addressing climate change adaptation in regional transportation plans

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particular concern are populations that do not have the resources to prepare for,respond to, and recover from disasters. Impacts could include temporary and/or permanent displacement; drowning and property damage; and coastal erosionharming recreational activities, tourism, and the tourism industry.Sea level rise and severe storm surges are a concern for nuclear power plantsnear the Pacific Ocean, including the San Onofre Nuclear Power Plant in OrangeCounty. Risks associated with this facility include flooding of containmentbuildings where highly radioactive spent nuclear fuel is stored, loss of generatingcapacity owing to severe corrosion from the intrusion of seawater, and otherdamages to the facility due to sea level rise. The plant’s cooling practices might beimpacted due to rising ocean temperatures. (CDPH, 2008) These impacts couldaffect populations that live near the facility or rely on the power produced by thefacility. Industrial development in the region has left a legacy of brownfields andcontaminated waste sites. Some of these will be exposed to coastal flooding dueto sea level rise. These sites need to be identified, and priorities for their clean-upmay need to be set before contamination spreads.WildfireThe South Coast already experiences wildfire. The extent to which climatechange is projected to alter existing wildfire risk is variable (Westerling andBryant, 2006). Wildfire frequency and severity will depend on shifts in vegetationand Santa Ana wind behavior (Miller and Schlegal, 2006; Westerling et al., 2009).Management of fire risk such as prescribed burns may be subject to regulationsbeyond normal California forest practice. For example, the “High Use”subdistricts of Cal Fire’s Southern District (counties of Ventura, Santa Barbara,Los Angeles, San Bernardino, Orange, Riverside, Imperial, San Diego, Monterey,San Luis Obispo, and those portions of Placer and El Dorado counties lyingwithin the authority of the Tahoe Regional Planning Agency) may have additionalstipulations with regard to management practice.Increased temperature and decreased moisture, such as longer drought periods,will increase fire vulnerability in a number of areas. Along with impacts associatedwith temporary and/or permanent displacement, long-term impacts on theelderly and children under the age of five are of concern. Eye and respiratoryillnesses due to air pollution resulting from wildfires, and exacerbation ofasthma, allergies, chronic obstructive pulmonary disease (COPD), and othercardiovascular diseases are likely to increase.PAGE 90APG: UNDERSTANDING REGIONAL CHARACTERISTICS
Public Health, Socioeconomic, and Equity ImpactsIn the highly populated areas within this region, “urban heat islands” willexacerbate the public health impacts that poor air quality and heat waves haveupon the more vulnerable populations of this area. The highest percentagesof impervious surfaces are in the urban areas of Los Angeles and San Diegocounties, increasing the potential impacts of heat islands (English et al., 2007).Southern California’s urban centers are warming more rapidly than other partsof the state (English et al., 2007). Los Angeles, San Diego, and Orange countiesrank first, second, and third in the state in absolute numbers of the elderly andchildren less than five years of age. These two populations are most likely tosuffer from heat-related illnesses and heat events (English et al., 2007).Because of the significant and varied population in this region, there is also likelyto be a significant population that fits into a number of the socially vulnerablecategories lacking adaptive capacity. This increases the vulnerability of thesepopulations.The higher cost of living in some areas of this region means low-income familiespay a high percentage of their income on housing and transportation. Increases infood and energy costs may impact low-income residents.Water SupplyTwo primary sources of water used by the South Coast region are the StateWater Project and the Colorado River. In both cases, these water suppliesoriginate in mountain snowpack. Climate change will result in reduced snowpack,which will translate into reduced water supply. Further threatening the regionalwater supply is the vulnerability of the levees protecting the California Delta,which feeds the State Water Project (DWR, 2011). Jurisdictions in the SouthCoast must carefully consider the vulnerability of their water supply.Climate change will reduce water supply and subsequently increase costs.Industries reliant on water may be affected, resulting in reduced revenue andemployment base.APG: UNDERSTANDING REGIONAL CHARACTERISTICS PAGE 91
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Addressing Climate Change Adaptatio
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appendix b reportState-of-the-Pract
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State-of-the-Practice Climate Chang
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C A L I F O R N I AADAPTATIONPLANNI
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Adaptation Planning Guide - Advisor
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List of Tables (cont’d.)Table 6.
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Climate Impact RegionsThe APG is or
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APGSTART HERE:PLANNING FOR ADAPTIVE
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What are the designated climate imp
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CA Climate Adaptation Planning Guid
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• Selected Demographic Data. Sele
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Cal-Adapt ProjectionsTable 1. Summa
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Selected Infrastructure and Regiona
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illnesses due to air pollution resu
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Additional Resources• Sea level r
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Cal-Adapt ProjectionsTable 5. Summa
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Selected Infrastructure and Regiona
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frequency can harm forests. Large i
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Bay Area RegionCounties: Alameda, C
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the Sacramento and San Joaquin rive
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Table 12. Selected Population Data
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Sea level rise is also expected to
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Additional Resources• Public Heal
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Cal-Adapt ProjectionsTable 13. Summ
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Page 292 and 293: industry around Big Bear. As there
Page 294 and 295: California Natural Resources Agency
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addressing climate change adaptation in regional transportation plans

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