Resolution No. 25-9514 (Sanitary Sewer Master Plan Update) — City Council and Authorities Concurrent, December 9, 2025 (part 3 of 3)

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7.0 ft
Conduit mate
width (in)
length (ft)
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D5 velocity (ft/s)
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ground (ft AD)
flood dep (ft)
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Project 10: Patrick Henry Drive
Cost estimate not included because project will be paid for by the developer.

Pecos Way
Palamos Ave Prescott Ave
Sandia Ave
Calabazas Creek
Fairwood Ave
Patrick Henry Dr
Demo
c
racy Way
Pecos Way
Manzano Way
Palamos Ave Prescott Ave
Tasman Dr
Fairwood School
Reamwood
Station
Westbound
Reamwood
Station
Eastbound
Patr
i
ck Henry Dr
Fairwood Ave
Sandia Ave
Manzano Way
San Tomas Aquino Creek
Old Ironsides Dr
Ta
s
m
an Dr
Great America Pkwy
California's
Great America
Old Ironsides
Station
Great America
Station
Patrick Henry D
r
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S83-1 S83-2 S83-3 S83-5
S82-8 S82-7
S82-6
S82-5
S82-4
S82-3
S82-2
S82-1
S93-59 S93-60
S93-56
S93-55
S93-53
S92-17
S92-16
NEWSSMH1
Legend
±
Figure Exported: 9/2/2024 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2023_TMFigures.aprx Project #: 0012307.00
Map Created: July 2024
0 0.05 0.1 0.2
Miles
Project 10
Patrick Henry Drive
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project !( PHD Manholes
PHD Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wolfe Rd
Creek B
lvd
Miller Ave
G2

UPERTINO

Y V ALE
Tasm
an Dr
N 1st St
M
on
r
oe
St
Kiely Blvd
San To mas Expy
237
G4
San José Mineta
International
Airport
S ANTA
CLARA
- Woodard
&Curran
Project 10: Patrick Henry Drive
Project Solution Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network 2,262 LF of new 6- to 12-inch PHD sewers tributaries to main profile. • • • T • T )) • )) T )) ))) • ))) • )))

16.0 -

15.0 - ··········································································································································································································································· / I II • ----- 13.0 - , •••
-- Non•surcharge
d/0 = 1 (backwater
- surcharge) •••••••• •••••••••• , •••••• I••••••••• . ....... . d/0 = 2 (throttle
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9.0 / J.11-------H·--"' ~ "-·-----+l·----I ·········· ······+~--------+~---------+

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1 52 1312 1?°18 21s 1 2406 25~8 2652 3010 350 1 3872
Link
Conduit mate
width (in)
length (ft)
pfc (MGO)
us inv (ft AD)
ds inv (ft AD)
sure
D5flow (MGD)
D5 velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)
592. 15

13.180
-4,600
592. 15,1
UNKN

8.0 OA7

8.500

6.700

0.59 0.1486

1.661
ss2. 1.1 ss2.2.1

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6.160
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0.2963 0.5975

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2.19 5.020

4.660

1.00 1.8146

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ss3.1,1
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21.0 3.33

4.660

4.170

1.00 1.9345

1.345
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.7,194
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21.0 225.3

3.34 [:J

1.00 2.8987

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3.22 3.33

3.930 3.790

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593.55,1
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39.0 15.18

3.000

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0.69 14.5425

4.367
593.53

13.900
.9,152
Project 11: Tasman/GAP
Cost estimate not included because project will be paid for by the developer.

Mountain View-Alviso Rd
Elko Dr Anvilwood Ave
Birchwood Dr
Pecos Way
Palamos Ave
Calabazas Creek
Patrick Henry Dr
Bunker Hill Ln
Elko Dr
Reamwood Ave
Hammerwood Ave
Betsy Ross Dr
Forgewood Ave
Calabazas Creek
Fairwood Ave
Patrick Henry Dr
Democracy Way
Pecos Way
Manzano Way
Palamos Ave Prescott Ave
Tasman Dr
Reamwood
Station
Westbound
Reamwood
Station
Eastbound
San
Tomas Aquino Creek
Bunker Hill Ln
Stars and Stripes
Sta
r
s
and Stripes
Dr
Great America Pkwy
San Tomas Aquino Creek
Old Ironsides Dr
Great America Pkwy
Old Ironsides
Station
Great America
Station
Calle del Mun
Lafayette St
Great America
Amtrak Station
San Tomas Aquino Creek
Lakeshore Dr
Gillmor St
Bill Walsh Way Gianera St
Tasman Dr
Levis Stadium
Santa Clara
Youth Soccer
Park
Levi's Stadium
& & &
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OS-1
PHD-9
PHD-6 PHD-7 PHD-8 PHD-5 PHD-4
PHD-3
PHD-1
OIS-6
OIS-5
S93-48
S93-38
S92-12
PHD-19
PHD-18
PHD-16 PHD-17
PHD-15
PHD-14
PHD-13
PHD-12
PHD-11
PHD-10
SSMH-46
SSMH-32
SSMH-24
SSMH-22 12 in
12 in
12 in
12 in
12 in
12 in
12 in
12 in
12 in 12 in
12 in
Legend
±
Figure Exported: 8/18/2025 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2024_Report.aprx Project #: 0012307.00
Map Created: July 2024
0 0.05 0.1 0.2
Miles
Project 11
Tasman/GAP
(Revised Option 2A)
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project !( Tasman/GAP Manholes
Tasman/GAP Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wolfe Rd
N Fair Oaks Ave
Creek Blvd
G2

UPERTINO

Y V ALE
McCarthy Blv
Tasma
n
d
Dr
Kiely Blvd
San To mas Exp y
237
G4
82 San José Mineta
International
Airport
S ANTA
CLARA
- Woodard &Curran
Project 11: Tasman/GAP
Project Solution Profile View 1 of 3
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network All Pipes in the profile are new.

11.0 - ·····································································································································································································································································································

9.0 - · ..............................................................................................................................................................................................................................................................................

Non-surcharge
d/0 = 1 (backwater i---,,._
surcharge)
d/0 = 2 (throttle
surcharge) 7.0 - · ................................................... ........................................... ................................... ........... .............................................. .............................................. ······································· '----,-,---"-'----....J............... . s.o - - I·
I·
1 .o - ·n== = =---=-•··=···=····=···=····=···4·1 i=···:::.: ····::.:: ···=····:.::: ···.:::. ····::.:: ···=····::.:: ···=····=:···=1······ ................................... ............ .............................................. .............................................. ................................................ >·············································· . r----_j
. 1.0 - ·· ............................................................................................................... . • 3,0
~
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I
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i 6
:,:
~
I I
ft 0 311 576
Link 592. 12.1 PH0. 1,1 PH0.3.1
Conduit mate I\JNKN UNKN UNKN
width (in) ·= 12.0 12.0
length (ft) 265.0 218.0
pfc (MGD) 0.64 1.06 1.05
us inv (ft AD) 0.030 -0.210 -0.770
ds inv (ft AD) -0.210 -0.770 -1.220
sure 0.21 0.23 0.32
DSflow (MGD) 0.0775 0.1064 0.11 22
OS velocity (ft/s) 1.082 1.239 0.894
Node 592-12 PHD-1 PHD-3
ground (ft AD) 10.930 10.370
flood dep (ft) -10.686 -10.381 -
-

