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MOUNTAIN HOUSE PROPOSED ALTAMONT HEIGHTS TENTATIVE MAP 4. ENVIRONMENTAL CHECKLIST 4.6 GEOLOGY AND SOILS Less Than Potential SPIIIEIR Signilicaot Significant Requires Impact Due New New Impact Additional. to Mitigation 'Additional Additional Less Than Adequately Review:No Measures in Impact Not Mitigation Significant Addressed in Significant Project Addressed to 'Measures 6. G or No Impact SPIIIEIR Impact Description SPIIIEIR, Required 6. GEOLOGY AND SOfLS. Would the project: z a) Expose people or structures to potential substantial adverse effects, including the risk of loss,injury,or death involving: i) Rupture of a known earthquake . ❑ ❑ ❑ El fault,as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist 4 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 ❑ ■ ❑ ❑ ❑ ❑ shaking? iii) Seismic-related ground failure, ■ ❑ i including liquefaction? ❑ ❑ ❑ ❑ iv) Landslides? ■ ❑ ❑ ❑ ❑ ❑ i b) Result in substantial soil erosion or ■ Ll F1 El El El loss of topsoil? c) Be located on a geologic unit or soil that is unstable,or that would ■ 11 ❑ E) Ll L1 become unstable as a result of the I project,and potentially result in on- or off-site landslide,lateral spreading,subsidence,liquefaction or collapse? d) Be located on expansive soil,as ■ defined in Table 18-1-B of the ❑ ❑ ❑ ❑ ❑ Uniform Building Code(1994), creating substantial risks to life or property? e) Have soils incapable of adequately ■ El El ❑ ❑ ❑ supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? i 4.2,