150519_ExecSum_FINAL

SILICON VALLEY 2.0
Climate Adaptation Guidebook
EXECUTIVE SUMMARY
County of Santa Clara Office of Sustainability
29 MAY 2015

i-2 Silicon Valley 2.0 Climate Adaptation Guidebook
What?
The Silicon Valley 2.0 Project (SV 2.0 Project) is an extensive regional effort, designed and managed by
the Santa Clara County Office of Sustainability, and funded by the State of California’s Strategic Growth
Council, to minimize the anticipated impacts of climate change within the boundary of Santa Clara
County (15 cities: Campbell, Cupertino, Gilroy, Los Altos, Los Altos Hills, Los Gatos, Milpitas, Monte
Sereno, Morgan Hill, Mountain View, Palo Alto, San Jose, Santa Clara, Saratoga, and Sunnyvale; and the
unincorporated portions of the County). Building on a multi-year, multi-stakeholder process, the SV 2.0
Climate Adaptation Guidebook (Guidebook) captures the key inputs and outputs of the SV 2.0 Project
and helps establish a proactive framework for Santa Clara County and its member cities, agencies, and
other stakeholders, such as State and federal authorities, to work together to help prepare the region
for the anticipated impacts of climate change in the short, mid, and long term.
Who Should Use the Guidebook?
Santa Clara County aspires for the Guidebook to be a living, go-to sourcebook of climate adaptation
solutions and opportunities to be pursued not only by individual cities, but more importantly cities in
partnership with each other, the County, and key agencies and stakeholders. Together, new and
innovative collaborations could realize greater benefits for the region’s climate preparedness and
general quality of life than might otherwise be achieved by separate actors.
The Guidebook is not designed as a “plan” to be adopted by one or many jurisdictions, but rather
intends to provide a recommended set of strategies that can be taken on by individual agencies, groups
of cities, and/or regional partnerships. A coordinated response to climate change is needed now, in
order to ensure that the region continues to thrive in the future.
PROJECT GOALS
The following five goals were established at the outset of the SV 2.0 Project to guide the process:
• Engage a robust vulnerability and risk assessment framework to identify relevant climate
stressors, map and measure the regional assets threatened by climate change and volatility, and
understand the magnitude of potential impacts
• Develop the geo-economic SV 2.0 Climate Change Preparedness Decision Support Tool (Tool) to
evaluate the vulnerability and consequence of potential climate change scenarios on key assets
(see page 10)
• Identify the area’s top priorities and develop a comprehensive set of adaptation strategies to
implement an effective regional-scale response to minimize climate impacts
• Facilitate and coordinate regional, near-term climate adaptation action, planning, and
implementation efforts for Silicon Valley
• Create a set of resources capable of being used and replicated in other regions and statewide

Executive Summary i-3
Why?
The SV 2.0 Project focuses on Santa Clara County (1.9 million residents as of 20131
), but its success is
critical to the larger Silicon Valley (3 million people and 1.4 million jobs).2
The area is consistently ranked
amongst the top regions for growth in employment, personal income, and real taxable sales. Santa
Clara County has the highest average salary and median family income in California, and is one of the
most ethnically diverse metro areas in the U.S.3
The county is a highly desirable place to live and
conduct business, but climate change presents a complex and uncertain challenge that requires the
dedication and action of multiple agencies and actors at all levels. While mitigation efforts are underway
by cities in the County (and globally), some effects of climate change are unavoidable4
and underpin the
critical need for adaptation planning.
CLIMATE CHANGE AND SILICON VALLEY
Over the next century, increasing atmospheric greenhouse gas concentrations are expected to cause a
variety of changes to local climate conditions, including sea level rise (SLR) and storm surge by the San
Francisco Bay (the Bay), increased riverine flooding throughout the county, and higher temperatures
more frequently (leading to extreme heat events and wildfires), particularly inland. These climate
variables (and associated threats) are projected to impact critical assets throughout the county,
including regionally significant highways, water and wastewater treatment plants, electricity
substations, technology campuses and other employment centers, agriculture, homes, vulnerable
populations, and ecosystems.
For example, climate change could cause the Bay to rise 12 to 24 inches by mid-century and by 36 to 66
inches by end-of-century.5
This means that today’s floods will likely be the future’s high tides and areas
that currently flood every 10 to 20 years could be inundated more frequently. The occurrence of
extreme heat days6
in Santa Clara County is also predicted to increase dramatically by mid- and end-of-
century from the historical frequency of four days per year on average, which could have significant
impacts on vulnerable populations, such as the very young, old, and infirm. Although the county and the
state are experiencing one of the most severe drought periods of record, drought was not included as a
climate variable in the SV 2.0 Project because it does not directly impact physical infrastructure assets.
Additional details on historic weather events and projected climatic changes are described in Chapter 2
of the Guidebook and the Appendix.
1
http://quickfacts.census.gov/qfd/states/06/06085.html
2
http://www.siliconvalleycf.org/sites/default/files/publications/2014-silicon-valley-index.pdf
3
http://www.forbes.com/sites/trulia/2012/11/13/finding-diversity-in-america/
4
http://climate.nasa.gov/faq/
5
Sea-Level Rise for the Coasts of California, Oregon, and Washington: Past, Present, and Future, National Research Council
2012 http://www.nap.edu/catalog/13389/sealevel-rise-for-the-coasts-of-california-oregon-and-washington
6
CalAdapt defines an extreme heat day in a given region is defined as a day in April through October where the maximum
temperature exceeds the 98th historical percentile of maximum temperatures for that region based on daily temperature data
from 1961 to 1990.