10.370
~ ·······§········;::: ··········:::! ····· t:::·=" ·········· =:.:.:.:. ·········· ::.:.:.:.:.:.:. ·········=J······· •••••••••••••••••••••••••••••••••••••••••••••••• >·············································· - . ~ N ~
i 6 6 :,: :,: ~ ~
I I I
794 875 11 56
PHD-4,1 PH0.2.1

UNKN UNKN

12.0 12.0

81.0 281.0

1.06 1.06
-1.220 • 1.390
• 1.390 -1.980
046 047

0.11 23 04524
0489 1.940
PHD-4 PHD-2 PHD-5
- - - -11,178 -10.796 -11.668
"' 6
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~
I
1437
PHO.S.1 PHD-6.1

UNKN UNKN

12.0 12.0
281.0 297.0

1.06 1.06
-1.980 -2.570
-2.570 -3.200
048 048
04787 04787

2.007 2.004
PHD-6
-
-

11.334
I
1734
PHD-7
-
-

12.279
PHD-7.1
UNKN

12.0 285.0

1.06 -3.200
-3.800
048
04786

2.362
2019
.
s
.
.
.
-.
.
.
.
.

PHD-8
-1
-

2.604
Project 11: Tasman/GAP
Project Solution Profile View 2 of 3
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network 785 LF of new 12-inch sewers tributaries to profile in Old Ironsides Drive All Pipes in the profile are new.

12.0 - ·······································································································································································--------------------

11.0 - ·······································································································································································-----= :::=--=::::1 F ========-- -~=====J ------- -- Non-surcharge
d/D = 1 (backwater I----.-~
surcharge)
d/D = 2 (throttle
::0 -· ............................................................... ~ ............................ ~ ·····-········································· •······································································· surcharge) •·················

8.0 7.0
0 6.0 < =

5.0 4.0
- r-----.._ L...--
- !......______ ------
- ·· •••••••••••••••••••••••••••• ~ 1-················· .................

3.0 r;;;:====~ ·=··········d·········· ..................................................................................................................................... .

2.0 1-·························· 1-················· ··········································-------··-

1.0 1-·························· 1-················· ......................................... . o.o - -~ ---··················································· J ......................................... co ·················· ~ ----------------------------------------------------------------------------------·-o-······················································································································· ± qi ± ~ "7 • 1.0
ft
Link
Conduit mate
width (in)
length (ft)
pfc (MGD)
us inv (ft AD)
ds inv (ft AD)
sure
DSflow (MGD)
OS velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)
:s: 0 :s: :s: -:=i
~ ~ ~ ~ f I
0 SSMH.22.1
UNKN

15.0 165.0

4.18 5.870
4,220

0.14 0.0908

1.342
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9.630
.3,684
I
165
PH0.9
-
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15.0 128.0
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293 352
SSMH. 18,1
UNKN

12.0 59.0

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0.38 0.3863
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SSMH. 18 SSMH.54

8.270 9.050
-4,987 .5,971
SSMH.54,1
UNKN

12.0 24'9.0

1.53 2.730

1.634

0.35 0.3863
2A43
I
601
PH0. 10
-.9.329
PH0. 10,1
UNKN

12.0 394.0

1.53 1.634
-0.099

1.00 0.3867

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995 1026
.

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12.0 31.0

1.02 -0.099
-0.160

1.00 0.3867

0.727
PH0. 11 .
- .
-8.877 .

Project 11: Tasman/GAP
Project Solution Profile View 3 of 3
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network 506 LF new of 12-inch sewers tributaries to profile in Old Glory Ln All Pipes in the profile are new.

19.0 - - Non-surcharge
d/D = 1 (backwater
:::-........................... ~ 7 K .......... .. ............................... ~·1 .. T·= .. = ... :... :.. ~ ... ~ .. ~ ... = ... = .. = ... :... :.. : ... :.. : ... ~ ... ~ .. ; ... ;... ;.. ~ ... ;.. = ... ~ ... ~ .. ; ... ~ ... ~ .. : ... : .. : ... : ... :.. : ... : ... = .. ~ ... ~ .. = ... : ... :.. : ... :... :.. : ... :.. : ... : ... :.. : ... :... :.. : ... :.. : ... : ... :.. ~ ... ~ ... = .. 1· ;;~~~D§rch~=~a;~~~~~~ro;tt;le:=±~ -------- surcharge) 13.0 - ···················· =--~················· ...... , ......... .................................... . ..

11.0 - · ........................................ .

9.0 ...................................... ........... .. ............................................................ !---------------------------------'

7.0 - ·· ................................................ , ........... .

5.0 3.0

1.0 .. .
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·5.0 --";,.... I -----------':=-- , --':;:.... , - ---':I'------------':I'-----':;:.... , ---------------':;:.... , ---------------;:,'----------":I'---------..:i:'- ft 0 297 358 440 708 804 1233 1711 1965 2201
Link 55MH·46.1 . . PHD-16.1 . PHD-18.1 0 5-1.1 55MH·32.1 PHD-19.1 Conduit mate UNKN . UNKN' UNKN UNKN UNKN UNKN UNKN UNKN width (in) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 length (ft) 297.0 61.0 82.0 268.0 96.0 429.0 478.0 254.0 236.0 pfc (MGD) 1.26 1.26 1.26 1.26 1.26 1.26 1.26 1.26 1.26
us inv (ft ADJ 8.730 7.839 7.656 7.410 6.606 6.318 5.031 3.500 2.738 ds inv (ft ADJ 7.839 7.656 7.410 6.606 6.318 5.031 3.597 2.738 2.030 sure 0.42 0.42 0.42 0.42 0.42 0.42 0.68 1.00 1.00
D5 flow (MGD) 0.4552 . 0.4550 0.4549 0.4549 0.4548 0.4992 0.5503 0.5499 D5 velocity (ft/s) 2.244 2.244 2.244 2.244 2.243 2.222 2.863 1.744 1.031 Node 55MH·46 PHD-14 . PHD-16 PHD-17 PHD-18 0 5·1 55MH·32 PHD-19 593-48 ground (ft ADJ 11.340 - I - - - - 11.810 - 13.290
flood dep (ft) ·2.449 ·6.525 . ·7.805 ·6.641 ·8.103 • 7.865 • 7.532 ·8.160 ·9.263 Project 12: GAP West Trunk
Project No. ……………………………………………………………………………………………………………………………………………… 12 Project ID ……………………………………………………………………………………………………………………………………………… GAP West Trunk Project Location ……………………………………………………………………………………………………………………………………………… S of West Tasman Dr to Lafayette St Description ……………………………………………………………………………………………………………………………………………… 4810 LF of 36 to 42-inch diameter pipe Priority ……………………………………………………………………………………………………………………………………………… 3 Flow Confidence Level……………………………………………………………………………………………………………………………………………… 2 Loads Trigger ……………………………………………………………………………………………………………………………………………… Long-Term Future Loads (LTFL) Design Flow Trigger ……………………………………………………………………………………………………………………………………………… Wet Weather Flow (WWF) Physical Network Trigger ……………………………………………………………………………………………………………………………………………… Unlined Model Network (UMN) Estimated Capital Improvement Cost ……………………………………………………………………………………………………………………………………………… $17,781,000 Comments ……………………………………………………………………………………………………………………………………………… Assumptions ……………………………………………………………………………………………………………………………………………… (i) New diameter based on pipe replacement. (ii) Cost estimates are based on CCI of 15367.24 from the August 2024 ENR.

