CITY OF PALO ALOTO MATADERO CREEK RENATURALIZATION
Transcript of CITY OF PALO ALOTO MATADERO CREEK RENATURALIZATION
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CITY OF PALO ALOTO
MATADERO CREEK RENATURALIZATION
December 5, 2019 // NVCAP Working Group Meeting
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Presentation Overview
• Project Status Update • Planning Outcomes • Design Alternatives • Discussion • Aesthetics
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Project Completion
• Design Planning – 90%
• Site Assessment – 100%
• Define Alternatives – 80%
• Hydraulic Modeling – 60%
• Site Concept Design – 35%
• Coordination - Ongoing
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• Poor habitat • Poor aesthetics • No public access • No geomorphic function
Problems
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• NVCAP • Redevelopment of 340 Portage • City acquisition of 3350 Birch
Opportunities
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• Beautify the creek corridor • Create public access and
connection to the creek • Create habitat • Provide mitigation planting
Objectives
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• Real estate • Flood conveyance • Public safety • Groundwater plume • Valley Water easement • Maintenance access • Maintenance cost • Channel stability • Bridge conveyance • Provide mitigation planting • Other city and public intereste
Constraints
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Alternative #0: No Action
• Lowest cost • No improvement
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Alternative #1:
• Work within boundaries of current SCVWD easement (60 ft)
• Lambert Ave to Park Blvd • Earthen channel bottom • Vertical sheet pile or concrete walls • Riparian plantings • Floodwalls to mitigate increase in
100-year flood WSEL • Public access
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Alternative #1
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Alternative #2:
• Provide access, form and function, with limited scope
• Lay left bank back, transitioning from vertical to 3:1 (H:V)
• Add walking paths and public access • Same bottom width as existing • Ornamental plantings • Low-flow channel meanders • Earthen channel bottom • Floodwalls to manage flood risk
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Alternative #2
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Alternative #2A
• Same as Concept #2, but expand to include same approach in Boulware Park
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Alternative #2A
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Alternative #3
• Maximum ecological function • Vertical walls • Roughly 3.5 times existing width • Geomorphic bankfull meanders