GUIDEBOOK CONTEXT—RELATIONSHIP TO EXISTING PLANNING EFFORTS
The SV 2.0 Project is unique in its county-level, pan-asset sector approach to climate change adaptation
and collaboration with cities, agencies, and key stakeholders. It is one of several important climate
change adaptation efforts occurring at the State and Bay Area levels. Of these, the summary list below
highlights the adaptation planning efforts most closely related to the SV 2.0 Project (as of January 2015)
that could yield useful partnerships. These existing efforts also helped inform the project methodology
and gap analyses conducted for each asset sector (see Appendix). The County will continue to engage
with these entities to stay up-to-date on pertinent adaptation and resilience efforts.
• Safeguarding California [California Natural Resources Agency]: 2013 update to the State’s 2009
Climate Adaptation Strategy, providing policy guidance for State decision makers in their efforts
to reduce impacts and prepare for climate change risks.
• State Hazard Mitigation Plan [Federal Emergency Management Agency (FEMA)]: Establishes
long-term policies and actions to reduce risk and future losses from a wide range of hazards, and
secures FEMA funding. The State of California’s Enhanced State Hazard Mitigation Plan also
incorporates climate change considerations.
• Regional Multi-Jurisdictional Local Hazard Mitigation Plan [Association of Bay Area
Governments (ABAG)]: 2010 Update of the Multi-Jurisdictional Hazard Mitigation Plan for the
San Francisco Bay Area includes climate change impacts, with an opportunity for Santa Clara
County to participate in the 2016 update.
• Adapting to Rising Tides [San Francisco Bay Conservation and Development Commission
(BCDC) and National Oceanic and Atmospheric Administration (NOAA)]: Collaborative planning
effort to help Bay Area communities adapt to SLR and storm surge flooding, starting with
Alameda County.
• Bay Area Climate + Energy Resilience Project [Joint Policy Committee (JPC)]: Collaborative of
100+ public, private, and non-profit stakeholders in the Bay Area focused on specific actions that
will help stakeholders move forward with climate adaptation planning and implementation.
• Bay Area Housing and Community Risk Assessment Project [ABAG, BCDC + US Environmental
Protection Agency (EPA)]: Helping the Bay Area meet smart growth, resilience, sustainability,
prosperity, and equity goals by developing strategies to plan smartly for future housing
development, and strengthen existing housing and communities that may be vulnerable to SLR
and earthquakes.
• Climate Readiness Institute [University of California (UC) Berkeley]: Developing cutting edge
climate science, adaptation strategies, and mitigation tools needed to ensure a resilient, low-
carbon Bay Area.
• 100 Resilient Cities San Francisco, Oakland, Berkeley [Pioneered by the Rockefeller
Foundation]: Funded program to establish resilience strategies and resilience as a citywide
priority. Led by an appointed Chief Resilience Officer and supported by 100 Resilient Cities and
its consultant partners.
• Santa Clara County Multiple Jurisdiction Climate Action Planning Project: Developing plans for
several cities in the county to reduce community and municipal greenhouse gas emissions in the
transportation, building energy, water/wastewater, waste/recycling, and agriculture (rural and
urban) sectors by 2050.