Alternatives ……………………………………………………………………………………………………………………………………………… City may wish to consider evaluating alternatives during preliminary design that would replace or remove this siphon that crosses under the San Tomas Aquino Creek, if feasible.

U/S
MH ID
D/S
MH ID
Existing Diameter
(inches)
New
Diameter
(inches)
Length
(feet)
Slope
(%)
Pipe Depth
(feet BGL)
Existing
Pipe
Capacity
(mgd)
Future
Pipe
Capacity
(mgd)
Long-Term
Future
PDWF
(mgd)
Long-Term
Future
PWWF
(mgd)
Long-Term
Future DWF
Velocity
(ft/sec)
Open Cut
Cost
Trenchless
Installation
Trenchless
Casing Size
Unit Cost
($/LF)
Total Cost
($)
S93-42 S93-36 29 36 401 0.13 14 8.41 15.67 10.16 10.57 3.71 $1,239 $1,239 $ 496,839 S93-36 S93-21 29 36 452 0.16 13 9.51 17.09 10.79 11.33 3.91 $1,239 PTGAB 48.00 $2,805 $ 1,267,788 S93-21 S93-4 29 36 451 0.18 13 10.17 18.27 10.88 11.43 3.47 $1,239 $1,239 $ 558,789 S93-4 S103-22 29 36 447 0.09 14 7.36 13.22 11.00 11.55 5.28 $1,239 $1,239 $ 553,337 S103-22 S103-19 29 42 388 0.05 20 5.55 15.14 12.48 12.85 5.21 $1,399 $1,399 $ 542,113 S103-16 S103-14 31 42 245 0.12 23 10.45 22.77 12.48 12.85 3.37 $1,399 $1,399 $ 342,335 S103-14 S103-9 31 42 101 0.20 20 13.28 28.95 12.48 12.85 3.25 $1,399 $1,399 $ 141,159 S103-9 S103-10 32 42 375 0.09 19 9.38 19.87 13.21 13.70 3.46 $1,369 $1,369 $ 513,375 S103-10 S103-12 32 42 468 0.10 17 9.53 20.17 13.20 13.70 3.49 $1,369 $1,369 $ 640,281 S103-12 S104-24 32 42 468 0.10 16 9.53 20.17 13.20 13.70 3.58 $1,369 $1,369 $ 640,144 S104-24 S104-26 32 42 477 0.09 19 9.43 19.98 13.20 13.70 3.91 $1,369 $1,369 $ 652,739 S104-26 S104-23 31 42 423 0.10 17 9.18 20.00 13.20 13.69 5.68 $1,369 $1,369 $ 579,087 S104-23 S104-51 31 42 62 0.71 16 25.20 54.92 13.20 13.69 5.68 $1,369 $1,369 $ 84,467 S104-51 S104-19 36 42 54 0.80 17 37.62 58.03 13.20 13.69 4.46 $1,369 $1,369 $ 73,926 Total Baseline Pipe Construction Cost $ 5,818,593
Total Trenchless Installation Cost $ 1,267,788
No Jacking Pit $ -
No Receiving Pit $ -
Installation or Adjustment of Weir in Existing Manhole Structure $ - Lateral Reconnection Cost (Approx. 6) $ 3,000
Modify Existing Manholes Cost (Approx. 16) $ 280,000
Baseline Construction Cost: $ 7,369,380
Dewatering $ 432,855
Bypass Pumping $ 708,638
Remove & Replace Factor $ 354,319
Traffic Control (20%) $ 1,417,276
Pavement Restoration (T-trench) $ 138,352
Subtotal: $ 10,420,820
Mobilization/Demobilization (5% of subtotal) $ 521,041.02 Estimated Construction Cost Subtotal: $ 10,941,861
Contingencies (30% of construction subtotal) 3,282,558.41 $ Estimated Construction Cost: $ 14,224,420
Engineering and Inspection (25% of construction cost) $ 3,556,105 Estimated Capital Improvement Cost: $ 17,781,000
(Note: Cost estimates are based on August 2024 ENR CCI of 15367.24 for the San Francisco Area) (v) Two pipe segments between manholes S93-48 and S93-42 that are downstream of the PHD project and the GAP West project are not included in the proposed project because they would still have capacity based on the City’s capacity criteria of no surcharge; however, the City may wish to consider expanding the project to include them during preliminary design. (vi)

PROJECT COST DETAIL

O
ld Moun
t
a
i
n Vi
ew-A
l
viso Rd
Patrick Henry Dr
Bunker Hill LnBetsy Ross Dr
ai
n
View
Alviso
Rd
Patrick Henry Dr
Democracy Way
Tasman Dr
San
Tomas Aquino Creek
Bunker Hill Ln
Stars and Stripes Dr
Great America Pkwy
Santa Clara Golf
and Tennis Club San Tomas Aquino Creek
Ta
s
m
an D
r
Great America Pkwy
Old Ironsides
Station
Great America
Station
Guadalupe River
Calle de Luna
Stars and Stripes Dr
Calle del Mundo
Tasman Dr
Lafayette St
Kathryn Hughes
Elementary
School
Great America
Amtrak Station
Lick Mill Station
Westbound
Avenida de
Las
Flore
Hogan Dr
Ca
lle
d
e
Primavera Fairway Glen Dr
Bill Walsh Way
Levi's Stadium
Fairway Glen
Park
Santa Clara
Youth Soccer
Park
Levi's Stadium
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(31.7 in) 42 in
(28.9 in)
36 in
(28.5 in)
36 in
(28.8 in) 42 in
(31.4 in) 42 in
(31.7 in) 42 in
S93-4
S93-42
S93-36
S93-21
S103-9
S104-51
S104-26
S104-24
S104-23
S104-19
S103-22
S103-19
S103-16
S103-12
S103-10
Legend
±
Figure Exported: 9/3/2024 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2023_TMFigures.aprx Project #: 0012307.00
Map Created: July 2024
0 0.05 0.1 0.2
Miles
Project 12
GAP West Trunk
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project !( Manholes
Project Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wolfe Rd
Creek B
lvd
Miller Ave
G2

UPERTINO

Y V ALE
Tasm
an Dr
N 1st St
M
on
r
oe
St
Kiely Blvd
San To mas Expy
237
G4
San José Mineta
International
Airport
S ANTA
CLARA
Siphon crossing
creek not included
in project
Light rail crossing
- Woodard
&Curran
Project 12: GAP West Trunk
Capacity Deficiency Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network T >>> • • >>> • • >>> • >>> • f >>> • >>> • >>> T >>> • >>> • >>> T' T >>> • >>> • >>> T >>> • >>> • >>> T >>> • • • • • • ~ >>> • >>> • >>> • >>> • >>> " '

27.0 - -----------------------------------------------------------------1---:-:-----:----7-_____ _ Non•surcharge 25-0 - ~ d/0 = 1 (backwater

23.o - -•1-1------<••r---.""l-~ -----------------------------------------------------------1 surcharge)

21.0 - ··

19.0 - ·· .......... r-,-, t:----,___:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::._ __ ~~-~_; _:"""rj'-~h"-t o_tt_1e_...., ::::::::::::::::::::::::::::

