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<br />circulation. All fill banks shall be graded at a 3:1 <br />s10pe un1ess engineering analysis can confirm that slopes <br />Up to a maximum of a 2:1 slope will not fail. Landslide <br />repair shall conform to the natural contour. <br /> <br />d. The pIan shall indicate any necessary grading of con- <br />struction access roads. Use of such roads shall be kept <br />to an absolute minimum and shall be subject to review and <br />approval by the Planning Director. <br /> <br />e. Grading and other land alteration for geotechnical or <br />hydrological reasons shall include careful <br />consideration of visual concerns. <br /> <br />f. 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 />15. Slope Stability <br /> <br />a. All landslides which may affect development areas shall <br />be identified, mapped, and catalogued by a geotechnical <br />engineer and certified engineering geologist and included <br />with any tentative application. <br /> <br />b. The depths and lateral dimensions of all bedrock land- <br />slides and large surficial slides which could impact the <br />development under static and seismic conditions shall be <br />determined by surface and subsurface methods which may <br />include drilling and/or trenching. <br /> <br />c. Prior to start of construction, a landslide repair plan <br />shall be prepared by a geotechnical engineer and <br />certified engineering geologist for repair of all on-site <br />landslides and all off-site landslides that could affect <br />development. Specific mitigation measures for each <br />landslide, such as limits of grading and locations of <br />subdrains, shall be provided on appropriate cross <br />sections. <br /> <br />d. If measures in the landslide repair plan would require <br />destruction of heritage trees, the Planning Director <br />shall be immediately notified. All reasonable options <br />should be explored, including possible loss of lots or <br />use of more elaborate engineering methods to minimize the <br />lose of heritage trees. <br /> <br />e. site drainage shall be controlled so that landslides can <br />be minimized. <br /> <br />Resolution No. PC-'1-9 <br />Pehruary 27, 1991 <br />