Agenda packet — Beaumont City Council, May 5, 2026 (part 3 of 17)

UNIFIED SOILS CLASSIFICATION (ASTM D-2487)

PRIMARY DIVISION -

GROUP SYMBOL

SECONDARY DIVISIONS

COARSE GRAINED SOILS
More than half of materials is
larger than #200 sieve size

GRAVELS
More than half
of coarse
fraction is larger
than #4 sieve
Clean
Gravels
( . o
U Dui
nu)
ML
Inorganic silts and very fine sands, rock flour, silty or clayey fine or clayey sifts, with slight plasticity
CL
Inorganic clays of low to medium p gravellyy,gravellySys, sandy clays, silty clays, lean clays.

OL
Organic sills and organic silty clays of low plasticity. o
Q } 2 p c,
IT5 g m ql
-'U moo~
MH
Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts.

CH
Inorganic days of high plastiaiy, fat days
OH
Organic days of mediwn to high plasticiy, organic silts.

Peat and other highly organic soils.

Highly Organic Soils
PT

CLASSIFICATION BASED ON FIELD TESTS

PENETRATION RESISTANCE (PR)
Clays and Silts
'Numbers
Sands and Gravels
Consistency
Blows/foot'
Strength'"
of blows of 140 lb hammer
falling 30 inches to drive a 2 -inch O.D.
(1 3/8 in. I.D.) Split Barrel sampler
Relative Density
Blovwsffoot
_ Very Soft
0-2
0-34
(ASiL1-1 58a Standard Penetration Test)
Very loose
0-4
Soft
2-4
3'4-34
Loose
4-10
Finn
4-8
34-1
Medium Dense
10 30
Stiff
8-15
1 2
"Ylrrcarpfined Carnpressre Mengel M
tons/sq. ft. Read from pocket
Dense
30-50
Very Stiff
15-30 _
2-4
penetrometer
Very Dense
Over 50
Hard
Over 30
Over 4

CLASSIFICATION CRITERIA BASED ON LAB TESTS
Plasticity Index
0 0 o 0
-
-.""C""""-
GW and SW - C„= D80/D10 greater than 4 for GW and 6 for SW; Ca= (D30) 2/D1dc Deo between 1 and 3
- _
GP and SP — Clean or sand not meeting requirement for GW and SW gravel
GM and SM— Atterberg limit below 'A' line or P.I. less than 4 w
W
GC and SC — Atterberg limit above 'A line P.I_ greater than 7 o to 20 30 40 50 60 70 80 90 tog CLASSIFICATION OF EARTH MATERIAL IS BASED ON FIELD INSPECTION Liquid « AND SHOULD NOT BE CONSTRUED TO IMPLY LABORATORY ANALYSIS Plasticity chart for laboratory UNLESS SO STATED.

Classification of Fine-grained soils
Fines (Silty or Clay)
Fine Sand
Medium Sand
Coarse Sand
Fee Gravel
Coarse Gravel
Cobbles
Boulders
Sieve Sizes 200 40 10 4 W 3' 10'
--+.
ire, <,'a.wa•"ot 14{M
yiR'aY::

GLOBAL GEO-ENGINEERING, INC

GEOLOGIC AND SOILS ENGINEERING, IRVINE, CALIFORNIA
m'
.

Northwest Corner of Pennsylvania Avenue and I-10 Freeway Beaumont, California
Date: September 2018
Figure No.:

Project No.: 7862-04
B -1

Page 252 of 1910 ends

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4 cow
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0 0
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co
Global Geo-En ineerin Inc.
g� g,
Irvine, California
LOG OF BORING B-1
Method : Hollow Stem
Sampling
Sampling Method : California Modified
Hammer Weight (Ibs) : 140
Hammer Drop : 30
Geologists and Geotechnical Engineers
Date August 29, 2018
(in)
Northwest Corner of Pennsylvania Avenue
and I-10 Freeway
Beaumont, California
Logged By KBY
Drilling Company Cal Pac
Drilling Rig : Mobile B-53
Project 7862-04
o
Sample Type
Water Levels
IMI Ring
V Groundwater Encountered
ot
a2
%/ Bulk
v Seepage Encountered
t
E
a)
C
L
2 a'
N .c
O ?j
w
w
C U
O 7
-.
o
o
V
U
N
';
TD
0 3
co

o
=
a.

Standard Penetration Testing
a
o
E
co
a
TD o
0 o L
3 m
m
TD
$
U
D

DESCRIPTION
0 -
5—
-
10-
15-
AF
erill
A
`

M SM/ML
Ir`

4.9 9.6

8.4 9.0
101.0
113.6
114.1
108.7
26 38
38 57
Silty SAND: fine grained, orange to dark yellow brown, slightly moist, medium dense, porous with Sandy SILT interbeds
@5' dark orange brown, slightly porous
@9' orange to yellow brown
@14' medium dense to dense, slightly gravelly
@19' yellow brown, more Silty
20-W
�/�

4.5 107.8
41 ALLUVIAL FAN DEPOSITS
25-
_
30 —
35 —
Bottom of Boring at 20 feet:

Notes:

1. Caving to 13 feet after augers were removed

2. No groundwater or seepage encountered

3. Boring backfilled
Figure B-2

Page 253 of 1910 ends

m
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w
4 ED
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o
0 N
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J
Global Geo-En ineerin Inc.
g� g,
Irvine, California
LOG OF BORING B-2
Drilling am Method Hollow Stem
Sampling Method California Modified
Hammer Weight (Ibs) : 140
Hammer Drop (in) . 30
Geologists and Geotechnical Engineers
Date August 29, 2018
Northwest Corner of Pennsylvania Avenue
and I-10 Freeway
Beaumont, California
Logged By KBY
Drilling Company Cal Pac
Drilling Rig Mobile B-53
Project 7862-04
Sample Type
Water Levels
O
..c.).-=,
► Ring
y Groundwater Encountered
N
g
I A Bulk
V Seepage Encountered
If;
li
C
t
O
o
t
w .0
a
2 w
C U
p La
O
U
U
?
Cu
rn
U
a
Standard Penetration Testing
a
o
E
cn
o
a
o a
in
''°
EC
ca
V
n

DESCRIPTION
0 -
5 10-
15—
20 Z 8.3
„
r`

8.6 4.7

7.4 5 0
100.2
112.5

94.2 117.2
104 4
40 55
29 78
36 SM/ML
Silty SAND: fine grained, orange brown to yellow brown, slightly moist, medium dense, slightly porous with Sandy SILT interbeds @9' dark yellow brown
@14' medium dense to dense, slightly gravelly

ALLUVIAL FAN DEPOSITS
-
-
25 -
-
30 35—
Bottom of Boring at 20 feet:

Notes:

1. Caving to 13.5 feet after augers were removed

2. No groundwater or seepage encountered

3. Boring backfilled
Figure B-3

Page 254 of 1910 ends

Global Geo-Engineering, Inc.

Irvine, California
Geologists and Geotechnical Engineers
LOG OF BORING B-3
Northwest Corner of Pennsylvania Avenue
and 1-10 Freeway
Beaumont, California
Project 7862-04
Date
Logged By
Drilling Company
Drilling Rig
August 29, 2018
KBY
: Cal Pac
Mobile B-53
Drilling Method Hollow Stem
Sampling Method : California Modified
Hammer Weight (Ibs) : 140
Hammer Drop (in) • 30
-2018 C:1Program. Files (x8811mtech2014\temp\Baring Logs 2002 Editon\7862-04 - Sondh, Beaumont 0-3 bor Depth in Feet
a)
Q
E
as
rn
7 p)
in a)
'0
a)
76 V
C
CD
O 7
O n
Blow Count
Relative Compaction
0 Water Level
U
rn
Sample Type
® Ring
p7A Bulk
Standard Penetration Testing
Water Levels
y Groundwater Encountered
p Seepage Encountered

DESCRIPTION
5_®
10-
7 15-
20- E
25- E
30 12.5

9.6 13.1

9.4 13.9

15.7 12.4
114.0
112.6
116.4
113.5
111.7
115.3
113.9
27 27
24 27
21 24
30 SM/ML
Silty SAND: fine grained, orange brown, moist, medium dense, slightly porous with Sandy SILT interbeds, slight CLAY content @9' orange brown
@14' slightly gravelly
@24' more Silty, dark orange brown
@29' less Silty, fine to medium grained, yellow brown

ALLUVIAL FAN DEPOSITS
35 —
Bottom of Boring at 30 feet:

Notes:

1. Caving to 24 feet after augers were removed

2. No groundwater or seepage encountered

3. Boring backfilled
Figure B-4

Page 255 of 1910 ends

Global Geo-Engineering, Inc.

Irvine, California
LOG OF BORING P-1
Drilling Method Hollow Stem
Sampling Method : California Modified
Hammer Weight (Ibs) : 140
Hammer Drop (in) 30
Geologists and Geotechnical Engineers
Date - August 29, 2018
Northwest Corner of Pennsylvania Avenue
and I-10 Freeway
Beaumont, California
Logged By KBY
Drilling Company : Cal Pac
Drilling Rig : Mobile B-53
Project 7862-04
Depth In Feet
Sample
Field Moisture
% Dry Weight
Dry Density
lb./cubic ft.

Blow Count
Relative Compaction
Water Level
Sample Type
Water Levels
DM Ring
IF Groundwater Encountered
%/ Bulk
p Seepage Encountered
Standard Penetration Testing
U
2 a
U
u

DESCRIPTION
0 5
SM
R.,
Silty SAND: fine grained, orange brown, moist, medium dense with Sandy SILT interbeds

ALLUVIAL FAN DEPOSITS
10 Bottom of Boring at 5 feet:

Notes:

1. No groundwater or seepage encountered

2. Perforated pipe and gravel installed for future percolation testing Figure B-5

Page 256 of 1910 ends

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co
in
om
LL
E
0 w
o
N
c1
N
0 Global Geo-En ineerin Inc.
g� g,
Irvine, California
LOG OF BORING P-2
ow Stem
Drilling Method : CalifornaM
Sampling Method :California Modified
Hammer Weight (Ibs) - 140
Hammer Drop (in) 30
Geologists and Geotechnical Engineers
Date : August 29, 2018
Northwest Corner of Pennsylvania Avenue
and I-10 Freeway
Beaumont, California
Logged By KBY
Drilling Company Cal Pac
Drilling Rig Mobile B-53
Project 7862-04
o
Sample Type
Water Levels
o
IMIRing
Groundwater Encountered
E
% Bulk
p Seepage Encountered
iii
-
Q
t
t_ii N ._
2 n
U
U
≥
>
J
CO
U
d
Standard Penetration Testing
-
Q
a
E
u)0
a o
❑ U
3o
a, a
u)

DESCRIPTION
5 SM
Silty SAND: fine grained, orange brown to yellow brown, slightly moist, medium dense with Sandy SILT interbeds

ALLUVIAL FAN DEPOSITS
10 —
Bottom of Boring at 5 feet:

Notes:

1. No groundwater or seepage encountered

2. Perforated pipe and gravel installed for future percolation testing Figure B-6

Page 257 of 1910 ends

BORING LOCA TION PLAN
14'-0'
w

MASSACHUSE
14'-0'
4r 4e4'
ETA"
Mr ?7-0'

DEDICATION
167.64'

EXISTING

RESIDENTIAL
•
REST.
2,400 SF
a
W
jrB -I C -STORE
20 ft. 3,000 SF
W
0 0
t
a
4a-10'
a a '
PROPOSED « • PY 6 MPD_
B-2
r r 20 ft.

U
t
t
1, 12'. ' /1 C50' /
a

14.0'

DEDCATION
b
14'-0"

DEDICATION

PROPOSED TRASH

ENCLOSURE
P-2
1a-0'
//i//
144'

DEDICATION
s4r

SIDEWALK

10.-0'
5 ft.
0 CAR WASH
• B-3
30 ft.
0 t
1e-0'
P -I
5 ft.

Page 258 of 1910 ends

14'0
M-0'

SIDEWALX
z
KEY
• B-3
30 ft.
4 P2

APPROXIMATE BORING LOCATION,

SHOWING TOTAL DEPTH
5 ft. APPROXIMATE PERCOLATION TEST BORING LOCATION,

SHOWING TOTAL DEPTH
u
40 0 40 80

SCALE FEET

BORING LOCATION PLAN
PENNSYLVANIA AVE AT I-10 FWY,

BEAUMONT, CALIFORNIA

GLOBAL GEO ENGINEERING, INC
PROJECT NO.: 7862-04 DATE: SEPTEMBER 2018 FIGURE NO.: B-7

Project 7862-04

APPENDIX C
Laboratory Testing Program
The laboratory testing program in our investigation was directed towards providing quantitative data relating to the relevant engineering properties of the soils. Samples considered representative of site conditions were tested as described below. Laboratory test results from the prior investigations are also shown below.
a) Moisture -Density
Moisture -density information usually provides a gross indication of soil consistency. Local variations at the time of the investigation can be delineated, and a correlation obtained between soils found on this site and nearby sites. The dry unit weights and field moisture contents were determined for selected samples. The results are shown on the Logs of Borings.
b) Com
inaction
A representative soil sample was tested in the laboratory to determine the maximum dry density and optimum moisture content, using the ASTM D1557 compaction test method.

This test procedure requires 25 blows of a 10 -pound hammer falling a height of 18 inches on each of five layers, in a 1/30 cubic foot cylinder. The results of the tests are shown below:

Boring No.

Sample Depth
(ft)
Soil
Description
Optimum Moisture
Content
(%)
Maximum
Dry Density
(lb/ft3)
B-1
1-3
Silty SAND

9.3 127.3

Page 259 of 1910 ends

Appendix C
Project 7862-04

Page 20 ends

c) Direct Shear
Direct shear tests were conducted on relatively undistiurbed samples, using a direct shear machine at a constant rate of strain in accordance with ASTM test Method D3080. Variable normal or confining loads are applied vertically and the soil shear strengths are obtained at these loads. The angle of internal friction and the cohesion are then evaluated. The samples were tested at saturated moisture contents. The test results are shown in terms of the Coulomb shear strength parameters, as shown below:

Boring No.

Sample Depth
(ft)
Soil
Description
Coulomb
Cohesion
(lb/ft2)
Angle of
Internal Friction
(°)
Peak/

Residual
B-1
2 Silty SAND
150
150
29 29
Peak
Ultimate
d) Sulfate Content
A representative soil sample was analyzed for its sulphate content in accordance with California Test Method CA417. The results are given below:

Boring No.

Sample Depth
(ft)
Soil Description
Sulphate Content
(%)
B-1
1-3
Silty SAND

0.0037
e) Chloride Content
A representative soil sample was analyzed for chloride content in accordance with California Test Method CA422. The results are given below:

Boring No.

Sample Depth
(ft)
Soil
Description
Chloride Content
(%)
B-1
1-3
Silty SAND

0.0032

Page 260 of 1910 ends

Appendix C
Project 7862-04

Page 21 ends

Resistivity and pH
A representative soil sample was analyzed in accordance with California Test Methods CA532 and CA643 to determine the minimum resistivity and pH. The result is provided below:

Boring No.

Sample Depth
(ft)
Soil
Description
Minimum Resistivity
(ohm -cm)
pH
B-1
1-3
Silty SAND
4,018

7.9

Page 261 of 1910 ends

Appendix 4: Historical Site Conditions
Phase I Environmental Site Assessment or Other Information on Past Site Use - 36 -

Page 262 of 1910 ends

Appendix 5: LID Infeasibility
LID Technical Infeasibility Analysis
- 37 -

Page 263 of 1910 ends

Appendix 6: BMP Design Details
BMP Sizing, Design Details and other Supporting Documentation - 38 -

Page 264 of 1910 ends

Tabulation and Sizing Calculations
BMPs Sizing Calculation:

These calculations are based on approved methodologies within the currently active Municipal Separate Storm Sewer System (MS4) permits for Santa Ana River Watershed regions of Riverside County. All included BMP designs are sized based on the design capture volume, VBMp. However, there may be circumstances when flow based Treatment Control BMPs are utilized and therefore this section also includes the methodology for calculating the design flow rate, QBMp.

Calculating VBMP:

Volume based BMPs, including all of the BMPs in this report, are sized to capture and treat the design capture volume, VBMp. As the method for calculating and documenting the design capture volume varies by watershed. The watershed a particular project is within can be determined from the 'Locate my Watershed' tool available at: www.rcflood.org/npdes/ . This project is within Santa Ana River watershed.

In order to meet Regional Water Quality Control Board (RWQCB) requirements, in the Santa Ana River Watershed the design capture volume (VBMp) is based on capturing the volume of runoff generated from an 85th percentile, 24 -hour storm event. Following the steps using the worksheet provided in the LID Handbook to calculate VBMp in the Santa Ana River Watershed.

The Design Storm Depth (D85) is determined by locating the project site on the Isohyetal Map for the 85th Percentile 24 -hour Storm Event. For the Lake Elsinore area project D85 is 0.845 inches. See below Isohyetal Map.
- 39 -

Page 265 of 1910 ends

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Stormwater & Water Conservation racking -Tool
Ilst v Lora�te ', ji 339302 116-990 apar
t ort only avartat le at level 16 i E Pr # • 4
Layers Metadata Map Tutorial }
Choose search Item from
Legend
Toggle Clear
Darn
tvice
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✓ Permit Areas
li 0 itydrofogre llnrt Codea I-IUCt
• DTapcgrapfrlc En arrrage Boundary
Drainage Area Boundaries
■ - Citystorm Drarns
WOMP W% Denge 1snhyetat Map
• Rain Gauges
Isohyetal Minor Contours
Isohyetal Mawr Contours
• CRP {Control Release Palm)
f FEMAFloodplarn
Flood Plain Other Speelal studies
f As -Built Plans
I Groundwater Data
• Critical Coarse Sediment Yield Areas
• U . i . r r WU rjil Crili - Habitat
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- 40 -
Tuu
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Page 266 of 1910 ends

Santa Ana Watershed
V,7%.= and 0E P worksheets
These worksheets are to be used to determine the required Design Capture Volume V_.!.?,_•;
or the
Design Flow Rate (Q24p)
for BMPs in the Santa Ana Watershed
To verify' which watershed your project is located within.. +oisit ,,.,;..,,,.r reflood orc, nppdes
and use the Locate my Watershed" tool
It your project is not located in the Santa Ana Watershed, Do not use these worksheets! Instead visit
�r..,,v.;,. reflood org=inpdesidevelo•pers_aspx
To access worksheets applicable to your watershed
Use the tabs across the bottom
to access the worksheets for the Santa Ana Watershed
- 41 -

Page 267 of 1910 ends

Table 2-1: Impervious Fraction Based on Various Land Use Covers Surface Type
Effective Impervious
Fraction, If
Roofs

1.00 Concrete or Asphalt

1.00 Grouted or Gapless Paving Blocks

1.00 Compacted Soil (e.g. unpaved parking)

0.40 Decomposed Granite

0.40 Permeable Paving Blocks w/ Sand Filled Gap

0.25 Class 2 Base

0.30 Gravel or Class 2 Permeable Base

0.10 Pervious Concrete / Porous Asphalt

0.10 Open and Porous Pavers

0.10 Turf block

0.10 Ornamental Landscaping

0.10 Natural (A Soil)

0.03 Natural (B Soil)

0.15 Natural (C Soil)

0.30 Natural (D Soil)

0.40 - 42 -

Page 268 of 1910 ends

Santa Ana Watershed - BMP
Design Volume, VEmp
Legend.

Required Entries
Calculated Cells
14+'e.. is—'47ta
(Nate
ills Yi!af*She:C!
SPB Engineering,
ShiJIi amity be LLCM
IR [ onykJ•Jri hon with I.4IP designs from tbe
{SID E:: P Desire di f811fbooA )
Company Name
Designed by
Company Project
Inc.

Date
Case No
9115/2023
SP
Number/Name
PIA2019-4358
BMP Identification
BMP NAME e ID
Beaurnont Gas Station, Convenience Store and Carwash
lutosr nt - ,, _ ,d on BMP esf gre Calakst!Dfi 5hee
Design Rainfall Depth
85th Percentile, 24 -hour Rainfall Depth, D:I,=
from the Isohyet2l Map in Handbook Appendix E
Drainage Management Area Tabulation
4-$5
inches
DMA
TypefID
DMA Area
(square feet)
Post -Project Surface
Type
Effective
tmpe1ivous
Fraction, Ip
DMA
Runoff
Factor
DMA Areas x
Runoff factor
Design
Strom
Depth ein)
Design CaPeure
Valurne. Valor
(cubic feet)
Proposed
Volume an
Plans (cubic
feet)
D/3r'1
5322
Roofs
J
a89
47472
t/3E
4724.5
Mixed Surface Types

0.3 0.23
388.3
D/2,A
22780
Concrete or Asphalt
I

0.89 20319.8
D/2E
3524.7
Mixed Surface Types

0.3 0.23
793.6
13,41A
16421.6
Concrete or Asphalt
I

0.89 14648.1
D/IE
2374.4
MrxedSolace Types
023
647.2
AMA
1034
°r'rxiedSurface Types
:..

O.23
232 ..8
53681.2
I oto.'
41777

0.85 2941.8

3.577
Notes:
- 43 -

Page 269 of 1910 ends

Bioretention Facility - Design Procedure
BMP ID
1A
Legend:

Required Entries
Calculated Cells
Company
Designed
Name: Moment Engineering
Date:

County/City Case No.:
7/25/2025
by: E.A.

Design Volume
Enter the area tributary to this feature
Enter BMP determined from Section 2.1 of this Handbook
AT=
VBMP
acres
ft3

0.44 1,083
Type of Bioretention Facility Design
Side slopes required (parallel to parking spaces or adjacent to walkways) O No side slopes required (perpendicular to parking space or Planter Boxes) Bioretention Facility Surface Area
Depth of Soil Filter Media Layer
Top Width of Bioretention Facility, excluding
Total Effective Depth, dE
dE = (0.3) x ds + (0.4) x 1 - (0.7/wT)
Minimum Surface Area, A.
_ VBMP (ft3)
curb
+ 0.5
ds =
wT =
dE=
AM =
A=

3.0 ft
ft
ft
ft`
ftz

9.0 630
AM (ft2) dE (ft)
Proposed Surface Area
883
Bioretention Facility Properties
Side Slopes in Bioretention Facility
Diameter of Underdrain
Longitudinal Slope of Site (3% maximum)
6" Check Dam Spacing
Describe Vegetation: Natural Grasses
z =
4 :1
inches
%
feet
6 1
25 Notes:

Riverside County Best Management Practice Design Handbook JUNE 2010 Page 270 of 1910

Bioretention Facility - Design Procedure
BMP ID
2A
Legend:

Required Entries
Calculated Cells
Company
Designed
Name: Moment Engineering
Date:

County/City Case No.:
7/25/2025
by: E.A.

Design Volume
Enter the area tributary to this feature
Enter BMP determined from Section 2.1 of this Handbook
AT=
VBMP
acres
ftj

0.6 1,512
Type of Bioretention Facility Design
Side slopes required (parallel to parking spaces or adjacent to walkways) O No side slopes required (perpendicular to parking space or Planter Boxes) Bioretention Facility Surface Area
Depth of Soil Filter Media Layer
Top Width of Bioretention Facility, excluding
Total Effective Depth, dE
dE = (0.3) x ds + (0.4) x 1 - (0.7/wT)
Minimum Surface Area, A.
_ VBMP (ft3)
curb
+ 0.5
ds =
wT =
dE=
AM =
A=

3.0 ft
ft
ft
ft -
ftz

9.0 878
Am (ft2) dB (ft)
Proposed Surface Area
1,645
Bioretention Facility Properties
Side Slopes in Bioretention Facility
Diameter of Underdrain
Longitudinal Slope of Site (3% maximum)
6" Check Dam Spacing
Describe Vegetation: Natural Grasses
z =
4 :1
inches
%
feet
6 1
25 Notes:

Riverside County Best Management Practice Design Handbook JUNE 2010 Page 271 of 1910

Bioretention Facility - Design Procedure
BMP ID
3A
Legend:

Required Entries
Calculated Cells
Company
Designed
Name: Moment Engineering
Date:

County/City Case No.:
7/25/2025
by: E.A.

Design Volume
Enter the area tributary to this feature
Enter BMP determined from Section 2.1 of this Handbook
AT=
VBMP
acres
ft'

0.16 364
Type of Bioretention Facility Design
Side slopes required (parallel to parking spaces or adjacent to walkways) O No side slopes required (perpendicular to parking space or Planter Boxes) Bioretention Facility Surface Area
Depth of Soil Filter Media Layer
Top Width of Bioretention Facility, excluding
Total Effective Depth, dE
dE = (0.3) x ds + (0.4) x 1 - (0.7/wT)
Minimum Surface Area, A.
_ VBMP (ft3)
curb
+ 0.5
ds =
wT =
dE=
AM=
A=

3.0 ft
ft
ft
tr
ftz

9.0 212
AM (ft2) dB (ft)
Proposed Surface Area
935
Bioretention Facility Properties
Side Slopes in Bioretention Facility
Diameter of Underdrain
Longitudinal Slope of Site (3% maximum)
6" Check Dam Spacing
Describe Vegetation: Natural Grasses
z =
4 :1
inches
%
feet
6 1
25 Notes:

Riverside County Best Management Practice Design Handbook JUNE 2010 Page 272 of 1910

Appendix 7: Hydromodification
Supporting Detail Relating to Hydrologic Conditions of Concern - 45 -

Page 273 of 1910 ends

Were Conservation Too: - Rae. X et Rata SWCTT
C Q O enntenLreflood.orgfEeretittracker/
x ➢ Sear.

Stormwater &Water Conservation racking -Tool
I, Rase Data
✓ Highways
✓ — Roads
• Clues
• Parcels
• ❑RCFC Zones
• Slope
• ID -County Raad Rook.
• NH D [National Hydrography Dosser) Frowllnes
Shonawater Data
✓ HydromotldFwtibn Sruteptiblldy Maprang
Not Susceptible
- Sans ring River
Pntentrally 5uscepbble
20242022 - 303d/TY«IDL
✓ HydrnmmPihplonn Exemption Areas
Potentially Not Exempt
Praentrally Exernpt
✓ nutrict racalives
District Faciiifles
Proposed Wanes
y i� T'ype Here to search
^� 7".:t.sAnj
Trri
'CT 43 _
- a x
t': E i Enw
wt ri II 6 cal At
+ ^ to £l 0+. Sie pM
711k2�3
The project site is within the Applicable Area and the downstream is potentially Susceptible Stream Channel, therefore HCOC mitigation were provided.

Mimicking the pre -development hydrograph with the post -development hydrograph, for a 2 -year return frequency storm. Generally, the hydrologic conditions of concern are not significant, if the post - development hydrograph is no more than 10% greater than pre -development hydrograph. In cases where excess volume cannot be infiltrated or captured and reused, discharge from the site must be limited to a flow rate no greater than 110% of the pre -development 2 -year peak flow.

Based on the information provided above, this project meets the requirements of Condition C and will not create a hydrologic condition of concern in the proximate or downstream receiving waters.

The post -development hydrograph for the 2 -year, 24 -hour rainfall event will be mitigated by the implementation of Site Design BMPs to limit discharges to a flow rate no greater than 110% of pre - development 2 -year flow.

HCOC Mitigation:

Drainage Area A = 1.23 Ac
Storm Frequency
Existing
Proposed
Det. Basin
Different
Different
Q 2 (cfs)
Q 2 (cfs)
Outlet
[2] — [1]
[2] — [1]
[1]
Q 2 (cfs) [2:
(cfs;
(%)
2 -year 24 -hour

0.133

0.316

0.104
-0.029
-22%
- 46 -

Page 274 of 1910 ends

Unit H y d r o g r a p h Ana l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2008, Version 8.1 Study date 08/27/23 File: beau2pr242.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 4029
English (in -lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
Beaumont - Pennsylvania Avenue & I-10 FWY
Inflow Hydrographs, Proposed Conditions
2 -year 24 -hour storm
Drainage Area = 1.23(Ac.) = 0.002 Sq. Mi.

Drainage Area for Depth -Area Areal Adjustment =
Length along longest watercourse = 379.00(Ft.)
Length along longest watercourse measured to centroid
Length along longest watercourse = 0.072 Mi.

Length along longest watercourse measured to centroid
Difference in elevation = 2.70(Ft.)
Slope along watercourse = 37.6148 Ft./Mi.

Average Manning's 'N' = 0.018
Lag time = 0.020 Hr.

Lag time = 1.21 Min.
25% of lag time = 0.30 Min.
40% of lag time = 0.48 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area (Ac .) [1]

1.23 Rainfall(In)[2] Weighting[1*2]

2.60 3.20
100 YEAR Area rainfall data:

Area (Ac.)[1]

1.23 Rainfall(In)[2] Weighting[1*2]

6.40 7.87
STORM EVENT (YEAR) = 2.00
Area Averaged 2 -Year Rainfall =
Area Averaged 100 -Year Rainfall =

2.600(In)

6.400(In)
Point rain (area averaged) = 2.600(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 2.600(In)
Sub -Area Data:

Area(Ac.) Runoff Index Impervious %

0.170 75.00 0.000

1.060 75.00 0.900
Total Area Entered = 1.23(Ac.)
- 47 -

1.23(Ac.) =
142.00(Ft.)