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11 .0 -
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1 36 I 31~1 3~6 4035 4453 4884 52
1 51 I ss59 6282 6683 1135 75
1 ft 86 8033 8420 8717 896 1 I 9437
Link
Conduit mate
width (in)
length (ft)
pfc (MGD)
us inv (ft AD)
ds inv (ft AD)
sure
D5 flow (MGD)
D5 velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)
573.7,1
;
658.7
11 .23

0.79 9.7231

4.037
573.7
I
573.2,1 ss3.25,1 ss3.22.1
a ;;;
573.3 573.2
.
~ 10.225 .9,985
305.7 392.1

9.82 10A60
a
4 16.7

0.78 0.70 0.75

9.8966 9.8990 9.9069

4.568 3.862 3.675
ss3.25 ss3.22
~ ~Q,47QJ ~ .9,192 -8.879 .7,827

0.87 $83.17.1
11 .68

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7.030

0.78 ss3.11 .1 SS3-8.1 ss3.5,1

13.09 7.030

6.070

0.72 13.70

6.070

5.250

0.67 UNKN

3.340

0.96 0.97

2.700

0.98 11 A763 11A885 11A882 14.0521 14,1030 14,1700

4.261 4.563 6.010 3.291 3.503 4,242
ss3.11 ss3.11 SS3-8 ss3.5 593-60 593.55
I 11.300 15.1so 16.010 15.600 15.150 13,110
.7449 -6.255 -8.216 -8.835 -8.683 .7.612
I
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~ 6.6

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12.3 10 11A20 [2,7.90 8.980 8.870
.7,860 .7.677 -6.712 -6.727 .7A55 -8.703
9905 10372 10849 11 2i
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VCP = ~ ~
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~ 7.6

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1 .

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'4
~ 76.8
9A3
C:J

2.00 5104•26.1
423.0

9.18 ~ 2.00

1.3291 10.5776 10.5764 10.5734 10.5684 10.5626

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5103.12 5104.24 5104•26
!I 111 rilllll ~ 1 D •12.148 .7,938 •12.11 6 •12A13
Project 12: GAP West Trunk
Project Solution Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network Upsizing
Upsizing
PHD. Not part of the
Project
T >>> • . ))) . • >>> • >>> • , >>> • >>> • >>> T >>> • >>> • >>> r T >>> • >>> • >>> T >>> • >>> • >>> T >>> ••:-:• ~ • ~ >>> • >>> • >>> • >>> • >>> .. ~ 27.0 - ······················································································································································································································································································································

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ft o 659 948 1321 1521 2019 2436 3147 3646 4035 4453 4884 525 5859 6282 6683 7135 7586 8033 8420 8717 8961 I 9437 9905 10372 10849 11 2, Link
Conduit mate
width (in)
length (ft)
pfc (MGD)
us inv (ft AD)
ds inv (ft AD)
sure
D5 flow (MGD)
D5 velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)
573.1.1
;
658.7
11 .23

0.75 9.2880

4.027
573.7
573.2.1 ss3.25.1 ss3.22.1
; ; ; ; ;
288.9
573.3

23.950
. 10.308
392.1 4 16.7
•9,261 -8.936 .7,883
ss3.11.1
11 .68

7.800

7.030

0.78 ss3.11 .1

13.09 7.030

6.070

0.72 6.070

5.250

0.67 3.340

0.74 593-60.1 593.55.1

UNKN UNKN

0.73 2.700

0.69 11 .5037 11 .5 150 11 .5 148 14.3 152 144257 14.54 11 4,263 4.566 6.014 34 17 3.660 4.367
ss3.11 ss3.11 SS3-8 ss3.5 593-60 593.55

17.300 15.180 16.070 15.600 15.150 13.770
.7445 -6.252 -8.218 .94 91 .94 38 -8.s20
593.35.1 593.21.1 593-4.1
i!g5 RCP

36.0 36.0
446.6

9.62 10.62 15.67 17.09 18.27

1.690 1.010 10.120 •0410 •1.120

1.010 0.120 •0410 •1.120 •1.930

0.90 0.81 0.60 0.62 0.71

10.5705 10.5699 10.5684 11.3273 11 4 285

4.173 4494 3.704 3.912 34 74
593-44 593-42 593.35 593.21 593-4

12.3 10 11 4 20 .790 8.980 8.870
.9.350 .94 83 -8.387 -8.251 -8.664 .9.5 19
VCP ~ -
• . 42.0
~ 244.7

0.83 22.77
-8.000
5103.9.1 5103.10.1
~ ~ 42.0
467.7
5103.12.1
i!gl

42.0 467.6

20.17 -6.040
-6490

0.60 13.7017

3.578
5104.24. 1 5104.26. 1
~ l!gl

42.0 476.S

13.6982 13.6922

3.866 5.626
5103.12 5104.24 5104.25

4.860 460 i[J1ru . 13.11 8 -8.790 . 12.s66 . 13.102
Project 13: GAP East Trunk
Project No. ……………………………………………………………………………………………………………………………………………… 13 Project ID ……………………………………………………………………………………………………………………………………………… GAP East Trunk Project Location ……………………………………………………………………………………………………………………………………………… Old Glory Ln to S of Bunker Hill Ln; Stars and Stripes Dr Description ……………………………………………………………………………………………………………………………………………… 231 LF of 39-inch diameter pipe Priority ……………………………………………………………………………………………………………………………………………… 4 Flow Confidence Level……………………………………………………………………………………………………………………………………………… 2 Loads Trigger ……………………………………………………………………………………………………………………………………………… Long-Term Future Loads (LTFL) Design Flow Trigger ……………………………………………………………………………………………………………………………………………… Wet Weather Flow (WWF) Physical Network Trigger ……………………………………………………………………………………………………………………………………………… Lined Model Network (LMN) Estimated Capital Improvement Cost ……………………………………………………………………………………………………………………………………………… $1,002,000 Comments ……………………………………………………………………………………………………………………………………………… Assumptions ……………………………………………………………………………………………………………………………………………… (i) New diameter based on pipe replacement. (ii) Cost estimates are based on CCI of 15367.24 from the August 2024 ENR.

Alternatives ……………………………………………………………………………………………………………………………………………… U/S
MH ID
D/S
MH ID
Existing Diameter
(inches)
New
Diameter
(inches)
Length
(feet)
Slope
(%)
Pipe Depth
(feet BGL)
Existing
Pipe
Capacity
(mgd)
Future
Pipe
Capacity
(mgd)
Long-Term
Future
PDWF
(mgd)
Long-Term
Future
PWWF
(mgd)
Long-Term
Future DWF
Velocity
(ft/sec)
Open Cut
Cost
Trenchless
Installation
Trenchless
Casing Size
Unit Cost
($/LF)
Total Cost
($)
S83-20 S83-34 31 39 71 0.21 14 13.68 24.47 12.45 13.84 3.20 $1,289 $1,289 $ 91,906 S83-34 S83-18 31 39 160 0.09 14 9.14 16.35 12.45 13.83 3.19 $1,289 $1,289 $ 205,982 Total Baseline Pipe Construction Cost $ 297,888
Total Trenchless Installation Cost $ -
No Jacking Pit $ -
No Receiving Pit $ -
Installation or Adjustment of Weir in Existing Manhole Structure $ - Lateral Reconnection Cost (Approx. 1) $ 500
Modify Existing Manholes Cost (Approx. 9) $ 157,500
Baseline Construction Cost: $ 455,888
Dewatering $ 20,799
Bypass Pumping $ 29,789
Remove & Replace Factor $ 14,894
Traffic Control (20%) $ 59,578
Pavement Restoration (T-trench) $ 6,551
Subtotal: $ 587,499
Mobilization/Demobilization (5% of subtotal) $ 29,374.94 Estimated Construction Cost Subtotal: $ 616,874
Contingencies (30% of construction subtotal) $ 185,062.11 Estimated Construction Cost: $ 801,936
Engineering and Inspection(25% ofconstruction cost) $ 200,484 Estimated Capital Improvement Cost: $ 1,002,000
(Note: Cost estimates are based on August 2024 ENR CCI of 15367.24 for the San Francisco Area) (v)
(vi)