How?
STAKEHOLDER ENGAGEMENT
Technical Advisory Committee
An essential component of the SV 2.0 Project was regular engagement with a group of key local
stakeholders and technical experts. The Technical Advisory Committee (TAC) was convened and led by
the County’s Office of Sustainability, and included representatives from local cities, utility providers,
public service providers, federal agencies, non-profits, and other pertinent organizations. Over an
18-month period, the TAC convened six meetings and provided critical review of the asset sector
gap analysis, adaptation strategies, the Draft Guidebook, and the beta version of the Tool.
Project Partners
A larger group of approximately 60 local stakeholders was convened at the outset of the project to
review the proposed vulnerability assessment methodology and preliminary exposure maps, and to
provide input on the impact of historic extreme weather events on the SV 2.0 Project asset sectors. They
also provided their input on the biggest climate threats, barriers, and needs relating to regional
collaboration and the appropriate time horizon for climate adaptation planning in the county. Select
Project Partners also assisted with the Draft Guidebook review.
Working Groups
Ecosystems and Public Health working groups were convened as part of the vulnerability assessment
and adaptation strategy development. Ecosystems included recognized local professionals (biology,
habitat conservation, landscapes, and resource management) and Public Health leveraged the County’s
existing Public Health Department’s General Plan Amendment Working Group. These two groups
provided insight and review on the gap analysis, vulnerability assessment, and the adaptation strategies.
The Solid Waste Working Group reviewed and provided comment on asset sector-specific strategies in
the draft Guidebook and an Economic Resiliency group was also convened.
SV 2.0 CLIMATE CHANGE PREPAREDNESS DECISION SUPPORT TOOL
The Tool <www.siliconvalleytwopointzero.org> automates vulnerability assessment and economic
consequence analysis7
for infrastructure and property-related assets, allowing jurisdictions and users to:
• Select different climate variables, time-horizons, geographies, assumptions, and assets to study
• Understand how the region’s climate conditions will change over the next century
• See which assets will be exposed to each climate change variables and the associated
vulnerability
• Calculate estimated levels of economic consequence resulting from asset vulnerability
• Generate vulnerability and risk reports, maps, tables, and charts
7
The Tool does not contain an adaptive capacity analysis (i.e., an assessment of an asset’s or system’s ability to adapt to a
changing environment) because of the difficulties associated with automating a regional-scale evaluation of site level conditions
and the constantly changing policy environment.

In order to facilitate real-time climate vulnerability and economic consequence assessments, the Tool
contains up-to-date geospatial data on SLR, storm surge, riverine flooding, wildfire, and extreme heat
climate variables at both mid-century and end-of-century horizons. It also includes data on seven
physical asset sectors (types of infrastructure, property, and buildings) and 25 sub-assets (see Table 2).
The Tool does not include air quality deterioration as a climate variable due to the current lack of
geospatial data, nor the SV 2.0 Project’s Public Health or Ecosystem asset sectors.
Figure 1: SV 2.0 Tool Screenshot Example, Vulnerability Assessment Summary
PROJECT METHODOLOGY
The project methodology was designed to inform a robust assessment process and includes a
combination of technical approaches within three distinct phases:
• Data Collection: local climate variables and community assets to be assessed
• Vulnerability Assessment: analysis of the exposure, sensitivity, and adaptive capacity of the
selected assets to each climate variable
• Risk Assessment: analysis of the likelihood and economic consequence of climate variables on
vulnerable assets
Figure 2 outlines the SV 2.0 Project methodology and how the assessment and rating processes
informed adaptation strategy development and other subsequent approaches of the project.

Figure 2: Project Methodology Flow Chart
Climate Variable Data
The term “climate variable” is used to describe basic physical, chemical, or biological variables that
contribute to the characterization of the earth’s climate. For the SV 2.0 Project, sea level, precipitation,
and temperature are referred to as “primary climate variables”. These primary climate variables interact

with local factors, such as land use, vegetation, and soil conditions to produce second-order impacts
such as riverine flooding, wildfire, drought, and air quality deterioration (“secondary climate variables”).
Increasing atmospheric greenhouse gas concentrations are expected to cause a variety of changes to
local climate conditions throughout Santa Clara County, including SLR, increased riverine flooding, and
more sustained / higher temperatures (leading to extreme heat events and wildfires). Table 1
summarizes the County’s relevant historic and projected climate variable trends. See Chapter 2 for
additional detail on these variables, as well as information on drought and air quality deterioration.
Table 1: Summary of Santa Clara County’s Historic and Projected Trends in Climate Variables
HISTORICAL ANALYSIS
FUTURE CLIMATE CHANGE
PROJECTIONSCLIMATE VARIABLE FREQUENCY OF
OCCURRENCE
LEVEL OF
IMPACT
HISTORICAL
TREND
Sea Level Rise
High (0.8
inches/decade)
No data found Increasing
Increasing 11–19 inches by
mid-century and 30–55 inches
by end-of-century.
Riverine Flooding
High
(almost annual)
High
(property, cost)
Uncertain
Annual: No change in annual
average precipitation.
Seasonal: Less spring and
autumn precipitation. Generally
wetter, but more variable, winter
precipitation year to year.
Intensity: 3-day maximum
precipitation peak values
increasing.
Increase in riverine flooding due
to increased frequency of strong
storms.
Wildfire
High
(annual)
High
(injury,
property, cost)
Increasing
Increasing in frequency and
duration. Change in severity
unknown due to dependence on
local conditions.
Extreme Heat
Medium
(multiple per
decade)
High
(life, injury,
cost)
Increasing
Increase in severity, frequency,
duration.
Drought
Medium
(multiple per
decade)
High (cost) Stable Increasing
Air Quality
Deterioration
No data found No data found No data found Increasing