0.027 Mi.

0.002 Sq. Mi.

Page 275 of 1910 ends

RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC -1 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

75.0 57.0 0.501 0.000 0.501 0.138 0.069

75.0 57.0 0.501 0.900 0.095 0.862 0.082
Sum (F) 0.151
Area averaged mean soil loss (F) (In/Hr) _
Minimum soil loss rate ((In/Hr)) = 0.076
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.280

0.151
Unit Hydrograph
VALLEY S -Curve
Unit Hydrograph Data
Unit time period Time % of lag Distribution Unit Hydrograph (hrs)
Graph % (CFS)
1 0.083
2 0.167
413.145
826.290

65.970

34.030
Sum = 100.000 Sum=

0.818

0.422

1.240
The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain
(Hr.) Percent (In/Hr)
1 0.08 0.07 0.021
2 0.17 0.07 0.021
3 0.25 0.07 0.021
4 0.33 0.10 0.031
5 0.42 0.10 0.031
6 0.50 0.10 0.031
7 0.58 0.10 0.031
8 0.67 0.10 0.031
9 0.75 0.10 0.031
10 0.83 0.13 0.042
11 0.92 0.13 0.042
12 1.00 0.13 0.042
13 1.08 0.10 0.031
14 1.17 0.10 0.031
15 1.25 0.10 0.031
16 1.33 0.10 0.031
17 1.42 0.10 0.031
18 1.50 0.10 0.031
19 1.58 0.10 0.031
20 1.67 0.10 0.031
21 1.75 0.10 0.031
22 1.83 0.13 0.042
23 1.92 0.13 0.042
24 2.00 0.13 0.042
25 2.08 0.13 0.042
26 2.17 0.13 0.042
27 2.25 0.13 0.042
28 2.33 0.13 0.042
29 2.42 0.13 0.042
30 2.50 0.13 0.042
31 2.58 0.17 0.052
32 2.67 0.17 0.052
33 2.75 0.17 0.052
34 2.83 0.17 0.052
35 2.92 0.17 0.052
36 3.00 0.17 0.052
37 3.08 0.17 0.052
38 3.17 0.17 0.052
39 3.25 0.17 0.052
40 3.33 0.17 0.052
41 3.42 0.17 0.052
42 3.50 0.17 0.052
43 3.58 0.17 0.052
Loss rate(In./Hr)
Max I Low

0.268) 0.006

0.267) 0.006

0.266) 0.006

0.265) 0.009

0.264) 0.009

0.263) 0.009

0.262) 0.009

0.261) 0.009

0.260) 0.009

0.259) 0.012

0.258) 0.012

0.257) 0.012

0.256) 0.009

0.255) 0.009

0.254) 0.009

0.253) 0.009

0.252) 0.009

0.251) 0.009

0.250) 0.009

0.249) 0.009

0.248) 0.009

0.247) 0.012

0.246) 0.012

0.245) 0.012

0.244) 0.012

0.243) 0.012

0.242) 0.012

0.241) 0.012

0.240) 0.012

0.239) 0.012

0.238) 0.015

0.237) 0.015

0.236) 0.015

0.235) 0.015

0.234) 0.015

0.233) 0.015

0.232) 0.015

0.231) 0.015

0.230) 0.015

0.229) 0.015

0.228) 0.015

0.227) 0.015

0.226) 0.015
- 48 -
Effective
(In/Hr)

0.015

0.022

0.030

0.022

0.030

0.037

Page 276 of 1910 ends

44 3.67 0.17 0.052
45 3.75 0.17 0.052
46 3.83 0.20 0.062
47 3.92 0.20 0.062
48 4.00 0.20 0.062
49 4.08 0.20 0.062
50 4.17 0.20 0.062
51 4.25 0.20 0.062
52 4.33 0.23 0.073
53 4.42 0.23 0.073
54 4.50 0.23 0.073
55 4.58 0.23 0.073
56 4.67 0.23 0.073
57 4.75 0.23 0.073
58 4.83 0.27 0.083
59 4.92 0.27 0.083
60 5.00 0.27 0.083
61 5.08 0.20 0.062
62 5.17 0.20 0.062
63 5.25 0.20 0.062
64 5.33 0.23 0.073
65 5.42 0.23 0.073
66 5.50 0.23 0.073
67 5.58 0.27 0.083
68 5.67 0.27 0.083
69 5.75 0.27 0.083
70 5.83 0.27 0.083
71 5.92 0.27 0.083
72 6.00 0.27 0.083
73 6.08 0.30 0.094
74 6.17 0.30 0.094
75 6.25 0.30 0.094
76 6.33 0.30 0.094
77 6.42 0.30 0.094
78 6.50 0.30 0.094
79 6.58 0.33 0.104
80 6.67 0.33 0.104
81 6.75 0.33 0.104
82 6.83 0.33 0.104
83 6.92 0.33 0.104
84 7.00 0.33 0.104
85 7.08 0.33 0.104
86 7.17 0.33 0.104
87 7.25 0.33 0.104
88 7.33 0.37 0.114
89 7.42 0.37 0.114
90 7.50 0.37 0.114
91 7.58 0.40 0.125
92 7.67 0.40 0.125
93 7.75 0.40 0.125
94 7.83 0.43 0.135
95 7.92 0.43 0.135
96 8.00 0.43 0.135
97 8.08 0.50 0.156
98 8.17 0.50 0.156
99 8.25 0.50 0.156
100 8.33 0.50 0.156
101 8.42 0.50 0.156
102 8.50 0.50 0.156
103 8.58 0.53 0.166
104 8.67 0.53 0.166
105 8.75 0.53 0.166
106 8.83 0.57 0.177
107 8.92 0.57 0.177
108 9.00 0.57 0.177
109 9.08 0.63 0.198
110 9.17 0.63 0.198
111 9.25 0.63 0.198
112 9.33 0.67 0.208
113 9.42 0.67 0.208
114 9.50 0.67 0.208
115 9.58 0.70 0.218
116 9.67 0.70 0.218
117 9.75 0.70 0.218

0.225)

0.224)

0.223)

0.222)

0.221)

0.220)

0.219)

0.218)

0.217)

0.216)

0.215)

0.214)

0.213)

0.212)

0.211)

0.210)

0.209)

0.208)

0.207)

0.206)

0.205)

0.204)

0.203)

0.202)

0.201)

0.200)

0.199)

0.198)

0.197)

0.196)

0.195)

0.194)

0.193)

0.192)

0.191)

0.190)

0.189)

0.188)

0.187)

0.186)

0.185)

0.184)

0.183)

0.182)

0.181)

0.180)

0.179)

0.178)

0.177)

0.176)

0.175)

0.174)

0.173)

0.172)

0.171)

0.170)

0.169)

0.168)

0.167)

0.166)

0.165)

0.164)

0.163)

0.162)
-49-

0.015 0.037

0.017 0.045

0.020 0.052

0.023 0.060

0.017 0.045

0.020 0.052

0.023 0.060

0.026 0.067

0.029 0.075

0.032 0.082

0.035 0.090

0.038 0.097

0.044 0.112

0.047 0.120

0.050 0.127

0.055 0.142

0.058 0.150

0.061 0.157

Page 277 of 1910 ends

118 9.83 0.73 0.229
119 9.92 0.73 0.229
120 10.00 0.73 0.229
121 10.08 0.50 0.156
122 10.17 0.50 0.156
123 10.25 0.50 0.156
124 10.33 0.50 0.156
125 10.42 0.50 0.156
126 10.50 0.50 0.156
127 10.58 0.67 0.208
128 10.67 0.67 0.208
129 10.75 0.67 0.208
130 10.83 0.67 0.208
131 10.92 0.67 0.208
132 11.00 0.67 0.208
133 11.08 0.63 0.198
134 11.17 0.63 0.198
135 11.25 0.63 0.198
136 11.33 0.63 0.198
137 11.42 0.63 0.198
138 11.50 0.63 0.198
139 11.58 0.57 0.177
140 11.67 0.57 0.177
141 11.75 0.57 0.177
142 11.83 0.60 0.187
143 11.92 0.60 0.187
144 12.00 0.60 0.187
145 12.08 0.83 0.260
146 12.17 0.83 0.260
147 12.25 0.83 0.260
148 12.33 0.87 0.270
149 12.42 0.87 0.270
150 12.50 0.87 0.270
151 12.58 0.93 0.291
152 12.67 0.93 0.291
153 12.75 0.93 0.291
154 12.83 0.97 0.302
155 12.92 0.97 0.302
156 13.00 0.97 0.302
157 13.08 1.13 0.354
158 13.17 1.13 0.354
159 13.25 1.13 0.354
160 13.33 1.13 0.354
161 13.42 1.13 0.354
162 13.50 1.13 0.354
163 13.58 0.77 0.239
164 13.67 0.77 0.239
165 13.75 0.77 0.239
166 13.83 0.77 0.239
167 13.92 0.77 0.239
168 14.00 0.77 0.239
169 14.08 0.90 0.281
170 14.17 0.90 0.281
171 14.25 0.90 0.281
172 14.33 0.87 0.270
173 14.42 0.87 0.270
174 14.50 0.87 0.270
175 14.58 0.87 0.270
176 14.67 0.87 0.270
177 14.75 0.87 0.270
178 14.83 0.83 0.260
179 14.92 0.83 0.260
180 15.00 0.83 0.260
181 15.08 0.80 0.250
182 15.17 0.80 0.250
183 15.25 0.80 0.250
184 15.33 0.77 0.239
185 15.42 0.77 0.239
186 15.50 0.77 0.239
187 15.58 0.63 0.198
188 15.67 0.63 0.198
189 15.75 0.63 0.198
190 15.83 0.63 0.198
191 15.92 0.63 0.198

0.161)

0.160)

0.159)

0.158)

0.157)

0.156)

0.155)

0.154)

0.153)

0.152)

0.151)

0.150)

0.149)

0.148)

0.147)

0.146)

0.145)

0.144)

0.143)

0.142)

0.141)

0.140)

0.139)

0.138)

0.137)

0.136)

0.135)

0.134)

0.133)

0.132)

0.131)

0.130)

0.129)

0.128)

0.127)

0.126)

0.125)

0.124)

0.123)

0.122)

0.121)

0.120)

0.119)

0.118)

0.117)

0.116)

0.115)

0.114)

0.113)

0.112)

0.112)
-50-

0.064 0.165

0.044 0.112

0.058 0.150

0.055 0.142

0.050 0.127

0.052 0.135

0.073 0.187

0.076 0.195

0.082 0.210

0.084 0.217

0.099 0.255

0.067 0.172

0.079 0.202

0.076 0.195

0.073 0.187

0.070 0.180

0.067 0.172

0.055 0.142

Page 278 of 1910 ends

192 16.00 0.63 0.198
193 16.08 0.13 0.042
194 16.17 0.13 0.042
195 16.25 0.13 0.042
196 16.33 0.13 0.042
197 16.42 0.13 0.042
198 16.50 0.13 0.042
199 16.58 0.10 0.031
200 16.67 0.10 0.031
201 16.75 0.10 0.031
202 16.83 0.10 0.031
203 16.92 0.10 0.031
204 17.00 0.10 0.031
205 17.08 0.17 0.052
206 17.17 0.17 0.052
207 17.25 0.17 0.052
208 17.33 0.17 0.052
209 17.42 0.17 0.052
210 17.50 0.17 0.052
211 17.58 0.17 0.052
212 17.67 0.17 0.052
213 17.75 0.17 0.052
214 17.83 0.13 0.042
215 17.92 0.13 0.042
216 18.00 0.13 0.042
217 18.08 0.13 0.042
218 18.17 0.13 0.042
219 18.25 0.13 0.042
220 18.33 0.13 0.042
221 18.42 0.13 0.042
222 18.50 0.13 0.042
223 18.58 0.10 0.031
224 18.67 0.10 0.031
225 18.75 0.10 0.031
226 18.83 0.07 0.021
227 18.92 0.07 0.021
228 19.00 0.07 0.021
229 19.08 0.10 0.031
230 19.17 0.10 0.031
231 19.25 0.10 0.031
232 19.33 0.13 0.042
233 19.42 0.13 0.042
234 19.50 0.13 0.042
235 19.58 0.10 0.031
236 19.67 0.10 0.031
237 19.75 0.10 0.031
238 19.83 0.07 0.021
239 19.92 0.07 0.021
240 20.00 0.07 0.021
241 20.08 0.10 0.031
242 20.17 0.10 0.031
243 20.25 0.10 0.031
244 20.33 0.10 0.031
245 20.42 0.10 0.031
246 20.50 0.10 0.031
247 20.58 0.10 0.031
248 20.67 0.10 0.031
249 20.75 0.10 0.031
250 20.83 0.07 0.021
251 20.92 0.07 0.021
252 21.00 0.07 0.021
253 21.08 0.10 0.031
254 21.17 0.10 0.031
255 21.25 0.10 0.031
256 21.33 0.07 0.021
257 21.42 0.07 0.021
258 21.50 0.07 0.021
259 21.58 0.10 0.031
260 21.67 0.10 0.031
261 21.75 0.10 0.031
262 21.83 0.07 0.021
263 21.92 0.07 0.021
264 22.00 0.07 0.021
265 22.08 0.10 0.031

0.111)

0.110)

0.109)

0.108)

0.107)

0.106)

0.105)

0.104)

0.103)

0.102)

0.101)

0.100)

0.099)

0.098)

0.097)

0.096)

0.095)

0.094)

0.093)

0.092)

0.091)

0.090)

0.089)

0.088)

0.087)

0.086)

0.085)

0.084)

0.083)

0.082)

0.081)

0.080)

0.080)
-51-

0.055 0.142

0.012 0.030

0.009 0.022

0.015 0.037

0.012 0.030

0.009 0.022

0.006 0.015

0.009 0.022

0.012 0.030

0.009 0.022

0.006 0.015

0.009 0.022

0.006 0.015

0.009 0.022

0.006 0.015

0.009 0.022

0.006 0.015

0.009 0.022

Page 279 of 1910 ends

266 22.17 0.10 0.031 ( 0.079) 0.009 0.022
267 22.25 0.10 0.031 ( 0.079) 0.009 0.022
268 22.33 0.07 0.021 ( 0.079) 0.006 0.015
269 22.42 0.07 0.021 ( 0.079) 0.006 0.015
270 22.50 0.07 0.021 ( 0.078) 0.006 0.015
271 22.58 0.07 0.021 ( 0.078) 0.006 0.015
272 22.67 0.07 0.021 ( 0.078) 0.006 0.015
273 22.75 0.07 0.021 ( 0.078) 0.006 0.015
274 22.83 0.07 0.021 ( 0.077) 0.006 0.015
275 22.92 0.07 0.021 ( 0.077) 0.006 0.015
276 23.00 0.07 0.021 ( 0.077) 0.006 0.015
277 23.08 0.07 0.021 ( 0.077) 0.006 0.015
278 23.17 0.07 0.021 ( 0.077) 0.006 0.015
279 23.25 0.07 0.021 ( 0.077) 0.006 0.015
280 23.33 0.07 0.021 ( 0.076) 0.006 0.015
281 23.42 0.07 0.021 ( 0.076) 0.006 0.015
282 23.50 0.07 0.021 ( 0.076) 0.006 0.015
283 23.58 0.07 0.021 ( 0.076) 0.006 0.015
284 23.67 0.07 0.021 ( 0.076) 0.006 0.015
285 23.75 0.07 0.021 ( 0.076) 0.006 0.015
286 23.83 0.07 0.021 ( 0.076) 0.006 0.015
287 23.92 0.07 0.021 ( 0.076) 0.006 0.015
288 24.00 0.07 0.021 ( 0.076) 0.006 0.015
(Loss Rate Not Used)
Sum = 100.0 Sum = 22.5
Flood volume = Effective rainfall 1.87(In)
times area 1.2(Ac.)/[(In)/(Ft.)] = 0.2(Ac.Ft)
Total soil loss = 0.73(In)
Total soil loss = 0.075(Ac.Ft)
Total rainfall = 2.60(In)
Flood volume = 8358.3 Cubic Feet
Total soil loss = 3250.4 Cubic Feet
Peak flow rate of this hydrograph = 0.316(CFS)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 24 - H O U R STORM
Runoff Hydrograph
Hydrograph in 5 Minute intervals ((CFS))
Time(h+m) Volume Ac.Ft Q(CFS) 0

2.5 5.0.

7.5 10.0.
0+ 5 0.0001 0.01 Q
0+10 0.0002 0.02 Q
0+15 0.0003 0.02 Q
0+20 0.0005 0.02 Q
0+25 0.0007 0.03 Q
0+30 0.0009 0.03 Q
0+35 0.0011 0.03 Q
0+40 0.0013 0.03 0
0+45 0.0015 0.03 Q
0+50 0.0017 0.03 Q
0+55 0.0020 0.04 Q
1+ 0 0.0022 0.04 Q
1+ 5 0.0024 0.03 Q
1+10 0.0026 0.03 Q
1+15 0.0028 0.03 Q
1+20 0.0030 0.03 Q
1+25 0.0032 0.03 Q
1+30 0.0034 0.03 Q
1+35 0.0036 0.03 Q
1+40 0.0038 0.03 Q
1+45 0.0040 0.03 Q
1+50 0.0042 0.03 Q
1+55 0.0045 0.04 Q
2+ 0 0.0047 0.04 Q
2+ 5 0.0050 0.04 QV
2+10 0.0052 0.04 QV
2+15 0.0055 0.04 QV
2+20 0.0057 0.04 QV
2+25 0.0060 0.04 QV
2+30 0.0062 0.04 QV
-52-

Page 280 of 1910 ends

2+35 0.0065 0.04 QV
2+40 0.0069 0.05 QV
2+45 0.0072 0.05 QV
2+50 0.0075 0.05 QV
2+55 0.0078 0.05 QV
3+ 0 0.0081 0.05 QV
3+ 5 0.0085 0.05 QV
3+10 0.0088 0.05 QV
3+15 0.0091 0.05 QV
3+20 0.0094 0.05 QV
3+25 0.0097 0.05 Q V
3+30 0.0101 0.05 Q V
3+35 0.0104 0.05 Q V
3+40 0.0107 0.05 Q V
3+45 0.0110 0.05 Q V
3+50 0.0114 0.05 Q V
3+55 0.0118 0.06 Q V
4+ 0 0.0121 0.06 Q V
4+ 5 0.0125 0.06 Q V
4+10 0.0129 0.06 Q V
4+15 0.0133 0.06 Q V
4+20 0.0137 0.06 Q V
4+25 0.0142 0.07 Q V
4+30 0.0146 0.07 Q V
4+35 0.0151 0.07 Q V
4+40 0.0155 0.07 Q V
4+45 0.0160 0.07 Q V
4+50 0.0165 0.07 Q V
4+55 0.0170 0.07 Q V
5+ 0 0.0175 0.07 Q V
5+ 5 0.0179 0.06 Q V
5+10 0.0183 0.06 Q V
5+15 0.0187 0.06 Q V
5+20 0.0191 0.06 Q V
5+25 0.0195 0.07 Q V
5+30 0.0200 0.07 Q V
5+35 0.0205 0.07 Q V
5+40 0.0210 0.07 Q V
5+45 0.0215 0.07 Q V
5+50 0.0220 0.07 Q V
5+55 0.0225 0.07 Q V
6+ 0 0.0230 0.07 Q V
6+ 5 0.0236 0.08 Q V
6+10 0.0242 0.08 Q V
6+15 0.0247 0.08 Q V
6+20 0.0253 0.08 Q V
6+25 0.0259 0.08 Q V
6+30 0.0265 0.08 Q V
6+35 0.0271 0.09 Q V
6+40 0.0277 0.09 Q V
6+45 0.0284 0.09 Q V
6+50 0.0290 0.09 Q V
6+55 0.0297 0.09 Q V
7+ 0 0.0303 0.09 Q V
7+ 5 0.0309 0.09 Q V
7+10 0.0316 0.09 Q V
7+15 0.0322 0.09 Q V
7+20 0.0329 0.10 Q V
7+25 0.0336 0.10 Q V
7+30 0.0343 0.10 Q V
7+35 0.0350 0.11 Q V
7+40 0.0358 0.11 Q V
7+45 0.0366 0.11 Q V
7+50 0.0374 0.12 Q V
7+55 0.0382 0.12 Q V
8+ 0 0.0391 0.12 Q V
8+ 5 0.0400 0.13 Q V
8+10 0.0409 0.14 Q V
8+15 0.0419 0.14 Q V
8+20 0.0428 0.14 Q V
8+25 0.0438 0.14 Q V
8+30 0.0448 0.14 Q V
8+35 0.0458 0.15 Q V
8+40 0.0468 0.15 Q V
- 53 -

Page 281 of 1910 ends

8+45 0.0478 0.15 Q VI
8+50 0.0489 0.15 Q V
8+55 0.0500 0.16 Q V
9+ 0 0.0511 0.16 Q V
9+ 5 0.0522 0.17 Q V
9+10 0.0534 0.18 Q V
9+15 0.0547 0.18 Q V
9+20 0.0559 0.18 Q V
9+25 0.0572 0.19 Q V
9+30 0.0585 0.19 Q V
9+35 0.0598 0.19 Q V
9+40 0.0611 0.20 Q V
9+45 0.0625 0.20 Q V
9+50 0.0639 0.20 Q V
9+55 0.0653 0.20 Q V
10+ 0 0.0667 0.20 Q V
10+ 5 0.0678 0.16 Q V I f
10+10 0.0688 0.14 Q V
10+15 0.0697 0.14 Q V
10+20 0.0707 0.14 Q V
10+25 0.0716 0.14 Q V
10+30 0.0726 0.14 Q V
10+35 0.0738 0.17 Q V
10+40 0.0750 0.19 Q V
10+45 0.0763 0.19 Q V
10+50 0.0776 0.19 Q V
10+55 0.0789 0.19 Q V
11+ 0 0.0802 0.19 Q V
11+ 5 0.0814 0.18 Q V
11+10 0.0826 0.18 Q V
11+15 0.0838 0.18 Q V
11+20 0.0850 0.18 Q V
11+25 0.0863 0.18 Q V
11+30 0.0875 0.18 Q V
11+35 0.0886 0.16 Q V
11+40 0.0897 0.16 Q V
11+45 0.0908 0.16 Q V
11+50 0.0919 0.16 Q V
11+55 0.0931 0.17 Q V
12+ 0 0.0942 0.17 Q V
12+ 5 0.0957 0.21 Q V
12+10 0.0973 0.23 Q V
12+15 0.0988 0.23 Q V
12+20 0.1005 0.24 Q V
12+25 0.1022 0.24 Q V
12+30 0.1038 0.24 Q V
12+35 0.1056 0.25 Q V
12+40 0.1074 0.26 Q V
12+45 0.1091 0.26 Q V
12+50 0.1110 0.27 Q V
12+55 0.1128 0.27 Q V
13+ 0 0.1147 0.27 Q V
13+ 5 0.1168 0.30 Q V
13+10 0.1189 0.32 Q V
13+15 0.1211 0.32 Q V
13+20 0.1233 0.32 Q V
13+25 0.1255 0.32 Q V
13+30 0.1276 0.32 Q V
13+35 0.1293 0.25 Q V
13+40 0.1308 0.21 Q V
13+45 0.1323 0.21 Q V
13+50 0.1338 0.21 Q V
13+55 0.1352 0.21 Q V
14+ 0 0.1367 0.21 Q V
14+ 5 0.1383 0.24 Q V
14+10 0.1401 0.25 IQ V
14+15 0.1418 0.25 IQ V
14+20 0.1435 0.24 Q V
14+25 0.1451 0.24 Q V
14+30 0.1468 0.24 Q V
14+35 0.1485 0.24 Q V
14+40 0.1501 0.24 Q IV
14+45 0.1518 0.24 Q IV
14+50 0.1534 0.24 Q IV
- 54 -

Page 282 of 1910 ends

14+55 0.1550 0.23 Q
15+ 0 0.1566 0.23 Q
15+ 5 0.1582 0.23 Q
15+10 0.1597 0.22 Q
15+15 0.1612 0.22 Q
15+20 0.1627 0.22 Q
15+25 0.1642 0.21 Q
15+30 0.1657 0.21 Q
15+35 0.1670 0.19 Q
15+40 0.1682 0.18 Q
15+45 0.1694 0.18 Q
15+50 0.1706 0.18 Q
15+55 0.1718 0.18 Q
16+ 0 0.1730 0.18 Q
16+ 5 0.1736 0.08 Q
16+10 0.1739 0.04 Q
16+15 0.1741 0.04 Q
16+20 0.1744 0.04 Q
16+25 0.1747 0.04 Q
16+30 0.1749 0.04 Q
16+35 0.1751 0.03 Q
16+40 0.1753 0.03 Q
16+45 0.1755 0.03 Q
16+50 0.1757 0.03 Q
16+55 0.1759 0.03 Q
17+ 0 0.1761 0.03 Q
17+ 5 0.1764 0.04 Q
17+10 0.1767 0.05 Q
17+15 0.1770 0.05 Q
17+20 0.1773 0.05 Q
17+25 0.1776 0.05 Q
17+30 0.1780 0.05 Q
17+35 0.1783 0.05 Q
17+40 0.1786 0.05 Q
17+45 0.1789 0.05 Q
17+50 0.1792 0.04 Q
17+55 0.1794 0.04 Q
18+ 0 0.1797 0.04 Q
18+ 5 0.1800 0.04 Q
18+10 0.1802 0.04 Q
18+15 0.1805 0.04 Q
18+20 0.1807 0.04 Q
18+25 0.1810 0.04 Q
18+30 0.1812 0.04 Q
18+35 0.1815 0.03 Q
18+40 0.1816 0.03 Q
18+45 0.1818 0.03 Q
18+50 0.1820 0.02 Q
18+55 0.1821 0.02 Q
19+ 0 0.1822 0.02 Q
19+ 5 0.1824 0.02 Q
19+10 0.1826 0.03 Q
19+15 0.1828 0.03 Q
19+20 0.1830 0.03 Q
19+25 0.1833 0.04 Q
19+30 0.1835 0.04 Q
19+35 0.1838 0.03 Q
19+40 0.1839 0.03 Q
19+45 0.1841 0.03 Q
19+50 0.1843 0.02 Q
19+55 0.1844 0.02 Q
20+ 0 0.1845 0.02 Q
20+ 5 0.1847 0.02 Q
20+10 0.1849 0.03 Q
20+15 0.1851 0.03 Q
20+20 0.1853 0.03 Q
20+25 0.1855 0.03 Q
20+30 0.1857 0.03 Q
20+35 0.1859 0.03 Q
20+40 0.1861 0.03 Q
20+45 0.1862 0.03 Q
20+50 0.1864 0.02 Q
20+55 0.1865 0.02 Q
21+ 0 0.1867 0.02 Q
-55-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V

Page 283 of 1910 ends

21+ 5 0.1868 0.02 Q
21+10 0.1870 0.03 Q
21+15 0.1872 0.03 Q
21+20 0.1874 0.02 Q
21+25 0.1875 0.02 Q
21+30 0.1876 0.02 Q
21+35 0.1878 0.02 Q
21+40 0.1880 0.03 Q
21+45 0.1882 0.03 Q
21+50 0.1883 0.02 Q
21+55 0.1884 0.02 Q
22+ 0 0.1886 0.02 Q
22+ 5 0.1887 0.02 Q
22+10 0.1889 0.03 Q
22+15 0.1891 0.03 Q
22+20 0.1893 0.02 Q
22+25 0.1894 0.02 Q
22+30 0.1895 0.02 Q
22+35 0.1897 0.02 Q
22+40 0.1898 0.02 Q
22+45 0.1899 0.02 Q
22+50 0.1900 0.02 Q
22+55 0.1902 0.02 Q
23+ 0 0.1903 0.02 Q
23+ 5 0.1904 0.02 Q
23+10 0.1906 0.02 Q
23+15 0.1907 0.02 Q
23+20 0.1908 0.02 Q
23+25 0.1909 0.02 Q
23+30 0.1911 0.02 Q
23+35 0.1912 0.02 Q
23+40 0.1913 0.02 Q
23+45 0.1915 0.02 Q
23+50 0.1916 0.02 Q
23+55 0.1917 0.02 Q
24+ 0 0.1918 0.02 Q
24+ 5 0.1919 0.01 Q
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
-56-

Page 284 of 1910 ends

Unit H y d r o g r a p h Analysis
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2008, Version 8.1 Study date 08/27/23 File: beau2ex242.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 4029
English (in -lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
Beaumont - Pennsylvania Avenue & I-10 FWY
Inflow Hydrographs, Existing Conditions for comparison
2 -year 24 -hour storm
Drainage Area = 1.23(Ac.) = 0.002 Sq. Mi.

Drainage Area for Depth -Area Areal Adjustment =
Length along longest watercourse = 379.00(Ft.)
Length along longest watercourse measured to centroid
Length along longest watercourse = 0.072 Mi.

Length along longest watercourse measured to centroid
Difference in elevation = 2.70(Ft.)
Slope along watercourse = 37.6148 Ft./Mi.

Average Manning's 'N' = 0.035
Lag time = 0.039 Hr.

Lag time = 2.35 Min.
25% of lag time = 0.59 Min.
40% of lag time = 0.94 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area (Ac .) [1]

1.23 Rainfall(In)[2] Weighting[1*2]

2.60 3.20
100 YEAR Area rainfall data:

Area (Ac.)[1]

1.23 Rainfall(In)[2] Weighting[1*2]

6.40 7.87
STORM EVENT (YEAR) = 2.00
Area Averaged 2 -Year Rainfall =
Area Averaged 100 -Year Rainfall =

2.600(In)

6.400(In)
Point rain (area averaged) = 2.600(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 2.600(In)
Sub -Area Data:

Area(Ac.) Runoff Index Impervious %

1.230 89.00 0.000
Total Area Entered = 1.23(Ac.)
- 57 -

1.23(Ac.) =
142.00(Ft.)