PROJECT COST DETAIL

City may wish to consider evaluating alternatives during preliminary design that would replace or remove the siphons crossing under Hetch Hetchy and San Tomas Aquino Creek, if feasible.

West Valley
College Mission
Campus
Great America Pkwy Great America Pkwy
Mission College Blvd
Our Ladys Way
Great America Pkwy
Great America Pkwy
Miss
ion College Blvd
Freedom Cir
Mission College Blvd
&
&
&
&
&
&
&
& && & & && &
&
&
& &
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
!(!(!(
S83-34
S83-20
S83-18
(31.4 in)
39 in
Legend
±
Figure Exported: 10/15/2024 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2023_TMFigures.aprx Project #: 0012307.00
Map Created: July 2024
0 0.04 0.07 0.14
Miles
Project 13
GAP East Trunk
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project !( Manholes
Project Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wolfe Rd
Creek B
lvd
Miller Ave
G2

UPERTINO

Y V ALE
Tasm
an Dr
N 1st St
M
on
r
oe
St
Kiely Blvd
San To mas Expy
237
G4
San José Mineta
International
Airport
S ANTA
CLARA
- Woodard
~ &Curran
Project 13: GAP East Trunk
Capacity Deficiency Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network Segment’s details are in the next
page
--- I :
➔➔➔ ,.,.,. ➔➔➔ ➔➔➔ T ;;';;';;' .•... ! I ➔➔➔ ;;';;';;'
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-- - . . . - - , , , - . .. - - ... ··• I I T I I T I I I I

30.0 - · -- Non•surcharge
d/D = 1 (backwater

25.0 - - ·· ..
- surcharge)
\ ~ d/D = 2 (throttle r---. - surcharge) 20.0 - ·· ................... ............... ...... ··············-I\ ................ " ......................... .............................................................................................. . ............................ --- ~ ···/- " -----································ -...........__ ································································· 1 I\ ······································ 15.0 - ·· - ---------- ----- ............... ... .......... ... ------ ----~ .. ............. . .. 0 10.0 - , ... , ... .. I••• .. . . •······· . ... , ........ <( C --- ...._
---- 5.0 - ··· ..................... .................. .......... . ................. ..... ............ .... ........ .................. ..... .......... ... ....... ................ . ......... .. ............... I······ ..... ...... ........ ... . ....... ............... ............... . o.o - ··· ..................... .................. .. ....... .. ................. ..... ............ .... ......... .................. ..... ................. ...................... ..... ................. ... ................. .................. .. .... ........ ............... ............... ~ .. "' . 5,0 - ·-- --- -------- . ---- ----------- - ... -------- ---- .. ----- . ... ---- ------ ------ ------- ---------- . . .. -10.0 - ·-- --- -------- . ---- ----------- - ... -------- ---- .. ----- . ... ---- ------ ------ ------- ---------- . ... ---------- °' i. '.... M ~ ~ .. ~ ~
~ '.... ~ !R I;; I)! ~ !:; ~ i. "' N "' ~ "' ,., "' ' ~· .. N M ,;, M -,;, ,;, ,;, ,;, ,;, ,;, ,;, M M M ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, ,;, 0 C 0 C 0 0 0 . 15,0 :;; :;; :;; 51 SI : 51 51 51 51 51 51 51 ffi ffi ffi ffi ffi ffi ffi ffi ffi ffi :;; :;; :;; -:;; :;; :;; :;; I I
1~ 1 13'~ I I I I I 3s'.i2 11

I I I I I I
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79~2
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ft 0 569 11 ,3 236 2 96 2839 3342 4587 518 5381 5863 6343 7304 7515 7724 8251 8858 9328 9796 Link 573.9,1 573-4.1 . . 583-26.1
1=58ifl~ . 583.12.1 ~ 583.9,1 . 583.30,1
~ 593.57,1 . 593-49.1 593-43.1 593.37,1 . 593-27.1
l_m;
.
; • li l~V~P~
. 5103.15.1 5103.11 .1
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le
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n
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g
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(
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ft
)
) 569A 474,9 . ~30A 471.3 . 325A . .
; 17.3 ; ~ ~
- !l!H 208.9 227.6 ~ .. .. 281.3 469.9 468.2
pfc (MGD) 13.00 16.03 . 14,71 15.06 . 14.61 - 9.1 9.38 18.83 . 14.16 . 16.66 . 16.39 . 16.35 19.72 15.84 . 18A1 19.24 21.86 13.10 21.37 . . . 19.14 9.56 19.52 us inv (ft AD) 13.760 12.680 ., 10.170
~ .530 ~ 7A50 7.210 5.590 4,920 3.530 ~ 1.600 1.050 0.190 .0.590 -2.160 ~ ~ - ~ -930 -5.250 -5.380 i . . . . . . . . . .
ds inv (ft AD) 12.680 11.310 ,;, . .970 .750 . ; 7.210 5.950 . 5.11 0 . 3.730 . 2.980 1.050 0.190 .0.210 . • 1 .340 . . -2.340 . . - -5.250 -5.380 -5.920 sure 0.82 0.79 . 0.84 0.93 0.97 1.00 - 0.9 0.85 0.76 0.81 0.82 . 0.95 0.94 0.92 . 2.00 1.00 2.00 . 2.00 1.00 1.00 2.00 0.94 . 1.00 -. 2.00 2.00 0.92 D5 flow (MGD) 13.3 174 13.3081 . . 13.2931 . 13.3 136 . . . 13.3034 . 13.2770 . 13A917 . 13.3924 . 18.9698 18.9485 18.9299 . 18.9708 . . . 19.8493 . . • 19.8406 19.8297 19.8143 D5 velocity (ft/s) 5.006 4.843 . 5.11 8 4.520 . 3.796 . . 5,149 4,171 . 4.091 . 4.008 . 5.604 . 4.344 4.221 4,636 . 4.392 4.388 4,254 4.868 5.807 . . . 3A16 3.909 3.938 Node 573.9 573-4 573. 1 . . . S83-: . . 583.12 583.10 . . 583.30 593.58 593.57 . 593-49 593-43 593.37 . 593.27 593.20 . . . . . . . 5103.15 5103.11 . ground (ft AD) . 3.790 t Q t ~ ~ ~ ~ 16.710 14.500 . . ~ 20 15.830 14.630 . 12.700 12.500 9.790 . 9.5 10 8.3 10 . . e t ~ ~ ~ ~ 12.660 . flood dep (ft) .9.338 •9,227 . . . . -8.71 , . . .7,671 -6.398 . . .7,694 •9.389 -8A13 . .7.531 -8.158 -6.269 . -6.843 -6A72 . . . . . . . . 13,100 . 14,954 .

