SAFER Bay Project Len Materman, Executive Director San - - PowerPoint PPT Presentation

Len Materman, Executive Director

SAFER Bay Project

San Francisquito Creek Joint Powers Authority

San Francisquito Creek area floodplains and projects

East Palo Alto Palo Alto

Menlo Park

= Creek floodplain only (3,500 parcels) = Bay floodplain only with 3’ Sea Level Rise (over 2,700 parcels) = Overlap of creek and Bay floodplains (2,200 parcels) Approximate number of parcels in the 100-year floodplains

January 2015 king tide

North of Hwy. 84 near Dumbarton Bridge

Infrastructure Assets

• Key highways
• Regional wastewater treatment plant
• Regional electrical facility
• Regional postal facility
• Regional airport
• Corporate HQ & new development

San Francisco Bay

100-year tide (11’) + 2’ freeboard + 3’ SLR At least 13’ now, Enable 16’ = <13’

Elevation

= 13-15.9’ = >15.9’

Menlo Park East Palo Alto Palo Alto

S.F. Bay LIDAR of the mid-Peninsula

SAFER Bay Project

Protect 5,000 properties & major infrastructure, restore marshes, connect communities through trails

Two counties and three cities. 11 miles of shoreline with 11 reaches that include 24 options. Each alternative includes all reaches and only one option per reach. Construction may occur in two phases (1 FEMA floodplain, 2 SLR) and may be geographically or temporally separable.

• Reduce risk of coastal flooding and remove properties from FEMA

100-year floodplain (including freeboard) and 3 feet of Sea Level Rise.

• Utilize marshes for flood protection in a way that restores and sustains

marsh habitat in coordination regional efforts.

• Expand opportunities for recreation and community connectivity in

coordination with regional and local efforts.

• Minimize future maintenance requirements.
• Create partnerships with entities whose assets could be protected.
• Ensure objectives can be met regardless of neighboring action/inaction.

SAFER Bay Project Objectives

• Cost
• Utility infrastructure
• Viewshed
• Tidal marsh wetlands
• Endangered species habitat
• Roads, trails & flight path
• Interior (stormwater) drainage
• Property within and adjacent to levee alignment
• Hazardous waste and landfill sites

SAFER Bay Project Constraints

Public Draft Feasibility Report

SAFER Bay Project

Strategy to Advance Flood protection, Ecosystems and Recreation along San Francisco Bay

East Palo Alto and Menlo Park

(Task Order 1)

October 2016 San Francisquito Creek Joint Powers Authority

615 B Menlo Avenue Menlo Park, CA 94025

Available at sfcjpa.org

REACH 6* REACH 1 REACH 2** REACH 3 REACH 4 REACH 5** REACH 7** REACH 8** REACH 9**

SAFER Bay

Feasibility Report Project Reaches and Options

¯

2,000 Feet Reach 1, Option 1 Reach 1, Option 2 Reach 2, Option 1 Reach 2, Option 2 Reach 3, Option 1 Reach 4, Option 1 & 2 Reach 5, Option 1 Reach 5, Option 2 Reach 5, Option 3 Reach 5, Option 4 Reach 6, Option 1 Reach 6, Option 2 Reach 7, Option 1 Reach 7, Option 2 Reach 8, Option 1 Reach 8, Option 2 Reach 9, Option 1 Reach 9, Option 2

1 inch = 2,000 feet PROJECT AREA * Reach 6 has been merged into Reach 5 ** Dropped Options shown in Grey

SAFER Bay Public Draft Feasibility Report for EPA & MP

19 options over 9 reaches covering 7 miles

• f shoreline. Each alternative includes all

reaches and only one option per reach.

SAFER: Screening options and evaluating alternatives

• Multiple options were developed in each project reach (or area).
• Each option was screened for how well it satisfies project
• bjectives or violates constraints.
• Remaining options in each reach were then combined into four

project-wide alternatives (low cost, habitat, recreation, and combination of objectives or “optimized alternative”) that maximize key objectives.

• Alternatives were then scored against four factors:

construction cost and constructability, ecosystem restoration,

• peration and maintenance, and recreation.
• The optimized alternative ranked highest.