0.027 Mi.

0.002 Sq. Mi.

Page 285 of 1910 ends

RI RI Infil. Rate Impervious Adj. Infil Rate Area% F
AMC2 AMC -1 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

89.0 76.4 0.286 0.000 0.286 1.000 0.286
Sum (F) = 0.286
Area averaged mean soil loss (F)
Minimum soil loss rate ((In/Hr))
(for 24 hour storm duration)
Soil low loss rate (decimal) =
(In/Hr) =
= 0.143

0.900

0.286
Unit Hydrograph
VALLEY S -Curve
Unit Hydrograph Data
Unit time period Time % of lag Distribution Unit Hydrograph (hrs)
Graph % (CFS)
1 0.083
2 0.167
3 0.250
4 0.333
212.475
424.949
637.424
849.898

45.477

42.506

8.309

3.708
Sum = 100.000 Sum=

0.564

0.527

0.103

0.046

0.508) 0.019

0.506) 0.019

0.504) 0.019

0.502) 0.028

0.500) 0.028

0.498) 0.028

0.496) 0.028

0.494) 0.028

0.492) 0.028

0.490) 0.037

0.488) 0.037

0.486) 0.037

0.485) 0.028

0.483) 0.028

0.481) 0.028

0.479) 0.028

0.477) 0.028

0.475) 0.028

0.473) 0.028

0.471) 0.028

0.469) 0.028

0.467) 0.037

0.466) 0.037

0.464) 0.037

0.462) 0.037

0.460) 0.037

0.458) 0.037

0.456) 0.037

0.454) 0.037

0.452) 0.037

0.451) 0.047

0.449) 0.047

0.447) 0.047

0.445) 0.047

0.443) 0.047

0.441) 0.047

0.440) 0.047

0.438) 0.047

0.436) 0.047

0.434) 0.047

0.432) 0.047

0.430) 0.047

0.429) 0.047
- 58 -
Effective
(In/Hr)

0.002

0.003

0.004

0.003

0.004

0.005

Page 286 of 1910 ends

0.427)

0.425)

0.423)

0.422)

0.420)

0.418)

0.416)

0.414)

0.413)

0.411)

0.409)

0.407)

0.406)

0.404)

0.402)

0.400)

0.399)

0.397)

0.395)

0.393)

0.392)

0.390)

0.388)

0.387)

0.385)

0.383)

0.382)

0.380)

0.378)

0.376)

0.375)

0.373)

0.371)

0.370)

0.368)

0.366)

0.365)

0.363)

0.362)

0.360)

0.358)

0.357)

0.355)

0.353)

0.352)

0.350)

0.349)

0.347)

0.345)

0.344)

0.342)

0.341)

0.339)

0.337)

0.336)

0.334)

0.333)

0.331)

0.330)

0.328)

0.327)

0.325)

0.323)

0.322)

0.320)

0.319)

0.317)

0.316)

0.314)

0.313)

0.311)

0.310)

0.308)

0.307)
-59-

0.047 0.005

0.056 0.006

0.066 0.007

0.075 0.008

0.056 0.006

0.066 0.007

0.075 0.008

0.084 0.009

0.094 0.010

0.103 0.011

0.112 0.012

0.122 0.014

0.140 0.016

0.150 0.017

0.159 0.018

0.178 0.020

0.187 0.021

0.197 0.022

Page 287 of 1910 ends

118 9.83 0.73 0.229 ( 0.305) 0.206 0.023
119 9.92 0.73 0.229 ( 0.304) 0.206 0.023
120 10.00 0.73 0.229 ( 0.303) 0.206 0.023
121 10.08 0.50 0.156 ( 0.301) 0.140 0.016
122 10.17 0.50 0.156 ( 0.300) 0.140 0.016
123 10.25 0.50 0.156 ( 0.298) 0.140 0.016
124 10.33 0.50 0.156 ( 0.297) 0.140 0.016
125 10.42 0.50 0.156 ( 0.295) 0.140 0.016
126 10.50 0.50 0.156 ( 0.294) 0.140 0.016
127 10.58 0.67 0.208 ( 0.292) 0.187 0.021
128 10.67 0.67 0.208 ( 0.291) 0.187 0.021
129 10.75 0.67 0.208 ( 0.290) 0.187 0.021
130 10.83 0.67 0.208 ( 0.288) 0.187 0.021
131 10.92 0.67 0.208 ( 0.287) 0.187 0.021
132 11.00 0.67 0.208 ( 0.285) 0.187 0.021
133 11.08 0.63 0.198 ( 0.284) 0.178 0.020
134 11.17 0.63 0.198 ( 0.282) 0.178 0.020
135 11.25 0.63 0.198 ( 0.281) 0.178 0.020
136 11.33 0.63 0.198 ( 0.280) 0.178 0.020
137 11.42 0.63 0.198 ( 0.278) 0.178 0.020
138 11.50 0.63 0.198 ( 0.277) 0.178 0.020
139 11.58 0.57 0.177 ( 0.276) 0.159 0.018
140 11.67 0.57 0.177 ( 0.274) 0.159 0.018
141 11.75 0.57 0.177 ( 0.273) 0.159 0.018
142 11.83 0.60 0.187 ( 0.271) 0.168 0.019
143 11.92 0.60 0.187 ( 0.270) 0.168 0.019
144 12.00 0.60 0.187 ( 0.269) 0.168 0.019
145 12.08 0.83 0.260 ( 0.267) 0.234 0.026
146 12.17 0.83 0.260 ( 0.266) 0.234 0.026
147 12.25 0.83 0.260 ( 0.265) 0.234 0.026
148 12.33 0.87 0.270 ( 0.263) 0.243 0.027
149 12.42 0.87 0.270 ( 0.262) 0.243 0.027
150 12.50 0.87 0.270 ( 0.261) 0.243 0.027
151 12.58 0.93 0.291 0.259 ( 0.262) 0.032
152 12.67 0.93 0.291 0.258 ( 0.262) 0.033
153 12.75 0.93 0.291 0.257 ( 0.262) 0.034
154 12.83 0.97 0.302 0.256 ( 0.271) 0.046
155 12.92 0.97 0.302 0.254 ( 0.271) 0.047
156 13.00 0.97 0.302 0.253 ( 0.271) 0.049
157 13.08 1.13 0.354 0.252 ( 0.318) 0.102
158 13.17 1.13 0.354 0.250 ( 0.318) 0.103
159 13.25 1.13 0.354 0.249 ( 0.318) 0.104
160 13.33 1.13 0.354 0.248 ( 0.318) 0.106
161 13.42 1.13 0.354 0.247 ( 0.318) 0.107
162 13.50 1.13 0.354 0.245 ( 0.318) 0.108
163 13.58 0.77 0.239 ( 0.244) 0.215 0.024
164 13.67 0.77 0.239 ( 0.243) 0.215 0.024
165 13.75 0.77 0.239 ( 0.242) 0.215 0.024
166 13.83 0.77 0.239 ( 0.240) 0.215 0.024
167 13.92 0.77 0.239 ( 0.239) 0.215 0.024
168 14.00 0.77 0.239 ( 0.238) 0.215 0.024
169 14.08 0.90 0.281 0.237 ( 0.253) 0.044
170 14.17 0.90 0.281 0.236 ( 0.253) 0.045
171 14.25 0.90 0.281 0.234 ( 0.253) 0.046
172 14.33 0.87 0.270 0.233 ( 0.243) 0.037
173 14.42 0.87 0.270 0.232 ( 0.243) 0.038
174 14.50 0.87 0.270 0.231 ( 0.243) 0.040
175 14.58 0.87 0.270 0.230 ( 0.243) 0.041
176 14.67 0.87 0.270 0.228 ( 0.243) 0.042
177 14.75 0.87 0.270 0.227 ( 0.243) 0.043
178 14.83 0.83 0.260 0.226 ( 0.234) 0.034
179 14.92 0.83 0.260 0.225 ( 0.234) 0.035
180 15.00 0.83 0.260 0.224 ( 0.234) 0.036
181 15.08 0.80 0.250 0.223 ( 0.225) 0.027
182 15.17 0.80 0.250 0.221 ( 0.225) 0.028
183 15.25 0.80 0.250 0.220 ( 0.225) 0.029
184 15.33 0.77 0.239 ( 0.219) 0.215 0.024
185 15.42 0.77 0.239 ( 0.218) 0.215 0.024
186 15.50 0.77 0.239 ( 0.217) 0.215 0.024
187 15.58 0.63 0.198 ( 0.216) 0.178 0.020
188 15.67 0.63 0.198 ( 0.215) 0.178 0.020
189 15.75 0.63 0.198 ( 0.214) 0.178 0.020
190 15.83 0.63 0.198 ( 0.213) 0.178 0.020
191 15.92 0.63 0.198 ( 0.211) 0.178 0.020
- 60

Page 288 of 1910 ends

0.210)

0.209)

0.208)

0.207)

0.206)

0.205)

0.204)

0.203)

0.202)

0.201)

0.200)

0.199)

0.198)

0.197)

0.196)

0.195)

0.194)

0.193)

0.192)

0.191)

0.190)

0.189)

0.188)

0.187)

0.186)

0.185)

0.184)

0.183)

0.182)

0.181)

0.180)

0.179)

0.178)

0.177)

0.176)

0.175)

0.174)

0.173)

0.172)

0.171)

0.170)

0.169)

0.168)

0.167)

0.166)

0.165)

0.164)

0.163)

0.162)

0.161)

0.160)

0.159)

0.158)

0.157)

0.156)

0.155)

0.154)

0.153)

0.152)

0.151)

0.151)
-61-

0.178 0.020

0.037 0.004

0.028 0.003

0.047 0.005

0.037 0.004

0.028 0.003

0.019 0.002

0.028 0.003

0.037 0.004

0.028 0.003

0.019 0.002

0.028 0.003

0.019 0.002

0.028 0.003

0.019 0.002

0.028 0.003

0.019 0.002

0.028 0.003

Page 289 of 1910 ends

266 22.17 0.10 0.031 ( 0.150) 0.028 0.003
267 22.25 0.10 0.031 ( 0.150) 0.028 0.003
268 22.33 0.07 0.021 ( 0.149) 0.019 0.002
269 22.42 0.07 0.021 ( 0.149) 0.019 0.002
270 22.50 0.07 0.021 ( 0.148) 0.019 0.002
271 22.58 0.07 0.021 ( 0.148) 0.019 0.002
272 22.67 0.07 0.021 ( 0.148) 0.019 0.002
273 22.75 0.07 0.021 ( 0.147) 0.019 0.002
274 22.83 0.07 0.021 ( 0.147) 0.019 0.002
275 22.92 0.07 0.021 ( 0.146) 0.019 0.002
276 23.00 0.07 0.021 ( 0.146) 0.019 0.002
277 23.08 0.07 0.021 ( 0.146) 0.019 0.002
278 23.17 0.07 0.021 ( 0.145) 0.019 0.002
279 23.25 0.07 0.021 ( 0.145) 0.019 0.002
280 23.33 0.07 0.021 ( 0.145) 0.019 0.002
281 23.42 0.07 0.021 ( 0.145) 0.019 0.002
282 23.50 0.07 0.021 ( 0.144) 0.019 0.002
283 23.58 0.07 0.021 ( 0.144) 0.019 0.002
284 23.67 0.07 0.021 ( 0.144) 0.019 0.002
285 23.75 0.07 0.021 ( 0.144) 0.019 0.002
286 23.83 0.07 0.021 ( 0.143) 0.019 0.002
287 23.92 0.07 0.021 ( 0.143) 0.019 0.002
288 24.00 0.07 0.021 ( 0.143) 0.019 0.002
(Loss Rate Not Used)
Sum = 100.0 Sum = 3.8
Flood volume = Effective rainfall 0.31(In)
times area 1.2(Ac.)/[(In)/(Ft.)] = 0.0(Ac.Ft)
Total soil loss = 2.29(In)
Total soil loss = 0.234(Ac.Ft)
Total rainfall = 2.60(In)
Flood volume = 1402.3 Cubic Feet
Total soil loss = 10206.4 Cubic Feet
Peak flow rate of this hydrograph = 0.133(CFS)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 24 - H O U R STORM
Runoff Hydrograph
Hydrograph in 5 Minute intervals ((CFS))
Time(h+m) Volume Ac.Ft Q(CFS) 0

2.5 5.0.

7.5 10.0.
0+ 5 0.0000 0.00 Q
0+10 0.0000 0.00 Q
0+15 0.0000 0.00 Q
0+20 0.0001 0.00 Q
0+25 0.0001 0.00 Q
0+30 0.0001 0.00 Q
0+35 0.0001 0.00 Q
0+40 0.0002 0.00 Q
0+45 0.0002 0.00 Q
0+50 0.0002 0.00 Q
0+55 0.0003 0.01 Q
1+ 0 0.0003 0.01 Q
1+ 5 0.0003 0.00 Q
1+10 0.0004 0.00 Q
1+15 0.0004 0.00 Q
1+20 0.0004 0.00 Q
1+25 0.0004 0.00 Q
1+30 0.0005 0.00 Q
1+35 0.0005 0.00 Q
1+40 0.0005 0.00 Q
1+45 0.0005 0.00 Q
1+50 0.0006 0.00 Q
1+55 0.0006 0.01 Q
2+ 0 0.0006 0.01 Q
2+ 5 0.0007 0.01 Q
2+10 0.0007 0.01 Q
2+15 0.0007 0.01 Q
2+20 0.0008 0.01 Q
2+25 0.0008 0.01 QV
2+30 0.0009 0.01 QV
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2+35 0.0009 0.01 QV
2+40 0.0009 0.01 QV
2+45 0.0010 0.01 QV
2+50 0.0010 0.01 QV
2+55 0.0011 0.01 QV
3+ 0 0.0011 0.01 QV
3+ 5 0.0012 0.01 QV
3+10 0.0012 0.01 QV
3+15 0.0012 0.01 QV
3+20 0.0013 0.01 QV
3+25 0.0013 0.01 QV
3+30 0.0014 0.01 QV
3+35 0.0014 0.01 QV
3+40 0.0015 0.01 QV
3+45 0.0015 0.01 QV
3+50 0.0016 0.01 QV
3+55 0.0016 0.01 Q V
4+ 0 0.0017 0.01 Q V
4+ 5 0.0017 0.01 Q V
4+10 0.0018 0.01 Q V
4+15 0.0018 0.01 Q V
4+20 0.0019 0.01 Q V
4+25 0.0019 0.01 Q V
4+30 0.0020 0.01 Q V
4+35 0.0021 0.01 Q V
4+40 0.0021 0.01 Q V
4+45 0.0022 0.01 Q V
4+50 0.0023 0.01 Q V
4+55 0.0023 0.01 Q V
5+ 0 0.0024 0.01 Q V
5+ 5 0.0025 0.01 Q V
5+10 0.0025 0.01 Q V
5+15 0.0026 0.01 Q V
5+20 0.0026 0.01 Q V
5+25 0.0027 0.01 Q V
5+30 0.0028 0.01 Q V
5+35 0.0028 0.01 Q V
5+40 0.0029 0.01 Q V
5+45 0.0030 0.01 Q V
5+50 0.0030 0.01 Q V
5+55 0.0031 0.01 Q V
6+ 0 0.0032 0.01 Q V
6+ 5 0.0032 0.01 Q V
6+10 0.0033 0.01 Q V
6+15 0.0034 0.01 Q V
6+20 0.0035 0.01 Q V
6+25 0.0036 0.01 Q V
6+30 0.0036 0.01 Q V
6+35 0.0037 0.01 Q V
6+40 0.0038 0.01 Q V
6+45 0.0039 0.01 Q V
6+50 0.0040 0.01 Q V
6+55 0.0041 0.01 Q V
7+ 0 0.0042 0.01 Q V
7+ 5 0.0043 0.01 Q V
7+10 0.0044 0.01 Q V
7+15 0.0044 0.01 Q V
7+20 0.0045 0.01 Q V
7+25 0.0046 0.01 Q V
7+30 0.0047 0.01 Q V
7+35 0.0048 0.01 Q V
7+40 0.0049 0.02 Q V
7+45 0.0050 0.02 Q V
7+50 0.0052 0.02 Q V
7+55 0.0053 0.02 Q V
8+ 0 0.0054 0.02 Q V
8+ 5 0.0055 0.02 Q V
8+10 0.0056 0.02 Q V
8+15 0.0058 0.02 Q V
8+20 0.0059 0.02 Q V
8+25 0.0060 0.02 Q V
8+30 0.0062 0.02 Q V
8+35 0.0063 0.02 Q V
8+40 0.0064 0.02 Q V
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8+45 0.0066 0.02 Q
8+50 0.0067 0.02 Q
8+55 0.0069 0.02 Q
9+ 0 0.0070 0.02 Q
9+ 5 0.0072 0.02 Q
9+10 0.0074 0.02 Q
9+15 0.0075 0.02 Q
9+20 0.0077 0.03 Q
9+25 0.0079 0.03 Q
9+30 0.0081 0.03 Q
9+35 0.0082 0.03 Q
9+40 0.0084 0.03 Q
9+45 0.0086 0.03 Q
9+50 0.0088 0.03 Q
9+55 0.0090 0.03 Q
10+ 0 0.0092 0.03 Q
10+ 5 0.0094 0.02 Q
10+10 0.0095 0.02 Q
10+15 0.0096 0.02 Q
10+20 0.0098 0.02 Q
10+25 0.0099 0.02 Q
10+30 0.0100 0.02 Q
10+35 0.0102 0.02 Q
10+40 0.0104 0.03 Q
10+45 0.0105 0.03 Q
10+50 0.0107 0.03 Q
10+55 0.0109 0.03 Q
11+ 0 0.0111 0.03 Q
11+ 5 0.0112 0.03 Q
11+10 0.0114 0.02 Q
11+15 0.0116 0.02 Q
11+20 0.0117 0.02 Q
11+25 0.0119 0.02 Q
11+30 0.0121 0.02 Q
11+35 0.0122 0.02 Q
11+40 0.0124 0.02 Q
11+45 0.0126 0.02 Q
11+50 0.0127 0.02 Q
11+55 0.0129 0.02 Q
12+ 0 0.0130 0.02 Q
12+ 5 0.0132 0.03 Q
12+10 0.0134 0.03 Q
12+15 0.0136 0.03 Q
12+20 0.0139 0.03 Q
12+25 0.0141 0.03 Q
12+30 0.0143 0.03 Q
12+35 0.0146 0.04 Q
12+40 0.0149 0.04 Q
12+45 0.0151 0.04 Q
12+50 0.0155 0.05 Q
12+55 0.0159 0.06 Q
13+ 0 0.0163 0.06 Q
13+ 5 0.0169 0.09 Q
13+10 0.0177 0.12 Q
13+15 0.0186 0.13 Q
13+20 0.0195 0.13 Q
13+25 0.0204 0.13 Q
13+30 0.0213 0.13 Q
13+35 0.0219 0.09 Q
13+40 0.0222 0.04 Q
13+45 0.0224 0.03 Q
13+50 0.0226 0.03 Q
13+55 0.0228 0.03 Q
14+ 0 0.0230 0.03 Q
14+ 5 0.0233 0.04 Q
14+10 0.0237 0.05 Q
14+15 0.0241 0.06 Q
14+20 0.0244 0.05 Q
14+25 0.0247 0.05 Q
14+30 0.0251 0.05 Q
14+35 0.0254 0.05 Q
14+40 0.0258 0.05 Q
14+45 0.0261 0.05 Q
14+50 0.0265 0.05 Q
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
I V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IV
IV
IV
I V
I V
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14+55 0.0268 0.04 Q
15+ 0 0.0271 0.04 Q
15+ 5 0.0273 0.04 Q
15+10 0.0276 0.04 Q
15+15 0.0278 0.04 Q
15+20 0.0281 0.03 Q
15+25 0.0283 0.03 Q
15+30 0.0285 0.03 Q
15+35 0.0287 0.03 Q
15+40 0.0288 0.03 Q
15+45 0.0290 0.02 Q
15+50 0.0292 0.02 Q
15+55 0.0293 0.02 Q
16+ 0 0.0295 0.02 Q
16+ 5 0.0296 0.02 Q
16+10 0.0297 0.01 Q
16+15 0.0297 0.01 Q
16+20 0.0298 0.01 Q
16+25 0.0298 0.01 Q
16+30 0.0298 0.01 Q
16+35 0.0299 0.00 Q
16+40 0.0299 0.00 Q
16+45 0.0299 0.00 Q
16+50 0.0299 0.00 Q
16+55 0.0300 0.00 Q
17+ 0 0.0300 0.00 Q
17+ 5 0.0300 0.01 Q
17+10 0.0301 0.01 Q
17+15 0.0301 0.01 Q
17+20 0.0302 0.01 Q
17+25 0.0302 0.01 Q
17+30 0.0302 0.01 Q
17+35 0.0303 0.01 Q
17+40 0.0303 0.01 Q
17+45 0.0304 0.01 Q
17+50 0.0304 0.01 Q
17+55 0.0305 0.01 Q
18+ 0 0.0305 0.01 Q
18+ 5 0.0305 0.01 Q
18+10 0.0306 0.01 Q
18+15 0.0306 0.01 Q
18+20 0.0306 0.01 Q
18+25 0.0307 0.01 Q
18+30 0.0307 0.01 Q
18+35 0.0307 0.00 Q
18+40 0.0308 0.00 Q
18+45 0.0308 0.00 Q
18+50 0.0308 0.00 Q
18+55 0.0308 0.00 Q
19+ 0 0.0308 0.00 Q
19+ 5 0.0309 0.00 Q
19+10 0.0309 0.00 Q
19+15 0.0309 0.00 Q
19+20 0.0310 0.00 Q
19+25 0.0310 0.01 Q
19+30 0.0310 0.01 Q
19+35 0.0311 0.00 Q
19+40 0.0311 0.00 Q
19+45 0.0311 0.00 Q
19+50 0.0311 0.00 Q
19+55 0.0311 0.00 Q
20+ 0 0.0312 0.00 Q
20+ 5 0.0312 0.00 Q
20+10 0.0312 0.00 Q
20+15 0.0312 0.00 Q
20+20 0.0313 0.00 Q
20+25 0.0313 0.00 Q
20+30 0.0313 0.00 Q
20+35 0.0313 0.00 Q
20+40 0.0314 0.00 Q
20+45 0.0314 0.00 Q
20+50 0.0314 0.00 Q
20+55 0.0314 0.00 Q
21+ 0 0.0315 0.00 Q
-65-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
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V
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V
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V
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V
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Page 293 of 1910 ends

21+ 5 0.0315 0.00 Q
21+10 0.0315 0.00 Q
21+15 0.0315 0.00 Q
21+20 0.0316 0.00 Q
21+25 0.0316 0.00 Q
21+30 0.0316 0.00 Q
21+35 0.0316 0.00 Q
21+40 0.0316 0.00 Q
21+45 0.0317 0.00 Q
21+50 0.0317 0.00 Q
21+55 0.0317 0.00 Q
22+ 0 0.0317 0.00 Q
22+ 5 0.0317 0.00 Q
22+10 0.0318 0.00 Q
22+15 0.0318 0.00 Q
22+20 0.0318 0.00 Q
22+25 0.0318 0.00 Q
22+30 0.0319 0.00 Q
22+35 0.0319 0.00 Q
22+40 0.0319 0.00 Q
22+45 0.0319 0.00 Q
22+50 0.0319 0.00 Q
22+55 0.0319 0.00 Q
23+ 0 0.0320 0.00 Q
23+ 5 0.0320 0.00 Q
23+10 0.0320 0.00 Q
23+15 0.0320 0.00 Q
23+20 0.0320 0.00 Q
23+25 0.0321 0.00 Q
23+30 0.0321 0.00 Q
23+35 0.0321 0.00 Q
23+40 0.0321 0.00 Q
23+45 0.0321 0.00 Q
23+50 0.0321 0.00 Q
23+55 0.0322 0.00 Q
24+ 0 0.0322 0.00 Q
24+ 5 0.0322 0.00 Q
24+10 0.0322 0.00 Q
24+15 0.0322 0.00 Q
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
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V
V
V
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Page 294 of 1910 ends

FLOOD HYDROGRAPH ROUTING PROGRAM
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2005
Study date: 08/29/23
Beaumont - Pennsylvania Avenue & I-10 FWY
Detention Basin Routing Calculations
Inflow Hydrograph, 2 -year 24 -hour storm
Program License Serial Number 4029
********************* HYDROGRAPH INFORMATION ********************** From study/file name: beau2pr242.rte
****************************HYDROGRAPH DATA**************************** Number of intervals = 289
Time interval = 5.0 (Min.)
Maximum/Peak flow rate = 0.316 (CFS)
Total volume = 0.192 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Process from Point/Station 100.000 to Point/Station 101.000 **** RETARDING BASIN ROUTING ****
User entry of depth -outflow -storage data
Total number of inflow hydrograph intervals = 289
Hydrograph time unit = 5.000 (Min.)
Initial depth in storage basin = 0.00(Ft.)
Initial basin depth = 0.00 (Ft.)
Initial basin storage = 0.00 (Ac.Ft)
Initial basin outflow = 0.00 (CFS)
Depth vs. Storage and Depth vs. Discharge data:

Basin Depth Storage Outflow (S-0*dt/2) (S+0*dt/2)
(Ft.) (Ac.Ft) (CFS) (Ac.Ft) (Ac.Ft)

0.000

1.000

2.000

3.000

4.000

5.000

6.000

0.000

0.030

0.070

0.100

0.140

0.170

0.210

0.000

0.060

0.080

0.100

0.120

0.500

5.720

0.000

0.030

0.070

0.100

0.140

0.168

0.190

0.000

0.030

0.070

0.100

0.140

0.172

0.230
Hydrograph Detention Basin Routing
Graph values: 'I'= unit inflow; 'O'=outflow at time shown Time Inflow Outflow Storage Depth
(Hours) (CFS) (CFS) (Ac.Ft) .0 0.1 0.16 0.24 0.32 (Ft.)

0.083 0.01 0.00 0.000 OI I I I I 0.00

0.167 0.02 0.00 0.000 OI I I I I 0.00
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0.250 0.02 0.00 0.000

0.333 0.02 0.00 0.000

0.417 0.03 0.00 0.001

0.500 0.03 0.00 0.001

0.583 0.03 0.00 0.001

0.667 0.03 0.00 0.001

0.750 0.03 0.00 0.001

0.833 0.03 0.00 0.001

0.917 0.04 0.00 0.002

1.000 0.04 0.00 0.002

1.083 0.03 0.00 0.002

1.167 0.03 0.00 0.002

1.250 0.03 0.00 0.002

1.333 0.03 0.01 0.003

1.417 0.03 0.01 0.003

1.500 0.03 0.01 0.003

1.583 0.03 0.01 0.003

1.667 0.03 0.01 0.003

1.750 0.03 0.01 0.003

1.833 0.03 0.01 0.004

1.917 0.04 0.01 0.004

2.000 0.04 0.01 0.004

2.083 0.04 0.01 0.004

2.167 0.04 0.01 0.004

2.250 0.04 0.01 0.005

2.333 0.04 0.01 0.005

2.417 0.04 0.01 0.005

2.500 0.04 0.01 0.005

2.583 0.04 0.01 0.005

2.667 0.05 0.01 0.006

2.750 0.05 0.01 0.006

2.833 0.05 0.01 0.006

2.917 0.05 0.01 0.006

3.000 0.05 0.01 0.007

3.083 0.05 0.01 0.007

3.167 0.05 0.01 0.007

3.250 0.05 0.01 0.007

3.333 0.05 0.01 0.007

3.417 0.05 0.02 0.008

3.500 0.05 0.02 0.008

3.583 0.05 0.02 0.008

3.667 0.05 0.02 0.008

3.750 0.05 0.02 0.008

3.833 0.05 0.02 0.009

3.917 0.06 0.02 0.009

4.000 0.06 0.02 0.009

4.083 0.06 0.02 0.009

4.167 0.06 0.02 0.010

4.250 0.06 0.02 0.010

4.333 0.06 0.02 0.010

4.417 0.07 0.02 0.011

4.500 0.07 0.02 0.011

4.583 0.07 0.02 0.011

4.667 0.07 0.02 0.011

4.750 0.07 0.02 0.012

4.833 0.07 0.02 0.012

4.917 0.07 0.02 0.012

5.000 0.07 0.03 0.013

5.083 0.06 0.03 0.013

5.167 0.06 0.03 0.013

5.250 0.06 0.03 0.013

5.333 0.06 0.03 0.014

5.417 0.07 0.03 0.014

5.500 0.07 0.03 0.014

5.583 0.07 0.03 0.014

5.667 0.07 0.03 0.015

5.750 0.07 0.03 0.015

5.833 0.07 0.03 0.015

5.917 0.07 0.03 0.016

6.000 0.07 0.03 0.016

6.083 0.08 0.03 0.016

6.167 0.08 0.03 0.017

6.250 0.08 0.03 0.017

6.333 0.08 0.03 0.017
OI
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
O I
0 O I
O
0 0
O
O
0 O I
O I
0 0
0 0
0 0
0 0
I
I
I
I
-68-