Project 13: GAP East Trunk
Capacity Deficiency Profile View (Zoomed-in section)
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network

21.0 -

20.0 - ··FP-..,_···:.:_············································································································································································································································································································

19.0 - ·

18.0 - ··
··································· ----=.:.::_ ·············································································································································································································· =-n ····· r-=······=== ············· ~········· ==············· ~········· ~············ .......................................................... ::: ... ::: ... :,,, ... -. ~-----------------··=···=···=···=···=···=···=···=···=···=···=···=···=···=···=··OA-.:'. ···:::::- ···························11 ·········································· ....................... .

17.0 - , ' I•

16.0 - ·· ............................................................................................................................................................................................................................................................................................................................... .

15.0 - ··

14.0 - ·

13.0 - ··

12.0 - , ' I• ::: =:t=~~====.==~-:=--~~---:::--:::--···~·· .. ········.c···~··-··~···~··~···;;;··~··;;···~··~··~···~··;,;···::;··~··:···::;··:··:···:··:···:··:··:···:::··:··:···:::··:···~··:··:···:::··:··:···:··:···~··=··~··~ ··~···~··:···=··:··=···~··=··~···~··:···~·~ ···~··:··~···:··:···~··:··:···~··:··~···:··:···~··:··:···~··:··~···~··:···~··:··:···~··:··:···~··:···j

9.0 8.0

7.0 ft
Link
Conduit mate
width (in)
length (ft)
pfc (MGD)
us inv (ft ADJ
ds inv (ft ADJ
sure
-
DS flow (MGD)
DS velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)
m
"' m
(X)
V1
I
0 S83-23

20.180
-8.788
S83-23.1
156.6

0.97 13.2986

4.195
157
S83-21

17.980
-6.921
S83-21.1
325.4

1.00 13.3136

3.796
482
S83-20

18.110
-7.723
S83-20.1

71.3 13.68

1.00 13.3133

3.807
553
S83-34

19.090
-8.872
159.8

13.3125

3.993
713
S83-18

17.350
-7.498
Project 13: GAP East Trunk
Project Solution Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network Upsizing
Upsizing
Upsizing
Segment’s details are in the
next page
I•
)H • 11 ))) 11 J)l I )J) I I t )JJ I )J) • I ))J • '! • • ))) ~ j ·--·1• --1~• .. l- --)l,J.,,- -•.,),;J,) t- --H>,)-- >-i) .. l+) , ..... ) ... _ , .. -;)>,),;J,)""'""")")"'l- l .... i :~1, ... T,_.,.-,,.,),;J,)_ , __ ,,,) ..l---• --'• .. , ... ,-... 1

30.0 -
?'i.0 - -

20.0 -
a 10.0 -
<{
,J;

5.0 -0.0 -
-5.0 -
-10.0 -
Upsizing
"' 0
Segment's details are in the
next page
I I N ·-
"' 0 CO'::: ... ,-... 0)J-... 0 (\I
O'> ,q-- rr, 1.1"1 ..,, ,,.._ ~J ~ :"';J ...-, •
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ft
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Conduit rncte
w;:.J.h (111)
le·1gth (rt)
plciMG))
us inv (tt ADj
ds irov (['. AD)
sure
DS !low (MCD)
D, v~lori,y (it/<)
Node
ground (ft A~)
floorl d"fl (frj
0 $73-9.1

13.8302
573.9
E
569
S73-4.1

0.79 13.8255
4,8(,7
S73-4 S73·1
~ ,oo a ·9.1/1>

0.81 13.3155
01?
S83-2
2839
SM-12.1
'18.83

7.210

5.950

0.72 13.3619
;,1r;q •I.HG

0.76 S83·12 S83-10

16./ 10
-1.(,!4

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-6.'IB/

0.75 lJ.]605
~.1?0
S83-30.1

16.66 t4.920

13.no

0.76 13.6553
4S87
S83·30 S93-58 -
S93-57.1

16.39 '3530

2.980

0.67 13.6550

14.9W 1,.830 14.bJ0
·/ .9/6 -9.9,'i ·9.U11l
518 5381 5863 6343 6689 7304 75! 5 7724
S93-49.1 S93-43.1 S93-37.1 - 593-27.1

37.6 21.97

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1.050

0.84 17.92-18

12./00
·HA;>;>
S93-43

12.,0U
·9.01?

27.53 1.0SO
C.190

0.82 0.81

17.9215 17.9195
S93-37

9./90
. ,.o;o
-

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17.3735
.1.871

19.52 0.74

17.371,1
:s.qo.1
S103·15 $ (0 3·11

12.t>oU
_., ,_',/1
8 Project 13: GAP East Trunk
Project Solution Profile View (Zoomed-in section)
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network

21.0 -
?0.0 -

19.CI - ..

18.0 -
~ ···············-
·· ~ -·--···············
---,.,--- - ------------~--~====-----====i=i=----
"17.0 -
11>.CI - ...

15.0 - ·············--·
J.: 14.0 -
'13.0 - ·············--·

11.0 -
·10.0 -
fl
I ink
Conduit mate
widlh (in)
length (ft}
pie (MGD)
11s inv (ft /\fl)
ds inv (ft AD}
sure
I)~ flllw (M( ill)
DS velocity (ft/s)
Node
111111md (n Ill>)
flood de (ft)
I I
I) 1.~/
15&.6

15.82 ~:;;cl

0.88 H ./PO~

4.508
SIH-? 1.1

14.61 ~ 0.88
H X-!~.~

4.285
4/l~
S83 20
-0.019
················-
················-
~ll~-? 0.1
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71.3 24.47
~ 6

0.74 F .!l:-!~1

3.)22
-9.090
---------···············---···
F .!H 41

3.) 10
i H
583 18
1 / .3~(>
-7.-192
Project 14: Bunker Hill Lane East
Project No. ……………………………………………………………………………………………………………………………………………… 14 Project ID ……………………………………………………………………………………………………………………………………………… Bunker Hill Lane East Project Location ……………………………………………………………………………………………………………………………………………… E of Great America Pkwy Description ……………………………………………………………………………………………………………………………………………… 107 LF of 8-inch diameter pipe Priority ……………………………………………………………………………………………………………………………………………… 7 Flow Confidence Level……………………………………………………………………………………………………………………………………………… N/A Loads Trigger ……………………………………………………………………………………………………………………………………………… Long-Term Future Loads (LTFL) Design Flow Trigger ……………………………………………………………………………………………………………………………………………… Wet Weather Flow (WWF) Physical Network Trigger ……………………………………………………………………………………………………………………………………………… Unlined Model Network Estimated Capital Improvement Cost ……………………………………………………………………………………………………………………………………………… $301,000 Comments ……………………………………………………………………………………………………………………………………………… Assumptions ……………………………………………………………………………………………………………………………………………… (i) New diameter based on pipe replacement. (ii) Cost estimates are based on CCI of 15367.24 from the August 2024 ENR.

Alternatives ……………………………………………………………………………………………………………………………………………… N.A.

