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8.A. - Page 41 <br />e) Recommendations to reduce impacts to the drainage improvements from <br />expansive soils; <br />f) Recommendations to reduce the potential for post -construction slope <br />instability in the vicinity of site improvements; <br />g) Recommendations for general site grading, including cuts, fills, and <br />corrective grading measures; and <br />h) Recommendations for stabilizing home sites by supporting the homes and <br />any site retaining walls on drilled piers. <br />Mitigation Measure Geology -3: The soils excavated for installation of the water <br />line at the property boundary between Lots 10 and 11 shall be re -graded to <br />original conditions unless the site-specific geotechnical report required by <br />mitigation measure Geology -2 recommends other measures for slope stabilization <br />of Lots 10 and 11. <br />Mitigation Measure Geology -4: The portion of the geotechnical report <br />addressing slope stability, required by mitigation measure Geology -2, shall be <br />submitted with the Tree Removal Permit application for review by the Redwood <br />City Landscape Architect. The recommendations specific to tree removal may <br />include, but not be limited to, the following: <br />• Recommendations for preventing soil creep and landslides during <br />construction, if necessary, such as temporary excavation support systems; <br />• Recommendations to reduce the probability of landslide and soil creep after <br />construction; and <br />• Recommendations for stabilizing slopes during the drilling of piers for <br />foundations. <br />Finding: Implementation of Mitigation Measures Geology -1 through Geology -4 would <br />reduce impacts from soil creep and soil instability to a less than significant level. <br />Facts in Support of Finding: Implementation of Mitigation Measure Geology -1 would reduce <br />impacts from soil creep and soil instability by requiring implementation of the <br />recommendations included in the geotechnical feasibility documents prepared for <br />the site. Implementation of Mitigation Measure Geology -2 would reduce impacts <br />by requiring completion of design -level geotechnical investigations for each lot <br />and the utility improvements on Laurel Way and implementation of the <br />recommendations in the investigation. Mitigation Measure Geology -3 would <br />minimize impacts from soil creep and soil instability by requiring re -grading of <br />soils at the boundary between Lots 10 and 11 to original conditions following <br />water line installation, or requiring other measures to achieve slope stabilization. <br />Mitigation Measure Gcology-4 would also reduce impacts from soil creep and <br />soil instability by requiring submittal of slope stability information from the <br />geotechnical report required by Mitigation Measure Geology -2 with the Tree <br />Removal Permit, for review by the Redwood City Landscape Architect, who shall <br />make recommendations, as necessary, to preserve slope stability. Impact 3.5-2 <br />and proposed mitigation are described on Draft EIR pages 3.5-12 through 3.5-15 <br />25 <br />