0.01 0.01

0.02 0.03

0.03 0.04

0.04 0.05

0.06 0.07

0.07 0.08

0.08 0.09

0.09 0.10

0.10 0.11

0.11 0.12

0.13 0.13

0.14 0.15

0.15 0.16

0.16 0.17

0.18 0.19

0.19 0.20

0.21 0.22

0.22 0.23

0.24 0.25

0.25 0.26

0.27 0.27

0.28 0.29

0.30 0.31

0.31 0.32

0.33 0.34

0.35 0.36

0.37 0.38

0.39 0.40

0.41 0.42

0.43 0.44

0.45 0.45

0.46 0.47

0.48 0.49

0.50 0.51

0.52 0.53

0.54 0.55

0.56 0.57

Page 296 of 1910 ends

6.417 0.08 0.04 0.018

6.500 0.08 0.04 0.018

6.583 0.09 0.04 0.018

6.667 0.09 0.04 0.019

6.750 0.09 0.04 0.019

6.833 0.09 0.04 0.019

6.917 0.09 0.04 0.020

7.000 0.09 0.04 0.020

7.083 0.09 0.04 0.020

7.167 0.09 0.04 0.021

7.250 0.09 0.04 0.021

7.333 0.10 0.04 0.022

7.417 0.10 0.04 0.022

7.500 0.10 0.04 0.022

7.583 0.11 0.05 0.023

7.667 0.11 0.05 0.023

7.750 0.11 0.05 0.024

7.833 0.12 0.05 0.024

7.917 0.12 0.05 0.025

8.000 0.12 0.05 0.025

8.083 0.13 0.05 0.026

8.167 0.14 0.05 0.026

8.250 0.14 0.05 0.027

8.333 0.14 0.05 0.027

8.417 0.14 0.06 0.028

8.500 0.14 0.06 0.028

8.583 0.15 0.06 0.029

8.667 0.15 0.06 0.030

8.750 0.15 0.06 0.030

8.833 0.15 0.06 0.031

8.917 0.16 0.06 0.032

9.000 0.16 0.06 0.032

9.083 0.17 0.06 0.033

9.167 0.18 0.06 0.034

9.250 0.18 0.06 0.035

9.333 0.18 0.06 0.035

9.417 0.19 0.06 0.036

9.500 0.19 0.06 0.037

9.583 0.19 0.06 0.038

9.667 0.20 0.06 0.039

9.750 0.20 0.06 0.040

9.833 0.20 0.07 0.041

9.917 0.20 0.07 0.042

10.000 0.20 0.07 0.042

10.083 0.16 0.07 0.043

10.167 0.14 0.07 0.044

10.250 0.14 0.07 0.044

10.333 0.14 0.07 0.045

10.417 0.14 0.07 0.045

10.500 0.14 0.07 0.046

10.583 0.17 0.07 0.046

10.667 0.19 0.07 0.047

10.750 0.19 0.07 0.048

10.833 0.19 0.07 0.049

10.917 0.19 0.07 0.050

11.000 0.19 0.07 0.050

11.083 0.18 0.07 0.051

11.167 0.18 0.07 0.052

11.250 0.18 0.07 0.053

11.333 0.18 0.07 0.053

11.417 0.18 0.07 0.054

11.500 0.18 0.07 0.055

11.583 0.16 0.07 0.055

11.667 0.16 0.07 0.056

11.750 0.16 0.07 0.057

11.833 0.16 0.07 0.057

11.917 0.17 0.07 0.058

12.000 0.17 0.07 0.059

12.083 0.21 0.07 0.059

12.167 0.23 0.08 0.060

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0.59 0.60

0.61 0.62

0.63 0.65

0.66 0.67

0.68 0.69

0.71 0.72

0.73 0.74

0.76 0.77

0.79 0.80

0.82 0.84

0.85 0.87

0.89 0.91

0.93 0.95

0.97 0.99

1.01 1.02

1.04 1.06

1.07 1.09

1.11 1.13

1.15 1.18

1.20 1.22

1.24 1.26

1.29 1.31

1.33 1.35

1.36 1.37

1.38 1.40

1.41 1.43

1.45 1.47

1.49 1.51

1.53 1.55

1.57 1.58

1.60 1.62

1.64 1.65

1.67 1.68

1.70 1.71

1.73 1.76

1.78 1.81

1.84 1.87

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1.90 1.93

1.96 1.99

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2.23 2.28

2.33 2.38

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2.55 2.57

2.61 2.64

2.68 2.71

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2.81 2.85

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3.17 3.19

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3.07 3.06

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3.01 3.00

2.99 2.98

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2.91 2.90

2.88 2.87

2.86 2.84

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2.80 2.78

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2.00 1.99

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1.96 1.95

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1.08 1.07

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0.15 0.14

0.14 0.14

0.13 0.13

0.12 0.12

Page 302 of 1910 ends

43.417 0.00 0.01 0.004 0

43.500 0.00 0.01 0.003 0

43.583 0.00 0.01 0.003 0

43.667 0.00 0.01 0.003 0

43.750 0.00 0.01 0.003 0

43.833 0.00 0.01 0.003 0

43.917 0.00 0.01 0.003 0

44.000 0.00 0.01 0.003 0

44.083 0.00 0.01 0.003 0

44.167 0.00 0.01 0.003 0

44.250 0.00 0.01 0.003 0

44.333 0.00 0.01 0.003 0

44.417 0.00 0.01 0.003 0

44.500 0.00 0.01 0.003 0

44.583 0.00 0.01 0.003 0

44.667 0.00 0.01 0.003 0

44.750 0.00 0.01 0.003 0

44.833 0.00 0.01 0.003 0

44.917 0.00 0.01 0.003 0

45.000 0.00 0.01 0.003 0

45.083 0.00 0.01 0.003 0

45.167 0.00 0.01 0.003 0

45.250 0.00 0.01 0.003 0

45.333 0.00 0.01 0.003 0

45.417 0.00 0.01 0.003 0

45.500 0.00 0.00 0.002 0

45.583 0.00 0.00 0.002 0

45.667 0.00 0.00 0.002 0

45.750 0.00 0.00 0.002 0

45.833 0.00 0.00 0.002 0

45.917 0.00 0.00 0.002 0

46.000 0.00 0.00 0.002 0

46.083 0.00 0.00 0.002 0

46.167 0.00 0.00 0.002 0

46.250 0.00 0.00 0.002 0

46.333 0.00 0.00 0.002 0

46.417 0.00 0.00 0.002 0

46.500 0.00 0.00 0.002 0

46.583 0.00 0.00 0.002 0

46.667 0.00 0.00 0.002 0

46.750 0.00 0.00 0.002 0

46.833 0.00 0.00 0.002 0

46.917 0.00 0.00 0.002 0

47.000 0.00 0.00 0.002 0

47.083 0.00 0.00 0.002 0

47.167 0.00 0.00 0.002 0

47.250 0.00 0.00 0.002 0

47.333 0.00 0.00 0.002 0

47.417 0.00 0.00 0.002 0

47.500 0.00 0.00 0.002 0

47.583 0.00 0.00 0.002 0

47.667 0.00 0.00 0.002 0

47.750 0.00 0.00 0.002 0

47.833 0.00 0.00 0.002 0

47.917 0.00 0.00 0.002 0

48.000 0.00 0.00 0.002 0

48.083 0.00 0.00 0.002 0

48.167 0.00 0.00 0.002 0

48.250 0.00 0.00 0.002 0

48.333 0.00 0.00 0.002 0

48.417 0.00 0.00 0.002 0

48.500 0.00 0.00 0.002 0

48.583 0.00 0.00 0.001 0

48.667 0.00 0.00 0.001 0

48.750 0.00 0.00 0.001 0

48.833 0.00 0.00 0.001 0

48.917 0.00 0.00 0.001 0

49.000 0.00 0.00 0.001 0

49.083 0.00 0.00 0.001 0

49.167 0.00 0.00 0.001 0

49.250 0.00 0.00 0.001 0

49.333 0.00 0.00 0.001 0

49.417 0.00 0.00 0.001 0

49.500 0.00 0.00 0.001 0
-75-

0.12 0.12

0.11 0.11

0.10 0.10

0.10 0.09

0.09 0.09

0.08 0.08

0.08 0.07

0.07 0.07

0.07 0.06

0.06 0.06

0.06 0.05

0.05 0.05

0.04 0.04

Page 303 of 1910 ends

49.583 0.00 0.00 0.001 0

49.667 0.00 0.00 0.001 0

49.750 0.00 0.00 0.001 0

49.833 0.00 0.00 0.001 0

49.917 0.00 0.00 0.001 0

50.000 0.00 0.00 0.001 0

50.083 0.00 0.00 0.001 O

50.167 0.00 0.00 0.001 0

50.250 0.00 0.00 0.001 0

50.333 0.00 0.00 0.001 0

50.417 0.00 0.00 0.001 O

50.500 0.00 0.00 0.001 0

50.583 0.00 0.00 0.001 0

50.667 0.00 0.00 0.001 O

50.750 0.00 0.00 0.001 0

50.833 0.00 0.00 0.001 0

50.917 0.00 0.00 0.001 0

51.000 0.00 0.00 0.001 O

51.083 0.00 0.00 0.001 0

51.167 0.00 0.00 0.001 0

51.250 0.00 0.00 0.001 0

51.333 0.00 0.00 0.001 0

51.417 0.00 0.00 0.001 O

51.500 0.00 0.00 0.001 0

51.583 0.00 0.00 0.001 0

51.667 0.00 0.00 0.001 0

51.750 0.00 0.00 0.001 0

51.833 0.00 0.00 0.001 0

51.917 0.00 0.00 0.001 0

52.000 0.00 0.00 0.001 0

52.083 0.00 0.00 0.001 0

52.167 0.00 0.00 0.001 O

52.250 0.00 0.00 0.001 0

52.333 0.00 0.00 0.001 0

52.417 0.00 0.00 0.001 0

52.500 0.00 0.00 0.001 0

52.583 0.00 0.00 0.001 0

52.667 0.00 0.00 0.001 0

52.750 0.00 0.00 0.001 0

52.833 0.00 0.00 0.001 0

52.917 0.00 0.00 0.001 0

53.000 0.00 0.00 0.001 0

53.083 0.00 0.00 0.001 0

53.167 0.00 0.00 0.001 0

53.250 0.00 0.00 0.001 0

53.333 0.00 0.00 0.001 O

53.417 0.00 0.00 0.001 0

53.500 0.00 0.00 0.001 0

53.583 0.00 0.00 0.001 0

53.667 0.00 0.00 0.001 O

53.750 0.00 0.00 0.001 0

53.833 0.00 0.00 0.001 0

53.917 0.00 0.00 0.001 0

54.000 0.00 0.00 0.001 0

54.083 0.00 0.00 0.001 O

54.167 0.00 0.00 0.001 0

54.250 0.00 0.00 0.001 0

54.333 0.00 0.00 0.001 0

54.417 0.00 0.00 0.001 O

54.500 0.00 0.00 0.001 0

54.583 0.00 0.00 0.001 0

54.667 0.00 0.00 0.001 O

54.750 0.00 0.00 0.001 O

54.833 0.00 0.00 0.001 0

54.917 0.00 0.00 0.001 0

55.000 0.00 0.00 0.001 O

55.083 0.00 0.00 0.001 0

55.167 0.00 0.00 0.001 0

55.250 0.00 0.00 0.000 0

0.04 0.04

0.03 0.03

0.02 0.02

0.02 ****************************HYDROGRAPH DATA**************************** Number of intervals = 663
Time interval = 5.0 (Min.)
Maximum/Peak flow rate =
-76-

0.104 (CFS)

Page 304 of 1910 ends

Total volume = 0.191 (Ac.Ft)
Status of hydrographs being held in storage
Stream 1 Stream 2 Stream 3 Stream 4 Stream 5
Peak (CFS) 0.000 0.000 0.000 0.000 0.000
Vol (Ac.Ft) 0.000 0.000 0.000 0.000 0.000
*********************************************************************** - 77 -

Page 305 of 1910 ends

Appendix 8: Source Control
Pollutant Sources/Source Control Checklist
- 78 -

Page 306 of 1910 ends

Source Control BMPs
Potential Sources of
Runoff Pollutants
Permanent Controls—
Show on
WQMP Drawings
Permanent Controls —List in
WQMP
Table and Narrative
Operational BMPs—Include in WQMP
Table and Narrative
►/ A. On -site storm drain inlets
/1 Locations of inlets.

A/ Mark all inlets with the words
a Maintain and periodically repaint or replace
"Only Rain Down the Storm
Drain" or similar. Catch Basin
Markers may be available from the
Riverside County Flood Control
and Water Conservation District,
call 951.955.1200 to verify.
inlet markings.
12 Provide stormwater pollution prevention
information to new site owners, lessees, or
operators.
/1 See applicable operational BMPs in Fact
Sheet SC -44, "Drainage System Maintenance,"
in the CASQA Stormwater Quality Handbooks at
www.cabmphandbooks.com
L Include the following in lease agreements:
"Tenant shall not allow anyone to discharge
anything to storm drains or to store or deposit
materials so as to create a potential discharge to
storm drains."
❑ B. Interior floor drains and
elevator shaft sump pumps
❑ State that interior floor drains and
elevator shaft sump pumps will be
plumbed to sanitary sewer.
❑ Inspect and maintain drains to prevent
blockages and overflow.
❑ c. Interior parking garages
❑ State that parking garage floor
drains will be plumbed to the sanitary
sewer.
❑ Inspect and maintain drains to prevent
blockages and overflow.
❑ Dl. Need for future indoor &
structural pest control
❑ Note building design features that
discourage entry of pests.
❑ Provide Integrated Pest Management
information to owners, lessees, and operators.
►/ D2. Landscape/ Outdoor
a Show locations of native
State that final landscape plans will
accomplish all of the following.
a Maintain landscaping using minimum or no
Pesticide Use
trees or areas of shrubs and
ground cover to be undisturbed
and retained.
pesticides.

Preserve existing native trees,
shrubs, and ground cover to the
maximum extent possible.
12 See applicable operational BMPs in "What
you should know for Landscape and
Design landscaping to minimize
- 79 -

Page 307 of 1910 ends

Show self -retaining
irrigation and runoff, to promote
surface infiltration where appropriate,
and to minimize the use of fertilizers
and pesticides that can contribute to
stormwater pollution.

Gardening" at
http://rcflood.org/stormwater/Error !
Hyperlink reference not valid.
landscape areas, if any.

Show stormwater treatment
and hydrograph modification
management BMPs. (See
instructions in Chapter 3, Step 5
and guidance in Chapter 5.)
A/ Where landscaped areas are used
I Provide IPM information to new owners,
to retain or detain stormwater, specify
plants that are tolerant of saturated
soil conditions.
lessees and operators.

Consider using pest -resistant
plants, especially adjacent to
hardscape.

To insure successful establishment,
select plants appropriate to site soils,
slopes, climate, sun, wind, rain, land
use, air movement, ecological
consistency, and plant interactions.
1 E. Pools, spas, ponds,
0 Show location of water
If the Co-Permittee requires pools
to be plumbed to the sanitary
a See applicable operational BMPs in
decorative fountains, and other
feature and a sanitary sewer
"Guidelines for Maintaining Your Swimming
water features.
cleanout in an accessible area
sewer, place a note on the plans
Pool, Jacuzzi and Garden Fountain" at
within 10 feet. (Exception:

Public pools must be plumbed
according to County
and state in the narrative that this
connection will be made according
to local requirements.
http://rcflood.org/stormwater/
Department of Environmental
Health Guidelines.)
A/ F. Food service
/1 For restaurants, grocery
►1 Describe the location and features
LI See the brochure, "The Food Service
stores, and other food service
of the designated cleaning area.

Industry Best Management Practices for:
operations, show location
Restaurants, Grocery Stores, Delicatessens and
Restaurant maybe proposed in
(indoors or in a covered
Bakeries" at
the proposed Commercial Areas
area outdoors) of a floor sink or
❑ Describe the items to be cleaned in
http://rcflood.org/stormwater/
(to be determined in final stage)
other area for cleaning floor
mats, containers, and
equipment.
this facility and how it has been sized
to insure that the largest items can be
accommodated.

Provide this brochure to new site owners,
lessees, and operators.
p
❑ On the drawing, show a
note that this drain will be
connected to a grease
- 80 -

Page 308 of 1910 ends

interceptor before discharging
to the sanitary sewer.

Restaurant maybe proposed in
the proposed Commercial
Areas (to be determined in
final stage)
Restaurant maybe proposed in the
proposed Commercial Areas (to be
determined in final stage)
Restaurant maybe proposed in the proposed
Commercial Areas (to be determined in final
stage)
G. Refuse areas
/1 Show where site refuse and
/1 State how site refuse will be
1 State how the following will be
recycled materials will be
handled and provide supporting
implemented:
handled and stored for pickup.
detail to what is shown on plans.

Provide adequate number of receptacles.

See local municipal
requirements for sizes
Inspect receptacles regularly; repair or replace
leaky
and other details of refuse
receptacles. Keep receptacles covered.
/1 State that signs will be posted on
areas.
or
near dumpsters with the words "Do
Prohibit/prevent dumping of liquid or
hazardous wastes. Post "no hazardous
/1 If dumpsters or other
not dump hazardous materials
here" or similar.
materials" signs. Inspect and pick up litter daily
and clean up spills immediately. Keep spill
control materials available on -site. See Fact
Sheet SC -34, "Waste Handling and Disposal" in
the CASQA Stormwater
Quality Handbooks at
www.cabmphandbooks.com
receptacles are outdoors, show
how the designated area will be
covered, graded, and paved to
prevent runon and show
locations of berms to prevent
runoff from the area.

L Any drains from dumpsters,
compactors, and tallow bin
areas shall be connected to a
grease removal device before
discharge to sanitary sewer.
❑ H.Industrial processes.
❑ Show process area.
❑ If industrial processes are to be
located on site, state: "AII process
activities to be performed indoors.
❑ See Fact Sheet SC -10, "Non-Stormwater
Discharges" in the CASQA Stormwater Quality
Handbooks at www.cabmphandbooks.com
No processes to drain to exterior or
to storm drain system."
See the brochure "Industrial & Commercial
Facilities Best Management Practices for:

Industrial, Commercial Facilities" at
http://rcflood.org/stormwater/
- 81 -

Page 309 of 1910 ends

❑ i. Outdoor storage of
❑ Show any outdoor storage
Include a detailed description of
❑ See the Fact Sheets SC -31, "Outdoor
equipment or materials. (See rows
areas, including how materials
materials to be stored, storage
Liquid Container Storage" and SC -33,
J and K for
will be covered. Show how
areas, and structural features to
"Outdoor Storage of Raw Materials "
source control measures for
areas will be graded and
prevent pollutants from entering
in the CASQA Stormwater Quality
vehicle
bermed to prevent runon or
storm drains.

Handbooks at
cleaning, repair, and
run-off from area.

Where appropriate, reference
www.cabmphandbooks.com
maintenance.)
❑ Storage of non -hazardous
liquids shall be covered by a
roof and/or drain to the
documentation of compliance with
the requirements of Hazardous
Materials Programs for:
sanitary sewer system, and be
contained by berms, dikes,
liners, or vaults.
0 Hazardous Waste Generation
El Hazardous Materials Release
Response and Inventory
❑ Storage of hazardous
materials and wastes must be
in compliance with the local
hazardous materials ordinance
and a Hazardous Materials
0 California Accidental Release
(CaIARP)
0 Aboveground Storage Tank
0 Uniform Fire Code Article 80
Section 103(b) & (c) 1991
Management Plan for the
site.
0 Underground Storage Tank
www.cchealth.org/groups/hazmat
/
❑ J. Vehicle and Equipment
❑ Show on drawings as
❑ If a car wash area is not provided,
Describe operational measures to
Cleaning
appropriate:
describe any measures taken to
implement the following (if applicable):
(1) Commercial/industrial
discourage on -site car washing and
❑ Washwater from vehicle and equipment
facilities having
vehicle/equipment cleaning
needs shall either provide a
covered, bermed area for
washing activities or discourage
vehicle/equipment washing by
removing hose bibs and
installing signs prohibiting such
uses.
(2) Multi -dwelling complexes
shall have a paved, bermed,
and covered car wash area
explain how these will be enforced.
washing operations shall not be discharged to
the storm drain system. Refer to "Outdoor
Cleaning Activities and Professional Mobile
Service Providers" for many of the Potential
Sources of Runoff Pollutants categories
below. Brochure can be found at
http://rcflood.org/stormwater
❑ Car dealerships and similar may rinse cars
with water only.
(unless car washing is
prohibited on -site and hoses
- 82 -

Page 310 of 1910 ends

are provided with an automatic
shutoff to discourage such use).
(3) Washing areas for cars,
vehicles, and equipment shall
be paved, designed to prevent
run-on to or runoff from the
area, and plumbed to drain to
the sanitary sewer.
(4) Commercial car wash
facilities shall be designed such
that no runoff from the facility
is
discharged to the storm drain
system. Wastewater from the
facility shall discharge to the
sanitary sewer, or a wastewater
reclamation system shall be
installed.
❑ K. Vehicle/Equipment Repair
❑ Accommodate all vehicle
❑ State that no vehicle repair or
In the Stormwater Control Plan, note
and
equipment repair and
maintenance will be done outdoors,
that all of the following restrictions
Maintenance
maintenance indoors. Or
or else describe the required
apply to use the site:
designate an outdoor
work area and design the area
features of the outdoor work area.
❑ No person shall dispose of, nor permit
to prevent run-on and runoff of
❑ State that there are no floor drains
the disposal, directly or indirectly of vehicle
stormwater.
or if there are floor drains, note the
agency from which an industrial
fluids, hazardous materials, or rinsewater from
parts cleaning into storm drains.
❑ Show secondary
waste discharge permit will be
❑ No vehicle fluid removal shall be performed
containment for exterior work
obtained and that the design meets
outside a building, nor on asphalt or ground
areas where motor oil, brake
fluid, gasoline, diesel fuel,
radiator fluid, acid -containing
batteries or other hazardous
that agency's requirements.
❑ State that there are no tanks,
containers or sinks to be used for
surfaces, whether inside or outside a building,
except in such a manner as to ensure that any
spilled fluid will be in an area of secondary
containment. Leaking vehicle fluids shall be
materials or hazardous wastes
parts cleaning or rinsing or, if there
contained or drained from the vehicle
are used or stored. Drains shall
are, note the agency from which an
immediately.
not be installed within the
secondary containment areas.
industrial waste discharge permit
will be obtained and that the
design meets that agency's
❑ No person shall leave unattended drip
- 83 -

Page 311 of 1910 ends

❑ Add a note on the plans that
states either (1) there are no
floor drains, or (2) floor drains
are connected to wastewater
pretreatment systems prior to
discharge to the sanitary
sewer and an industrial waste
discharge permit will be
obtained.
requirements.
parts or other open containers containing
vehicle fluid, unless such containers are in use
or in an area of secondary containment.

Refer to "Automotive Maintenance & Car Care
Best Management Practices for Auto Body
Shops, Auto Repair Shops, Car Dealerships, Gas
Stations and Fleet Service Operations".

Brochure can be
found at http://rcflood.org/stormwater/
Refer to Outdoor Cleaning Activities and
Professional Mobile Service Providers for many
of the Potential Sources of Runoff Pollutants
categories below. Brochure can be found at
http://rcflood.org/stormwater/
// L. Fuel Dispensing Areas
// Fueling areassshall have
// Move loaded and unloaded items indoors as
impermeable floors (i.e.,
Portland cement concrete or
soon as possible.
// See Fact Sheet SC -30, "Outdoor Loading and
Gas Station maybe proposed in
equivalent smooth impervious
Unloading," in the CASQA Stormwater Quality
the proposed Commercial Areas
(to be determined in final stage)
surface) that are: a) graded at
the minimum slope necessary
to prevent ponding; and b)
separated from the rest of the
site by a grade break that
prevents run-on of stormwater
to the maximum extent
practicable.

Handbooks at www.cabmphandbooks.com
Gas Station maybe proposed in the proposed
Commercial Areas (to be determined in final
stage)
Fueling areas shall be
covered by a canopy that
extends a minimum of ten feet
in each direction from each
pump. [Alternative: The fueling
area must be covered and the
cover's minimum dimensions
must be equal to or greater
than the area within the grade
break or fuel dispensing areal.]
- 84 -

Page 312 of 1910 ends

The canopy [or cover] shall not
drain onto the fueling area.

Gas Station maybe proposed in
the proposed Commercial
Areas (to be determined in
final stage)
M. Loading Docks
/1 Show a preliminary design
// Move loaded and unloaded items indoors as
for the loading dock area,
including roofing and drainage.
soon as possible.
// See Fact Sheet SC -30, "Outdoor Loading and
The Loading Docks maybe use in
Loading docks shall be covered
Unloading," in the CASQA Stormwater Quality
the proposed Commercial Areas
and/or graded to minimize run-
on to and runoff from the
Handbooks at www.cabmphandbooks.com
(to be determined in final stage)
loading area. Roof downspouts
shall be positioned to direct
The Loading Docks maybe use in the proposed
stormwater away from the
Commercial Areas (to be determined in final
loading area. Water from
loading dock areas shall be
drained to the sanitary sewer,
or diverted and collected for
ultimate discharge to the
sanitary sewer.
stage)
Loading dock areas draining
directly to the sanitary sewer
shall be equipped with a spill
control valve or equivalent
device, which shall be kept
closed during periods of
operation.

Provide a roof overhang
over the loading area or install
door skirts (cowling) at each
bay that enclose the end of the
trailer.

The Loading Docks maybe use
in the proposed Commercial
- 85 -

Page 313 of 1910 ends

Areas (to be determined in
final stage)
// N. Fire Sprinkler Test Water
11 Provide a means to drain fire
/1 See the note in Fact Sheet SC -41, "Building
sprinkler test water to the sanitary
sewer.
and Grounds Maintenance," in the CASQA
Stormwater Quality Handbooks at
www.cabmphandbooks.com
o. Miscellaneous Drain or Wash
Water or Other Sources
❑ Boiler drain lines
❑ Condensate drain lines
❑ Boiler drain lines shall be directly
or indirectly connected to the sanitary
sewer system and may not discharge
to the storm drain system.
❑ Condensate drain lines may
discharge to landscaped areas if the
flow is small enough that runoff
will not occur. Condensate drain
lines may not discharge to the
storm drain system.
// Drain to landscaping areas. See D2 for
landscape area maintenance.
►1 Rooftop equipment
❑ Drainage sumps
1/ Roofing, gutters, and trim.
❑ Other sources
11 Rooftop equipment with potential
to produce pollutants shall be roofed
and/or have secondary containment.
❑ Any drainage sumps on -site shall
feature a sediment sump to reduce
the quantity of sediment in pumped
water.

Avoid roofing, gutters, and trim
made of copper or other unprotected
metals that may leach into runoff.
❑ Include controls for other sources
as specified by local reviewer.

P. Plazas, sidewalks, and
Sweep plazas, sidewalks, and parking lots
parking lots.
regularly to prevent accumulation of litter and
debris. Collect debris from pressure washing to
prevent entry into the storm drain system.

Collect washwater containing any cleaning
agent or degreaser and discharge to the sanitary
sewer not to a storm drain.
- 86 -

Page 314 of 1910 ends

- 87 -

Page 315 of 1910 ends

Appendix 9: O&M
Operation and Maintenance Plan and Documentation of Finance, Maintenance and Recording Mechanisms - 88 -

Page 316 of 1910 ends

Appendix 10: Educational Materials
BMP Fact Sheets, Maintenance Guidelines and Other End -User BMP Information - 89 -

Page 317 of 1910 ends

F ollow thes e simple st eps to help reduce water
pollution:
01614061£ abed
H ouseh old Activities
• Do not rins e spills with water . Use dry cleanup
m ethods such as applying cat litter or another
absorb ent mat erial, sw eep and dispose of in
th e tr ash . Take it ems such as used or e xcess
batteries oven cl eaners, automotive fluids,
painting products and cathod e ray tubes, lik e
T Vs and comput er monitors, to a H ousehold
Ha r>ardous Waste Collection Center ( HHA CC).
■ For a HHWCC near you call (714) 834.61752 or
visit w ww,xlandfills s om ,
■ I)o not hose down you r driveway, sidewalk or
pa tio to the stree t, gutter or storm drain. Sweep
up debris and dispose of it in th e trash.

Automotive
■ lake your vehicle to a commercial ca r
wash whenever possible . If you wash your
ve hicle at home, choose soaps, cleaners, or
de te rge nts labeled non-toxic, phosphate- free
or biodegradable. Vege table and citrus -ba sed
produc ts are typ ica lly safest fo r the env iro nment. ■ Do not allow washwa ter from vehicle washing
to drain in to the street, gutter or storm drain.

Excess washwater should be disposed of in the
sa nitary sewer (through a sink or toilet) or onto
an abso rbent su rfa ce like your lawn.
■ Monitor your vehicles for lea ks an d lalace a pan
under le aks. Keep your ve hicle s well maintained
to stop and prevent leaks.
• Ne ver po ur oil or anlili wen' its ill(' Sit cc -I, gutter or storm drain.. Recys use subst:xocr s at It
service station, a waste oil collectio n center nr
used o il recycling center; For the nearest Used
Oil Collec tion Centex '- tll 1. , EU-CLEANUP or
visl4www,llfpib.le'an np.,
Pool Mainten ance
■ Po ol and spa w ater must be dechlorinat ed and free
of excess acid, alkali or c ol or to be allowed in the
street, gutter or storm drain.
■ When it is not raining, drain dechlo rinated pool and spa water di rectly into the
sa nit ary sewer.
■ S ome citi es m ay have ordi nanc es th at do not allow pool w at er to be dispos ed of in the storm drain.

Check with your city.

Landscape a nd Gardening
■ Dc n ot over -water. Water your l awn and g arden by
hand to control the amount of water you us e or set
irrigation systems to reflect seasonal water n eeds_
If water flows off your yard o nto your dri veway or
sid ewalk, yo ur system is o ver -wate ring. Periodi cally inspect and fi x leaks and misdirected sprinklers .
■ Do not rake or blow le aves, clippings or pruning
wast e into the stre et, g utte r or st orm drain . Inst ead, dispos e of waste by composting, hauling it to a
p ermitted landfill, or as green waste thr ough your
city's r ecycling progr am.
■ F ollow directions on p e,ii4i(ics; 11111 lt`111I11('1 (measur e, do notestiur;ate: um tiitlrxl: AD l+I,,mi t use if min is predicted within 48 hours.
■ Take unwanted pesticides to a 1-11 IW CC to be
recycled. For locations and hours of HI-IWCC, c all
(714) 834-6752 or visit www.oclandfills .c om.

Trash
• Pl ace trash and litter that c annot be r ecycled in
securely covered trash cans.
• Wh enev er possible, buy recycled produ cts.
■ Rem ember: Redu ce, R eus e, Re cy cle.

Pet Care
• Always pick up after your pet [h ush waste d own
the toil et or disp ose of it in the t rash . Pet waste, if left outdoor s, can w ash into the stre et, gutter
or storm chain
• If p ossible, bathe y our p ets indoors- If you must
bath e you r pet outsid e, w ash it on you r lawn or
anothe r absorbent/permeabl e su rface to k eep
the w ashwater from entering the street, glitter or
storm drai n.
■ Foll ow dir ections f or us e of pet c are products
and disp ose of any unus ed prod ucts at a
HHWC G
Common Pollutants
Ha nle ildaitttestcvtce
• Urn rge1Ns. rl+ Hurt s ailti snh runs
• On sill l abs p:u 111
•,Stc11111[1111g Ise ��1 rho-non.-als
• 01,1t, I ,ur tr;451I ::118(1 lit lC B"
lawn and Garden
• i't-I 3tul animal wast e
• I' r-m ides
• I .1, iimg , lea ves and soil
• L..iloc I.
lutomobii
•IUIa nd ae al e
• Eia[Is1 tr �o I mils mid [11)41.[NCIC
•( .leantu_ ;•Itrumic als
• Iitake pa, I dust.

0 L6 L 10 OZ£ abed
Did You Known ''?
■ Most people b eliev e dial the l argest source
of 1:11 11 ,llul1,ai in whin areas colli es Thma
spec ltir srr urres s uch 144 iactnnes anti sew age
Ii-ean nl•17i plants- In tart. the large st s,larce
I vr.d, r p,,,ILlu,ul ,owes li.an rile si eels.
nci hl,rrhn,His .,,,a1,1I111rl,+I151tes.rtt,Iparking
Ir' .. I his typ e of pt „lluu, In is sr i nlellnles
llr li 'non -p oi nt stulli, • p+11h111nn.
]> I Ilx•rr a re two types of u,ut-pn nl source
pollution: stnlmwater and urban runoff
III Illnti. rn.

M ISt, n 11n art,'I I nn , rII r,.•xltl'ts iii, ut rainfall. .

When rai nstorms cause large volumes
of icier i s rin se the u rban hrld .srape.
['ital.,: a opt I,,.Ilnt.,lris:d„u•. it it - O.

1..1 kill Ila 1, d1 , .tl] h.,' ,c -I1 ,1111- la11tu' „t i,11,'14 • S ;''.4t' ,' ,c 4114.] 1151' null
III Ij, ', .111•'II tl'111 , I, A1.15111r,A a.n ,l 1,Ihi'n 54,L01 4, iar,les crash. faun illppinvtsand
',t l„I urban po lluta nts into storm drain&
Where D oes it Go?
• tit i111n 1 55,' n,r 1o15uh II Mu t• s. tu' It, 1,•, :ul,l hus'intns cs — l .r 1nl+lul III. paint p1c,Ii, ides ,
fertilizers arid Ic;ln ers—c':SSI Is' bhrtc ll,wwashr a. l inn„ mu rio t .0 11. .

MA little still II 'lit a 1r ,:a titn ltlrs,. „I Dail a' ail :dine, send materials an.. sll,a in cha ins.
■ SIrll I❑{11th „141 , .rnlr.,11

51.15111.14.14 L, IJlll ll;-- < 41. a ,, ilt ,:n tll. tll 51'(51.1, (LP iu ui seeps „r Ir.di'Is), le. 11, I Ill ,I, t Itt 19tatri, Is ro d orr•at,' I lit"fet e e nti'l'lII,s'el111'tl":.,1 i't"l•:l„s.

Sources of Non -Point Source Pollution
• .A ut omotive le aks and spills.
■ Improp er dhpelsal of used oil a nd other engine
fluid
▪ M etals fo und in vehicle exhaust, w eather ed paint, inst. met al plating a nd Arcs
� I' rslulJr-s .11111 latsris, g arrle ns a nd
hums. r
� 'l11iprruprl dislxresl e,i rin:e nt'Is . h:nnl aril plait II'li 1, !,t '1 .15.

W I! v11 , I,1 ,1, 141 Li nd dust deli Is fl till lands( apt. and cravat action actisities.
� I.111,'1. tuen r!livings, animal wastr.:unl,,lhrr.

IllgillIt Il1. .IIlii
■ i)il ,t.silts on I,:11 king lots and paved sot fates.

The Effect on the Ocean
' '',:,n-piriosl source
11'1111111111 r:an ' .rave
a se, 1, ,IR 11111/111 I
on wale rp lalr n
to i (T1 :1 .111:1 ' ( .: m111%.
%.

P,'li n.t I sm !III the
Et J11'l] Ii;ti slitei n
;1•41 11:11 11 1 111111111' lift '
as writ ;Iv r,,:4a11 ;Ii111 ela.11.o141 t,.,7 ,1 t.1Iw. I hex 1:rlr also (t rgoniii' 1, ^, 1va11,,11 .11 ca n sII, IN .i, 1,1'al-Iat',, harhl,t:s at ill I LL!,
Slurinut+' al rl ,p1dill, 411.111 l.,;ollu'n1 11111g1;1111,, h:,v1• b een clrsrl,ryl ,l 1111,1n;•In,ul t}I: ulgn'(, n11nl) In i 'll11r;lrt°;Ili,l l 11 .rl ra ,�_ Illr pnlh5 lit pnnlre"1 walcl 11111th li, 17lr I II1'' ,1 11111„I 11 14 III,' ,h 1I 111111 1111 St'slt" I It, i nvl•sli4;;are lumping ;lid ttl,clrll:uil .4,1 III
dretn�-
ti,l I,I n,I111!lilt rI,;lul '-I.,.11111% It (le lo'111',.111,1 '11 5111, ',NI 1 ,a u,,',1c=,3 1,0 ulIpuI1 ri c tc,11411 4111.41111 .1111 11,1 11, r on9r:r n [1111111I frullnmIn. 'PI ,p11 list '. .11111 , hsp11 rsal rt Mils',Ill II, -1l, sn,1, 1.,,I11IIInI1 In 1'•1+- it 1 'c.,,.. hcs . litc .514•1111111 ,1111 .1151111, =:I!"L Iasi

0L-66 1° I. Z£ abed
Stormwater a nd the Construction Industry
Silt Fencing
Bad
G ood
Imyeu nu ll ma lmalo
• 1iJkx ac the h,ulnn,a
• .ni vel'.amen fete mainl,l
• theit •.,:... I r. eat Bann ..
.heck dun s
• NJle rinn n nu , l hlw+aH a round Wa rak lost
Protect Natural Features
Ml aimm duri ng Good
•
• Mimmne the emuam fdeapatd.al .
• Ill .ifs mod prowl odds . wham ode* rased.. salt at
+ttra,w,H ma be disturbed brcamera rym a aimv
• haat.meaam, a« unl I,elic«, w,hj ww dknalr. ad.eda,
,"her tea.. :Ian t� wstertwneen .uman a
or
lmmlaa do,* harki ng *me no
Construction Phasing
• feg ne mce mer nel l c, a CI Foe,. Ihar the n al n. Inn opined 4n Il umk rrl't
vrinlJ 0sl ne.
• 5thuduk er lImle k+adluk ,.muH aeaaa.
• ,_ ,lht5 •edm a, n:.mn n I rl v.., h4 at rate 6tadlne • Schedule nee wluan,a IE- -h era 4mMn p:nic
plht atspr IIemnliwdr II. -I hr and hat beta
Headed I.I w. roml commie
Vegetative Buffers
Good
F4,ans and woad wad er, r hulk, " alrp waw .hdica u1
drew m ad Sher tamnsu erroade'
wham buffers by awnry or rerlonlrox pm'MwIY a,
tamer (heir etlteeirmnr
Maintain your BMPs!
IN RIVERSIDE COUNTY .. ..Call 1-800-506-2555

TO REPORT ILLEGAL STOR MDRAIN DISPOSAL
Construction Entrances
Bad
E-mail: Fl ood .fcnpdes @co.riverside.ca us
Visit our website_ www.floodcontrol.co.riverside.ca.us Bro ught to you by th e St orm Water/Clean Water Pollution Protecti on Program..