Community Asset Data—Asset Sectors
As mentioned, climate change vulnerabilities were assessed for nine asset sectors comprised of physical
assets (buildings properties, and infrastructure), public health assets (populations), and ecosystems
(natural landscapes). Table 2 summarizes the asset sectors and associated sub-assets (types). As the
shoreline protection strategies presented could help protect multiple assets, they are also referenced as
addressing ‘All’ assets. NOTE: Agriculture was not included as an asset sector in the current SV 2.0
Project since it does not comprise a major part of the Santa Clara County’s economy or jobs, but it is
earmarked as a priority for the next iteration of the SV 2.0 tools and resources.
Table 2: Asset Sectors and Sub-Sectors (Types) Considered
ASSET SECTOR SUB-ASSET SECTORS (TYPES)
Shoreline Flood
Protection (All)
Engineered flood protection (dikes + levees), non-engineered berms, wetlands
(serving other assets regionally)
Buildings + Properties Buildings (per parcel)
Property (vacant urbanized land, not large-scale open space or agricultural land)
Communications Fiber optics lines
Data centers
Communication towers
Ecosystems Natural
landscapes
(includes
large
regional
open spaces
and parks)
Coastal wetland (coastal salt marsh marsh)
Coastal scrub
Riparian and riverine
Grassland
Freshwater wetland
Chaparral and scrubland
Oak woodland
Coniferous forest
Redwood forest
Hardwood forest
Lakes and ponds
Energy Energy generation facilities
Substations
Transmission infrastructure (electrical)
Public Health General populations
Vulnerable populations (seniors >65, children <5, disadvantaged, those with health
conditions)
Healthcare facilities and workers
Solid + Hazardous Waste Solid waste facilities (landfills, recycling facilities, transfer stations, composting)
Contaminated land sites (Superfund, State Response, surface and ground toxicity)
Hazardous waste sites (household and industrial waste storage)

ASSET SECTOR SUB-ASSET SECTORS (TYPES)
Transportation Roads (highways and local)
Bridges
Pedestrian ways and bikeways
Airports
Rail (heavy and light)
Water + Wastewater Water treatment plants (potable water)
Wastewater treatment plants
Reservoirs
Vulnerability Assessment
The SV 2.0 Project vulnerability assessment evaluates the degree to which an asset is susceptible to and
unable to cope with the projected changes in SLR, storm surge, riverine flooding, extreme heat, and
wildfire. It includes exposure analysis, sensitivity analysis, and adaptive capacity analysis. The Tool
automates exposure and sensitivity, with adaptive capacity considered independently (see Figure 2). As
shown in Figure 3 below, the Tool produces detailed maps indicating whether or not a selected asset is
vulnerable to each climate variable and to what extent.
Figure 3: SV 2.0 Tool Screenshot Example, Vulnerability Assessment Map for Solid Waste Facilities

Economic Consequences Analysis
The consequence analysis in the SV 2.0 Project focuses on the economic consequences associated with
the temporary or permanent loss or impairment of assets due to climate change in Santa Clara County.
A primary driver for understanding climate vulnerability, and developing and implementing adaptation
strategies, is to help ensure that businesses continue to locate and invest in Santa Clara County, thus
providing access to high-quality jobs and services. Estimating the potential economic consequences of
climate change impacts to the region helps support the implementation of the recommended
adaptation strategies, which may seem expensive in the near-term, but are relatively low when
compared to the significantly higher future costs of inaction.
Framework
The SV 2.0 Decision Support Tool provides the potential economic consequences for each asset under a
mid-century climate change scenario in which no adaptive measures have been taken. These order of
magnitude estimates outline the baseline costs of inaction under current (2014) economic conditions,
allowing decision-makers to better consider adaptation measures that could help avoid these costs.
While the Tool also allows users to view economic consequences at end-of-century, these results were
not included in the Guidebook, because a scenario in which no adaptive measures have been taken is
less probable for this timeframe.
The economic consequences of climate change come in many forms, but the SV 2.0 analysis is focused
on quantifiable impacts to the asset sectors included. It is in part limited by the data availability from
which order of magnitude costs associated with climate-related natural hazard events could be
estimated. The economic consequences criteria and ratings are summarized below and further
explained in Chapter 2. See the Appendix for a detailed description of data sources and calculations.
• Replacement Cost: cost to replace a damaged asset or parts of a damaged asset
• Loss of Fiscal Revenue: loss of property tax and sales tax revenue due to an impaired asset
• Change in Operational Cost: cost of changes in the operation of an asset in order to retain its
functionality or reduce damage
• Interruption of Economic Activity: cost of lost or delayed economic activity, such as labor or
goods movement, resulting from an asset’s impairment
Limitations of the Analysis
Beyond the criteria included in this analysis, other important economic consequences of climate change
have not been possible to quantify due to lack of available information, such as the economics impacts
of decreased health, loss of ecosystem services, increasing utility rates, and the social impacts of
increased crime or population displacement. As such, the economic consequences described here are
considered low estimates, with real impacts likely to be significantly higher when considering the
broader environmental and social costs associated with climate change. Furthermore, the analysis
largely considers the economic impact of individual climate variables on specific assets, which does not
fully capture the potential for cascading and cumulative economic consequences. Multiple climate-
related disasters within a short timeframe, or the simultaneous loss of multiple assets, could impact the
economy to a greater extent than captured in this analysis.