PROJECT COST DETAIL

Bunker Hill Ln
Grea
t America Pkwy
Gre
at America Pkwy
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
& !(
!(
(6 in)
8 in
S93-7 S93-10
Legend
±
Figure Exported: 9/3/2024 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2023_TMFigures.aprx Project #: 0012307.00
Map Created: July 2024
0 0.01 0.02 0.04
Miles
Project 14
Bunker Hill Lane East
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project
!( Manholes
Project Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wo
lfe Rd
Creek Blvd
M
iller Ave
G2

UPERTINO

Y V ALE
Tasm an Dr
N 1st St
M onroe St
K
iely Bl
v
d
San T
o
mas Expy
237
G4
San José Mineta
International
Airport
S ANTA
CLARA
"(
I
f
-
-
II
Woodard
&Curran
Project 14: Bunker Hill Lane East
Capacity Deficiency Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network

11.0 - ·

10.0 -

9.0 8.0

7.0 6.0
0 < 5.0
=

4.0 3.0
---------------·············································································································································································································---- -r---:-:-------::---7 ------ Non-surcharge d/0 = 1 (backwater
surcharge)
d/D :: 2 (throttle
surcharge)
1-1·---------••·--------················ - ••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ······························································································································--------------------1•• .................................... . ..................................................................................................................................................................................................................................................................................................................................... .................................... ············----------- ......................................................... ······························································································································--------------------1••

2.0 - ··· ····················- ..................................... -~·..;c···:.:_··········· ............................................................................................................................................................................................................................. .

1.0 - ··· ....................................................................................................... . o.o
• 1.0 - ,:,
.2.0 9l
I
ft 0
Link 593.13.1
Conduit mate VCP
width (in) 6.0
length (ft) 70A
pfc (MGD) 0.24
us inv (ft AD)
s
ds
ure
inv (ft AD) ~ 1.00
D5flow (MGD) .o.0063
D5 velocity (ft/s) -0.047
Node 593.13
ground (ft AD) 9.213
flood dep (ft) -6.108
,:,
9l
I
70 593.11
9A81
-6.377
593.11.1
VCP

6.0 9 1.8

0.30 ~: l

1.00 0.1826

1.335
I
162
593.10

10.089
.7.090
. .............................................................................................................................................. .

I
269 669
593.10.1 593.1.1

VCP VCP

6.0 12.0
106.S 399.8

0.3 1 1A8
~ C

2.00 1.00
0A080 0A641

3.654 1.822
593.7 593.5

10.627 8.800
.9.035 .7.34 1
Project 14: Bunker Hill Lane East
Project Solution Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network Upsizing

11.0 -
: :
0 - FF··=·····=·····=·····=·····::::: ·····::::: ·····::::: ···••rr••::::: ••••• ::::: ••••• ::: ••••• --:: •••••--:: •••••=: .....: ..... : ..... : ..... T[ . ·=·····=·····=·····=·····=·····=·····=·····=·····=·····=·····=·····n· ·=·····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····=····:::::····:::::····:::::····:::::····:::::····:::::····:::::····=····=····=····=····=····=····=· .. ·=·····--.. ~·····~····=·······

8.0 7.0

6.0 ~ s.o

4.0 .................................... ................................................ . ................ ,. --------<·············· ............................................................................................................................................................................................................................

3.0 2.0 - ··· ···············-·····
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7 ..................................... \ ..............................................................................................................................................................................................................................

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. 1.0 - ~ ~
~ m ~ m .2.0 --i1
i----------",1'--------------"i1---------------'r-1 -------------------------------------------------------+-- ft 0 70 162 269 669 Link 593.13.1 593.11.1 593.10.1 593.7.1
Conduit mate VCP VCP VCP VCP
width (in) 6.0 6.0 8.0 12.0
length (ft) 70A 91.8 106.S 399.8
pfc (MGD) 0.24 0.30 0.66 1A8
us inv (ft AD)
~ ~: l = ds inv (ft AD) C sure 0.24 0.81 0.58 1.00
D5 flow (MGD) .0.0000 0.1784 0A023 0A496
D5 velocity (ft/s) -0.000 1.619 3.051 1.870
Node 593-13 593-11 593-10 593-7 593-5
ground (ft AD) 9.213 9A81 10.089 10.627 8.800
flood dep (ft) -6.938 -7AS0 -8.396 -9.717 -8.084
Project 15: Lafayette Street
Project No. ……………………………………………………………………………………………………………………………………………… 15 Project ID ……………………………………………………………………………………………………………………………………………… Lafayette Street Project Location ……………………………………………………………………………………………………………………………………………… N of Calle del Mundo to S of Great America Wy Description ……………………………………………………………………………………………………………………………………………… 2290 LF of 42 to 48-inch diameter pipe Priority ……………………………………………………………………………………………………………………………………………… 3 Flow Confidence Level……………………………………………………………………………………………………………………………………………… 2 Loads Trigger ……………………………………………………………………………………………………………………………………………… Long-Term Future Loads (LTFL) Design Flow Trigger ……………………………………………………………………………………………………………………………………………… Wet Weather Flow (WWF) Physical Network Trigger ……………………………………………………………………………………………………………………………………………… Unlined Model Network (UMN) Estimated Capital Improvement Cost ……………………………………………………………………………………………………………………………………………… $7,515,000 Comments ……………………………………………………………………………………………………………………………………………… Assumptions ……………………………………………………………………………………………………………………………………………… (i) New diameter based on pipe replacement. (ii) Cost estimates are based on CCI of 15367.24 from the August 2024 ENR.

Alternatives ……………………………………………………………………………………………………………………………………………… N.A.

PROJECT COST DETAIL

PROJECT DESCRIPTION
(i) Pipes are listed in order from upstream to downstream. (ii) A 50/50 flow split was assumed at the Lawrence/Homestead gate structure which splits flow between the eastern sewer on Homestead Rd or the northern sewer on Lawrence Expwy. (iii) Project would also include some re-sloping of the existing pipe segments from manhole S104-22 to S104-14; per record information, the existing slope is minimal at approximately 0.02 percent.
(iv) Lined model network includes assumed future lining of Lafayette Trunk. 237
237
Great America Way
Great America Pkwy
Lafayette St
Mountain View Alviso Rd Mountain View Alviso Rd
Stars
and
Stri
pes Dr
Great America Pkwy
Lafayette St
Santa Clara Golf
and Tennis Club
P
inefield Rd
Guadalupe River
Stars and Stripes Dr
Calle del Mundo
Renaissance
Dr
Lafayette St
Lic
k
Mil
l
B
l
v
d
Lick Mill Station
Westbound
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!(
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!(
(34.2 in) 48 in
(39.9 in) 48 in
(34.2 in) 42 in
(40.3 in) 48 in (40.3 in) 48 in
(40.3 in) 48 in
S104-8
S104-29
S104-28
S104-22
S104-17
S104-16
S104-14
Legend
±
Figure Exported: 9/10/2024 By: nbarreralopez Using: \\woodardcurran.net\shared\Projects\0012307.00 Santa Clara CA Sewer Master Plan Update\wip\C. GIS\3. ArcGIS Pro\SantaClaraSewerMasterPlan2023_TMFigures.aprx Project #: 0012307.00
Map Created: July 2024
0 0.04 0.07 0.15
Miles
Project 15
Lafayette St
Santa Clara Sewer Master
Plan Update
Capacity Improvement Project !( Manholes
Project Sewers
& Other Modeled Sewers
(8-in)
10-in
(Existing Diameter)
Proposed Diameter
S Wolfe Rd
Creek B
lvd
Miller Ave
G2