REMEMBER, ONLY RAIN IN THE STOR MDRAIN!
Slopes
Good Sad
• Hwnnr+w 1 an d Jim, how. I, ,I,:..... u. T.A cn oii •rhuln hen. nha.mmr u rand t.a.I:..:
• Pro perly. re ttin HAW. .chide
• M ake Wrr the the wml.l U. IP, II nnlne,ha• m+ Foe.=
Iun N In •one
G oo d
• Smash grade de ten. stor m
• fl ea mP hmH darn w .rh sedn%rm bar man,m under
,4nn.,x d4161 smamwm n MAY , 1'n lm Mbar,.

Dirt Stockpiles
Goad
l"aa n « xrd all do a wmlllde
Site Stabilization
Go od
Storm Drain inlet Protection
Bad
Goad
• (he mit or lahe r appmpn nc tt®erl i fn tame the aw n, tech 0110 m fdtirOWL R uth sad ski..
• !take sum Ue mei are h arp+Mrlam ramurlr
I I a: Ix 'l aa Ia dym nal
• If ylla use add Slums maml aia ohm. tcFul!li.
www. epa.gov/npdes/menuofbmps

Landscaping ..
maintenance activities
can be •r co ntributors to
water pollutio n.
o ver -watering
arden chemicals become
art of t.runoff
that winds its way • •
gutters and storm
enteringdrains before
runoffrivers, streams, etc. Urban
po llution
. harms
aquatic life!
report
In Riverside County,
drain,into the stonn
1-800-506-2555
"Only Rain .I Drain"
Imp ortant Links:,
Household
Riverside County Hazard ous
Waste Collecti on Inform ation
5 or www.ri vcowni.org
Riverside County B acky ard
Composting Program
.it ..

Integrated Pest Management (IPM)Solutions
www.ipm.ucda vis.edu
Califo rnia Ma ster Gardener Programs
•.

California
w-ww.cnps.org
The Riverside County "Only R ain Down the Sto rm Drain" Pollution Prevention Program gratefully a ckno wledges
Ora nge Co unty's Storm Water Progra m for their
...Only Rain D own
...the Storm Drain
What you should know f or—
Lcmdscape and G ardening
Best Management tips for:
• Pr ofessi onals
• No vices
• Landscapers
•
Gar• deners

Tips for L andscape & Gardening
This brochure will help you to get the most
of you r lawn and gardening efforts and keep our
waterways clean. Clean waterways pro vide
recreation, establish thriving fish h abit ats, secure
safe sanctuaries for wildlife, and add beauty to
o ur co mmunities. NEVER allow gardening
products or waste water to enter the street,
gu tter or storm drain.

General Landsca ping Tips
•
CD
O
CO
•
Protect stockpiles and materials from wind
and rain by storing them u nder tarps or
secured plastic sheeting.

Prevent erosion of
slo pes by planting fast-
gro wing, dense grou nd
covering plants. These
will shield and bind the
soil.

Plant nativ e vegetation
to reduce the amount
of water, fertilizers and
pesticides applied to
the landscape.
• Never apply pesticides or fertilizers when rain
is predicted within the nex t 48 hours.

Ga rden & Lawn Maintena nce
• Do no t overwater. Use irrigation practices
such as drip irrigation, soaker hoses or micro -
spray systems. Periodically inspect and fix
leaks and misdirected sprinklers.
• Do n ot rake or blow leaves, clippings or
pruning waste int o the street, gutter or st orm
drain. Instead,
dispose of green
waste by com-
p osting, hauling
it to a per-
mitted landfill,
or recycling it
through your
city's pr ogram .
• Consider recycling y our green waste and
adding "nature's own fertilizer" to your lawn
or garden .
• Read labels and use only as directed. Do not
ov er -apply pesticides or fertilizers. Apply to
spots as needed, rather than blanketing an
entire area.
• Store pesticides, fertilizers and other
chemicals in a dry covered area to prevent
ex posu re that may result in the deteriorati on
of containers and packaging.
• Rinse empty pesticide containers and re - use
rinse wa ter as you wo uld use the prod uct.

Do not du mp rinse water down storm drains
or sewers. Dispose of empty containers in
the trash.
• When available, use non-tox ic altematives to
traditional pesticides, and use pesticides
specifically designed to control the pest you
are targeting.
• Try natural long-term common sense
s ol uti ons first. lnr r grar er P er Mann«ern enr
(1PM) can pr ovide landscaping g uidance and
solutions, such as:
• Physical Controls - Try hand picking,
barriers, traps or caulking holes to
control weeds and pests.
• Bi ological Controls - Use predatory
insects to control harmful pests .
• Chemical Controls - Check out
www .iprn.ucdavis.edu bef ore using
chemicals. Remember, all chemicals
should be used cauti ously and in
moderatio n.
• If fertilizer is spilled, sweep up the spill bef ore
irrigating . If the spill is liquid, apply an
absorbent material such as cat litter, and then
sweep it up and dispose of it in the trash.
• Take unwanted pesticides to a Ho useh old
Waste Collecti on Center to be recycled.
• Dumping taxies into the street, gutter or
storm drain is illegal!
www.hewaterwise .com (;refit water
conservatio n tips and drought toler ant
gard en designs.
wvw.ourwatero urworld .c om Learn him to
safely manage h ome and garden pests.

Additional information can also he fo und on
the hack of this brochure .

Helpful telephone numbers and links:

Riverside Cou nty Stormwater Protection Partners
Flood Control District (951) 955-1200
County- of Riverside
City of Banning
C ity of Bea umont
City of Caiimesa
City of Ca nyon Lake
Cathedra l City
City of Co achella
City of Co ro na
City of Desert H ot Springs
Cif) of Eastvale
City of Hemet
Cinv of Indian W ells
City of Indio
'City of Lake Elsinore
Miry of La Quinta
ny of Menifee
ity of Moreno V alley
ty of Murrrieni
-Sity of Norco
64 of Palm Desert
Zhry of Palm Springs
r�yty of Pe rris
Ltity of Rancho Mirage
(Pty of Riverside
City of San Jacin to
City of Temecula
City of Wildomar
(95L) 955-1000
(951) 922-3105
(95 I) 769-8520
(909) 795-9801
(951) 244-2955
(760) 770-0327
(760).398.4978
(951) 736.2447
(760) 329-6411
(951) 361-0900
(951) 765.2300
(760) 346-2489
(760) 391-4000
(951) 674-3124
(760) 777-7000
(951) 672-6777
(951) 413-3000
(951) 304-2489
(951) 270.5607
(760)346.0611
(760) 323-8299
(951) 943-6100
(760) 324-4511
(951)361-0900
(951) 654-7337
(951) 694-6444
(951) 677-7751

REPORT ILLEG AL STO RM D RAIN DISPO SAL
1-800-506-2555 or e-mail us at
fcnpdes(a%rcflood.org
• Rive rside Cou nty Flood Con tro l a nd Wa ter
Co nserv atio n District
www. rcflo od.org
O nline re so urces include:
• Californ ia Sto rm Water Quality A ssociation
www.casqa.or g
• State Water Resources Control Board
www.waterbo ards.c a.eov
Po wer Washers of North Ame rica
www. thepwna.o rg
What \ ulL should know for.. .

Outdoor Cleaning
Activities and
Professional Mobile
Service Providers
Storm drain pollution prevention
information for:
• (_' ar Washing R1 thilc I )ctailc rs
• \\'inJti\\ and l_arpu i ("le aner,
• l'tt\\t'r \Va, her.s
• \1 aterpruoter.:' Street Sweepers
• L LIL ipnu tit cleane r, tr ,Irgrca,ers
and all mohilc 'ter‘ ice provide rs
Do you know where stre et fl ows actually g o?
Stor m drains are NOT connected to sanitary so wer systems and treatment plants!
T

IN THE DRAI N
- j
he primary purp ose of st orm drains is to carry rain water away from developed areas to prevent flo oding . Pollutants discharged to st orm drains are transported directly int o rivers, lakes and streams . S oaps, degreasers, aut omoti ve fluids, litter and a h ost of materials are washed off buildings, sidewalks, plazas and parking areas. Vehicles and equipment must be pr operly m anaged to prevent the poll uti on of local waterways.

Unintenti onal spills by m obile service operat ors can flow int o storm drains and pollute our waterways. Avoid mishaps . Always have a Spill Response Kit on hand to clean up unintentional spills. Only emergency Mech ani cal repairs sh ould be done in City stre ets, using drip pans for spills. Plumbing should be done on private property . Always st ore chemicals in a leak -proof c ontainer and keep c overed when n ot in use. Window/Power Washing waste water sh ouldn't be released int o the streets, but sho uld be disposed of in a sanitary sewer, landscaped area or in the s oil. S oiled C arpet Cleaning wash water should be filtered bef ore being discharged into the s anitary sewer . Disp ose of all filter debris properly . Car Washingi Detailin` operat ors should wash cars on private property and use a reg ulated h ose n ozzle for water fl ow c ontr ol and runoff preventi on. Capture and dispose of waste water and chemicals pr operly .

Remember, st orm drains are f or re ceiving rain water run off only .

REPORT ILLEGAL

STORM DRAIN

DISPOSAL
1-000-506-2555

flelp Protect Our Waterways!
Use these guidelines for Outdoor Cleaning Activiti es anal Wash Wat er Dispos al Did
you kno w tha t disposing of
polluta nts into the street, gutter,
storm dra in or body of water is
PRO HIBI'1hll by la w and can result
in stiff penalties?
Best Management Practices
Waste wash water from Mechanics, Plu mbers,
Window/Power Washer, Carpet Clea ners, Car
Washin g and Mo bile Deta iling activities may
dintain significant qua ntities of mo tor oil, gre ase, enmica ls, dirt, dete rge nts, brake pad du st, litter
cad o ther materials.
idst Management Practices, or BMPs as they are
QTrown, arc guides to prevent pollu tants fro m
altering the storm drains. Each of us can do our
art to keep stormwater c lean by using the
G411ggested BMPs belo w:
0 Simple solutions fo r both
light and heav y duty jobs:

DO. ..con sider dry cleanin g methods first such
as a mop, bro om, rag or wire bru sh. Always keep
a spill response kit on site.

D O...prepa re the work area before po wer
clean ing by using sand bags, ribber mats, vacuu m
booms, co ntainmen t pads or tempora ry berms to
keep wash water away from the gutters and sto rm
drains.

DO.. .u se vacuu ms or other machines to
remo ve an d collect loo se debris or litter before
applying wa ter.

DO. ..obtain the property owner's permission to
disp ose of small amounts of power washing waste
water on to landscaped, gravel or unpaved
surfaces.

DO ...check your local sanitary sewer agency's
policies on wash water disposal regulations before
disposing of wash water i nto the sewer . (See list
on reverse side)
DO. ..be aware that if discharging to landscape
areas, soapy wash water may damage landscaping.

Residua l wash water may remain on pa ved
surfaces to evaporate. Sweep up s olid residuals
and dispo se of properly. Vac uum bo oms are
another option for ca pturing and collecti ng wash
water:

D O... check co see if loc al o rdinances pre vent
certain activitie s.

Do no t let. ..wash or waste water from
sidewalk, plaza or building cleaning go into a
street or sto rm drain.

Report illegal sto rm drain disposal
Call Toll Free
1-800-506-2555
Using Cleaning Agents
Try using biodegradable/phosphate-free products.

They are easier on the enviro nment, but don't
confuse them with being toxic free. Soapy water
entering the st orm drain system can impact the
delicate aq uatic en vir onment .

When cleaning s urfaces with a high-press ure
washer or steam cle aner, additi onal precautions
should be taken to pre vent the discharge of
pollutants into the storm drain ,system. These
two methods of surface cleaning can loosen
additional material that can contaminate l ocal
waterways.

T hink Water Conser vation
Minimize water use by using high pressure, low
vo lume nozzles. Be sure to che ck all hoses for
leaks. Water is a precio us resource, d on't let it flow freely an d be sure to shut it off in between uses.

Screening Wash Water
Conduct thor ough dry cleanup before washing
e xterior surfaces, such as buildings and decks
with loose paint, sidewalks or plaza areas. Keep
debris from entering the storm drain after
cleaning by first passing the wash water through
a "20 mesh" or finer screen to catch the solid
materials, then dispose of the mesh in -a refuse
co ntainer. Do n ot let the rem aining wash w ater
enter a street , gutter or stoml drain .

Drain Inlet Protection &
C ollecti on of Wash Water
• Prior to any washing, block all st orm drains
with an imperious b arrier s uch as sandbags
or berms, or seal the storm drain with pl ugs
or other appr opriate mat eri als.
• Create a containment area with berms and
traps or take advantage of a low sp ot to keep
wash water contained .
▪ Wash vehicles and equipment on grassy or
gravel areas so that the wash water can seep
into the gr ound.
• P ump or vacuum up all wash water in the
contained area.

Concrete/Coring/Saw Cutting
and Drilling Projects
Protect any d ow n -gradie nt inlets by using dry
acti vity techniques whenever p ossible_ if water is
used, minimize the amount of water used duri ng
the coring/drilling or saw cutting pr oc ess . Place a
barrier of sa ndbags and/ or abs orbent berms to
pr otect the st orm drain inlet or watercourse . Use a
sho vel or wet vacuum to rem ove the resid ue fr om
the pavement. Do not wash residue or partic ulate
matter into a st orm drain inlet or waterc ourse_

For Information:

Fo r more information on the Gener al Industri al
Storm Water Permit contact:

State Wate r Resources Control Board (SW RCB)
(916) 657-1146 or www.swrcb.ca.govl or, at your
Re gional Water Quality Control Board (RWQCB) .

Santa Ana Region (8)
California Tower
3737 Main Stre et, Ste. 500
Riverside, CA 92501-3339
(909) 782-4130
San Die go Region (9)
9771 Clairemont Mesa Blvd. , Ste. A
San Diego, CA 92124
(619) 467-2952
Crado Rive r Basin Region (7)
fi $3720 Fred Waring Dr. , Ste. 100
Pgm De sert, CA 92260
(MO) 346-7491
rn
o
SEI}L RESPONSE AG ENCY:
'r-ISa≥,Ji.nT: (909) 358-5055
Ii 4RC?oU5 WASTE DISPOSAL: (909) 358-6055
RECYCLING INFORMATION: 1 -800 -366 -SAVE
To REPORT ILLEGAL Diul'P NG OR A CLO GGED
STORM DRA IN: 1-800-506-2555
To order a dditional brochures or to obtain info rma tion on other pollution preven tio n a ctivities, call:
(909) 955-1111.
x
S tormWater

PROTECTION PROGRAM
Riverside County gratefully acknowle dges the State
Wate r Qua lity Co ntrol Board and the American Public
Works Associa tion, Sto rm Wa ter Quality Task Force fo r the information prov ide d in this brochure.

DID You KNOW . ..

YOUR FACILITY MAY

NEED A STO RM WATE R
PERMIT?
�run�
NI r sir rr
smoga■rr��r 000000
all urrurrrr
oasis is •irrrriuI:i "I IIl
all "AL
■lie�r iu.I. - -
Ollie a a t>i�
Many industr ia l fa cilitie s
a nd manufa cturin g ope rations
must obta in cove rage under the
Industria l A ctiv itie s Sto rm Wa te r
General Permit

FIND OUT

IF YO UR FACILITY

MUST OBTAIN A PERMIT
StormWater Pollution e . , What you should know
Riverside County has two drainage systems - s anitary sewers and storm drains.

The storm drain system is designed to help pr event floodi ng by carrying excess rainwat er away from streets. Since the storm drain system does not provide for water treatm ent, it also s erves the ,
unintended function of transporting i
✓i"��
pollutants directly to our waterways
Unlike sanitary sewers, storm
drains are not connected to a
treatment plant - they flow dir ectly
to our local streams, rivers a nd
lakes.

In recent years, awareness of the need
to protect water quality has increased .

As a result, f ederal, state, and l ocal
programs ha ve be en established to
reduce polluted st ormwat er discharges to
our waterways . The emphasis of these
programs is to prevent stormwater
pollution since it's much easier, and less
costly, than cleaning up "after the fact. "
National Pollutant Discharge Elimination System (NPDES) In 1987, the Fed eral Clean Water Act was amended to establish a fr amework for regulating industrial stormwater discharges under the NPDES permit program . In California, NPDES permits are issued by th e State Water Resources Control Board (SWRCB) and the nine (9) Regional Water Quality Control Boards (RWQCB). In general, certain industrial facilities and manufacturing operations must obtain coverage under the Industrial Activities Storm Water General Permit if the type of facilities or operations falls into one of the several categories described in this brochure.

Ho w Do I Know If I Need A Permit?
Following are general des criptions of th e
industry ca te gorie s types that are regulated by the
Industrial Activities Storm Water Ge neral Permit.

Contact your local Region Water Qu ality Contr ol
Bo ard to determine if your facility/operation
re quires coverage under the Permit.
♦ Fa cilities such as ceme nt manufacturing;
feedlots; fertilizer manufacturing; petrole um
refining; phosphate manufacturing; steam electric
powe r generation; coal mining; mine ra l mining
and proc essing; ore mining and dressing; and
asphatt emulsion;
Facilities classified as lumber an d wood
eructs (except woo d kitchen cabin ets); pulp,
...r.er, an d paperboard mills; chemical producers
(+" =pt some pharmaceutical and bio logical
pructs); petroleum and coal pro ducts; leather
p!uction and products; sto ne , clay and gla ss
pro ucts; primary metal industries; fabricated
stEktural metal; ship and boat building and
repairing;
CO
Active or inactive mining o perations and
oil and gas exploration, production, processing, or
treatment operations;
♦ Hazardo us waste treatment, storage, or
disposal fa cilities;
Landfills, land applicati on sites and op en
dumps that receiv e or hav e received any industri al
waste; unless there is a n ew ov erlying land use
such as a golf course, park, etc., and there is no
discharge associated with the landfill;
♦ Facilities i nvolv ed in the r ecycling of
mat erials, including metal scrap yards, battery
reclaimers, salvag e yards, and automobile
junkyards;
♦ Steam electric power generating facilities,
fac ilities that generate steam for electric p ower by
combustion;
♦ Tra nsportation faciliti es that ha ve v ehi cle
maintenance shops, fueling facilities, equipment
cle aning operations, or airport deicing op er ations .

This include s school bus maintenance faciliti es
operated by a schoo l district;
♦ Se wage treatment facilities;
♦ Facilities that have a reas whe re material
handling equipment or a ctivities, raw materials,
inte rme diate products, fina l produ cts, waste
materia ls, by-produc ts, or industrial machinery
are exposed to storm wa ter.

How do 9 obtain coverage under the
industrial Activities Storm Wa ter General Permit?
Obtain a permit applicatio n packa ge from your local Regio nal Wate r Quality Control Board listed on the ba ck of this brochure or the State Water Reso urces Control Board (SW RCB). Submit a completed Notice of Inte nt (NOI) form, site map and the a ppropriate fee ($250 or $500) to the SWRCB. Fa cilities must submit an NOI thirty (30) da ys prio r to beginning opera tion. Once you submit the NOI, the State Bo ard will send yo u a letter acknowledging receipt of yo ur NOI and will assign yo ur facility a waste discharge identification number (WDID No. ). You will a lso receive an annua l fee billing. These billings should roughly coincide with the date the State Boa rd processed your origina l NOI submittal.

What are the requirements of the
Ind ustrial Activitie s St orm Wat er General Permit?
The basic requirements of the Permit are:

1. Th e facility must eliminate any n on-st ormwater discharges or obtai n a separate permit for such discharges.

2. The facility must develop and implement a Storm Water Pollution Prevention Plan (SWPPP). The SWPPP must identify sources of pollutants that may be expos ed to stormwater. Once the sources of pollutants have b een identified, the facility operat or must develop and impl ement B est Management Practices (BMPs) to minimize or prevent polluted r unoff .

Guida nce in preparing a SWPPP is av ailabl e from a document prepared by th e California Storm Water Quality Task F orce call ed the Califor nia Storm Water B est M anagement Pr actice Handbook.

3. Th e facility must d evelop and implem ent a M onitoring Pr ogram that includes conducting visual observati ons and collecting s ampl es of the facility's storm wat er discharges associated with industrial acti vity . The General Permit r equir es that the analysis be conducted by a laborat ory that is certified by the State of California.

4. The facility must submit to the R egional Board, every July 1, an annual report that includes the results of its monitoring pr ogram .

A Non -St orm Water Dis charge I s_ any
discharge to a st orm drain sy stem that is not
c omposed entirely of storm water . Th e foll owing
non -st orm water discharges are authorized by the
Ge neral Permit: fire hydr ant flushing; potabl e
water s ourc es, including potable water relat ed to
the operation, mainte nance, or t esti ng of p otable
water systems; drinki ng fountain wat er;
atmo spheric condensat es includi ng refrigerati on,
air conditioning, and c ompress or condensate;
irrigatio n drainage; l andsc ape watering; spring s;
no n -co ntaminated gr ound water; foundati on or
footing dra inage; and sea water infiltratio n where
the sea waters are discharged back into the sea
waterso urce.

A BM is a technique, pr oces s, activity,
or structure used to reduce the pollutant co ntent of
a storm w ater di scharge. BMPs may include
simple, no n-structural methods such as g ood
ho usek eeping, staff training and preventive
mai nte nance . Additio nally, BM Ps m ay include
str uctural modificati ons such as the inst allation of berms, ca nopi es or treatment contra! (e.g. setting
basins, oil/watersepar ator s, etc.)
tralligaMillrr
WAR NING: There a re significant penaltie s for non-complia nce:._a minimum fine or $5 ..000 for failing to obtain p errnil cov erage, and, up to $10. 000 per day, ;,39r violati on ufus $10 per gallon of di sch arge in excess of 1,000 gallons .

STORM DRAIN

MARKERS
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the quality of their product is excellent.

We will use them again."
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MACTEC FEDERAL PROGRAMS MC -
If You Identify With Quality,
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Almetek's Markers last a lifetime and are cost effective Our attroctive 4" Disc, 3-D embossed,
metal, Starm Drain Morkers will last for
decades. They may even lost o lifetime.

These markers are so strong thot they ore
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The Perfect Marked
Almetek's metol markers hove been engi-
neered to perfection. They install eosily,
quickly and will remoin permonently in
place. Our patent pending sub -surface
mounting installotion with the turned down
edges will ensure ogoinst theft and snow
plow displocement. Our morkers con be
installed on the roadway, curb, storm drain
grate or heod. We ore so sure of this prod-
uct and its installotion process that we will
replace ony missing marker with o brond
new one, totolly FREE OF CHARGE.*
The Mee is Rlghtl
The price for stainless is less expensive
thon yau think. A plostic morker moy be
pennies less initiolly, but in the long term, it
will be more than three times expensive.

Look at the facts.

Plastic isn't as durable os stainless steel.

The estimoted life of a domed morker is
opproximotely 7 1/2 years and some cus-
tomers ore telling us thot the plastic mark-
ers ore failing after two years. During the
spon of 30 years, with a domed marker,
you may need to reploce it, at least, 4
times. The typical cost of a domed marker
of $1.95 and replacing 4 times, will cost
you, without inflotion and re-instollation
cost, $7.80. Our stainless steel marker
will only cost $2.39 (500 order) and no
replocement cost far 30 -years. The final
fact: yau will sove at least $5.40 per mork-
er with Almetek's Stoinless Steel Marker,
Life Cycle Cost Par Year Comparison
Typical
Nestle
Domed
Marker
$ 1.95
Almotoles
Stainless
Marker
$2.39
After 7 I n yeas. the markers
needed to he replaced. Beplacng 4
times over a period of 30 years will
I wet $r.roor.2d¢paryear
plus relnstdiatIon cost.
,Ap pros,
7 IfZ years
30 mum.

Marker will stay legible for 30 years
$ AN per year. no replacement cost %
Now you know the farts.

Go ahead and compare our Stone Drain
Marker's advantages.

Our Storm ,Drain Marker's Advantages
AI! metal, deep 3-D embossed
UV baked enamel paint,
l-2 colors option or natural
Virtually indestructible -
Heavy .0625" thick metal
9 different symbols
1O different legends
Deep -stamped, permanent
sequential numbering option or
stamp name of city or town
Easy--to-install,
2 adhesives,
2 different fasteners
install into new
or existing concrete
Parent pending sub -surface mounting.

See bark page for all Installation options.

Prismatic finish

RACK VIEW
Bark has main for beer adhesion.
' Provided ihal you hove purchased our fosiener, adhesive & sub -surface installoilon loo' and frrIlwed oil instagofion insirudions. •• Stainless & Brass- 30 -years, Aluminum and Anodised Aluminum, I5•yeors. Call for Almerek's MeI& Sin.... Drain Warranty Certificate.

Up to 30 -year warranty**
Attractive, high visibility
Theft -resistant with
turned down edges
(Patent Pending)
Snow plow proof
(with sub•xurfe a installation)
Lowest cost, .08(per year
with Stainless Steel
Square center hole
option for fastener
Custom designs available
install on either top or side of
drain, grate, curb or roadway,
in any weather

CUSTOM IMPRINT
Optional: Engrave your City or Town
or GPS location
M:7Et`-4%1Ab
❑t-PEll
'.IAUr.ipM. n!
��. = age 329 of 1910

Site Design & Landscape Planning SD -10
Design Objectives
IZJ Maximize Infiltration
Provide Retention
® Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
Description
Each project site possesses unique topographic, hydrologic, and vegetative features, some of which are more suitable for development than others. Integrating and incorporating appropriate landscape planning methodologies into the project design is the most effective action that can be done to minimize surface and groundwater contamination from stonnwater.

Approach
Landscape planning should couple consideration of land suitability for urban uses with consideration of community goals and projected growth. Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opportunities, and protect slopes and channels.

Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment.

Design Considerations
Design requirements for site design and landscapes planning should conform to applicable standards and specifications of agencies with jurisdiction and be consistent with applicable General Plan and Local Area Plan policies.
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SD -1a Site Design & Landscape Planning
Designing New Installations
Begin the development of a plan for the landscape unit with attention to the following general principles:
• Formulate the plan on the basis of clearly articulated community goals. Carefully identify conflicts and choices between retaining and protecting desired resources and community growth,
• Map and assess land suitability for urban uses. Include the following landscape features in the assessment: wooded land, open unwooded land, steep slopes, erosion -prone soils, foundation suitability, soil suitability for waste disposal, aquifers, aquifer recharge areas, wetlands, floodplains, surface waters, agricultural lands, and various categories of urban land use. When appropriate, the assessment can highlight outstanding local or regional resources that the community determines should be protected (e.g., a scenic area, recreational area, threatened species habitat, farmland, fish run). Mapping and assessment should recognize not only these resources but also additional areas needed for their sustenance.

Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opportunities, and protect slopes and channels.

Conserve Natural Areas during Landscape Panning
If applicable, the following items are required and must be implemented m the site layout during the subdivision design and approval process, consistent with applicable General Plan and Local Area Plan policies:
• Cluster development on least -sensitive portions of a site while leaving the remaining land in a natural undisturbed condition.
• Limit clearing and grading of native vegetation at a site to the minimum amount needed to build lots, allow access, and provide fire protection.
■ Maximize trees and other vegetation at each site by planting additional vegetation, clustering tree areas, and promoting the use of native and/or drought tolerant plants. • Promote natural vegetation by using parking lot islands and other landscaped areas. ■ Preserve riparian areas and wetlands.

Maximize Natural Water Storage and Infiltration Opportunities Itrithin the Landscape Unit ■ Promote the conservation of forest cover. Buildingon land that is already deforested affects basin hydrology to a lesser extent than converting forested land. Loss of forest cover reduces interception storage, detention in the organic forest floor layer, and water losses by evapotranspiration, resulting in large peak runoff increases and either their negative effects or the expense of countering them with structural solutions. • Maintain natural storage reservoirs and drainage corridors, including depressions, areas of permeable soils, swales, and intermittent streams. Develop and implement policies and 2 of 4 California Stormwater BMP Handbook
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Site Design & Landscape Planning SD -10
regulations to discourage the clearing, filling, and chanrelization of these features. Utilize them in drainage networks in preference to pipes, culverts, and engineered ditches. ■ Evaluating infiltration opportunities by referring to the stormwater management manual for the jurisdiction and pay particular attention to the selection criteria for avoiding groundwater contamination, poor soils, and hydrogeological conditions that cause these facilities to fail. If necessary, locate developments with large amounts of impervious surfaces or a potential to produce relatively contaminated runoff away from groundwater recharge areas.

Protection of Slopes and Channels during Landscape Design ■ Convey runoff safely from the tops of slopes.
■ Avoid disturbing steep or unstable slopes.
■ Avoid disturbing natural channels.
■ Stabilize disturbed slopes as quickly as possible.
■ Vegetate slopes with native or drought tolerant vegetation. ■ Control and treat flows in landscaping and/or other controls prior to reaching existing natural drainage systems.
■ Stabilize temporary and permanent channel crossings as quickly as possible, and ensure that increases in run-off velocity and frequency caused by the project do not erode the channel. s Install energy dissipaters, such as riprap, at the outlets of new storm drains, culverts, conduits, or channels that enter unlined clnaitnels in accordance with applicable specifications to minimize erosion. Energy dissipaters shall be installed in such a way as to minimize impacts to receiving waters.
■ Line on -site conveyance channels where appropriate, to reduce erosion caused by increased flow velocity due to increases in tributary impervious area. The first choice for linings should be grass or some other vegetative surface, since these materials not only reduce runoff velocities, but also provide water quality benefits from filtration and infiltration. If velocities in the channel are high enough to erode grass or other vegetative linings, riprap, concrete, soil cement, or geo-grid stabilization are other alternatives. ■ Consider other design principles that are comparable and equally effective.

Redeveloping Existing Installations
Various jurisdictional storniwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in ternis of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of " redevelopment" must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under "designing new installations" above should be followed.

January 2003
California Stormwater BMP Handbook
New Development and Redevelopment
www.cabmphandbooks.com
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SD -10 Site Design & Landscape Planning
Redevelopment may present significant opportunity to add features which had not previously been implemented. Examples include incorporation of depressions, areas of permeable soils, and swales in newly redeveloped areas. While some site constraints may exist due to the status of already existing infrastructure, opportunities should not be missed to maximize infiltration, slow runoff, reduce nuper vious areas, disconnect directly connected impervious areas.

Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SLUMP), Los Angeles County.

Department of Public Works, May 2OO2.

Stormwater Management Manual for Western Washington, Washington State Department of Ecology, August 2OO1.

Model Standard Urban Storer Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2OO2.

Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the incorporated Cities of Orange County, Draft February 2003.

Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2OO2.
4 of 4 California Stormwater BMP Handbook
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Rain Garden
Roof Runoff Controls SD -11
Design Objectives
® Maximize Infiltration
® Provide Retention
O Siow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Q Contain Pollutants
Collect and Convey
Description
Various roof runoff controls are available to address stormwater that drains off rooftops. The objective is to reduce the total volume and rate of runoff from individual lots, and retain the pollutants on site that may be picked up from roofing materials and atmospheric deposition. Roof runoff controls consist of directing the roof runoff away from paved areas and mitigating flow to the storm drain system through one of several general approaches: cisterns or rain barrels; dry wells or infiltration trenches; pop-up emitters, and foundation planting. The first three approaches require the roof runoff to be contained in a gutter and downspout system. Foundation planting provides a vegetated strip under the drip lure of the roof.