Results
Table 3 estimates the potential aggregate economic consequences of climate change impacts on all
assets included in the economic consequences analysis.8
The overall economic consequences of SLR and
SLR + storm surge on the assets analyzed are considered Very High at $3–$13 billion. The overall
economic consequences of riverine flooding and wildfire on the assets analyzed are rated Extreme (in
excess of $13 billion). The economic consequences of extreme heat on the assets analyzed are
estimated to be Low (less than $100 million), based on impacts only to the buildings and properties
sector. Due to lack of available data, the total societal economic consequences of extreme heat were
not estimated (e.g., the public health sector), which could be significant considering the additional strain
placed on the County’s infrastructure and services. As these estimates only address direct operation
costs, they are considered to be conservative.
Table 3: Aggregate Economic Consequences for All Assets (Mid-Century)
SEA LEVEL RISE
SEA LEVEL RISE
+ STORM
SURGE
RIVERINE
FLOODING
WILDFIRE EXTREME HEAT
Replacement Cost Very High Very High Extreme Extreme N/A
Loss of Fiscal
Revenue
High High Very High Very High N/A
Change in
Operational Costs
N/A N/A N/A N/A Low
Interruption of
Economic Activity
High Very High Extreme High N/A
Overall Economic
Consequences
Very High Very High Extreme Extreme Low
Note: For definitions of economic consequence criteria and ratings, please see Chapter 2. N/A: not applicable or
data not available.
8
The analysis does not include data centers, fiber optic lines, bridges, and solid waste facilities due to insufficient
cost data.

Strategy Development
Based on the vulnerability assessment, targeted climate adaptation strategies were developed to help
mitigate potential climate change impacts to specific assets throughout the county. A long list of
strategies was developed, vetted by the TAC and others, and prioritized using the following criteria:
• Addresses critical facilities or infrastructure; i.e. hospitals, water treatment?
• Addresses multiple asset sectors and/or sub-sectors? New or existing assets?
• Regional impacts and benefits? Anticipated jurisdictional actor(s)?
• Anticipated initiation timing; i.e., short term vs long term?
• Potential environmental, economic, and social benefits?
• Significant high-level capital and/or financing requirements?
A final recommended list of strategies is included in the Guidebook, along with the following supportive
information:
• Table summary of key information
o Asset
o Climate variable
o Strategy summary
o Scale
o Class
o Timing
o Lead
o Cross asset sector applicability
o Potential co-benefit(s)
• Strategy description and background
• Implementation considerations, as applicable
o Timing
o Challenges and solutions
o Additional benefits
• Relevant precedents
• Resources and references
Table 4 outlines the complete current set of SV 2.0 climate adaptation strategies, organized by asset
sector and indicating the climate variable(s) to be addressed by each. The recommended strategies
(shown in blue) generally focus on short term priorities and actions, but most asset sectors also include
‘other strategies for consideration’.

Table 4: Comprehensive Set of Climate Adaptation Strategies by Asset Sector
CLIMATE VARIABLES
CLIMATE ADAPTATION STRATEGIES
SEALEVELRISE
SEALEVELRISE+
STORMSURGE
RIVERINE
FLOODING
WILDFIRE
EXTREMEHEAT
SHORELINE FLOOD PROTECTION (ALL ASSETS)
Engineered Flood Protection Structures, Non-Engineered Berms, Wetlands
S-1. CONTINUE COORDINATION WITH SOUTH BAY SALT POND
RESTORATION PROJECT.
S-2. CONTINUE COORDINATION WITH THE SOUTH SAN FRANCISCO
BAY SHORELINE STUDY.
S-3. CONDUCT AN OVERTOPPING ANALYSIS OF EXISTING SHORELINE
FLOOD PROTECTION ASSETS.
S-4. USE THE UPDATED FEMA FIRMS TO IDENTIFY THE SOURCE OF
FLOODING (E.G., RIVERINE VERSUS COASTAL) ASSOCIATED WITH 100-
YEAR FLOOD EVENTS.
S-5. INCREASE PUMP STATION CAPACITY AND PROVIDE PROTECTION
FOR PUMP STATIONS.
S-6. ENHANCE MONITORING AND/OR MAINTENANCE PROGRAMS FOR
LEVEES AND FLOOD WALLS.
S-7. INCREASE THE DESIGN CRITERIA FOR CURRENT AND FUTURE
FLOOD PROTECTION PROJECTS FROM 100-YEAR FLOOD EVENTS TO
HIGHER-IMPACT FLOOD EVENTS.
S-8. MODEL PROJECTED CHANGE IN THE FREQUENCY AND
MAGNITUDE OF RIVERINE FLOODING CAUSED BY PRECIPITATION IN
THE COUNTY.
BUILDINGS + PROPERTIES
Buildings and Properties
BP-1. IDENTIFY A CORE STAKEHOLDER GROUP TO FACILITATE LAND
USE PLANNING STRATEGY IMPLEMENTATION.
BP-2. IDENTIFY AND CONSIDER RELOCATION OPPORTUNITIES FOR
CRITICAL FACILITIES.

