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SANTA ANA CLIMATE ACTION PLAN INITIAL STUDY <br />CITY OF SANTA ANA <br />c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result <br />of the project, and potentially result in on- or off -site landslide, lateral spreading, subsidence, <br />liquefaction, or collapse? <br />Less than Significant Impact. Seismic hazard zone maps from the California Geological Survey indicate <br />that areas of the City contain unstable soil and are susceptible to liquefaction. Additionally, Exhibit 4 of the <br />City of Santa Ana General Plan Seismic Safety Element includes several areas susceptible to subsidence.29 <br />Future development as a result of implementation of the Draft CAP has the potential to occur within these <br />areas of the City. However, development would be subject to the latest version of the CBC. Compliance with <br />the CBC would ensure impacts to unstable soils would be less than significant. <br />d) Be located on expansive soil, as defined in Table 18 -1 -B of the Uniform Building Code (1994), <br />creating substantial risks to life or property? <br />Less than Significant. According to the City of Santa Ana General Plan, expansive soils are found within <br />the south central section of the City.Se However, any development associated with the Draft CAP that would <br />take place in this area would be subject to the latest version of the CBC. Compliance with the CBC would <br />ensure impacts associated with expansive soils would be less than significant. <br />e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water <br />disposal systems where sewers are not available for the disposal of waste water? <br />No Impact. With the exception of a few geographic areas, the City of Santa Ana uses a sewer system and <br />does not require the use of alternative wastewater disposal systems or septic tanks. Additionally, the <br />recommended measures in the Draft CAP would not require the use of septic tanks or alternative waste water <br />disposal systems. No impact would occur. <br />3.7 GREENHOUSE GAS EMISSIONS <br />a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant <br />impact on the environment? <br />Less than Significant Impact. The measures in the Draft CAP are not anticipated to generate substantial <br />construction emissions, because those measures would result in only minor upgrades to existing uses. In <br />addition, any construction - related GHG emissions would be anticipated to be more than offset by the <br />operational benefits of the measures in the CAP. Implementation of the strategies and measures proposed <br />witivn the Draft CAP would result in annual community -wide GHG emission reductions. As shown in Table <br />2, the future Draft CAP measures would result in total MTCO2e reductions of approximately 366,998 <br />MTCC2e by 2020 and 654,294 MTCO2e by 2035. This does not include the emission benefits of existing <br />29 City of Santa Ana Planning Division. City of Santa Ana General Plan Seismic Safety Element p. 13. Adopted September <br />20, 1982. Available online at: http: //w .ci.santa- ana.ca.us /generalplan /documents /Scisn icSafety.pdf, accessed <br />August 31, 2015. <br />3o City of Santa Ana Planning Division. City of Santa Ana General Plan Land Use Element p. A -40. Adopted February 2, <br />1998. Available online at: http: //w .ci.santa- ana.ci.us /generalplan /documents /LandUseElement.pdf, accessed <br />August 31, 2015. <br />Page 32 October 2015 <br />75B -130 <br />