Approach
Design of individual lots for single-family homes as well as lots for higher density residential and commercial structures should consider site design provisions for containing and infiltrating roof runoff or directing roof runoff to vegetative wales or buffer areas. Retained water can be reused for watering gardens, lawns, and trees. Benefits to the environment include reduced demand for potable water used for irrigation, improved stormwater quality, increased groundwater recharge, decreased runoff volume and peak flows, and decreased flooding potential.

Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment.

Design Considerations
Designing New Installations
Cisterns or Rain Barrels
One method of addressing roof runoff is to direct roof downspouts to cisterns or rain barrels. A cistern is an above ground storage vessel with either a manually operated valve or a permanently open outlet. Roof runoff is temporarily stored and then released for irrigation or infiltration between storms. The number of rain 1 of 3
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SD --11 Roof Runoff Controls
barrels needed is a function of the rooftop area. Some low impact developers recommend that every house have at least 2 rain barrels, with a urinimunr storage capacity of i000 liters. Roof barrels serve several purposes including mitigating the first flush from the roof which has a high. volume, amount of contaminants, and thermal load. Several types of rain barrels are commercially available. Consideration must be given to selecting rain barrels that are vector proof and childproof. In addition, some barrels are designed with a bypass valve that filters out grit and other contaminants and routes overflow to a soak -away pit or rain garden.

If the cistern has an operable valve, the valve can be closed to store storm rater for irrigation or infiltration between storms. This system requires continual monitoring by the resident or grounds crews, but provides greater flexibility in water storage and metering. If a cistern is provided with an operable valve and water is stored inside for long periods, the cistern must be covered to prevent mosquitoes from breeding.

A cistern system with a permanently open outlet can also provide for metering stornrwater runoff. If the cistern outlet is significantly smaller than the size of the downspout inlet (say 1/4 to inch diameter), runoff will build up inside the cistern during storms, and will empty out slowly after peak intensities subside. This is a feasible way to mitigate the peak flow increases caused by rooftop impervious land coverage, especially for the frequent, small storms.

Dry wells and Infiltration Trenches
Roof downspouts can be directed to dry wells or infiltration trenches. A dry well is constructed by excavating a hole in the ground and filling it with an open graded aggregate, and allowing the water to fill the dry well and infiltrate after the storm event. An underground connection from the downspout conveys water into the dry well, allowing it to be stored in the voids. To minimize sedimentation from lateral soil movement, the sides and top of the stone storage matrix can be wrapped in a permeable filter fabric, though the bottom may remain open. A perforated observation pipe can be inserted vertically uito the dry well to allow for inspection and maintenance.

In practice, dry wells receiving runoff from single roof downspouts have been successful over long periods because they contain very little sediment. They must be sized according to the amount of rooftop runoff received, but are typically 4 to 5 feet square, and 2 to 3 feet deep, with a minimum of i-foot soil cover over the top (maximum depth of io feet).

To protect the foundation, dry wells must be set away from the building at least io feet. They must be installed in solids that accommodate infiltration. In poorly drained soils, dry wells have very limited feasibility.

Infiltration trenches function in a similar manner and would be particularly effective for larger roof areas. An infiltration trench is a long, narrow, rock -filled trench with no outlet that receives stonuwater runoff. These are described under Treatment Controls.

Pop-up Drainage Emitter
Roof downspouts can be directed to an underground pipe that daylights some distance from the building foundation, releasing the roof runoff through a pop-up emitter. Similar to a pop-up irrigation head, the emitter only opens when there is flow from the roof. The emitter remains flush to the ground during dry periods, for ease of lawn or landscape maintenance. 2 of 3 California Stormwater BMP Handbook
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Roof Runoff Controls SD -11
Foundation Planting
Landscape planting can be provided around the base to allow increased opportunities for stormvater infiltration and protect the soil from erosion caused by concentrated sheet flow coming off the roof. Foundation plantings can reduce the physical impact of water on the soil and provide a subsurface matrix of roots that encourage infiltration. These plantings must be sturdy enough to tolerate the heavy runoff sheet flows, and periodic soil saturation.

Redeveloping Existing Installations
Various jurisdictional storrwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of " redevelopment" must be consulted to determine whether or not the requirements for new development apply to areas intended for. redevelopment. If the definition applies, the steps outlined under "designing new installations" above should be followed.

Supplemental Information
Examples
• City of Ottawa's Water Links Surface -Water Quality Protection Program • City of Toronto Downspout Disconnection Program
• City of Boston, MA, Rain Barrel Demonstration Program Other Resources
Hager, Marty Catherine, Storrnwater, "Low -Impact Development", January/February 2003. ►r ww.storJuh2o.cokl
Law Impact Urban Design Tools, Low Impact Development Design Center, Beltsville, MD. www.lid-stonnwater.net
Start at the Source, Bay Area Stormwater Management Agencies Association, 1999 Edition January 2003
California Stormwater BMP Handbook
New Development and Redevelopment
www,c_abmphandbook.com
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Efficient Irrigation SD -12
Description
Irrigation water provided to landscaped areas may result in excess irrigation water being conveyed into stonnwater drainage systems.

Approach
Project plan designs for development and redevelopment should include application methods of irn ation water that minimize runoff of excess irrigation water into the stornuwwater conveyance system.

Design Objectives
0 Maximize Infiltration
CI Provide Retention
©' Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.)
Design Considerations
Designing New Installations
The following methods to reduce excessive irrigation runoff should be considered, and incorporated and implemented where determined applicable and feasible by the Permittee:
• Employ rain -triggered shutoff devices to prevent irrigation after precipitation. • Design irrigation systems to each landscape area's specific water requirements. ▪ Include design featuring flow reducers or shutoff valves triggered by a pressure drop to control water loss in the event of broken sprinkler heads or lines.
• Implement landscape plans consistent with County or City water conservation resolutions, which may include provision of water sensors, programmable irrigation times (for short cycles), etc.
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SD -12 Efficient Irrigation
• Design timing and application methods of irrigation water to minimize the runoff of excess irrigation water into the storm water drainage system.
• Group plants with similar water requirements in order to reduce excess irrigation runoff and promote surface filtration. Choose plants with low irrigation requirements (for example, native or drought tolerant species). Consider design features such as:
- Using mulches (such as wood chips or bar) in planter areas without ground cover to minimize sediment in runoff
- Installing appropriate plant materials for the location, in accordance with amount of sunlight and climate, and use native plant materials where possible and/or as recommended by the landscape architect
Leaving a vegetative barrier along the property boundary and interior watercourses, to act as a pollutant filter, where appropriate and feasible Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain growth
■ Employ other comparable, equally effective methods to reduce irrigation water runoff.

Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of" redevelopment" must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under "designing new installations„ above should be followed.

Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2OO2.

Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002.

Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.

Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
2 of 2 California Stormwater BMP Handbook
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January 2003

Storm Drain Signage SD -13
Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
Description
Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typically placed directly adjacent to storm drain inlets.

Approach
The stencil or .affixed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. Storm drain messages have become a popular method of alerting the public about the effects of and the prohibitions against waste disposal.

Suitable Applications
Stencils and signs alert the public to the destination of pollutants discharged to the storm drain.

Signs are appropriate in residential, commercial; and industrial areas, as well as any other area where contributions or dumping to storm drains is likely.

Design Considerations
Storm drain message markers or placards are recommended at all storm drain inlets within the boundary of a development project. The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site map.

Designing New Installations
The following methods should be considered for inclusion in the project design and show on project plans:
■ Provide stenciling or labeling of all storm drain inlets and catch basins, constructed or modified, within the project area with prohibitive language. Examples include "NO DUMPING 1 of 2
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SD -13 Storm Drain Signage
— DRAINS TO OCEAN" and/or other graphical icons to discourage illegal dumping. • Post signs with prohibitive language and/or graphical icons, which prohibit illegal dumping at public access points along channels and creeks within the project area.

Note - Some local agencies have approved specific signage and/or storm drain message placards for use. Consult local agency storniwater staff to determine specific requirements for placard types and methods of application.

Redeveloping Existing Installations
Various jurisdictional storrnwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. Tithe project meets the definition of "redevelopment", then the requirements stated under a designing new installations" above should be included in all project design plans.

Additional Information
Maintenance Considerations
• Legibility of markers and signs should be maintained. If required by the agency with jurisdiction over the project, the owner/operator or homeowner's association should enter into a maintenance agreement with the agency or record a deed restriction upon the property tide to maintain the legibility of placards or signs.

Placement
• Signage on top of curbs tends to weather and fade.
• Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms.

Supplemental Information
Examples
• Most MS4 programs have storm drain signage programs. Some MS4 programs will provide stencils, or arrange for volunteers to stencil storm drains as part of their outreach program.

Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2OO2.

Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities m San Diego County, February 14, 2002.

Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003.

Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.
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Non-Stormwater Discharges
SAC_ 10
I's (II et I flit'
L Uri' rirur si:hold ( \las '
TI:cirflrrr'rr/ Frleililll
Description
Non-stormwater discharges are those flows that do not consist entirely of stormwater. Some non-stormwater discharges do not include pollutants and may be discharged to the storm drain.

These include uncontaminated groundwater and natural springs.

There are also some non-stormwater discharges that typically do not contain pollutants and may be discharged to the storm drain with conditions. These include car washing, air conditioner condensate, etc. However there are certain non-stormwater discharges that pose environmental concern. These discharges may originate from illegal dumping or from internal floor drains, appliances, industrial processes, sinks, and toilets that are connected to the nearby storm drainage system. These
discharges (which may include: process waste waters, cooling waters, wash waters, and sanitary wastewater) can carry substances such as paint, oil, fuel and other automotive fluids, chemicals and other pollutants into storm drains. They can generally be detected through a combination of detection and elimination. The ultimate goal is to effectively eliminate non- stormwater discharges to the stormwater drainage system through implementation of measures to detect, correct, and enforce against illicit connections and illegal discharges of pollutants on streets and into the storm drain system and creeks.

Approach
Initially the industry must make an assessment of non-
stormwater discharges to determine which types must be
eliminated or addressed through BMPs. The focus of the
following approach is in the elimination of non-stormwater discharges.

Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
• Product Substitution
Targeted Constituents
•
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics

C A S QA
California
Stormwater
Quality
Association
J
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SC -10 Non-Stormwater Discharges
Pollution Prevention
• Ensure that used oil, used antifreeze, and hazardous chemical recycling programs are being implemented. Encourage litter control.

Suggested Protocols
Recommended Complaint Investigation Equipment
• Field Screening Analysis
pH paper or meter
Commercial stormwater pollutant screening kit that can detect for reactive phosphorus, nitrate nitrogen, ammonium nitrogen, specific conductance, and turbidity - Sample jars
Sample collection pole
A tool to remove access hole covers
• Laboratory Analysis
Sample cooler
Ice
Sample jars and labels
Chain of custody forms
Documentation
Camera
Notebook
Pens
Notice of Violation forms
Educational materials
General
• Develop clear protocols and lines of communication for effectively prohibiting non- stormwater discharges, especially those that are not classified as hazardous. These are often not responded to as effectively as they need to be.
• Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants.

Storm drain inlets should have messages such as "Dump No Waste Drains to Stream" stenciled or demarcated next to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system.
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Non-Stormwater Discharges SC -10
• See SC44 Stormwater Drainage System Maintenance for additional information.

Illicit Connections
• Locate discharges from the industrial storm drainage system to the municipal storm drain system through review of "as -built" piping schematics. • Isolate problem areas and plug illicit discharge points. • Locate and evaluate all discharges to the industrial storm drain system.

Visual Inspection and Inventory
• Inventory and inspect each discharge point during dry weather. • Keep in mind that drainage from a storm event can continue for a day or two following the end of a storm and groundwater may infiltrate the underground stormwater collection system. Also, non-stormwater discharges are often intermittent and may require periodic inspections.

Review Infield Piping
• A review of the "as -built" piping schematic is a way to determine if there are any connections to the stormwater collection system.
• Inspect the path of floor drains in older buildings.

Smoke Testing
• Smoke testing of wastewater and stormwater collection systems is used to detect connections between the two systems.
• During dry weather the stormwater collection system is filled with smoke and then traced to sources. The appearance of smoke at the base of a toilet indicates that there may be a connection between the sanitary and the stormwater system.

Dye Testing
• A dye test can be performed by simply releasing a dye into either your sanitary or process wastewater system and examining the discharge points from the stormwater collection system for discoloration.

TV Inspection of Drainage System
• TV Cameras can be employed to visually identify illicit connections to the industrial storm drainage system.

Illegal Dumping
• Regularly inspect and clean up hot spots and other storm drainage areas where illegal dumping and disposal occurs.
• On paved surfaces, clean up spills with as little water as possible. Use a rag for small spills, a damp mop for general cleanup, and absorbent material for larger spills. If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to a certified laundry (rags) or disposed of as hazardous waste.

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SC -1O Non-Stormwater Discharges
w Never hose down or bury dry material spills. Sweep up the material and dispose of properly. • Use adsorbent materials on small spills rather than hosing down the spill. Remove the adsorbent materials promptly and dispose of properly.
• For larger spills, a private spill cleanup company or Hazmat team may be necessary.

Once a site has been cleaned:
• Post "No Dumping" signs with a phone number for reporting dumping and disposal. • Landscaping and beautification efforts of hot spots may also discourage future dumping, as well as provide open space and increase property values. • Lighting or barriers may also be needed to discourage future dumping. ■ See fact sheet SCii Spill Prevention, Control, and Cleanup.

Inspection
• Regularly inspect and clean up hot spots and other storm drainage areas where illegal dumping and disposal occurs.
• Conduct field investigations of the industrial storm drain system for potential sources of non-stormwater discharges.
▪ Pro -actively conduct investigations of high priority areas. Based on historical data, prioritize specific geographic areas and/or incident type for pro -active investigations.

Reporting
• A database is useful for defining and tracking the magnitude and location of the problem. • Report prohibited non-stormwater discharges observed during the course of normal daily activities so they can be investigated, contained, and cleaned up or eliminated. • Document that non-stormwater discharges have been eliminated by recording tests performed, methods used, dates of testing, and any on -site drainage points observed. • Document and report annually the results of the program. • Maintain documentation of illicit connection and illegal dumping incidents, including significant conditionally exempt discharges that are not properly managed.

Training
• Training of technical staff in identifying and documenting illegal dumping incidents is required.
• Consider posting the quick reference table near storm drains to reinforce training. ■ Train employees to identify non-stormwater discharges and report discharges to the appropriate departments.
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Non-stormwater Discharges SC -10
• Educate employees about spill prevention and cleanup. • Well -trained employees can reduce human errors that lead to accidental releases or spills.

The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. Employees should be familiar with the Spill Prevention Control and Countermeasure Plan.
▪ Determine and implement appropriate outreach efforts to reduce non -permissible non- stormwater discharges.
• Conduct spill response drills annually (if no events occurred to evaluate your plan) in cooperation with other industries.
• When a responsible party is identified, educate the party on the impacts of his or her actions.

Spill Response and Prevention
• See SCu Spill Prevention Control and Cleanup.

Other Considerations
• Many facilities do not have accurate, up-to-date schematic drawings.

Requirements
Costs (including capital and operation & maintenance)
ww The primary cost is for staff time and depends on how aggressively a program is implemented.
• Cost for containment and disposal is borne by the discharger. • Illicit connections can be difficult to locate especially if there is groundwater infiltration. s Indoor floor drains may require re -plumbing if cross -connections to storm drains are detected.

Maintenance (including administrative and stung)
• Illegal dumping and illicit connection violations requires technical staff to detect and investigate them.

Supplemental Information
Further Detail of the BMP
Illegal Dumping
• Substances illegally dumped on streets and into the storm drain systems and creeks include paints, used oil and other automotive fluids, construction debris, chemicals, fresh concrete, leaves, grass clippings, and pet wastes. All of these wastes cause stormwater and receiving water quality problems as well as clog the storm drain system itself. • Establish a system for tracking incidents. The system should be designed to identify the following:
- Illegal dumping hot spots
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SC -10 Non-Stormwater Discharges
Types and quantities (in some cases) of wastes
- Patterns in time of occurrence (time of day/night, month, or year) Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles, direct dumping of materials, accidents/spills)
- Responsible parties
One of the keys to success of reducing or eliminating illegal dumping is increasing the number of people at the facility who are aware of the problem and who have the tools to at least identify the incident, if not correct it. Therefore, train field staff to recognize and report the incidents.

What constitutes a "non-stormwater" discharge?
• Non-stormwater discharges to the stormwater collection system may include any water used directly in the manufacturing process (process wastewater), air conditioning condensate and coolant, non -contact cooling water, cooling equipment condensate, outdoor secondary containment water, vehicle and equipment wash water, sink and drinking fountain wastewater, sanitary wastes, or other wastewaters.

Permit Requirements
• Facilities subject to stormwater permit requirements must include a certification that the stormwater collection system has been tested or evaluated for the presence of non- stormwater discharges. The State's General Industrial Stormwater Permit requires that non- stormwater discharges be eliminated prior to implementation of the facility's SWPPP.

Performance Evaluation
■ Review annually internal investigation results; assess whether goals were met and what changes or improvements are necessary.
• Obtain feedback from personnel assigned to respond to, or inspect for, illicit connections and illegal dumping incidents.

References and Resources
California's Nonpoint Source Program Plan http://www.swreb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual
http://wwvv.co.clark.wa.usipubworksibmpman.pdf
King County Storm Water Pollution Control Manual http://dnr,metroke.goviwir/dssispcm.htm spcm.htm
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www,scvuxnpt.org The Storm Water Managers Resource Center http://www.storinwatercenter.net/ 6 of 6 California Stormwater BMP Handbook
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Waste Handling & Disposal SC -34
Description
Improper storage and handling of solid wastes can allow toxic compounds, oils and greases, heavy metals, nutrients, suspended solids, and other pollutants to enter stormwater runoff. The discharge of pollutants to stormwater from waste handling and disposal can be prevented and reduced by tracking waste generation, storage, and disposal; reducing waste generation and disposal through source reduction, re -use, and recycling; and preventing ninon and runoff.

Approach
Pollution Prevention
• Reduction in the amount of waste generated can be
accomplished using the following source controls such as:

Production planting and sequencing
Process or equipment modification
Raw material substitution or elimination
- Loss prevention and housekeeping
Waste segregation and separation
Close loop recycling
■ Establish a material tracking system to increase awareness about material usage. This may reduce spills and minimize contamination, thus reducing the amount of waste produced. • Recycle materials whenever possible.

Objectives
• Cover
• Contain
• Educate
• Reduce'Minimize
• Product Substitution
Targeted Constituents
Secruneril
Nutnenls
Trash
Metals
Bacteria
Oil and Grease
Organics
Oxygen Oernanding
mmmmmmmm
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Suggested Protocols
General
• Cover storage containers with leak proof lids or some other means. If waste is not in containers, cover all waste piles (plastic tarps are acceptable coverage) and prevent storinwater ninon and runoff with a berm. The waste containers or piles must be covered except when in use.
■ Use drip pans or absorbent materials whenever grease containers are emptied by vacuum trucks or other means. Grease cannot be left on the ground. Collected grease must be properly disposed of as garbage.
• Check storage containers weekly for leaks and to ensure that lids are on tightly. Replace any that are leaking, corroded, or otherwise deteriorating. • Sweep and clean the storage area regularly. If it is paved, do not hose down the area to a storm drain.
• Dispose of rinse and wash water from cleaning waste containers into a sanitary, sewer if allowed by the local sewer authority. Do not discharge wash water to the street or storm drain.
• Transfer waste from damaged containers into safe containers. ■ Take special care when loading or unloading wastes to ninimi'e losses. Loading systems can be used to minimize spills and fugitive emission losses such as dust or mist. Vacuum transfer systems can minimize waste loss.

Controlling Litter
■ Post "No Littering" signs and enforce anti -litter laws. • Provide a sufficient number of litter receptacles for the facility. • Clean out and cover litter receptacles frequently to prevent spillage_ Waste Collection
■ Keep waste collection areas clean.
■ Inspect solid waste containers for structural damage or leaks regularly. Repair or replace damaged containers as necessary.
• Secure solid waste containers; containers must be closed tightly when not in use. • Place waste containers under cover if possible.
■ Do not fill waste containers with washout water or any other liquid. • Ensure that only appropriate solid wastes are added to the solid waste container. Certain wastes such as hazardous wastes, appliances, fluorescent lamps, pesticides, etc. may not be 2 of 5 California Stormwater BMP Handbook
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Waste Handling & Disposal SC -34
disposed of in solid waste containers (see chemical/ hazardous waste collection section below).
• Do not mix wastes; this can cause chemical reactions, make recycling impossible, and complicate disposal.

Good Housekeeping
• Use all of the product before disposing of the container. ■ Keep the waste management area clean at all times by sweeping and cleaning up spills immediately.
• Use dry nnethods when possible (e.g. sweeping, use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents, collect water and discharge through grease interceptor to the sewer. • Stencil storm drains on the facility's property with prohibitive message regarding waste disposal.

Chemical/Hazardous Wastes
• Select designated hazardous waste collection areas on -site. ■ Store hazardous materials and wastes in covered containers protected from vandalism, and in compliance with fire and hazardous waste codes.
•
Place hazardous waste containers in secondary containment. • Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas.

Runon/RunofPrevention
■ Prevent stormwater runon from entering the waste management area by enclosing the area or building a berm around the area.
• Prevent the waste materials from directly contacting rain. • Cover waste piles with temporary covering material such as reinforced tarpaulin, polyethylene, polyurethane, polypropyleneor hypalon.
■ Cover the area with a permanent roof if feasible.
• Cover dumpsters to prevent rain from washing waste out of holes or cracks in the bottom of the dumpster.
• Move the activity indoor after ensuring all safety concerns such as fire hazard and ventilation are addressed.

Inspection
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SC -34 Waste Handling & Disposal
• Inspect and replace faulty pumps or hoses regularly to ]minimize the potential of releases and spills.
• Check waste management areas for leaking containers or spills. • Repair leaking equipment including valves, lines, seals, or pumps promptly.

Training
• Train staff pollution prevention measures and proper disposal methods. ▪ Train employees and contractors proper spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill if one should occur_
• Train employees and subcontractors in proper hazardous waste management.

Spill Response and Prevention
• Refer to SC -ii Spill Prevention, Control & Cleanup.
• Keep your Spill Prevention Control and countermeasure (SPCC) plan up-to-date, and implement accordingly_
• Have spill cleanup materials readily available and in a known location. • Cleanup spills immediately and use dry methods if possible. • Properly dispose of spill cleanup material.
rw Vehicles transporting waste should have spill prevention equipment that can prevent spills during transport, The spill prevention equipment includes:
- Vehicles equipped with baffles for liquid waste
- Trucks with sealed gates and spill guards for solid waste Other Considerations
• Hazardous waste cannot be re -used or recycled; it must be disposed of by a licensed hazardous waste hauler_
Requirements
Costs
• Capital and operation and maintenance costs will vary substantially depending on the size of the facility and the types of waste handled. Costs should be low if there is an inventory program in place.

Maintenance
• None except for maintaining equipment for material tracking program. 4 of 5 California Stormwater BMP Handbook
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Supplemental Information
Further Detail of the BMP
Land Treatment System
■ Minimize the runoff of polluted stormwater from land application of municipal waste on -site by:

Choosing a site where slopes are under 6%, the soil is permeable, there is a low water table, it is located away from wetlands or marshes, there is a closed drainage system.

Avoiding application of waste to the site when it is raining or when the ground is saturated with water.

Growing vegetation on land disposal areas to stabilize soils and reduce the volume of surface water runoff from the site.
- Maintaining adequate barriers between the land application site and the receiving waters. Planted strips are particularly good.
- Using erosion control techniques such as mulching and matting, filter fences, straw bales, diversion terracing, and sediment basins.

Performing routine maintenance to ensure the erosion control or site stabilization measures are working.

References and Resources
King County Stormwater Pollution Control Manual - http://dnr.nnetrokc.gov/wlr/dssfspcnt.htm Orange County Stormwater Program
http://www.ocwatersheds.cone/StormWater/swp_introduction.asp Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Associations (BASMAA). On-line: http://www.basmaa.org
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Building & Grounds Maintenance SC -41
Description
Stormwater runoff from building and grounds maintenance activities can be contaminated with toxic hydrocarbons in solvents, fertilizers and pesticides, suspended solids, heavy metals, and abnormal pH. Utilizing the following protocols will prevent or reduce the discharge of pollutants to stormwater from building and grounds maintenance activities by washing and cleaning up with as little water as possible, following good landscape management practices, preventing and cleaning up spills immediately, keeping debris from entering the storm drains, and maintaining the stormwater collection system.

Approach
Pollution Prevention
• Switch to non-toxic chemicals for maintenance when
possible.
• Choose cleaning agents that can be recycled.
• Encourage proper lawn management and landscaping,
including use of native vegetation.
• Encourage use of Integrated Pest Management techniques for pest control_
▪ Encourage proper onsite recycling of yard trinuuings. • Recycle residual paints, solvents, lumber, and other material as much as possible.

Objectives
■ Cover
• Contain
• Educate
■ Reduce/Minimize
• Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Baetena
Oil and Grease
Organics
Oxygen Demanding

ISIMMISIIIIIIIMMI
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SC -41 Building 8t Grounds Maintenance
Suggested Protocols
Pressure Washing of Buildings, Rooftops, and Other Large Objects • In situations where soaps or detergents are used and the surrounding area is paved, pressure washers must use a waste water collection device that enables collection of wash water and associated solids. A sump pump, wet vacuum or similarly effective device must be used to collect the runoff and loose materials. The collected runoff and solids must be disposed of properly.
• If soaps or detergents are not used, and the surrounding area is paved, wash water runoff does not have to be collected but must be screened. Pressure washers must use filter fabric or some other type of screen on the ground and/or in he catch basin to trap the particles in wash water runoff.

If you are pressure washing on a grassed area (with or without soap), runoff must be dispersed as sheet flow as much as possible, rather than as a concentrated stream. The wash runoff must remain on the grass and not drain to pavement. Ensure that this practice does not kill grass.

Landscaping Activities
■ Do not apply any chemicals (insecticide, herbicide, or fertilizer) directly to surface waters, unless the application is approved and permitted by the state. ■ Dispose of grass clippings, leaves, sticks, or other collected vegetation as garbage, or by composting. Do not dispose of collected vegetation into waterways or storm drainage systems
• Use mulch or other erosion control measures on exposed soils. • Check irrigation schedules so pesticides will not be washed away and to minimize non- storniwater discharge.

Building Repair, Remodeling, and Construction
• Do not dump any toxic substance or liquid waste on the pavement, the ground, or toward a storm drain.
• Use ground or drop cloths underneath outdoor painting, scraping, and sandblasting work, and properly dispose of collected material daily.
■ Use a ground cloth or oversized tub for activities such as paint mixing and tool cleaning. • Clean paint brushes and tools covered with water -based paints in sinks connected to sanitary sewers or in portable containers that can be dumped into a sanitary sewer drain.

Brushes and tools covered with non -water -based paints, finishes, or other materials must be cleaned in a manner that enables collection of used solvents (e.g., paint thinner, turpentine, etc.) for recycling or proper disposal.
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Building & Grounds Maintenance SC -41
■ Use a storm drain cover, filter fabric, or similarly effective runoff control mechanism if dust, grit, wash water, or other pollutants may escape the work area and enter a catch basin. The containment device(s) must be in place at the begi.€niing of the work day, and accumulated dirty runoff and solids must be collected and disposed of before removing the containment device(s) at the end of the work day.
• Ifyou need to de -water an excavation site, you may need to filter the water before discharging to a catch basin or off -site. In which case you should direct the water through hay bales and filter fabric or use other sediment filters ortraps. • Store toxic material under cover with secondary containment during precipitation events and when not in use. A cover would include tarps or other temporary cover material.

Mowing, Trimming, and Planting
• Dispose of leaves, sticks, or other collected vegetation as garbage, by composting or at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems.
• Use mulch or other erosion control measures when soils are exposed. ■ Place temporarily stockpiled material away from watercourses and drain inlets, and berm or cover stockpiles to prevent material releases to the storm drain system. • Consider an alternative approach when bailing out muddy water; do not put it in the storm . " , pour over landscaped areas.
• Use hand or mechanical weeding where practical.

Fertilizer and Pesticide Management
• Follow all federal, state, and local laws and regulations governing the use, storage, and disposal of fertilizers and pesticides and training of applicators and pest control advisors. ■ Follow manufacturers' recommendations and label directions. Pesticides must never be applied if precipitation is occuring or predicted. Do not apply insecticides within too feet of surface waters such as lakes, ponds, wetlands, and streams. • Use less toxic pesticides that will do the job, whenever possible. Avoid use of copper -based pesticides if possible.
■ Do not use pesticides if rain is expected.
• Do not nux or prepare pesticides for application near storm drains. • Use the minimum amount needed for the job.
• Calibrate fertilizer distributors to avoid excessive application. • Employ techniques to minimize off -target application (e.g. spray drift) of pesticides, including consideration of alternative application techniques.

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SC -41 Building & Grounds Maintenance
• Apply pesticides only when wind speeds are low.
• Work fertilizers into the soil rather than dumping or broadcasting them onto the surface. • Irrigate slowly to prevent runoff and then orily as much as is needed.

Clean pavement and sidewalk if fertilizer is spilled on these surfaces before applying irrigation water.
• Dispose of empty pesticide containers according to the instructions on the container label. ■ Use up the pesticides. Rinse containers, and use rinse water as product. Dispose of unused pesticide as hazardous waste_
• Implement storage requirements for pesticide products with guidance from the local fire department and County Agricultural Commissioner. Provide secondary containment for pesticides.

Inspection
• Inspect irrigation system periodically to ensure that the right amount of water is being applied and that excessive runoff is not occurring. Minimize exeess watering, and repair leaks in the irrigation system as soon as they are observed.

Training
• Educate and train employees on use of pesticides and in pesticide application techniques to prevent pollution.
■ Train employees and contractors in proper techniques for spill containment and cleanup. • Be sure the frequency of training takes into account the complexity of the operations and the nature of the staff.

Spill Response and Prevention
■ Refer to SC -ii, Spill Prevention, Control & Cleanup
• Keep your Spill Prevention Control and countermeasure (SPCC) plan up-to-date, and implement accordingly.
• Have spill cleanup materials readily available and in a known location. • Cleanup spills immediately and use dry methods if possible. ▪ Properly dispose of spill cleanup material.

Other Considerations
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Building & Grounds Maintenance SC -41
Requirements
Costs
■ Overall costs should be low in comparison to other BM Ps_ Maintenance
■ Sweep paved areas regularly to collect loose particles, and wipe up spills with rags and other absorbent material immediately, do not hose down the area to a storm dram.

Supplemental Information
Further Detail of the BMP
Fire Sprinkler Line Flushing
Building fire sprinkler line flushing may be a source of non-stormwater runoff pollution. The water entering the system is usually potable water though in some areas it may be non -potable reclaimed wastewater. There are subsequent factors that may drastically reduce the quality of the water in such systems. Black iron pipe is usually used since it is cheaper than potable piping but it is subject to rusting and results in lower quality water. Initially the black iron pipe has an oil coating to protect it from rusting between manufacture and installation; this will contaminate the water from the first flush but not from subsequent flushes. Nitrates, poly- phosphates and other corrosion inhibitors, as well as fire suppressants and antifreeze may be added to the sprinkler water system_ Water generally remains in the sprinkler system a long time, typically a year, between flushes and may accumulate iron, manganese, lead, copper, nickel and zinc. The water generally becomes anoxic and contains living and dead bacteria and breakdown products from chlorination. This may result in a significant BOD problem and the water often smells. Consequently dispose fire sprinkler line flush water into the sanitary sewer.