BP-3. PROVIDE INCENTIVES TO DIVERT FUTURE DEVELOPMENT AWAY
FROM HIGH-HAZARD AREAS.
BP-4. PARTNER WITH CORPORATE CAMPUSES TO CREATE REGIONAL
ADAPTATION STRATEGY FOR SILICON VALLEY TECH COMPANIES.
BP-5. REVISE APPLICABLE BUILDING CODES TO REQUIRE FLOOD-
RESISTANT DESIGN.
BP-6. REVISE MINIMUM BUILDING ELEVATION STANDARDS AND
MAXIMUM BUILDING HEIGHT LIMITS FOR NEW DEVELOPMENT.
OTHER STRATEGIES FOR CONSIDERATION
BP-7. Integrate natural stormwater systems within site and building
design to expand on-site stormwater management capacity.
COMMUNICATIONS
Fiber Optic Lines, Data Centers, Communication Towers
C-1. DEVELOP DETAILED VULNERABILITY ASSESSMENTS FOR
COMMUNICATION INFRASTRUCTURE ASSETS.
C-2. ASSESS ASSETS FOR CRITICALITY AND CONSIDER ADAPTATION
OPTIONS BY WEIGHING THEIR RELATIVE COSTS AND BENEFITS.
C-3. CONTINUE/MODIFY EXISTING EFFORTS TO PROTECT
INFRASTRUCTURE FROM RIVERINE FLOODING AND WILDFIRE.
C-4. Prepare ahead of forecasted extreme events to minimize
inundation impacts.
C-5. Secure locations of assets in non-flood prone areas.
ECOSYSTEMS
Freshwater Wetlands, Riparian and Riverine, Grassland, Hardwood Forest, Oak Woodland, Urban
ES-1. CLIMATE SMART PLANTING PALETTES DEVELOPMENT AND
EDUCATION CAMPAIGN.
ES-2. MAXIMIZE RETENTION OF LOCAL WATER THROUGH CLIMATE-
SMART RANGE MANAGEMENT PRACTICES.
ES-3. PROTECT BIODIVERSITY THROUGH MULTI-COUNTY
CONSERVATION OF CLIMATE SMART WILDLIFE CORRIDORS.

Grassland, Hardwood Forest, Oak Woodland, Conifer Forest, Redwood Forest
ES-4. Reduce Wildfire risk reduction in natural landscapes by
investigating opportunities within zoning, home construction, and fire
safe building and landscape codes for the urban-wildland interface.
Grassland, Hardwood Forest, Oak Woodland, Conifer Forest, Redwood Forest, Chaparral and Scrubland,
Riparian and Riverine, Coastal Wetland, Freshwater Wetland
ES-5. Implement a fine scale ecosystem assessment utilizing climate
water deficit data.
Aquatic and Riparian Habitat
ES-6. Prioritize coldwater habitat conservation and restoration through
amendments to habitat conservation plans and in-creek projects.
All Upland and Freshwater Natural Habitats
ES-7. Develop best practice standards for water retention design for
habitat restoration and creation projects on natural lands.
All Upland and Freshwater Natural Habitats, Water Supply
ES-8. Increase climate messages in ongoing water conservation public
awareness campaign.
All Upland and Aquatic Natural Habitats, Sensitive Species, Water infrastructure, Agriculture
ES-9. Understand vector-based impacts of climate and address invasive
species through pursuit of stronger state laws and programs.
ENERGY
Energy Generation Facilities, Substations, Transmission Infrastructure
E-1. DEVELOP DETAILED VULNERABILITY ASSESSMENTS OF ENERGY
INFRASTRUCTURE ASSETS.
Power Generation Facilities and Substations
E-2. ASSESS ASSETS FOR CRITICALITY AND CONSIDER ADAPTATION
OPTIONS BY WEIGHING THEIR RELATIVE COSTS AND BENEFITS.
E-3. CONTINUE/MODIFY EXISTING EFFORTS TO PROTECT
INFRASTRUCTURE FROM RIVERINE FLOODING, SEA LEVEL RISE, AND
STORM SURGE.

