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MOUNTAIN HOUSE PROPOSED ALTAMONT HEIGHTS TENTATIVE MAP 4. ENVIRONMENTAL CHECKLIST 4.6 GEOLOGY AND SOILS Less Than Potential SPIIIEIR Significant Significant Requires Impact Due New New Impact Addittonal to Mitigation..Additional Additional Less Than Adequately Review:No Measures in Impact Not Mitigation Issue Significant Addressed in Significant Project Addressed In Measures or No Impact SPIIIEIR Impact Description SPIIIEIR Required 6. GEOLOGY AND SOILS. Would f the project_ a) Expose people or structures to :k potential substantial adverse effects, including the risk of loss,injury,or death involving: i) Rupture of a known earthquake fault,as delineated on the most �■ ❑ ❑ ❑ ❑ ❑ recent AIquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist , for the area or based on other substantial evidence of a known fault? Refer to Division ` of Mines and Geology Special Publication 42. ii) Strong seismic ground ■ L1 ❑ L1shaking? ❑ iii) Seismic-related ground failure, . ❑ ❑ ❑ including liquefaction? ❑ ❑ f iv) Landslides? ■ .❑ ❑ ❑ ❑ ❑ b) Result in substantial soil erosion or El c) loss of topsoil? ❑ ❑ ❑ ❑ c) Be located on a geologic unit or soil ■ ❑ that is unstable,or that would ❑ ❑ ❑ ❑ become unstable as a result of the project,and potentially result in on- or oft:--site landslide, lateral spreading,subsidence,liquefaction $ or collapse? @R d) Be located on expansive soil,as ■ ❑ ❑ ❑ ❑ El in Fable 18-1-B of the Uniform Building Code(1994), creating substantial risks to life or property? e) Have soils incapable of adequately ■ El ❑ ❑ ❑ supporting the use of septic tanks or alternative wastewater disposal systems inhere sewers are not ` available for the disposal of wastewater? 1 i 4-27 = 1