Do not allow discharge to storm drain or infiltration due to potential high levels of pollutants in. fire sprinkler line water.

References and Resources
California's Nonpoint Source Program Plan http://www.swrcb_ca_gov/nps/index.html .

King County - ftp://dnr_metrokc.gov/wlr/dss/span/Chapter%2o3.PDF Orange County Stormwater Program
http://www.ocwatersheds.cone/StormWater/swp_introduction.asp Mobile Cleaners Pilot Program: Final Report. 1997. Bay Area Stormwater Management Agencies Association (BASSMA) http://www,basmaa.org/
Pollution from Surface Cleaning Folder. 1996_ Bay Area Stormwater Management Agencies Association (BASMAA) http// www.basmaa.org/
San Diego Stormwater Co-pernuttees Jurisdictional Urban Runoff Management Program (URMP) -
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Parking/Storage Area Maintenance SC -43
Description
Parking lots and storage areas can contribute a number of substances, such as trash, suspended solids, hydrocarbons, oil and grease, and heavy metals that can enter receiving waters through stormwater runoff or non-stormwater discharges. The following protocols are intended to prevent or reduce the discharge of pollutants from parking/storage areas and include using good housekeeping practices, following appropriate cleaning BMPs, and training employees.

Approach
Pollution Prevention
■ Encourage alternative designs and maintenance strategies for impervious parking lots. (See New Development and
Redevelopment BMP Handbook).
■ Keep accurate maintenance logs to evaluate BMP
implementation.

Suggested Protocols
General
■ Keep the parking and storage areas clean and orderly.

Remove debris in a timely fashion.
• Allow sheet runoff to flow into biofilters (vegetated strip and wale-) and/or infiltration devices.
■ Utilize sand filters or oleophilic collectors for oily waste in low concentrations.

Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
• Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Oxygen Demanding
®lEl®mEl®00
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SC -43 Parking/Storage Area Maintenance
• Arrange rooftop drains to prevent drainage directly onto paved surfaces. • Design lot to include semi -permeable hardscape.

Controlling Litter
• Post "No Littering" signs and enforce anti -litter laws. • Provide an adequate number of litter receptacles.
• Clean out and cover litter receptacles frequently to prevent spillage. • Provide trash receptacles in parking lots to discourage litter. a Routinely sweep, shovel and dispose of litter in the trash.

Surface cleaning
• Use dry cleaning methods (e.g. sweeping or vacuuming) to prevent the discharge of pollutants into the storunvater conveyance system.
• Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation.
• Sweep all parking lots at least once before the onset of the wet season. ▪ If water is used follow the procedures below:
- Block the storm drain or contain runoff.
- Wash water should be collected and pumped to the sanitary sewer or discharged to a pervious surface, do not allow wash water to enter storm drains.

Dispose of parking lot sweeping debris and dirt at a landfill.

When cleaning heavy oily deposits:

Use absorbent materials on oily spots prior to sweeping or washing. - Dispose of used absorbents appropriately.

Sur f rrce Repair
• Pre -heat, transfer or load hot bituminous material away from storm drain inlets. • Apply concrete, asphalt, and seal coat during dry weather to prevent contamination form contacting storm titer runoff..

Cover and seal nearby storm drain inlets (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc., where applicable. Leave covers in place until job is complete and until all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. 2 of 4 California Stormwater BMP Handbook
Municipal
www.cabmphandhooks.com
January 2003

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Parking/Storage Area Maintenance SC -43
■ Use only as much water as necessary for dust control, to avoid runoff. ■ Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of collected material and absorbents properly.

Inspection
• Have designated personnel conduct inspections of the parking facilities and storniwater conveyance systems associated with them on a regular basis. in Inspect cleaning equipment/sweepers for leaks on a regular basis.

Training
■ Provide regular training to field employees and/or contractors regarding cleaning of paved areas and proper operation of equipment.
• Train employees and contractors in proper techniques for spill containment and cleanup, Spill Response and Prevention
■ Refer to SC -ii, Spill Prevention, Control & Cleanup. • Keep your Spill Prevention Control and countermeasure (SPCC) plan up-to-date, nacl implement accordingly.
• Have spill cleanup materials readily available and in a known location. • Cleanup spills immediately and use dry methods if possible. • Properly dispose of spill cleanup material.

Other Considerations
• Limitations related to sweeping activities at large parking facilities may include high equipment costs, the need for sweeper operator training, and the inability of current sweeper technology to remove oil and grease.

Requirements
Costs
Cleaning/sweeping costs can be quite large, construction and maintenance of storniwater structural controls can be quite expensive as well.

Maintenance
• Sweep parking lot to minimize cleaning with water.
■ Clean out oil/water/sand separators regularly, especially after heavy storms. • Clean parking facilities on a regular basis to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions.

January 2003
California Stormwater BMP Handbook 3 of 4
Municipal
www.cabmphandbooks.com

Page 359 of 1910 ends

SC -43 Parking/Storage Area Maintenance
Supplemental Information
Further Detail of the BMP
Surface Repair
Apply concrete, asphalt, and seal coat during dry weather to prevent contamination form contacting stornnwater runoff. Where applicable, cover and seal nearby storm drain inlets (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and until all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal.

Use only as much water as necessary for dust control, to avoid runoff.

References and Resources
http://wmv.stormwatercenter.net/
California's Nonpoint Source Program Plan http:// w_swrcb.ca.gov/nns/index.html Model Urban Runoff Program: A How -To Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey, City of Santa Cruz, California Coastal Commission, Monterey Bay National Marine Sanctuary, Association of Monterey Bay Area Governments, Woodward -Clyde, Central Coast Regional WaterQuality control Board. July 1998 (Revised February 2OO2 by the California Coastal Commission).

Orange County Stonnwater Program
http://www.ocivatersheds_comiStonnWateriswp_introduction.asp Oregon Association of Clean Water Agencies. Oregon Municipal Storm water Toolbox for Maintenance Practices. June x998.

Pollution from Surface Cleaning Folder. 1996. Bay Area Stonnwater Management Agencies Association (BASMAA) http://www.ba.sma.org
San Diego Stornnwater Co-perniittees Jurisdictional Urban Runoff Management Program (URMP)
1ittp;J/wow.projectcleanwater.orelpclf/Mode1%2oProgra11n 2oMunicipal%2OFacilities.pdf 4 of 4 California Star mwater BMP Handbook
Municipal
www.cabmphandbooks.com
January 2003

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Description
Drainage System Maintenance SC -44
Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
As a consequence of its function, the stormwater conveyance Targeted Constituents system collects and transports urban runoff and stormwater that Sediment ✓ may contain certain pollutants. The protocols in this fact sheet Nutrients are intended to reduce pollutants reaching receiving waters Trash ✓ through proper conveyance system operation and maintenance. Metals Bacteria ✓
Oil and Grease
Pollution Prevention Organics
Maintain catch basins, stormwater inlets, and other stormwater conveyance structures on a regular basis to remove pollutants, reduce high pollutant concentrations during the first flush of storms, prevent clogging of the downstream conveyance system, restore catch basins' sediment trapping capacity, and ensure the system functions properly hydraulically to avoid flooding.

Approach
Suggested Protocols
Catch Basins/Inlet Structures
• Staff should regularly inspect facilities to ensure compliance with the following:
- Immediate repair of any deterioration threatening
structural integrity.

Cleaning before the sump is 40% full. Catch basins
should be cleaned as frequently as needed to meet this
standard.

Stenciling of catch basins and inlets (see SC34 Waste
Handling and Disposal).
cASCIA
California
iitli
Stormwater
ouallty
Association
January 2003
California Stormwater BMP Handbook 1 of 6
Industrial and Commercial
www.cabmphandbooks.com

Page 361 of 1910 ends

SC -44 Drainage System Maintenance
• Clean catch basins, storm drain inlets, and other conveyance structures before the wet season to remove sediments and debris accumulated during the summer. • Conduct inspections more frequently during the wet season for problem areas where sediment or trash accumulates more often. Clean and repair as needed. ■ Keep accurate logs of the number of catch basins cleaned. • Store wastes collected from cleaning activities of the drainage system in appropriate containers or temporary storage sites in a manner that prevents discharge to the storm drain.
• Dewater the wastes if necessary with outflow into the sanitary sewer if permitted. Water should be treated with an appropriate filtering device prior to discharge to the sanitary sewer. If discharge to the sanitary sewer is not allowed, water should be pumped or vacuumed to a tank and properly disposed. Do not dewater near a storm drain or stream.

Storm Drain Conveyance System
• Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps the pipe clear of excessive buildup.
• Collect and pump flushed effluent to the sanitary sewer for treatment whenever possible.

Pump Stations
• Clean all storm drain pump stations prior to the wet season to remove silt and trash. w Do not allow discharge to reach the storm drain system when cleaning a storm drain pump station or other facility.
• Conduct routine maintenance at each pump station.
• Inspect, clean, and repair as necessary all outlet structures prior to the wet season.

Open Channel
• Modify storm channel characteristics to improve channel hydraulics, increase pollutant removals, and enhance channel/creek aesthetic and habitat value. ■ Conduct channel modification/improvement in accordance with existing laws. Any person, government agency, or public utility proposing an activity that will change the natural (emphasis added) state of any river, stream, or lake in California, must enter into a Steam or Lake Alteration Agreement with the Department of Fish and Game. The developer -applicant should also contact local governments (city, county, special districts), other state agencies (SWRCB, RWQCB, Department of Forestry, Department of Water Resources), and Federal Corps of Engineers and USFWS.

Illicit Connections and Discharges
■ Look for evidence of illegal discharges or illicit connections during routine maintenance of conveyance system and drainage structures:
- Is there evidence of spills such as paints, discoloring, etc? 2 of 6 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com

Page 362 of 1910 ends

January 2003

Drainage System Maintenance SC -44
Are there any odors associated with the drainage system? Record locations of apparent illegal discharges/illicit connections? Track flows back to potential dischargers and conduct aboveground inspections. This can be done through visual inspection of upgradient manholes or alternate techniques including zinc chloride smoke testing, fluorometric dye testing, physical inspection testing, or television camera inspection.

Eliminate the discharge once the origin of flow is established. ▪ Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants.

Storm drain inlets should have messages such as "Dump No Waste Drains to Stream" stenciled next to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system.
• Refer to fact sheet SC -10 Non-Stormwater Discharges.

Illegal Dumping
• Inspect and clean up hot spots and other storm drainage areas regularly where illegal dumping and disposal occurs.
• Establish a system for tracking incidents. The system should be designed to identify the following:

Illegal dumping hot spots
Types and quantities (in some cases) of wastes
Patterns in time of occurrence (time of day/night, month, or year) Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles, direct dumping of materials, accidents/spills)
Responsible parties
• Post "No Dumping" signs in problem areas with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. • Refer to fact sheet SC -10 Non-Stormwater Discharges.

Training
• Train crews in proper maintenance activities, including record keeping and disposal. • Allow only properly trained individuals to handle hazardous materials/wastes. • Have staff involved in detection and removal of illicit connections trained in the following:

OSHA -required Health and Safety Training (29 CFR 1910.120) plus annual refresher training (as needed).

January 2003
California Stormwater BMP Handbook 3 of 6
Industrial and Commercial
www.cabmphandbooks.com

Page 363 of 1910 ends

SC -44 Drainage System Maintenance
- OSHA Confined Space Entry training (Cal -OSHA Confined Space, Title 8 and Federal OSHA 29 CFR 1910.146).
- Procedural training (field screening, sampling, smoke/dye testing, TV inspection).

Spill Response and Prevention
• Investigate all reports of spills, leaks, and/or illegal dumping promptly. ■ Clean up all spills and leaks using "dry" methods (with absorbent materials and/or rags) or dig up, remove, and properly dispose of contaminated soil. ■ Refer to fact sheet SC -n Spill Prevention, Control, and Cleanup.

Other Considerations (Limitations and Regulations)
• Clean-up activities may create a slight disturbance for local aquatic species. Access to items and material on private property may be limited. Trade-offs may exist between channel hydraulics and water quality/riparian habitat. If storm channels or basins are recognized as wetlands, many activities, including maintenance, may be subject to regulation and permitting.
• Storm drain flushing is most effective in small diameter pipes (36 -inch diameter pipe or less, depending on water supply and sediment collection capacity). Other considerations associated with storm drain flushing may include the availability of a water source, finding a downstream area to collect sediments, liquid/sediment disposal, and prohibition against disposal of flushed effluent to sanitary sewer in some areas. • Regulations may include adoption of substantial penalties for illegal dumping and disposal. ■ Local municipal codes may include sections prohibiting discharge of soil, debris, refuse, hazardous wastes, and other pollutants into the storm drain system.

Requirements
Costs
• An aggressive catch basin cleaning program could require a significant capital and O&M budget.
• The elimination of illegal dumping is dependent on the availability, convenience, and cost of alternative means of disposal. The primary cost is for staff time. Cost depends on how aggressively a program is implemented. Other cost considerations for an illegal dumping program include:
- Purchase and installation of signs.
- Rental of vehicle(s) to haul illegally -disposed items and material to landfills.

Rental of heavy equipment to remove larger items (e.g., car bodies) from channels. - Purchase of landfill space to dispose of illegally -dumped items and material. 4 of 6 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
January 2003

Page 364 of 1910 ends

Drainage System Maintenance SC -44
• Methods used for illicit connection detection (smoke testing, dye testing, visual inspection, and flow monitoring) can be costly and time-consuming. Site -specific factors, such as the level of impervious area, the density and ages of buildings, and type of land use will determine the level of investigation necessary.

Maintenance
▪ Two -person teams may be required to clean catch basins with vactor trucks. • Teams of at least two people plus administrative personnel are required to identify illicit discharges, depending on the complexity of the storm sewer system. • Arrangements must be made for proper disposal of collected wastes. • Technical staff are required to detect and investigate illegal dumping violations.

Supplemental Information
Further Detail of the BMP
Storm Drain Flushing
Flushing is a common maintenance activity used to improve pipe hydraulics and to remove pollutants in storm drainage systems. Flushing may be designed to hydraulically convey accumulated material to strategic locations, such as an open channel, another point where flushing will be initiated, or the sanitary sewer and the treatment facilities, thus preventing resuspension and overflow of a portion of the solids during storm events. Flushing prevents "plug flow" discharges of concentrated pollutant loadings and sediments. Deposits can hinder the designed conveyance capacity of the storm drain system and potentially cause backwater conditions in severe cases of clogging.

Storm drain flushing usually takes place along segments of pipe with grades that are too flat to maintain adequate velocity to keep particles in suspension. An upstream manhole is selected to place an inflatable device that temporarily plugs the pipe. Further upstream, water is pumped into the line to create a flushing wave. When the upstream reach of pipe is sufficiently full to cause a flushing wave, the inflated device is rapidly deflated with the assistance of a vacuum pump, thereby releasing the backed up water and resulting in the cleaning of the storm drain segment.

To further reduce impacts of stormwater pollution, a second inflatable device placed well downstream may be used to recollect the water after the force of the flushing wave has dissipated. A pump may then be used to transfer the water and accumulated material to the sanitary sewer for treatment. In some cases, an interceptor structure may be more practical or required to recollect the flushed waters.

It has been found that cleansing efficiency of periodic flush waves is dependent upon flush volume, flush discharge rate, sewer slope, sewer length, sewer flow rate, sewer diameter, and population density. As a rule of thumb, the length of line to be flushed should not exceed 700 feet. At this maximum recommended length, the percent removal efficiency ranges between 65- 75% for organics and 55-65% for dry weather grit/inorganic material. The percent removal efficiency drops rapidly beyond that. Water is commonly supplied by a water truck, but fire hydrants can also supply water. To make the best use of water, it is recommended that reclaimed water be used or that fire hydrant line flushing coincide with storm sewer flushing.

January 2003
California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
5of6

Page 365 of 1910 ends

SC -44 Drainage System Maintenance
References and Resources
California's Nonpoint Source Program Plan htp:// www.swrcb.ea.gov/nps/index.iitml Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworksibmpman.pdf
Ferguson, B.K. 1991. Urban Stream Reclamation, p. 324-322, Journal of Soil and Water Conservation.

King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998.

Santa Clara Valley Urban Runoff Pollution Prevention Programlittp:// www.scvmp.p.org pp,org
The Storm Water Managers Resource Center http://www.stormwatercenter.net United States Environmental Protection Agency (USEPA). 2OO2. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line:
hap:// www.epa.govinpdesimenuoftimps/poll 16.htm
6 of 6 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
January 2003

Page 366 of 1910 ends

BEAUMONT
-C A L I F O R N A -
Staff Report
TO: Honorable Mayor and Members of the City Council
FROM: Robert L. Vestal, City Engineer I Public Works Director BY: Hugo Escobedo, Senior Engineer
DATE: May 5, 2026
SUBJECT: Final Approval of Tract Map No. 38879
Description: Final approval of Tract Map No. 38879 and accept Security Agreement for survey monuments.

Background and Analysis:

As part of the development process to subdivide a parcel(s) in accordance with the Subdivision Map Act, a tentative map is reviewed and approved by the Planning Commission and City Council. During the review process, staff reviews conditions of approval provided by all City departments and prepares final conditions to be issued with the tentative map approval. Once a tentative map is approved by City Council and conditions have been satisfied, final approval by City Council is required to complete the subdivision process.

On June 17, 2025, City Council approved Tentative Tract Map No. 38879, subject to the completion of the conditions of approval. Tentative Tract No. 38879 proposes to subdivide 2.70 gross acres into 10 single family residential lots. Tentative Tract No. 38879 is located west of Pennsylvania Avenue and north of Eleventh Street. Refer to Figure 1 and Figure 2 for Vicinity Map and Tract Map Layout, respectively.

Page 367 of 1910 ends

NORTH
12TH
5—

RADKA AVE
I
Li
11TH
SITE
/7/ N CAErFORNCA

BEAU MONT
Li
8TH
ST

PEN NSYLVANIA
I

F FTI-I
I
5T
A
Asa
Figure 1 - Vicinity Map
ttr
(F2'
POR. LOT 3, ELK 161
NB 6/16-17 s.B. CO.

N 0200'0]- E 520.16' (520.22' R4)
dk\
-/
NORTH
S
—
AL
=j L13
1 1i
—LOT 'B'— 06646GE CHANNEL - 7802 S.F-
N 00'00'07' E 520.16 (0.175 ACRES)
_J
)
61 52.16'

50.00'

52.00'

52.00'
5200'

52.00'

51.00'

52.00'
5200'

52.00''
t
32 8
S
&
e
o
_
h
_
_
9 =
1 2
3 4
3 6 „
7 a;
B
9 '§
10 7953 5.7. -
8060 S.F
Is
8060 S.F.
6060 SI
s
8060 SS F s
0060 Si. c
8060 SF
n
8060 5.5
S
8060 S.F.
-
8060 S.F.

I
(Y E3./
2 500'
5200'
5200'

57.00'
500
2 2 500'
5200'
5200'
62:00'
I
/
(52
8 LOT A/ _ I I
(0503 ACRES)
I?
Figure 2 - Tract Map Layout
0,
520.17' (520_19' 61)(520' 03)(520.24' 04)
N 00'00'07 E 1120.34' (1120.39 R13(1120.40 68)(1120 CALE 1,13) -,-

PENNSYLVANIA AVENUE

Page 368 of 1910 ends

Per Beaumont Municipal Code 16.36.080, the City Engineer has certified that:
(A) He has examined the map.
(B)The land division as shown is substantially the same as it appeared on the tentative map and any approved alterations thereof.
(C)AII provisions of the Subdivision Map Act and all City ordinances applicable at the time of approval of the tentative map have been complied with. (D) He is satisfied that the map is technically correct. (E) In the City Surveyors certificate, the date of approval of the tentative map and the date of expiration is stated.

Subsequently, staff recommends the Final Map be approved pursuant to Section

16.36.090 of the Beaumont Municipal Code. However, if City Council determines that the division of land does not conform to all the requirements of the Subdivision Map Act, Development Agreement, and Beaumont Municipal Code applicable of the tentative map and any rulings made thereunder, may disapprove the map; provided, however, the final map shall not be disapproved due to technical or inadvertent errors which can easily be corrected, and in the opinion of the City Engineer, do not materially affect the validity of the map.

There are several public improvements required as part of the development of the Tract including storm drain, street, and sewer improvements. As of the date of this report, no improvements have been accepted. Therefore, in accordance with the Subdivision Map Act and Beaumont Municipal Code 16.56.010, the land divided shall enter into an agreement with the City to complete the improvements, and in connection therewith shall furnish the City improvement security in the amounts required by Section

16.56.040 of said Beaumont Municipal Code.

In addition to the public improvements, there are several survey monuments required to be set as part of this Tract. The Subdivision Map Act requires that at least one exterior boundary line of the land being subdivided be adequately monumented or referenced before the map is recorded. The land divider has certified that all exterior boundary lines are monumented. Furthermore, the Subdivision Map Act and Beaumont Municipal Code

16.36.100 state that interior monuments need not be set at the time the map is recorded if the engineer or surveyor certifies on the map that the monuments will be set on, or before, a specified later date, and if the land divider furnishes security guaranteeing the payment of the cost of setting such monuments.

The land divider has provided a subdivision improvement agreement and security in the form of a bond for the interior survey monuments. The agreement has been reviewed by staff and found to be consistent with the Beaumont Municipal Code.

Page 369 of 1910 ends

The land divider has previously provided security agreements and security in the form of bonds for all other public improvements. The following table is a summary of the improvements and corresponding bonds:

Table 1 - Tract Map No. 38879 Bond Summary
Bond
Number
Improvement
PW Project
Number
Plan
Number
Date of Acceptance
024291050
Streets
PW2025-0274
3542
April 7, 2026
024291051
Sewer
PW2025-0275
3540
April 7, 2026
Fiscal Impact:

The cost to prepare this staff report is estimated to be $700. All public improvements associated with the Tract Map will be completed at developer's expense.

The City is not liable for public improvement maintenance until the public improvements are accepted into the City's publicly maintained system.

Recommended Action:

Approve Tract Map No. 38879 as it is in substantial conformance with the approved tentative map;
Accept Security Agreement for survey monuments.

Attachments:

A. Final Tract Map No. 38879
B. PW2025-0261 - FTM 38879 Monumentation Agreement and Cash Bond (RCT- R01727629)

Page 370 of 1910 ends

I
SHEET 1 OF 3 SHEETS

IN THE CITY OF BEAUMONT, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA NUMBER OF LOTS: 10
NUMBER OF L_ ERED LOTS: 2
ACREAGE OF LOTS: 1.847 ACRES
ACREAGE OF LETTERED LOTS: (7929 S.F.) 0.182 ACRES
TOTAL ACREAGE: 2.030 ACRES

OWNER'S STATEMENT

WE HEREBY STATE THAT WE ARE THE OWNERS OF THE LAND INCLUDED WITHIN THE SUBDIVISION SHOWN HEREON; THAT WE ARE THE ONLY PERSONS WHOSE CONSENT IS NECESSARY TO PASS A CLEAR TITLE TO SAID SAND; THAT WE CONSENT TO THE MAKING AND RECORDING OF THIS SUBDIVISION MAP AS SHOWN WITHIN THE DISTINCTIVE BORDER LINE.

THE REAL PROPERTY DESCRIBED BELOW IS DEDICATED IN FEE FOR PUBLIC PURPOSES:

LOT 'A', FOR STREET AND PUBLIC UTILITY PURPOSES.

WE HEREBY RETAIN LOT 'B' IN FEE INDICATED AS "DRAINAGE CHANNEL" AS SHOWN HEREON

FOR PRIVATE USE, FOR THE SOLE BENEFIT OF OURSELVES, OUR SUCCESSORS, ASSIGNEES AND LOT OWNERS WITHIN THIS TRACT MAP, EXCEPT THEREFROM PRIOR RECORDED EASEMENTS.

THE REAL PROPERTY DESCRIBED BELOW IS DEDICATED AS AN EASEMENT FOR PUBLIC PURPOSES:

LOT 'B', FOR INGRESS AND EGRESS AND RIGHT TO INSPECT FOR WATER QUALITY PURPOSES.

OWNER: PENN ST DEVELOPMENT, LLC
BY:

DEAD "Cobs. MANAGER
DATE: /41arch P-3
, 20 �

NOTARY ACKNOWLEDGEMENT

A NOTARY PUBLIC OR OTHER OFFICER COMPLETING THIS CERTIFICATE VERIFIES ONLY

THE IDENTITY OF THE INDIVIDUAL WHO SIGNED THE DOCUMENT TO WHICH THIS

CERTIFICATE IS ATTACHED, AND NOT THE TRUTHFULNESS, ACCURACY, OR VALIDITY OF THAT DOCUMENT.

STATE OF CALIFORNIA _
COUNTY OF c 5 tt\t 2IZ ) SS
ON V Azzak'L2), 9 BEFORE ME, ✓ \ot,,A.Nvc..4k�`' , A NOTARY PUBLIC PERSONALLY APPEARED -. �1-
'INSERT NAME)

WHO PROVED TO ME ON THE BASIS OF SATISFACTORY EVIDENCE TO BE THE PERSON(S) WHOSE NAME(S)

IS/ARE SUBSCRIBED TO THE WITHIN INSTRUMENT AND ACKNOWLEDGED TO ME THAT HE/SHE/THEY

EXECUTED THE SAME IN HIS/HER/THEIR AUTHORIZED CAPACITY(IES), AND THAT BY HIS/HER/THEIR

SIGNATURE(S) ON THE INSTRUMENT THE PERSON(S), OR THE ENTITY UPON BEHALF OF WHICH THE PERSON(S) ACTED, EXECUTED THE INSTRUMENT.

I CERTIFY UNDER PENALTY OF PERJURY UNDER THE LAWS OF THE STATE OF CALIFORNIA THAT THE FOREGOING PARAGRAPH IS TRUE AND CORRECT.

WITNESS MY HAND.

SIGNATURE
PRINT NAME r ✓ 1
MY PRINCIPAL PLACE OF BUSINESS IS IN 02-
MY COMMISSION EXPIRES ON:

MY COMMISSION NUMBER IS:
` IA./1,01)J
COUNTY.

TRACT MAP No. 38879
BEING A SUBDIVISION OF A PORTION OF LOT 3 OF BLOCK 181 AS SHOWN BY AMENDED MAP OF THE TOWN OF BEAUMONT RECORDED IN BOOK 6, PAGES 16 AND 17 OF MAPS, RECORDS OF SAN BERNARDINO COUNTY AND PARCEL °'C" IN NOTICE OF LOT LINE ADJUSTMENT No. 03-LLA-1, RECORDED JANUARY 17, 2003, AS INSTRUMENT No. 2003-036756 OF OFFICIAL RECORDS OF RIVERSIDE COUNTY, CALIFORNIA, AND LOCATED IN SECTION 3, TOWNSHIP 3 SOUTH, RANGE 1 WEST.

BLAINE A. WOMER CIVIL ENGINEERING MAY, 2025

TAX COLLECTOR'S CERTIFICATE

I HEREBY CERTIFY THAT ACCORDING TO THE RECORDS OF THIS OFFICE, AS OF THIS DATE, THERE ARE

NO LIENS AGAINST THE PROPERTY SHOWN ON THE WITHIN MAP FOR UNPAID STATE, COUNTY, MUNICIPAL

OR LOCAL TAXES OR SPECIAL ASSESSMENIS COLLECTED AS TAXES, EXCEPT TAXES OR SPECIAL

ASSESSMENTS COLLECTED AS TAXES NOW A LIEN BUT NOT YET PAYABLE, WHICH ARE ESTIMATED TO BE $ 5,,, •00
DATE: iz , 20 240
MATTHEW JENNINGS;OUNTY OLLECTOR
BY:

TAX BOND CERTIFICATE
, DEPUTY
I HEREBY CERTIFY THAT A BOND IN THE SUM OF $ 5,e/o0.‘") HAS BEEN EXECUTED

AND FILED WITH THE BOARD OF SUPERVISORS OF THE COUNTY OF RIVERSIDE, CALIFORNIA, CONDITIONED

UPON THE PAYMENT OF ALL TAXES, STATE, COUNTY, MUNICIPAL OR LOCAL, AND ALL SPECIAL ASSESSMENTS

COLLECTED AS TAXES, WHICH AT THE TIME OF FILING OF THIS MAP WITH THE COUNTY RECORDER ARE A

LIEN AGAINST SAID PROPERTY BUT NOT YET PAYABLE AND SAID BOND HAS BEEN DULY APPROVED BY SAID BOARD OF SUPERVISORS.

M4ac( 25 , 20 2.0
( CAS OR SURETY BOND
"MA1 _ I _ HEW JENNINGS

COUNTY TAX CO TOR

SIGNATURE OMISSIONS
PURSUANT TO SECTION 66436 OF THE SUBDIVISION MAP ACT, THE SIGNATURES OF THE FOLLOWING OWNERS OF EASEMENTS AND/OR OTHER INTERESTS HAVE BEEN OMITTED:

1. AN EASEMENT FOR RIGHT-OF-WAY AND INCIDENTAL PURPOSES RECORDED MARCH 8, 1956 AS INSTRUMENT No. 17042 OF OFFICIAL RECORDS.

2. THE RIGHT TO LAY WATER PIPES IN AND ACROSS THE HEREIN DESCRIBED PROPERTY AND THE ABUTTING

STREETS AND ALLEYS, AS RESERVED TO THE BEAUMONT LAND AND WATER COMPANY, IT'S SUCCESSOR'S AND/OR ASSIGNS AND CANNOT BE LOCATED FROM RECORD.

CITY SURVEYOR'S STATEMENT
I HEREBY STATE THAT I HAVE EXAMINED THE WITHIN MAP OF TRACT 38879 CONSISTING OF (3) THREE SHEETS AND I AM SATISFIED THAT SAID MAP IS TECHNICALLY CORRECT.

DATE:
, 2026
41, et Ty.

JAY S. FAHRION, P.L.S. 8207

CITY SURVEYOR

RECORDER'S STATEMENT
FILED THIS DAY OF , 20
AT M. IN BOOK OF MAPS, AT PAGES
AT THE REQUEST OF THE CITY CLERK OF THE CITY OF BEAUMONT.

NO.

FEE

PETER ALDANA

ASSESSOR -COUNTY CLERK -RECORDER
BY: , DEPUTY
SUBDIVISION GUARANTEE: FIDELITY NATIONAL TITLE

SURVEYOR'S STATEMENT

THIS MAP WAS PREPARED BY ME OR UNDER MY DIRECTION AND IS BASED ON A FIELD SURVEY IN

CONFORMANCE WITH THE REQUIREMENTS OF THE SUBDIVISION MAP ACT AND LOCAL ORDINANCE AT THE REQUEST OF PENN ST DEVELOPMENT, LLC IN JANUARY, 2024. I HEREBY STATE THAT ALL MONUMENTS

ARE OF THE CHARACTER AND OCCUPY THE POSITIONS INDICATED, OR WILL BE IN ACCORDANCE WITH

THE TERMS OF THE MONUMENT AGREEMENT FOR THE MAP, AND THAT SAID MONUMENTS ARE/WILL BE

SET IN ACCORDANCE WITH THE TERMS OF THE MONUMENT AGREEMENT FOR THE MAP SUFFICIENT TO ENABLE THE SURVEY TO BE RETRACED. I HEREBY STATE THAT THIS TRACT MAP SUBSTANTIALLY CONFORMS TO THE APPROVED OR CONDITIONALLY APPROVED TENTATIVE MAP, IF ANY. THIS SURVEY IS TRUE AND COMPLETE AS SHOWN.

