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8. GEOLOGY, SOILS, GRADING AND DRAINAGE <br /> 8-1: Slope Stability Analyses <br /> <br /> As part of the requirements for issuance of the tentative map, <br /> the geotechnical consultants shall conduct a series of slope <br /> stability analyses for critical cut slopes, fill slopes, and <br /> natural slopes, in order to determine their stability under <br /> long-term static and short-term seismic loads. The analyses <br /> must incorporate saturated, residual shear strength <br /> parameters, as presented in the geotechnical report prepared <br /> by Berlogar Geotechnical Consultants (1990), reasonable and <br /> defensible groundwater level assumptions based on future <br /> groundwater scenarios, and rational seismic coefficients <br /> derived from the data presented in the geotechnical report. <br /> <br /> 8-2: Detailed Slope Stabilization Proqram <br /> <br /> 'AS part of the tentative.map submittal, all landslides and <br /> areas with a high potential for slope instability shall be <br /> categorized as to the potential effect on development. The <br /> project geotechnical engineer and/or engineering geologist <br /> should provide recommendations for stabilization of thes~ <br /> landslides. This shall include all landslides and potential <br /> landslides on-site and all those landslides off-site that may <br /> impact on-site development. This work should include <br /> preparation of a detailed geologic map and performance of a <br /> subsurface investigation within each area with a high <br /> potential for future slope movement. This work is subject to <br /> the peer review process per City standards. <br /> <br /> 8-3: Landslide Stabilization <br /> <br /> A detailed construction plan shall be prepared for the <br /> stabilization of all on-site landslides and potential <br /> landslides, and all off-site landslides that may affect the <br /> development or adjacent off-site developed areas, by the <br /> project geotechnical engineer and/or engineering geologist. <br /> The construction plans shall include detailed sections and <br /> plans showing the limits of work along with detailed grading <br /> specifications for performance of the stabilization work. All <br /> landslides and potential landslides which could affect the <br /> proposed development should be stabilized by the developer <br /> before any of the individual lots are sold. <br /> <br /> Page 10 of 19 <br /> <br /> <br />