Substations and Transmission Infrastructure
E-4. CONTINUE/MODIFY EXISTING EFFORTS TO PROTECT
INFRASTRUCTURE FROM WILDFIRES.
E-5. SUPPORT THE STUDY AND DEVELOPMENT OF MICROGRID
INFRASTRUCTURE SYSTEMS.
E-6. Prepare ahead of forecasted extreme events to minimize impacts.
E-7. Secure locations of assets in non-hazard prone areas.
Power Generation Facilities and Substations
E-8. Review existing backup power supply plans and processes to ensure
availability of backup supplies during flooding related disruptions.
Substations and Transmission Infrastructure
E-9. Plan for additional long-run transmission capacity to offset some of
the risks posed by fires to infrastructure.
PUBLIC HEALTH
General and Vulnerable Populations
PH-1. CONTINUE TO IDENTIFY POPULATIONS VULNERABLE TO
CLIMATE CHANGE AND DEVELOP ADAPTATION STRATEGIES AND
PRIORITIZE RESOURCES IN THE MOST HIGHLY-IMPACTED AREAS.
PH-2. COMPILE, MONITOR, AND COMMUNICATE SPECIFIC HEALTH
IMPACTS FROM CLIMATE CHANGE.
PH-3. INCREASE PUBLIC AWARENESS AND UNDERSTANDING OF
CLIMATE CHANGE IMPACTS ON HEALTH AND THE NEED TO PREPARE
FOR THESE CHANGES.
Health Care System and Professionals
PH-4. PREPARE HEALTH CARE FACILITIES AND PROFESSIONALS FOR
CLIMATE CHANGE.
PH-5. IMPROVE ACCESS TO COOLING LOCATIONS DURING EXTREME
HEAT EVENTS.

General and Vulnerable Populations, Workers
PH-6. COMMUNICATE THE NECESSARY MEASURES TO PROTECT
RESIDENTS AND WORKERS AT RISK TO EXTREME HEAT.
PH-7. DEVELOP A HEAT ISLAND EVALUATION PROGRAM.
Homeless Residents
PH-8. EXPAND HOMELESS SUPPORT SERVICES DURING ALL EXTREME
WEATHER EVENTS.
PH-9. COORDINATE WITH PARTNER ORGANIZATIONS TO
COMMUNICATE MEASURES TO PROTECT RESIDENTS AND WORKERS
DURING HIGH OZONE AND HIGH PARTICULATE MATTER DAYS.
PH-10. COORDINATE WITH THE BAY AREA AIR QUALITY
MANAGEMENT DISTRICT IN REDUCING EMISSIONS IN COMMUNITY
AIR RISK EVALUATION COMMUNITIES.
PH-11. IDENTIFY LOCATIONS IN THE COUNTY WHERE OZONE
CONCENTRATIONS EXCEED ALLOWABLE STANDARDS.
PH-12. CONTINUE COORDINATION TO MANAGE VECTOR
POPULATIONS DURING CLIMATE CHANGE.
PH-13. MONITOR DISEASES TO BETTER UNDERSTAND EMERGING
PUBLIC HEALTH THREATS AND USE THE INFORMATION TO PLAN AND
RESPOND TO DISEASE OUTBREAKS.
SOLID + HAZARDOUS WASTE
Solid Waste Facilities and Hazardous Waste Sites
SW-1. REVISE CURRENT PERMITTING AND MONITORING STANDARDS
FOR ALL SOLID WASTE FACILITIES AND HAZARDOUS WASTE SITES TO
INCLUDE ASSESSMENTS FOR CLIMATE CHANGE VARIABLES.

Solid Waste Facilities
SW-2. WORK WITH OPERATORS TO CONDUCT DETAILED SITES
ASSESSMENTS AT ACTIVE, VULNERABLE SITES AND IDENTIFY
ALTERNATIVE LOCATIONS IN THE COUNTY ZONED TO HOST NEEDED
FUNCTIONS AND CAPACITIES.
Contaminated Land
SW-3. ASSESS AND PRIORITIZE THE ~130 CONTAMINATED SITES MOST
VULNERABLE TO CLIMATE CHANGE AND WORK WITH PROPERTY
OWNERS TO DEVELOP AND IMPLEMENT ADAPTATION PLANS.
Hazardous Waste Sites
SW-4. ASSESS AND PRIORITIZE THE ~16 HAZARDOUS WASTE SITES
MOST VULNERABLE TO CLIMATE CHANGE AND WORK WITH PROPERTY
OWNERS TO DEVELOP AND IMPLEMENT ADAPTATION PLANS OR
RELOCATE HAZARDOUS WASTE TO LESS VULNERABLE AREAS
(IDENTIFIED IN CONCERT WITH LOCAL MUNICIPALITIES).
Landfills
SW-5. Increase solid waste diversion rates throughout the county to
reduce demand and need for landfills.
TRANSPORTATION
Roads (Highways and Local), Bridges, Pedestrian Ways, Bikeways, Rail Tracks (Heavy and Light), Airports.
T-1. MAINSTREAM CLIMATE CHANGE CONSIDERATIONS IN ALL
TRANSPORTATION AGENCY PLANNING AND DECISION-MAKING
PROCESSES.
T-2. COLLABORATE WITH RELEVANT TRANSPORTATION AGENCIES TO
CONDUCT A DETAILED VULNERABILITY ASSESSMENT OF
TRANSPORTATION ASSETS AND SERVICES.
Airports
T-3. REVIEW MASTER PLANNING PROCESSES TO UNDERSTAND THE
OPPORTUNITIES AND RISKS CLIMATE CHANGE MAY PRESENT TO THE
PALO ALTO AIRPORT.
Rail Tracks (Heavy)
T-4. INCORPORATE HEAT-RELATED IMPACTS ON RAIL TRACKS INTO
EXISTING OPERATIONS AND COMMUNICATION PROCEDURES.