Alternatives Options by Reach Reach 1 2 3 4 5 62 7 8 9 1 Lowest Cost Op 1 Op 1 Op 1 Op 1 Op 1 X Op 2 Op 2 Op 1 2 Restoration1 Op 2 Op 1 Op 1 Op 2 Op 4 X Op 2 Op 2 Op 1 3 Recreation Op 2 Op 1 Op 1 Op 2 Op 4 X Op 2 Op 2 Op 1 4 Optimized Op 1 Op 1 Op 1 Op 2 Op 4 X Op 2 Op 2 Op 1

X Not applicable

PUBLIC DRAFT FEASIBILITY REPORT EAST PALO ALTO and MENLO PARK 2365 Iron Point Road, Suite 300, Folsom, CA P 916-817-4700 hdrinc.com 40

Table 9. Feasibility Evaluation Factors and Consideration Scoring Metrics

Feasibility Scoring Matrix and Calculation

Low Cost Restoration Recreation Optimized Evaluation Factor Wt % Considerations Wt% Alt 1 Alt 2 Alt 3 Alt 4 Construction Cost and Constructability 30% Construction Cost 50% 2.6 2.0 2.0 2.5 Lifecycle Cost 5% 4.4 3.9 3.9 4.3 Construction Schedule 5% 3.0 2.8 2.8 2.9 Construction Considerations and Access 20% 3.6 3.8 3.8 3.6 Real Estate Acquisition 20% 3.0 3.0 3.0 3.0 3.0 2.7 2.7 2.9 Operation and Maintenance 20% O&M Cost 30% 4.4 3.9 3.9 4.3 Debris and Sediment Management 30% 4.3 3.8 3.8 4.1 Passive/Active 20% 3.3 3.3 3.3 3.3 Flood Fighting Accessibility 20% 3.1 2.6 2.6 2.9 3.9 3.5 3.5 3.7 Restoration 30% Acres of Enhanced Tidal Marsh Habitat 40% 1.5 1.8 1.8 1.8 Interagency Coordination 20% 3.0 3.4 3.4 3.1 Potential Impacts/Mitigation Requirements 40% 4.1 4.5 4.5 4.6 2.9 3.2 3.2 3.2 Recreation 20% Bay Trail 50% 2.3 2.3 2.3 2.4 Interpretive/Viewing 50% 3.3 3.6 3.6 3.4 2.8 2.9 2.9 2.9 Total Alternative Score 100% 3.1 3.0 3.0 3.2 Overall Ranking Order: 2 3 3 1

% % % % % %

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EXISTING BAY FRONT CANAL OPTION 2 LEVEE AND FLOOD WALL WITH FLOOD GATE AT

• E. BAYSHORE RD

OPTION 1 FLOOD WALL WITH FLOOD GATE AT HAVEN AVE WATER CONTROL STRUCTURE EXISTING CULVERT 920' WATER CONTROL STRUCTURE 3,120' 8 ' WATER CONTROL STRUCTURE ATHERTON CHANNEL

SECTION B SECTION A M E N L O P A R K R E D W O O D C I T Y R E D W O O D C I T Y MOBILE HOME PARKS (UNINC)

• E. BAYSHORE RD

Pond

Marsh Road area

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EXISTING GATE STRUCTURE

Bedwell Bayfront Park

8 ' CHRYSLER PUMP STATION JURISDICTIONAL WETLANDS EXISTING BAY FRONT CANAL EXISTING GATE STRUCTURE WATER CONTROL STRUCTURE WATER CONTROL STRUCTURE 1,400' 1,160' EXISTING CULVERT

SECTION A SECTION B

WATER CONTROL STRUCTURE

Pond R4 Pond R3 Pond R5 Pond S5 Pond

Tying into Bedwell Bayfront Park

% % 4,200'

S E C T I O N

Pond R3 Pond S5

North of Hwy. 84

% % % % % %

RAVENSWOOD SLOUGH OPTION 1 FLOODWALL OPTION 2 LEVEE RAVENSWOOD PUMP STATION

Facebook Campus

1,540' 940' 1,760'

SECTION

Pond R3

Facebook HQ

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1,700' OPTION 4 CONSTRUCT LEVEE OUTBOARD OF POND SF2 1,280' 1,100' 780' 3 , 1 2 ' 1 , 9 1 ' 360' 2,115' 2,105' 955' OPTION 1 CONSTRUCT LEVEE FLOOD GATES OPTION 1 RAILROAD FLOOD GATE TIDE GATE 4,300' 2 4 ' EXTEND RAVENSWOOD PUMP STATION OUTFALL BENEATH NEW LEVEE TIDE GATE 1 , 8 ' 2,160' OPTION 4 RAILROAD FLOOD GATE 1340' 400' 1,090' 1,050' FLOODWALL BIKE PATH FLOODWALL SFPUC RAVENSWOOD STATION OPTION 3 (DROPPED) LEVEE/FLOODWALL WRAPPED UNDERNEATH HWY 84 OPTION 2 (DROPPED) RAISE HWY 84

SECTION C SECTION B SECTION D SECTION A

CA SR 84

Pond R1 Pond SF2 Pond R2

Dumbarton Bridge Pop-up floodwall Pink option:

• Protects all of Hwy 84
• Protects SFPUC pipe
• Enables tides in R1, R2, SF2

Green option:

