HomeMy WebLinkAboutSewer Study 3905 Marriott DrSewer Study for Homewood Suites, 3905 Marriott Dr, Bakersfield, CA – 8/27/2018 Revised 4/18/2019
LAV//Pinnacle Engineering Page i
Table of Contents
1.0 Introduction ......................................................................................................................................... 1
2.0 Sewer Flow Calculations and Pipe Sizing ......................................................................................... 1
3.0 Proposed On-Site Sewer System ........................................................................................................ 2
4.0 Conclusions and Recommendations .................................................................................................. 2
Appendix “A”: Utility Plans
• Utility Plan for Refresh Travel Plaza
Appendix “B”: Exhibits
• Exhibit “A” – Aerial Photo
• Exhibit “B” – “On-site” Sewer Study
Appendix “C”: Calculations
• Table 1 – Sewer Flow and Pipe Size Calculations
• California Plumbing Code Table H 201.1(2)
Appendix “D”: Adjacent Hotel Plans
• Holiday Inn & Suites Grading Plan
• Staybridge Suites Grading Plan
Sewer Study for Homewood Suites, 3905 Marriott Dr, Bakersfield, CA – 8/27/2018 Revised 4/18/2019
LAV//Pinnacle Engineering Page 1 of 2
1.0 Introduction
This report has been prepared as a master sewer study for the development of a 2.75-acre hotel
site, named Homewood Suites, located in the City of Bakersfield, California, and sometimes
referred to in this report as “Project”. The purpose of this report is to show the basis of design for
the “on-site” sewer system.
The project fronts the north side of Burr Street in Bakersfield, California. The address for the site
is 3905 Marriot Drive, Bakersfield and APN 332-470-34. The proposed Project is a 110-room
hotel site with a future planned building on the east end of the property. The future planned
building is not in the scope of this report. Three hotel sites abut the Project boundary to the north.
An existing 6-inch sewer line stub on the north end of the Project site with serve as the tie-in point
to the Project. The existing 6-inch sewer line runs north through the Springhill Suites Hotel site,
becomes an 8-inch line approximately 150 feet south of Marriot Drive, and connects to the City of
Bakersfield sewer main line in Marriott Drive.
The Project site is located within the City of Bakersfield Mohawk Planned Sewer Area. The
Mohawk Planned Sewer Area master study had been prepared previously; however, the master
study was absent from city archives and therefore is not included in this study.
Exhibit “A” herein shows the Project location and Exhibit “B” shows the site layout. Grading
plans, provided by the City of Bakersfield, of the Holiday Inn & Suites and Staybridge Suites hotel
sites have been included in Appendix D. The grading plans show the locations of the sewer lines
in addition to the pipe sizes and slopes.
2.0 Sewer Flow Calculations and Pipe Sizing
Table H 201.1(2) in Appendix “H” of the California Plumbing Code estimates flow rates for
hotels as 60 gallons per day per bed. We have assumed 2 beds per room; therefore, the daily sewer
flow from the hotel has been estimated herein based on 100 gallons per day per room.
Conservatively, one hundred percent occupancy has been assumed for these calculations, which
Sewer Study for Homewood Suites, 3905 Marriott Dr, Bakersfield, CA – 8/27/2018 Revised 4/18/2019
LAV//Pinnacle Engineering Page 2 of 2
have been shown on Table 1 in Appendix C. In accordance with City Standards, a peaking factor
of 1.8 was applied to the daily flow estimate for the hotel sites to yield the design flow rate. The
design flow rate is used to size pipelines.
In accordance with City of Bakersfield Standards, sewer pipes have been sized with a physical
gradient to flow at a minimum velocity of 2 feet per second or greater when flow full or half full,
and to not exceed a velocity of 10 feet per second. Since all pipe is PVC, a Manning’s “n” value
of 0.0113 was used for flow calculations.