from wall to wall • New maintenance access ramps • Public walking trail • Replace Lambert Bridge and Park
Blvd Bridge • Acquire properties between Lambert
and Park
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Alternative #3
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Alternative 1: Hydraulic Modeling, 1% Chance Event
Railroad
Park Blvd. Lambert Ave.
El Camino Real
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Next Steps
• Refinement of alternatives • Hydraulic modeling of refined
alternatives • Coordination with Valley Water and
Resource Agencies • Documentation
Plan View of All Concepts
EXISTING ESTIMATED GROUNDWATERTOXIC PLUME BOUNDARYNOTE: DATA TAKEN FROM
WHATSDOWN.TERRADEX.COM
PROPOSEDSHEET PILE WALL EXISTING CONCRETE
WALL
EXISTINGSCVWD ACCESSRAMP
PROPOSED SHEET PILE WALL
EXISTING CONCRETEWALL
MATADERO CREEKCENTERLINE WITH
EARTHEN BOTTOM
PROPOSED PEDESTRIAN/BIKE PATH
PROPOSED PLANTINGS
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
PROPOSED SCVWDMAINTENANCEACCESS
EL C
AMIN
O R
EAL
LAMBERT AVENUE
PARK
BO
ULEV
ARD
ASH
STRE
ET
CHESTNUT AVENUE
ASH
STRE
ET
BOULWARE PARK
SCVWD EASEMENTBOUNDARY
CITY OF PALO ALTOMATADERO CREEK
RE-NATURALIZATIONFEASIBILITY STUDY
PALO ALTO,CALIFORNIA
CONCEPT 1PLAN VIEW
DATE: DECEMBER 2019FIGURE BY: ACSIMAGE SOURCE: AUTOCAD ROADS MAP
L:\Acad 2000 Files\29000\29113\CAD\dwg\29113_CONCEPT-1.dwgPath:
N
SCALE: 1 " = 100'
0 100
EXISTING ESTIMATED GROUNDWATERTOXIC PLUME BOUNDARYNOTE: DATA TAKEN FROM
WHATSDOWN.TERRADEX.COM
PROPOSEDSHEET PILE WALL EXISTING CONCRETE
WALL
EXISTINGSCVWD ACCESSRAMP
PROPOSED SHEET PILE WALL
EXISTING CONCRETEWALL
MATADERO CREEKCENTERLINE WITHEARTHEN BOTTOM
PROPOSED PEDESTRIAN/BIKE PATH
PROPOSED PLANTINGS
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
PROPOSED SCVWDMAINTENANCEACCESS
EL C
AMIN
O R
EAL
LAMBERT AVENUE
PARK
BO
ULEV
ARD
ASH
STRE
ET
CHESTNUT AVENUE
ASH
STRE
ET
BOULWARE PARKFR
Y'S
SCVWD EASEMENTBOUNDARY
CITY OF PALO ALTOMATADERO CREEK
RE-NATURALIZATIONFEASIBILITY STUDY
PALO ALTO,CALIFORNIA
CONCEPT 2PLAN VIEW
DATE: DECEMBER 2019FIGURE BY: ACSIMAGE SOURCE: AUTOCAD ROADS MAP
L:\Acad 2000 Files\29000\29113\CAD\dwg\29113_CONCEPT-2.dwgPath:
N
SCALE: 1 " = 100'
0 100
EXISTING ESTIMATED GROUNDWATERTOXIC PLUME BOUNDARYNOTE: DATA TAKEN FROM
WHATSDOWN.TERRADEX.COM
PROPOSEDSHEET PILE WALL EXISTING CONCRETE
WALL
EXISTINGSCVWD ACCESSRAMP
PROPOSED SHEET PILE WALL
EXISTING CONCRETEWALL
MATADERO CREEKCENTERLINE WITHEARTHEN BOTTOM
PROPOSED PEDESTRIAN/BIKE PATH
PROPOSED PLANTINGS
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
PROPOSED SCVWDMAINTENANCEACCESS
EL C
AMIN
O R
EAL
LAMBERT AVENUE
PARK
BO
ULEV
ARD
ASH
STRE
ET
CHESTNUT AVENUE
ASH
STRE
ET
BOULWARE PARK
FRY'
S
SCVWD EASEMENTBOUNDARY
PROPOSEDSCVWD ACCESS
RAMP
MATADERO CREEKCENTERLINE WITHEARTHEN BOTTOM
PROPOSED SHEET PILE WALL
PROPOSED PEDESTRIAN/BIKE PATH