• More cost effective
• Enables tides in R1, R2

% % % % % % % %

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1,470' WATER CONTROL STRUCTURE 960' 600' 1,240' OPTION 2 LEVEE WATER CONTROL STRUCTURE WATER CONTROL STRUCTURE RAVENSWOOD OPEN SPACE PRESERVE 391 DEMETER STREET COOLEY LANDING

EPA properties Existing path Fordham St. Cooley Landing

Coordination with potential loop road, development of parcels north of Bay Road, and planned Bay Road improvements

% % % %

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1,080' 1,080' OPTION 2 SETBACK LEVEE WATER CONTROL STRUCTURE

S E C T I O N

LAUMEISTER MARSH RAVENSWOOD OPEN SPACE PRESERVE COOLEY LANDING

EPA properties Existing levee trail Runnymede St. Cooley Landing

Coordination with development of parcels south of Bay Road and planned Bay Road improvements

% %

2,800 O'CONNOR PUMP STATION REPLACE EXISTING STORMWATER OUTFALL OPTION 1 LEVEE

SECTION

FABER TRACT RUNNYMEDE DRAINAGE DITCH

Existing levee trail Runnymede St. San Francisquito Creek EPA side

Pond R1 Pond R2 Mosley Tract HWY 84

300 ft 3 f t

SF2

• Legend

Proposed Levee Option 2 Proposed Tidal Marsh Restoration (613.2 ac) Proposed Tidal Marsh Enhancement (54.2 ac) Potential Future Tidal Marsh Restoration (52.9 ac) Proposed Transition Zone Habitat - 30H : 1V slope (49.2 ac) Cooley Landing Marsh Laumeister Marsh Faber Marsh

Figure 30- Restoration Alternative - Proposed Tidal Marsh Enhancement

Legend

• r Tidal Marsh Enhancement

Restoration Opportunities

SAFER Bay’s anticipated schedule

• 2016 – Jan. 2017: Engage stakeholders, public presentations
• February 2017: Select preferred alternative, begin EIR of

alternatives and design preferred alternative

• Late 2017: Public Draft of EIR released
• Late 2018: Complete EIR & design
• January 2019: Apply for permits
• 2019: Secure construction & maintenance funding

Agency and public input

• City Council meetings
• League of Women Voters public meetings
• Public EIR Scoping meetings
• Public Draft EIR meetings
• City staff review of administrative drafts
• Salt Pond Restoration Project Management Team
• Meetings with regulatory agencies
• BCDC working group

SAFER Bay’s SMC-side funding approach

Diverse assets protected require diverse funding sources

Planning and design funding as of Dec. 2016 ($2,000,000)

• State of CA ($1.32M) – Dept. Water Resources, Coastal Conservancy
• Cities of East Palo Alto and Menlo Park
• U.S. Fish & Wildlife Service
• Facebook, Inc.

Construction funding (feasibility level est. $90-116M) potential sources

• State of California, federal government
• S.F. Bay Restoration Authority
• Private sector
• Special tax or assessment district
• Community-wide aggregated flood insurance

Reach 10 Reach 11

Mayfield Slough Palo Alto Duck Pond San Francisquito Creek Pond A1 101 Coast Casey Forebay Charleston Slough Pond A A d

• b

e C r e e k Pond B Barron Creek Adobe Creek Palo Alto Duck Pond Matadero Creek 101 REGIONAL WATER QUALITY CONTROL PLANT FLOOD CONTROL BASIN EMILY RENZEL WETLANDS BYXBEE PARK HILLS HOOKS ISLAND HARRIET MUNDY MARSH TIE TO MOUNT VIEW LEVEE OPTIONAL FLOOD GATES EXISTING FLOOD GATES MAINTAIN ACCESS TO PARKING LOT MAINTAIN AIRPORT ACCESS

• E. Bayshore Road

PALO ALTO OPERATIONS AND MAINTENANCE FACILITY PALO ALTO AIRPORT

MOUNTA MENLO PARK PALO ALTO AST PALO ALTO

ABER RACT PALO ALTO GOLF COURSE

PALO ALTO

OOD GATE FLOOD GATE

A closer look at Palo Alto

Thank you

San Francisquito Creek Joint Powers Authority

Len Materman, Executive Director

Floodwalls New levee set back into golf course Degrade Bay levee

San Francisquito Creek divides and connects SAFER

S.F. Bay-Highway 101 Project – Key Features & Benefits

Widen creek channel and create marshland to protect previously flooded people and property from SF Bay to Hwy. 101 against the maximum possible creek flow during an extreme tide with 3 ft. of Sea Level Rise

Enhance marsh levee Enhance public experience

Excavate sediment and create marsh transition zones

Constraints of a project in the middle of SAFER

Restrictions on work due to endangered species

No construction in creek

• Oct. 15-June 15 every year

No construction

• Feb. 1-Aug. 31, 2016

No construction zone:

• Feb. 1-Aug. 31 every year

First construction year (2016) is restriction free between 9/1 – 10/15