3.0 Proposed On-Site Sewer System
The proposed on-site sewer system has been shown on Exhibit “C” herein. Some notable
components are as follows:
• The on-site system ties into the existing 6-inch stub on the Springhill Suites Hotel site,
which then connects to the City of Bakersfield sewer main in Marriott Dr. The “as-built”
depth of said 6-inch stub is more than adequate to achieve gravity flow from the entire
development.
• Proposed sewer lines are more than one foot below proposed domestic water lines.
• Although the exact components of Future Proposed Building on the east end of the Project
site are unknown, a pipe stub has been provided that is adequate in size.
4.0 Conclusions and Recommendations
The proposed system is adequate to collect on-site sewer and convey it to the municipal system.
The design has been conservative including pipe stubs to future development.
Appendix “A”
Utility Plan
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SITE UTILITY PLAN
HOMEWOOD SUITES
3905 MARRIOT DRIVE
BAKERSFIELD, CALIFORNIA
S.P.R. NO. 17-0405
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“”
Appendix “B”
Exhibits
SR 58/ ROSEDALE
H
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SR 99/ GOLDEN STATE HWY
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EXHIBIT "A" - AERIAL MAP
HOMEWOOD SUITES
3905 MARRIOTT DRIVE & 3820 BURR ST.
BAKERSFIELD, CALIFORNIA
1
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LAV// Pinnacle Engineering
12418 Rosedale Hwy., Suite A, Bakersfield, CA 93312
Phone: (661) 869-0184 Fax: (661) 885-4155
ENGINEERING ●PLANNING ●SURVEYING
EXHIBI
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EXHIBIT
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EXHIBIT "B" - SEWER STUDY
3905 MARRIOTT DRIVE
Appendix “C”
Calculations
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.
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8
.
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.
0
5
0
Sp
r
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n
g
h
i
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Su
i
t
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s
3
.
1
6
N
/
A
1
1
9
0
.
0
2
2
9
.
9
2
1
4
,
2
8
0
1
.
8
0
.
0
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7
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8
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8
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.
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3
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.
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5
0
To
t
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l
3
.
1
6
0
.
0
7
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0
.
1
1
4
3
,
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.
1
2
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4
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2
0
8
0
.
0
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3
3
0
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0
5
0
No
t
e
s
:
1.
S
e
w
e
r
D
e
s
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g
n
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l
o
w
a
n
d
s
e
w
e
r
p
i
p
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s
i
z
e
c
a
l
c
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l
a
t
e
d
u
s
i
n
g
C
i
t
y
o
f
B
a
k
e
r
s
f
i
e
l
d
S
t
a
n
d
a
r
d
s
2.
A
v
e
r
a
g
e
d
a
i
l
y
f
l
o
w
b
a
s
e
d
o
n
C
U
P
C
a
s
s
u
m
p
t
i
o
n
o
f
6
0
g
a
l
/
d
a
y
p
e
r
b
e
d
.
2
B
e
d
s
p
e
r
r
o
o
m
a
s
s
u
m
e
d
So
u
r
c
e
:
h
t
t
p
:
/
/
w
w
w
.
b
a
k
e
r
s
f
i
e
l
d
c
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t
y
.
u
s
/
c
i
v
i
c
a
x
/
f
i
l
e
b
a
n
k
/
b
l
o
b
d
l
o
a
d
.
a
s
p
x
?
b
l
o
b
i
d
=
2
9
3
4
5
Ta
b
l
e
1
Se
w
e
r
Fl
o
w
Ca
l
c
u
l
a
t
i
o
n
s
Ho
m
e
w
o
o
d
Su
i
t
e
s
39
0
5
Ma
r
r
i
o
t
t
Dr
As
s
u
m
p
t
i
o
n
s
LA
V
/
/
P
I
N
N
A
C
L
E
E
n
g
i
n
e
e
r
i
n
g
1/23/2019 2016 California Plumbing Code
http://epubs.iapmo.org/2016/CPC/mobile/index.html#p=480 1/2
1/23/2019 2016 California Plumbing Code
http://epubs.iapmo.org/2016/CPC/mobile/index.html#p=480 2/2
Appendix “D”
Adjacent Hotel Plans