DATE: pI A RC )4 16 , 20 Cr •
SCOTT E. BRIMHALL LS. 7843
EXP: 12-31-26

CITY ENGINEER'S STATEMENT
I, ROBERT VESTAL, HEREBY STATE THAT I HAVE EXAMINED TRACT 38879, THAT THE SUBDIVISION AS

SHOWN IS SUBSTANTIALLY THE SAME AS IT APPEARED ON THE TENTATIVE MAP AND ANY APPROVED ALTERATIONS THEREOF, ALL APPLICABLE PROVISIONS OF THE SUBDIVISION MAP ACT AND OF TITLE 61 OF

THE CITY OF BEAUMONT MUNICIPAL CODE APPLICABLE AT THE TIME OF APPROVAL OF THE TENTATIVE MAP HAVE BEEN COMPLIED WITH.

DATED: A .PIZ L j'3 , 2026
G.�
/ROBERT VESTAL, CITY ENGINEER
RCE
Y 5 TIE,,,, A EI AT
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BEAUMONT CITY COUNCIL CERTIFICATE

THE CITY OF BEAUMONT, STATE OF CALIFORNIA, BY ITS CITY COUNCIL, HEREBY APPROVES THE TRACT MAP 38879 AND ACCEPTS THE OFFER OF DEDICATION MADE HEREON FOR PUBLIC ROAD AND PUBLIC UTILITY PURPOSES AND INGRESS AND EGRESS AND RIGHT TO INSPECT PURPOSES. THE CITY COUNCIL

DECLARES THAT THE ACCEPTANCE OF THE OFFER IS TO VEST TITLE IN THE CITY ON BEHALF OF THE

PUBLIC FOR SAID PURPOSES, BUT THAT SAID ROADS SUBJECT TO IMPROVEMENTS SHALL NOT BECOME PART OF THE CITY MAINTAINED SYSTEM UNTIL ACCEPTED BY THE CITY PURSUANT TO SECTION 941 OF THE STREETS AND HIGHWAYS CODE AS FOLLOWS;
LOT 'A', FOR STREET AND PUBLIC UTILITY PURPOSES IN FEE.

DATED: , 2026

CITY CLERK, CITY OF BEAUMONT

RIVERSIDE COUNTY, CALIFORNIA
SEC. 3, T.35., R.1 W., S.B.M.
r
•

Page 371 of 1910 ends

SHEET 2 OF 3 SHEETS

IN THE CITY OF BEAUMONT, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA 0'
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TRACT MAP No. 38879
BEING A SUBDIVISION OF A PORTION OF LOT 3 OF BLOCK 181 AS SHOWN BY AMENDED MAP OF THE TOWN OF BEAUMONT RECORDED IN BOOK 6. PAGES 16 AND 17 OF MAPS, RECORDS OF SAN BERNARDINO COUNTY AND PARCEL "C" IN NOTICE OF LOT LINE ADJUSTMENT No. 03-LLA-1, RECORDED JANUARY 17. 2003, AS INSTRUMENT No. 2003-036756 OF OFFICIAL RECORDS OF RIVERSIDE COUNTY, CALIFORNIA, AND LOCATED IN SECTION 3, TOWNSHIP 3 SOUTH, RANGE 1 WEST.

BLAINE A. WOMER CIVIL ENGINEERING MAY, 2025

BOUNDARY AND INDEX SHEET

MICHIGAN AVENUE
N 00'x0'10" W 1120.31' (1120.24' R1)(1120.22' R2)(1120' CALC R3) 384.95'(384.95' R1)(385' R3)
520.16' (520.12' R1)(520' R3)
LOT 4, BLK 181
MB 6/16-17 S.B. CO.

N 00'00'31" E 520.16'(520.16' R1)(520' R3)
LOT 3, BLK 181
MB 6/16-17 S.B. CO.

N 00'00'07" E 520.161520.22' R4)
---
L- 170.00 R4
TRACT
(SEE
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INST.

REC.

MAP No.

SHEET
PARCEL "C"
NO. O3-LLA-1
#2003-036756
1/17/2003,
I
38879
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03 520.16' (520.12' R1)(520' R3)
LOT 2, BLK 181
MB 6/16-17 S.B. CO.

RS 157/60-61
N 00'00'33" W 520.16'(520.16' R1)(520' R3)
cc
03 03
LOT 1, BLK 181
MB 6/16-17 S.B. CO.
520.17' (520.19' R1)(520' R3)
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00 384,99'(385.00' R
N 00'00'07" E 1120.34' (1120.39' R1)(1120.40' R2)(1120' CALC R3)

PENNSYLVANIA AVENUE

EASEMENT NOTE

A AN EASEMENT FOR RIGHT-OF-WAY AND INCIDENTAL PURPOSES RECORDED MARCH 8, 1956 AS INSTRUMENT No. 17042 OF OFFICIAL RECORDS. ,r'\ EASEMENT FOR INGRESS, EGRESS AND RIGHT TO INSPECT FOR WATER QUALITY PURPOSES DEDICATED HEREON.

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SURVEYOR'S NOTES
NORTH

1. THE BASIS OF BEARINGS FOR THIS MAP IS THE CENTERLINE OF ELEVENTH STREET TAKEN AS N 89'59'58" W PER RS 157/60-61.

2. THIS TRACT MAP HAS 10 LOTS AND LOTS 'A' AND 'B'.

3. THIS TRACT MAP CONTAINS 2.03 GROSS ACRES WITHIN THE DISTINCTIVE BORDER.

4. • INDICATES FOUND MONUMENT, AND NOTED IN MONUMENT NOTES.

5. 0 INDICATES SET 1 1/4" }.P. WITH BRASS TAG STAMPED "LS 7843", FLUSH.

6. SET 1" I.D. IRON PIPE, 18" LONG, TAGGED "LS 7843" FLUSH AT ALL REAR LOT CORNERS, ANGLE POINTS IN SIDE LOT LINES AND TRACT BOUNDARY.

7. SET LEAD & TAG "LS 7843" IN TOP OF CURB ON SIDE LOT LINES PROJECTED_

8. R1 N INDICATES RECORD DATA PER RS 157/60-61.

9. R2 '' INDICATES RECORD DATA PER PMB 226/5-6.

10. R3 N INDICATES RECORD DATA PER MB 6/16-17, S.B. CO. 1 1. R4 N INDICATES RECORD DATA PER LOT LINE ADJUSTMENT No. 03-LLA-1 RECORDED JANUARY 17, 2003 AS INSTRUMENT No. 2003-036756 OF OFFICIAL RECORDS OF RIVERSIDE COUNTY, CALIFORNIA.
0 MONUMENT NOTES

1. FOUND 1" I.P. TAGGED "LS 4343", DN. 3" IN PAVEMENT PER RS 157/60-61.

2. FOUND SPIKE AND WASHER STAMPED "LS 5411" FLUSH IN PAVEMENT PER CORNER RECORD No. 2024-1006, RECORDS OF RIVERSIDE COUNTY, CALIFORNIA.

3. FOUND SPIKE AND WASHER STAMPED "LS 7070" FLUSH IN PAVEMENT, NO REF.,

ACCEPTED AS THE CENTERLINE INTERSECTION OF PENNSYLVANIA AVENUE AND TWELFTH STREET PER.

4. FOUND 3/4" I.P. TAGGED "LS 4343", DN. 1" PER RS 157/60-61.

Page 372 of 1910 ends

NORTH
30' 60'
90'
1" = 30'

LINE DATA
LINE

BEARING

DISTANCE
Li
N 48°34'40" E 1

22.67'
L2
N 89'59'58" W

17.00'
L3
N 00°00'07" E

15.00'
NOTE: SEE SHEET 2 FOR BOUNDARY,

SURVEYOR'S NOTES, MONUMENT AND
EASEMENT NOTES.

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52.00'

IN THE CITY OF BEAUMONT, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA TRACT MAP No. 38879
BEING A SUBDIVISION OF A PORTION OF LOT 3 OF BLOCK 181 AS SHOWN BY AMENDED MAP OF THE TOWN OF BEAUMONT RECORDED IN BOOK 6, PAGES 16 AND 17 OF MAPS, RECORDS OF SAN BERNARDINO COUNTY AND PARCEL "C" IN NOTICE OF LOT LINE ADJUSTMENT No. 03-LLA-1. RECORDED JANUARY 17, 2003, AS INSTRUMENT No. 2003-036756 OF OFFICIAL RECORDS OF RIVERSIDE COUNTY. CALIFORNIA, AND LOCATED IN SECTION 3, TOWNSHIP 3 SOUTH, RANGE 1 WEST.

BLAINE A. WOMER CIVIL ENGINEERING MAY, 2025
P0R. LOT 3, BLK 181
MB 6/16-17 S.B. CO.

N 00'00'07" E 520.16' (520.22' R
}
LOT 'B' DRAINAGE CHANNEL - 7802 S.F.

N 00'00'07" E 520.16' (0.179 ACRES)

52.16 1
7958 S.F.

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4 8060 S.F.

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PENNSYLVANIA AVENUE

52.00'
8 8060 S.F.

52.00'
N 89'59'59" E

52.00'
9 8060 S.F.

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Page 373 of 1910 ends

RECORDING REQUESTED BY:

CITY CLERK
WHEN RECORDED RETURN TO:

City Clerk
City of Beaumont
550 E. 6th Street
Beaumont, CA 92223

SPACE ABOVE THIS LINE FOR RECORDER'S USE

CITY OF BEAUMONT

SUBDIVISION IMPROVEMENT AGREEMENT
TRACT or PARCEL MAP NO. 38879
DATE OF AGREEMENT: 03/04/2026
NAME OF SUBDIVIDER: Penn St Development LLC , a Limited Liability Company . (hereinafter referred to as "Subdivider").

NAME/NUMBER OF DEVELOPMENT:
10 residential
Baldwin Ranch
subdivision consisting of
, originally approved on
lots, TM2023-0012N2025-0024

6.17.25 , and Tentative Tract/Parcel 38879 ("Tract/Parcel" or "Tentative Tract/Parcel Map") , originally approved on: 6.17.25 .

FINAL TRACT/PARCEL MAP

RECORDED ON
38879 APPROVED ON 6.17.25

AS INSTRUMENT NUMBER
("Final Tract Map/Final Parcel Mai").

PROPERTY SUBJECT TO AGREEMENT: The real property which is the subject of this Agreement is located in the City of Beaumont, County of Riverside and is described in Exhibit "A" attached hereto and incorporated herein (hereinafter the "Property").

EST. TOTAL COST OF
PUBLIC IMPROVEMENTS:
$
EST. TOTAL COST OF
PRIVATE IMPROVEMENTS:
$
EST. TOTAL COST OF
MONUMENTATION:
$3,000.00
(see Exhibit "B")
(see Exhibit "B")
(see Exhibit "B")
BOND NUMBERS: Cash Bond CR01727629)
LETTER OF CREDIT NUMBERS:

FINANCIAL INSTITUTION:

Page 1 of 19 ends

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THIS SUBDIVISION IMPROVEMENT AGREEMENT ("Agreement") is made and entered into by and between the City of Beaumont, a California municipal corporation (hereinafter referred to as "City"), and Penn St Development LLC a Limited Liability Company (hereinafter referred to as "Subdivider"). City and Subdivider are sometimes referred to hereinafter individually as a "Party", and collectively as the "Parties".

RECITALS
A. Subdivider is the owner of certain real property located in the City of Beaumont legally described on Exhibit "A" attached hereto and incorporated and made part of this Agreement by this reference (the "Property").

B. The conditions of approval of the above referenced Tentative Tract Map and any related entitlements, which are hereby incorporated herein by this reference, require that prior to the issuance of building permits, the Subdivider and the City shall enter into a subdivision improvement agreement, secured with sufficient security, as a guarantee of the construction and completion of all public and private improvements and land development work required by said conditions of approval and by the City subdivision laws and codes.

D. In consideration of the approval of a final map by the City Council, Subdivider desires to enter into this Agreement, whereby Subdivider promises to install and complete, at Subdivider's own expense, all the public improvement work required by City in connection with the proposed subdivisoion. Subdivider has secured this Agreement by improvement security required by the Subdivision Laws.

E. Improvement Plans (the "Plans") for the construction, installation, and completion of the public and private improvements are being or have been prepared by Subdivider and will be subject to approval by the Director of Engineering/Public Works ("City Engineer"). The City has adopted standards (hereinafter "Standards") for the construction and installation of improvements within the City, and the Plans will be prepared in conformance with the Standards in effect on the date of the approval of the Application. The Plans will be on file in the Office of the City Engineer and are incorporated into this Agreement by this reference as if set forth fully herein. All references in this Agreement to the Plans shall be deemed to include reference to any specifications for all of the improvements as approved by the City Engineer.

F. An estimate of the cost for construction of the public and private improvements and performing the land development work according to the Plans has been made and approved by the City Engineer. The estimated cost of these improvements is set forth on Page One (1) of this Agreement, and the basis for the estimate is attached hereto as Exhibit "B" and incorporated and made part of this Agreement by this reference. The amounts of the Improvement Securities required to be posted with this Agreement are also based upon the estimate in Exhibit "B".

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G. For the purposes of this Agreement, the term "Public Improvements" means all those improvements within the Tract/Parcel intended for transfer or conveyance to the City or other public agency. The estimated cost of their construction is included in the above estimate included herein as Exhibit "B".

NOW, THEREFORE, in consideration of the issuance of the Final Tract map, Subdivider and City hereby agree as follows:

1. Subdivider's Obligation to Construct Improvements.
(a) In constructing and installing the improvements, Subdivider shall comply with all of the requirements and conditions of approval of in the Tentative Tract Map, related entitlements as well as the provisions of the Municipal Code and Subdivision Laws. (b) Subdivider shall complete, at its own expense, all the public and private improvements and related work on the Development, as required by the conditions of approval of the Tentative Map and related entitlements in conformance with the approved Plans and City Standards, including without limitation, those improvements set forth in Exhibit "B" (hereinafter collectively the "Improvements") within twenty-four (24) months of the date of this Agreement, unless a time extension is granted by the City as authorized by Section 20 of this Agreement.
(c) Notwithstanding the time limits specified in Section 1(b) above, no single family dwelling unit or group of units shall be given final inspection and clearance for occupancy by City unless the private and public streets providing access to and fronting such units are completed, the final lifts of pavement on the streets are in place, and all wet and dry utility services (e.g. sewer, water, electrical power, telephone, gas, etc.) to such units are in place and are operational.
(d) Subdivider shall furnish the necessary materials for completion of the Improvements in conformity with the Plans and City Standards.
(e) Subdivider shall acquire and dedicate, or pay the cost of acquisition by the City, of all rights -of -way, easements and other interests in real property required for construction or installation of the Improvements, free and clear of all liens and encumbrances.

Subdivider's obligations relating to acquisition by City of off -site rights -of -way, easements and other interests in real property shall be subject to a separate agreement between Subdivider and City. Subdivider shall also be responsible for obtaining any public or private drainage easements or authorizations therefor to accommodate the Development. (f) Subdivider shall furnish and install all monuments, stakes and property corners on the lots and streets in the Property as specified on the final recorded tract maps for the Development in accordance with the provisions of the Subdivision Laws, and shall submit centerline tie sheets to City, within thirty (30) days after completion of the Improvements, or as specified in any separate monument agreement with the City, but in any event prior to their acceptance by the City.

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2. Improvement Securities.
(a) Subdivider agrees to secure this Agreement with good and sufficient improvement securities in a form approved by the City Attorney (referred collectively hereinafter as "Improvement Securities" and individually as "Improvement Security") to guarantee the construction and completion of all the improvements in the Development. All such improvement securities shall be posted with the City prior to the City's final building inspection and issuance of a Certificate of Occupancy for any single family dwelling constructed by Subdivider, its agents, assigns or contractors, on any lot within the Development, as described in Exhibit "A". Said securities are estimated at this time in Exhibit "B" to be in the following amounts, and shall be for the purposes described as follows:
(i) and 00/100 DOLLARS ($XXX,XXX.XX) to ensure
faithful performance of the construction and installation of the public and private Improvements required by this Agreement ("Performance Security"), which amount is 100% of the estimated cost of the Improvements as set forth in Exhibit "B"; and (ii) and 00/100 DOLLARS ($)OX,XXX.XX) to
secure payment to any contractor, subcontractor, persons renting equipment or furnishing labor materials for the Improvements required to be constructed or installed pursuant to this Agreement ("Labor & Materials Security"), which amount is one -hundred percent (100%) of the estimated cost of the Improvements; and (iii) and 00/100 DOLLARS ($ XX,X)OX.XX) in the form
of a Warranty Bond or cash deposit with the City to guarantee or warranty the Improvement work done pursuant to this Agreement for a period of one (1) year following acceptance/certification thereof by City, against any defective work or labor done or defective materials furnished ("Warranty Security"). The Warranty Security is 10% of the estimated cost of the Performance Security amount described above, and such Warranty Security must be provided by Subdivider to City prior to the City's release of any bonds or Improvement Securities filed with this Agreement. (iv)Three thousand and 00/100 Dollars ($3,000.00) in the form of a cash deposit, which is 100% of the estimated cost of setting all final subdivision monuments, boundary corners, front and rear lot corners and centerline ties not previously set or submitted on the lots and streets within the Property as described in Exhibit "A", and for the preparation and recordation of any related Certificate of Correction, as required by Section 66469 of the State Subdivision Map Act. (b) The Improvement Securities required by this Agreement shall be kept on file with the City Clerk. If surety bonds are used, they must be issued by a surety company currently admitted to transact surety insurance business in California by the California Department of Insurance, with a Best's Insurance Guide rating of no less than A-. The terms of any documents evidencing such Improvement Securities as set forth in this Section 2 or

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referenced on Page One (1) of this Agreement, are incorporated into this Agreement by this reference as if set forth fully herein. If any Improvement Security is replaced by another type or kind of approved Improvement Security, subject to the approval of the form thereof by the City Attorney, the replacement shall be filed with City Clerk and, upon filing, shall be deemed to have been made a part of and incorporated into this Agreement. Upon filing of a satisfactory replacement Improvement Security with the City Clerk, the former Improvement Security shall be released.
(c) Subdivider agrees to keep its Improvement Securities in full force and effect until they are reduced or released by City. If any Improvement Security provided by Subdivider is cancelled or terminated for any reason by the action of a surety, financial institution or other party, it shall be the responsibility of the Subdivider to immediately, upon written notice from City, provide a substitute Improvement Security which conforms to all the requirements of this Section 2 in the same amount or amounts. (d) Any additions, changes, alterations, or modifications of this Agreement or to the Plans, Specifications and Improvements referred to herein, including any extension of time within which the work hereunder may be completed, shall not release or exonerate any surety or sureties on the Improvement Security given in connection with this Agreement.

3. Alterations to Improvement Plans; Modification of City Standards. (a) Any changes, alterations or additions to the Plans or to the Improvements, not exceeding 10% of the original estimated cost of the Improvements, which are mutually agreed upon by City and Subdivider, shall not require Subdivider to increase any Improvement Securities provided under this Agreement. In the event such changes, alterations, or additions exceed 10% of the original estimated cost of the Improvements, Subdivider shall provide additional Performance Security as required by Section 2 of this Agreement for 100% of the total estimated cost of the Improvements as changed, altered, or amended, minus any completed partial releases allowed by Section 7 of this Agreement.

Subdivider shall also provide additional Labor & Materials Security as required by Section 2 of this Agreement for 50 '3/0 of the total estimated cost of the Improvements as changed, altered, or amended.
(b) Subdivider shall construct all Improvements in a good and workman like manner and in accordance with the City Standards in effect as of the date of the Approval Action specified on Page One (1) hereof. The City reserves the right to modify the Standards applicable to the Subdivision and this Agreement, when necessary to protect the public safety or welfare or to comply with applicable State or Federal law or City zoning ordinances. If Subdivider requests and is granted an extension of time for completion of the Improvements, the City may apply the Standards in effect at the time the extension is granted.

4. Modification of Drainage Plan. Subdivider agrees that if during the course of construction and installation of Improvements it shall be determined by the City Engineer that revision of the

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drainage plan is necessary in the public interest, it will undertake such design and construction changes as may be reasonable and as are indicated by the City Engineer and approved by City.

Said changes, if any, shall be confined to the Property.

5. Reserved.

6. Inspections; Final Acceptance and Certification of Improvements. (a) Subdivider shall at all times maintain proper facilities and safe access for inspection of the Improvements by City inspectors and to the shops wherein any work is in preparation.
(b) Upon completion of the Improvements covered in this Agreement, the Subdivider shall request a final inspection by the City Engineer or his/her authorized representative.

Following receipt of such request, the City Engineer shall inspect the Improvements, make certain determinations and take certain actions as follows:
(i) If the City Engineer, or his/her authorized representative, determines that the Public Improvements requiring acceptance by another public agency have been completed in accordance with this Agreement, then the City Engineer shall request said agency to make a final inspection of such improvements and certify to the City that such improvements have been completed and installed to the satisfaction of said agency. Upon receipt of such certification, the City Engineer may release or reduce the securities held for such improvements. Any certification and/or acceptance of the Public Improvements shall not constitute a waiver of any defects by City.
(ii) For Improvements not requiring dedication to or acceptance by the a public agency (the "Private Improvements"), the City Engineer or his/her authorized representative shall inspect such improvements, and/or shall have the discretion to accept a certification from Subdivider's registered civil engineer stating that the Private Improvements have been completed in accordance with the approved Plans, City Standards and the Tentative Map. If the City Engineer, or his/her authorized representative, makes a finding, based on his/her own inspection (and/or any certification submitted by Subdivider's registered civil engineer) that the Private Improvements have been installed and constructed in accordance with the approved Plans, City Standards and the Tentative Map, the City Engineer shall recommend certification of the completion of the Private Improvements by placing an item on the next most convenient City Council agenda requesting certification and authorization to release the Improvement Securities. Said determination by the City Engineer and agendization of the certification and release shall not be unreasonably withheld or delayed.
(c) Subdivider shall bear all costs of inspection and certification of the Improvements.

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7. Release of Improvement Securities.
(a) The Performance Security shall be fully released only upon the final completion and certification of all Private Improvements and Public Improvements. Partial releases may be permitted subject to the provisions of Subsections (a)(i) and (a)(ii) hereof. Upon final completion of the Public and Private Improvements under this Agreement, and after City Council acceptance/certification, the City shall file a Notice of Completion in accordance with the California Civil Code.
(i) The City Engineer may release a portion of the Performance Security, as work on the Improvements progresses, upon written application thereof by the Subdivider; provided, however, that no such release shall be considered by City for an amount less the cost estimate of the remaining work does not exceed twenty percent (20%) or less of the estimate of the total amount of work to be done as shown in Exhibit "B". Upon approval of a partial release or the reduction of Performance Security, the City shall not reduce such Performance Security to an amount less than two hundred percent (200%) of the value of the work remaining to be done. City and Subdivider agree that not more than two requests for reduction or partial release of Performance Security shall be considered between the start of construction and the completion and acceptance/certification of the Improvements by the City.
(ii) In no event shall the City Engineer authorize a release or reduction of the Performance Security which would reduce such security to an amount below that required to guarantee the completion of the Improvements and any other obligations imposed upon Subdivider by this Agreement.
(iii) No partial reduction or release of the Performance Security shall constitute or be construed as the City's acceptance or certification of any Improvements or related work. Such partial reductions or releases (if any) will merely reflect that a certain portion of the required work has been done.
(b) The Labor & Materials Security shall, ninety (90) days after the City's recordation of the Notice of Completion described in Subsection 7(a), be reduced to an amount equal to the total claimed by all claimants for whom liens have been filed and of which notice has been given to City, plus an amount reasonably determined by the City Engineer to be required to assure the performance of any other obligations secured by the Labor & Materials Security and to cover related legal costs. The balance shall be released upon the settlement of all claims and obligations for which the Labor & Materials Security was given. If no claims or liens have been filed and no notice has been given to City within said ninety (90) day period, then the Labor & Materials Security shall be released in full. (c) The Warranty Security shall not be released until after the expiration of the one-year (1 -year) warranty period and until any claims filed during the warranty period have been settled. As provided in Section 11, below, the warranty period shall not commence until final acceptance/certification of the Improvements and related work by the City Council.

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(d) The Monumentation Security may be released in full by the City Engineer in accordance with the terms of the separate monument agreement with the City, or if there is none, upon submittal of the following:
(i) a written certification from the professional engineer or surveyor responsible for setting the monuments stating that all the final monuments for the Subdivision have been set in accordance with the Professional Land Surveyors Act and the Subdivision Map Act, and that the professional engineer or surveyor has been paid in full by Subdivider for such services; and
(ii) centerline tie sheets prepared in a manner acceptable to the City Engineer showing the locations of centerline monuments in existing public or private streets; and
(iii) any Record of Survey required by this Agreement has been filed with the County of Riverside and recorded.
(e) The City may retain from any Improvement Securities released an amount sufficient to cover costs and reasonable expenses and fees, including reasonable attorneys' fees.

8. Iniury to Public Improvements, Public Property or Public Utilities Facilities.

Subdivider shall replace or repair or cause the repair or replacement of any and all public or private improvements, public utilities facilities and survey or subdivision monuments which are destroyed or damaged as a result of any work under this Agreement. Subdivider shall bear the entire cost of replacement or repairs of any and all public or private improvements or utility property damaged or destroyed by reason of any work done under this Agreement, whether such property is owned by the United States or any agency thereof, or the State of California, or any agency or political subdivision thereof, or by the City or any public or private utility corporation or by any combination of such owners. Any repair or replacement shall be made to the reasonable satisfaction, and subject to the approval of the City Engineer and the owner of any such public or private improvement.

9. Permits. Subdivider shall, at Subdivider's expense, obtain all necessary permits and licenses for the construction and installation of the Improvements, give all necessary notices and pay all fees and taxes required by law.

10. Notice of Breach/Default of Subdivider.
(a) Default of Subdivider shall include, but not be limited to: (1) Subdivider's failure to timely complete construction of the Improvements; (2) Subdivider's unwarranted failure to timely cure any defect in the Improvements; (3) Subdivider's failure to perform substantial construction work for a period of twenty (20) consecutive calendar days after commencement of the work; (4) Subdivider's insolvency, appointment of a receiver, or the filing of any petition in bankruptcy either voluntary or involuntary which Subdivider fails to discharge within thirty (30) days; (5) the commencement of a foreclosure action against the

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Property or a portion thereof, or any conveyance in lieu or in avoidance of foreclosure; (6) Subdivider's failure to keep the Improvement Securities in full force and effect; (7) Subdivider's failure to notify the City of any sale, transfer or other disposition of the Property to a purported new Subdivider; (8) Subdivider's failure to maintain insurance; or (9) the failure of Subdivider or Subdivider's contractors, subcontractors, agents or employees to comply with any other terms and provisions of this Agreement. (b) In the event of any such default, the City Engineer or the City Council may serve written notice to Subdivider specifying in reasonable detail the nature of the default.

Subdivider shall have thirty (30) days from receipt of said notice to cure the default; provided that, if the default is not reasonably susceptible to being cured within said thirty (30) days, Subdivider shall have a reasonable period of time to cure the default so long as Subdivider commences to cure the default within said thirty (30) days and diligently prosecutes the cure to completion.
(c) If following service of such written notice of default, Subdivider fails to cure or commence curing the default to the satisfaction of City within the cure period specified in Subsection 10(b), above, the City Engineer or the City Council may serve notice of Subdivider's default upon Subdivider and where applicable Subdivider's surety, or the holder(s) of any other Improvement Securities, in accordance with the notice provisions set forth in Section 22 of this Agreement.
(d) In the event of service of the notice of default specified in Subsection 10(c), above, Subdivider's surety shall have the duty to take over and complete the Improvements and related work required under this Agreement; provided; however, that if the surety, within twenty (20) days after the serving upon it of such notice of default, does not give the City written notice of its intention to take over the construction of said Improvements or does not, within ten (10) days after giving City notice of such election, commence to complete the Improvements, City may take over the work and prosecute the Improvements to completion, by contract or by any other method City may deem advisable, for the account and at the expense of Subdivider, and Subdivider's surety shall be liable to City for any costs or damages occasioned City thereby; and, in such event, City, without liability for so doing, may take possession of, and utilize in completing the Improvements, such materials, appliances, plant and other property belonging to Subdivider as may be on the site of the work and necessary for the completion of same.
(e) The City reserves to itself all remedies available to it at law or in equity for Subdivider's default under this Agreement. The City shall have the right, subject to this Section, to draw upon or utilize the appropriate Improvement Securities to mitigate City's damages in event of default by Subdivider. The right of City to draw upon or utilize the Improvement Securities is additional to and not in lieu of any other remedy available to City. It is specifically recognized that the estimated costs and amounts of Improvement Securities may not reflect the actual cost of construction or installation of the Improvements, and therefore, City's damages for Subdivider's default shall be measured by the actual cost of completing the required Improvements. The sums provided by the Page9of19

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Improvement Securities may be used by City for the completion of the Improvements in accordance with the Plans.
(f) Failure of Subdivider to comply with the terms of this Agreement, including but not limited to, construction of all the Improvements as set forth herein and as required by the Tentative Map, shall constitute Subdivider's consent to: (1) the filing by City of a notice of violation against all of the lots in the Subdivision; (2) withholding of Building permits, utility connections and/or Certificates of Occupancy. The remedies provided by this Subsection (f) are in addition to and not in lieu of any other remedies available to City at law or in equity. Subdivider agrees that the choice of remedy or remedies for Subdivider's default or breach shall be in the sole discretion of City.
(g) In the event that Subdivider fails to perform any obligation hereunder, Subdivider agrees to pay all costs and expenses incurred by City in securing performances of such obligations, including costs of suit and reasonable attorney's fees. (h) The failure of City to take an enforcement action with respect to a default, or to declare a default or breach, shall not be construed as a waiver of that default or breach, or of any subsequent default or breach of Subdivider. Any failure by the City to enforce any provision of this Agreement shall not be construed as a waiver of the right to compel enforcement of such provision(s) and further shall not act to release any surety from its obligations under this Agreement.

11. Warranty.
(a) For a period of one (1) year after final acceptance/certification by the City Council of the Improvements, Subdivider shall guarantee or warranty all the Improvements against any defective work or labor done or defective materials furnished. If within the warranty period any work relating to the Improvements or any part of thereof furnished, installed, constructed or caused to be done, furnished, installed or constructed by Subdivider fails to fulfill any of the requirements of this Agreement or the Plans, Subdivider shall without delay and without any cost to City, commence to repair or replace or reconstruct any defective or otherwise unsatisfactory part or parts of the work or structure within thirty (30) days of receiving written notice from City of the defect and diligently prosecute the repair or replacement work to completion.
(b) Should Subdivider fail to act promptly or in accordance with the repair/replacement requirements set forth herein, Subdivider hereby authorizes City, at City's option, to perform the repair/replacement work twenty (20) days after mailing written notice to Subdivider and to Subdivider's surety, and Subdivider agrees to pay City for the cost of such work.
(c) Should the City determine that an emergency or a threat to the public safety and welfare exists from the condition of the Improvements which require repairs, replacements or remedial measures to be made before Subdivider can be notified, City may, in its sole

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Beaumont City CouncilMay 5, 2026

Beaumont City Council
May 5, 2026