CITY OF PALO ALTOMATADERO CREEK
RE-NATURALIZATIONFEASIBILITY STUDY
PALO ALTO,CALIFORNIA
CONCEPT 2APLAN VIEW
DATE: DECEMBER 2019FIGURE BY: ACSIMAGE SOURCE: AUTOCAD ROADS MAP
L:\Acad 2000 Files\29000\29113\CAD\dwg\29113_CONCEPT-2A.dwgPath:
N
SCALE: 1 " = 100'
0 100
EXISTING ESTIMATED GROUNDWATERTOXIC PLUME BOUNDARYNOTE: DATA TAKEN FROM
WHATSDOWN.TERRADEX.COM
PROPOSEDSHEET PILE WALL
EXISTINGSCVWD ACCESS
RAMP
PROPOSED SHEET PILE WALL
EXISTING CONCRETEWALL
MATADERO CREEKCENTERLINE WITHEARTHEN BOTTOM
PROPOSED PEDESTRIAN/BIKE PATH
PROPOSED PLANTINGS
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
MATADERO CREEKCENTERLINE WITH
CONCRETE BOTTOM
PROPOSED SCVWDMAINTENANCEACCESS
EL C
AMIN
O R
EAL
LAMBERT AVENUE
PARK
BO
ULEV
ARD
ASH
STRE
ET
CHESTNUT AVENUE
ASH
STRE
ET
BOULWARE PARK
FRY'
S
SCVWD EASEMENTBOUNDARY
PROPOSEDSCVWD ACCESS
RAMP
MATADERO CREEKCENTERLINE WITHEARTHEN BOTTOM
PROPOSED SHEET PILE WALL
PROPOSED PEDESTRIAN/BIKE PATH
CITY OF PALO ALTOMATADERO CREEK
RE-NATURALIZATIONFEASIBILITY STUDY
PALO ALTO,CALIFORNIA
CONCEPT 3PLAN VIEW
DATE: DECEMBER 2019FIGURE BY: ACSIMAGE SOURCE: AUTOCAD ROADS MAP
L:\Acad 2000 Files\29000\29113\CAD\dwg\29113_CONCEPT-3.dwgPath:
N
SCALE: 1 " = 100'
0 100
60'
~85'
100'
CONCEPT #0: NO ACTION ALTERNATIVE (30FT WIDTH)
CONCEPT #1: SCVWD EASEMENT ONLY (60FT)· WITHIN BOUNDARIES OF CURRENT SCVWD EASEMENT· EARTHEN CHANNEL BOTTOM· VERTICAL SHEET PILE WALLS· RIPARIAN PLANTINGS· FLOODWALLS TO MITIGATE INCREASE IN 100-YEAR FLOOD WSEL· PUBLIC ACCESS
CONCEPT #2: SAN LUIS OBISBO-STYLE IN PARKING LOT (~85FT)· OPTIMIZE ACCESS, FORM AND FUNCTION, WITH LIMITED SCOPE· LAY LEFT BANK BACK, TRANSITIONING FROM VERTICAL TO 3:1 (H:V) WITH TERRACES· ADD WALKING PATHS AND PUBLIC ACCESS· SAME BOTTOM WIDTH AS EXISTING· ORNAMENTAL PLANTINGS· LOW-FLOW CHANNEL MEANDERS· EARTHEN CHANNEL BOTTOM· FLOODWALLS TO MANAGE FLOOD RISK
CONCEPT #2A: SAN LUIS OBISBO-STYLE FROM CHESTNUT TO PARK BLVD (~85FT)· SAME AS CONCEPT #2, BUT EXPAND TO INCLUDE SAME APPROACH BOULWARE PARK
CONCEPT #3: CHANNEL MIGRATION ZONE FROM CHESTNUT TO PARK BLVD (100FT)· MAXIMUM FORM AND FUNCTION· VERTICAL SHEET PILE WALLS· ROUGHLY 4 TIMES EXISTING WIDTH· GEOMORPHIC BANKFULL MEANDERS FROM WALL TO WALL· NEW MAINTENANCE ACCESS RAMPS· PUBLIC WALKING TRAIL· REPLACE LAMBERT BRIDGE AND PARK BLVD BRIDGE· ACQUIRE PROPERTIES BETWEEN LAMBERT AND PARK
SHEET PILE FLOODWALL SHEET PILE FLOODWALL
SHEET PILE FLOODWALL SHEET PILE FLOODWALL
SHEET PILE FLOODWALLSHEET PILE FLOODWALL
MAINTENANCEACCESS
MAINTENANCEACCESS
MAINTENANCEACCESS
SHEET PILE WALL
CITY OF PALO ALTOMATADERO CREEK
RE-NATURALIZATIONFEASIBILITY STUDY
PALO ALTO,CALIFORNIA
SECTION VIEWS
DATE: DECEMBERR 2019FIGURE BY: ACS
L:\Acad 2000 Files\29000\29113\CAD\dwg\29113_SECTIONS.dwgPath:
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