Roads (Highways and Local)
T-5. Review materials specifications for road materials.
T-6. Protect electrical components from temporary inundation.
Rail Tracks (Heavy and Light)
T-7. Incorporate heat-resistant or heat-reflective materials in the
construction of new rail tracks.
Airports
T-8. Update preparedness and contingency planning to address more
frequent temporary inundation of airport runways.
T-9. Incorporate future climate change impacts into master planning
processes.
WATER + WASTEWATER
Wastewater Treatment Plants, Drinking Water Treatment Plants, Stormwater Management Systems
W-1. SHARE GEOSPATIAL DATA FROM THE SV 2.0 TOOL WITH WATER
AND WASTEWATER ASSET OWNERS.
Water and Wastewater Treatment Plants
W-2. DEVELOP A DETAILED VULNERABILITY ASSESSMENT OF WATER
AND WASTEWATER ASSETS TO INFORM SITE-SPECIFIC ADAPTATION
OPTIONS.
Reservoirs
W-3. INTEGRATE PROJECTED INCREASES IN WILDFIRE FREQUENCY AND
INTENSITY INTO STATE, COUNTY AND CITY PLANS AND PRACTICES.
Wastewater Treatment Plants
W-4. Prepare ahead of forecasted flooding events to minimize impacts.

What to Do Now?
GUIDEBOOK INTENT + NEXT STEPS
Santa Clara County anticipates playing an important coordination and convening role in this effort, as
well as spearheading a number of adaptation strategies that require multi-actor collaboration. It is
hoped that municipalities and agencies will use the Guidebook and accompanying online Tool to inform
climate adaptation planning and initiation phases across jurisdictions. The Guidebook and Tool can help
prioritize vulnerable assets and identify the most appropriate strategies to help protect them.
Understanding these needs early on in the County can help ensure they are planned for through existing
processes, such as general plan updates, capital plans, budgets, etc. Jurisdictions and agencies are
encouraged to:
• Review the SV 2.0 Guidebook and use the Climate Preparedness Decision Support Tool (User
Guide available on the County’s website)
• Understand the exposure and sensitivity of assets to different climate variables
• Identify the biggest economic impacts to each asset sector
• Review the gap analysis for existing asset-specific initiatives and identify opportunities for
building on current successes
• Target the most applicable strategies for a specific city or combination of cities and develop
plans and programs for implementation with key partners
For the next phase of the SV 2.0 Project, the County will collaborate with key stakeholders and
coordinate resources and efforts to support the Guidebook’s implementation. The County will also seek
to resource the Tool internally via funding and staffing to keep it current.
GUIDEBOOK STRUCTURE
The Guidebook has been organized for ease of use, providing information on climate change science,
the unique situation for Silicon Valley, findings from a robust research and analysis effort, and key
climate adaptation strategies organized across nine asset sectors.
• Chapter 1: SV 2.0 Project genesis and goals, existing planning and policy context, project process
(stakeholder engagement, etc.), and instructions on how to use the Guidebook.
• Chapter 2: Project methodology, including expected climate changes and historic weather event
impacts, definitions for asset sectors [shoreline protection, buildings + properties,
communications, ecosystems, energy, public health, solid + hazardous waste, transportation,
and water + wastewater] and primary and secondary climate variables [sea level rise, storm
surge, riverine flooding, wildfire, extreme heat], economic consequence analysis, and details on
the SV 2.0 Decision Support Tool.
• Chapter 3: Set of instructions on how to best navigate and use the recommended adaptation
strategies followed by nine sections. Organized by asset sector and ordered by climate variable,
the sections outline: results of climate change vulnerability and economic consequence analysis,
regional adaptation strategies and initiatives, implementation and coordination
recommendations, precedents, and resources.

• Appendix: Additional information about current climate science, sensitivity analysis findings
summary, gap analysis memos (by asset sector), detailed economic consequences analysis
methodology, resource and data source list, and other relevant studies that support the findings
and recommendations presented in the body of the Guidebook.

150519_ExecSum_FINAL

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