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b. The single-family custom lots shall be developed with rear yards which respect the <br /> natural contours of the land and avoid significant grading to create large flat yard <br /> areas. Grading outside the defined building envelope area shall be limited to landscape <br /> improvements. Except for the grading necessary for the building footprint or <br /> driveway, additional grading shall be subject to the criteria contained within the Moller <br /> Ranch Design Standards. <br /> <br /> c. Grading details shall be provided specifying the treatment of tops and ends of cut and <br /> fill slopes. The plan shall use grading techniques which will result in rounded contours <br /> to provide a smooth transition between-graded and natural areas. Every effort shall be <br /> made to reduce earthmoving requirements and areas of land disturbance. Any landform <br /> alteration shall maintain clear sight distances for traffic and non-motorized circulation. <br /> All fill banks shall be graded at a 3:1 slope unless engineering analysis can confirm <br /> that slopes up to a maximum of a 2:1 slope will not fail. Landslide repair shall <br /> conform to the natural contour. <br /> <br /> d. The plan shall indicate any necessary grading of construction access roads. Use of <br /> such roads shall be kept 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 hydrological reasons shall include <br /> careful consideration of visual concerns. <br /> <br /> f. Any subsequent tentative map shall not significantly increase the graded pertion of any <br /> lot from that shown on the approved PUD site plan/grading plan, except as modified <br /> heroin. <br /> <br />15. Slope Stability <br /> <br /> a. All landslides which may affect development areas shall be identified, mapped, and <br /> catalogued by a geotechnical engineer and certified engineering geologist and included <br /> with any tentative application. <br /> <br /> b. The depths and lateral dimensions of all bedrock landslides and large surficial slides <br /> which could impact the development under static and seismic conditions shall be <br /> determined by surface and subsurface methods which may include drilling and/or <br /> trenching. <br /> <br /> c. Prior to start of construction, a landslide repair plan shall be prepared by a <br /> geotechnical engineer and certified engineering geologist for repair of all on-site <br /> landslides and all off-site landslides that could affect development. Specific mitigation <br /> measures for each landslide, such as limits of grading and locations of subdrains, shall <br /> be provided on appropriate cross sections. <br /> <br /> <br />