Laserfiche WebLink
According to the Preliminary Geotechnical Investigation prepared <br />for the Armstrong Ranch Development Project, soil materials on <br />the project site consist of fill and native alluvial soils. <br /> <br />The fill material generally consists of dark gray to black silty <br />clays and clayey silts to depths of 31/2 feet to 6 feet. These <br />soils have ~oderate expansion potential. Native alluvial soils <br />were encountered at depths 18 to 45 feet below the surface and <br />consisted primarily of soft dark gray to black silty clays. <br />These soils were also considered to have moderate expansion <br />potential. The moderate expansion potential of shallow soils <br />would be considered a geotechnical concern. Additionally, the <br />corrosion potential to buried steel is characterized as <br />primarily severely corrosive when wet. This could affect buried <br />utility lines and other support structures. To insure the <br />geotechnical stability of the proposed project, Final <br />geotechnical report with dgsign recommendations shall be <br />prepared. <br /> <br />Mitigations Measures <br /> <br /> A final design geotechnical report shall be prepared for <br /> the proposed project to provide structure-specific <br /> geotechnical recommendations. The final report shall <br /> address all issues initially covered in the Preliminary <br /> Geotechnical Report prepared for the Armstrong Ranch <br />Development Project. Final recommendations.on earthWork, <br />spread footings with slabs-on-grade, reinforced mat <br />foundations, post-tensioned mats, friction piles, .cathedral <br />retaining (basement) walls, and measures to address soil <br />corrosion shall be identified. The final report shall <br />specify foundation recommendations- to ensure issues <br />associated with underlying soft, compressible clay soils <br />are addressed. ConstruCtion of the project shall comply <br />with all recommendations in the final geotechnigal report. <br /> <br />Where sewers are not available for the disposal of <br />wastewater is the soil capable of supporting the use of <br />septic tanks or alternative wastewater disposal systems? <br /> <br />No Impact <br /> <br />The project site is located within urban setting where sewer <br />service is available. The proposed project would not require <br />septic tanks or alternative disposal systems. <br /> <br />3%.A. <br /> <br /> F g '76 <br /> <br /> <br />