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<br />days of the completion of grading. <br /> <br />Landslides in undeveloped areas that are not a <br />hazard to development shall be left natural and <br />shall not be repaired. <br /> <br />e. If the concerns stated below are not covered by a <br />Lighting and Landscape Maintenance district, then the <br />entire site covered by this development plan shall be <br />incorporated into a geological hazards abatement district <br />for the repair and on-going maintenance of landslides, <br />unstable slopes, drainage systems, catch basins, <br />siltation ponds, and other geologic hazards. <br /> <br />9. Differential Fill <br /> <br />The applicant shall mitigate the problems of differential fill <br />settlement as described in the EIR. The following mitigation <br />measures shall be incorporated into the project: <br /> <br />a. A geotechnical engineer and certified engineering <br />geologist shall provide detailed recommendations and <br />plans for site-specific cut and fill slope gradients, <br />stripping, preparation of sub-grade to receive fill <br />(including "keying", benching, and construction of <br />subsurface drains under fill placed on slopes) , <br />acceptable fill material, and fill placement requirements <br />(including method of placement and degree of fill <br />compaction). These recommendations and plans shall be <br />incorporated in the preliminary grading plan as required <br />by the city Engineer. <br /> <br />b. Existing fill located north and west of Bernal Avenue not <br />properly placed or compacted shall be removed and <br />replaced with engineered fill. However, properly placed <br />fill that is determined to be adequate to support a <br />structure with no damaging settlement may remain. <br /> <br />c. The applicant shall implement the recommendations and <br />plans addressing differential fill during grading. The <br />geotechnical engineer and certified engineering geologist <br />shall provide continuous inspection during grading to <br />ensure the recommendations and plans are followed. A <br />compliance report prepared by the geotechnical engineer <br />and certified engineering geologist to the city Engineer <br />30 days after completion of grading. <br /> <br />10. Expansive Soils <br /> <br />The applicant shall mitigate the problems of expansive soils <br />and corrosivity as stated in the EIR. Such mitigations shall <br /> <br />Resolution No. PC-91-19 <br />March 13, 1991 <br />