UPERTINO

Y V ALE
Tasm
an Dr
N 1st St
M
on
r
oe
St
Kiely Blvd
San To mas Expy
237
G4
San José Mineta
International
Airport
S ANTA
CLARA
&
&
Pipes will be resloped and upsized
- Woodard
&Curran
Project 15: Lafayette Street
Capacity Deficiency Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network T ))) • T ))) • ))) T • TT ))) • T ))) • ))) • ))) T ))) • ))) • ))) • T ))) • ))) Ji

9.0 - -- Non-surcharge

7.0 - ··· ---------------· --------------------- ... ........... ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- d/D = 1 (backwater ---------------- - surcharge)

5.0 - ·· ................ ..................... ................ ...... .. .................... . .. ................ .......................... .............................................................................................................. d/D = 2 (throttle ................ - surcharge)

3.0 - · .. . \

1.0 - ··· ---------------· --------------------- --------------- ------ --------------------· ... ---------------- -------------------------- --------------------------- --------------------------- --------------------------- --------------------------- ------- --------------- ------------------------· 0 <
,t:'. ·1.0 - - ------- --------------------- --------------- - ------ --------------------- ... ---------------- -------------------------- --------------------------- --------------------------- --------------------------- . --------------------------- ------- --------------- ------------------------- ~ ·3.0 - · - - ·5.0 - --· ·-----------------· ... -----------------· .. -------------------------- ------------------- --------------------------- --------------------------- ------- --------------- ------------------------· ·7.0 - ·· ----------------- ... ----------------------- ----------------- -------- .. - ---------------------- ----- ------- - ---------- --------------------- N ... "' "' ... a,
-9.0 - m sr m ".' ';' m m N
.;, sr ... ... ... ... ... ... ... "' 0 0 0 0 0 0 0 a, a, .:;; .:;; .:;; ·11.0 V, V, V, V, V, V,

I I I I
10~51 I I I I
ft 0 274 680 944 1495 1857 2272 2708 3134 3569 3997 4147 4397 4797 Link S95-13.1 - S95-1.1 S104-42.1 - - S104-35.1 - S104-31.1 S104·29.1 S104·28.1 S104·22.1 S104-17.1 S104-16.1 - S104-8.1 S114-13.1 Conduit mate
~I 1-:il~I ~ ~ ~ ; C RCP C CP C RCA CP RCP RCP RCP RCP RCP width (in) il0.3 il0.3 il0.3
length (ft) 273.5 343.7 263.9 131.1 - 336.8 - 267.7 415.6 35.8 4- - 26.0 1435.0 4-28.0 1 - -

50.0 250.0 400.0 .. pfc (MGD) 16.39 - 16.36 16.53 16.47 -- 16.38 -- 16.75 16.51 14.53 8.18 8.18 22.17 22.70 21.53 21.98 us inv (ft ADJ - - - ~
-3.681 ·10.320] . ·4.320 -4.970 . . -5.882 . -6.700 • 7.230 -8.030 -8.680 ·8.764 ·8.850 ·9.720 i 9.960, ds inv (ft ADJ -4.200 . ·4.970 -5.479 . . -6.520 . -7.230 ·8.030 -8.680 ·8.764 -8.850 ·9.470 ·9.960 ·10.320 ·10.920 sure 0.79 -- 0.95 1.00 1.-
00 -- 1.00 - 1.00 1.00 1.00 2.00 0.97 0.79 0.87 0.86 0.79 DS flow (MGD) 10.3970 - 10.4451 10.4600 - - 13.7705 - 13.8106 14.3059 14.3057 21.2761 21.2757 21.2754 . 21.5626 21.5625 DS velocity (ft/s) 3.969 - 3.805 3.466 3.501 - 4.007 - 3.715 3.329 3.330 3.733 4.422 5.133 4.223 4.234 4.570 Node . - S95·1 S104·42 . - - . . S104·29 S104·28 S104-22 S104·17 S104-16 S104-14 S104·8 S114·13 - ground (ft ADJ a ~ [llil 7.240 [[7s]l a ~ ~ ~ 5.420 5.160 2.960 2.460 1.760 @.86ol ~ 1.540 2.420 flood dep (ft) . - - -9.510 -9.219 - -9.386 ·9.577 ·9.554 -9.089 -9.418 • 7.832 -7.952 ·7.946 ·11.693 -8.737 -9.042 - Project 15: Lafayette Street
Project Solution Profile View
Model Run Scenario: Wet Weather, Long-Term Future Loads, and Lined Model Network Upsizing
Upsizing and
Re-sloping
T ))) ))) • ))) T ))) • T ))) • ))) • ))) T ))) • ))) • ))) • T >>> • )))

9.0 7.0 ··············· ~·······rr=- ·· - ·=rr ·······,·· rm······:.:::.::.:: ·······==······=,······~·······;::::.: ··············································································································································································································

5.0 1-················ 1- ••••••••••••••••••••••••••••••••••••. . . . . . . . . . . . . . . . . . . . . > ·.. . .......... ::: .. ~ ... :rr.. ::: .. -::- ... ::: .. -::- ... ::: .. :::c ... ::: .. 7." .."' · · . .,., .,Y-.._ ................................................ .

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ft 0
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274
I
680
I
10~51 I 14~5 I I
944 1857 2272 2708
Link
Conduit mate
width (in)
length (ft)
pfc (M GD)
us inv (ft ADJ
ds inv (ft ADJ
sure
DS flow (M GD)
DS velocity (ft/s)
Node
ground (ft AD)
flood dep (ft)

16.39 - 3.681
-4.200

0.60 10.4065

4.062
343.7

16.36 -4.320
-4.970

0.62 10.4578

3.879
S95-1
@.2201
263.9

16.53 -4.970
-5.479

0.68 10.4735

3.548
S104-42
-10.431

0.71 3.671
336.8

16.38 -5.882
-6.520

0.71 13.7963

4.443
267.7

16.75 -6.700
-7.230

0.70 13.8367

4.705
S104-29
-10.655
415.6

28.53 7.230
-8.030

0.71 14.3339

3.424
-10.695
S104-28.1
C

48.0 ~ 35.8

35.86 -8.030
-8.680

0.76 14.3304

2.448
-8.611
S104-22.1
RCP

48.0 426.0

27.69 -8.680
-9.059

0.75 25.4071

3.882
3134
S104-17
-8.508
S104-17.1
RCP

27.69 -9.059
-9.446

0.75 25.4049

3.947
3569
S104-16
S104-16.1
RCP

8.0 428.0

27.69 -9.446
-9.827

0.74 25.4030

4.168
3997 4147 4397
RCP

48.0 150.0

27.69 0.73
S104-8.1
RCP
-
250.0

21.53 -9.960

0.87 21.7524
4,742 4.237
S104-14 S104-8 S114-13
@.860]
-11.740
S114-13.1
;
400.0

21.98 10.320
-10.920

0.80 21.7518

4.579
4797
woodardcurran.com
Woodard
&Curran

City Council and Authorities ConcurrentDecember 9, 2025

City Council and Authorities Concurrent
December 9, 2025