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<br />d. Any subsequent tentative map shall not significantly <br />increase the graded portion of any lot from that shown on <br />the approved PUD site plan/grading plan, except as <br />modified herein. <br /> <br />e. Any grading outside the approved building envelope shown <br />on the approved tentative map shall be a PUD Major <br />Modification subject to review by the city Council. <br /> <br />8. Unstable Slopes and Landslide Areas <br /> <br />The applicant shall mitigate the conditions of unstable slopes <br />and landslides as stated in the Environmental Impact Report <br />and soils report for the project. Such mitigation measures <br />shall include the following: <br /> <br />a. The location, depth, and lateral dimensions of all <br />bedrock landslides, surficial slides, and areas with a <br />high potential for slope instability and future slope <br />movement shall be identified, mapped, and catalogued by <br />a geotechnical engineer and certified engineering <br />geologist. This work shall include performance of <br />surface and subsurface investigation (drilling and/or <br />trenchingl and preparation a detailed geological map to <br />be made part of the preliminary grading plan. <br /> <br />b. Provide data and analysis of slope stability in a <br />saturated condition. Analysis shall include laboratory <br />strength tests and shall be based on saturated strength <br />values and shall consider the increased hydrostatic <br />pressure on natural slopes due to landscape irrigation. <br /> <br />c. with submittal of the tentative map and preliminary <br />grading plan, the applicant shall submit a landslide <br />repair plan prepared by a geotechnical engineer and <br />certified engineering geologist recommending measures for <br />stabilizing slopes and repairing all on-site landslides <br />and, if identified, all off-site landslides that could <br />affect this development. These measures shall be <br />incorporated in the grading plan for review by the <br />Planning Commission and shall include detailed sections <br />showing limits of the stabilization work and detailed <br />specifications for performance of the stabilization work. <br /> <br />The following standards shall be incorporated in the <br />landslide repair and slope stabilization plan: <br /> <br />No heritage trees shall be destroyed for landslide <br />repair; removal of non-Heritage trees for landslide <br /> <br />Resolution No. PC-91-19 <br />March 13, 1991 <br />