5 b.111 compiled from 13 vonely of
sources and Is subjecr 10 change without nob. Prelacies, Engineering TBIte5 PO
;CW1,6E011311018 Or warrantee ervress a Implied os to accuracy completer.. IffinIdmess cc
product nor Is inosignod or Inland. re El conerUCIIM deal°, docuMent The use Or Melee 04
Vol ',emotion hshtoltt 01500 IIIIS grOphIC reerosenleboo Is et es sole riSk Of CO party using Ot
M191.15Ing infamallon
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VACANT LOT
APN: 0193-243H0
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OFFSITE FLOWS
SHEET FLOW TO
OLIVE STREET
A — 10 AC
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N
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Az
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PARCEL NO. 2
AREA 4A
REACH 5
EXISTING APARTMENT BUILDING
APN: 0193-243-02
EXISTING COMMERCIAL BUILDING
APN: 0193-234-06
N.
N
N
N
AREA 59 \
V 09 tt
14. N
5t
A=009 AC
L=.117*
S=00100
VACANT LOT
APN: 0193-243-03
N
0
VACANT LOT
APN: 0193-243-06
AREA 5A
AREA 2C
0
0
0
ACNI
I
VACANT LOT
APN: 0193-234-09
A=1222 AC -
L=135.5'
5=0.0180
REACH 4
A=007 AC
-1=85.0'
5=00100
AREA JA
AREA 28
0 = 060 CIS
REACH 2
A=0.20 AC
L=101.1'
AREA 2A
A= 5 AC
PARCEL NO. 1
A=0.12 AC
L=12500'
S=0.X641 '3
L=7109
EXISTING COMMERCIAL BUILDING
APN: 0193-243-01
Reach Flow
project tWesCoth Coltsge) Flow oath
°Ott&
Reath 5 (1.4..rtgthr210 ft')
•
Rettettcht {Length= ECe6 ft)
lA (Arta = Q.? fl• ar), CN 751, re). 3 3 1433
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NUISANCE SHEET
FLOW TO SIERRA AVE
A = 027 AC
NUISANCE SHEET
DRAINAGE
TO SIERRA AVE.
a -
0
)73
_ ......
EXISTING
COMMERCIAL
BUILDING
APN: 0194-101-05
EXISTING
COMMERCIAL
BUILDING
APN: 0194-101-04
VACANT LOT
APN: 0194-101-03
EXISTING
COMMERCIAL
BUILDING
APN: 0194-101-02
cc
EXISTING
COMMERCIAL
BUILDING
APN: 0194-101-DI
EXISTING
COMMERCIAL
BUILDING
I APN: 0194-111-06
0 15 JO
60
90
120
1 IN a- JO FEET
PARCEL MAP No. 19382
WDID No. 8 36C363671
E E
teR6v„s Aka eowsto
PROJECT NO.
DRAWN:
DRAWN BY:
CHECKED BY:
FILE NAME:
HYDROLOGY-02
120202
06/27/12
JTC/PEF
PEF
WES TECH COLLEGE FACILITY
HYDROLOGY EXHIBIT
(PROPOSED CONDITION)
9460 SIERRA AVENUE
FONTANA, CA 92353
SHEET
2
OF
2
RJAIINARY - NOT FOR