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Page 5 <br /> <br /> <br />For conservative purposes, a strengthened / stiffened foundation system as <br />recommended in this report should be used for support of the proposed structure. <br /> <br />Slope Stability <br /> <br />The site is a flat area; therefore, slope instability is not a concern for the proposed <br />development. <br /> <br />CONCLUSIONS AND RECOMMENDATIONS <br /> <br />General Conclusions <br /> <br />Construction of the proposed structure at the subject site is considered geotechnically <br />feasible, provided the recommendations outlined in this report are implemented. <br /> <br />Note: The conclusions and recommendations of this report are based on information as <br />interpreted from our limited subsurface investigation. It is not anticipated but they should <br />be revised accordingly if geotechnical conditions to be exposed during site preparation/ <br />grading and construction significantly differ from our findings and interpretations. <br /> <br />In general, a conventional shallow foundation can be used for support of the proposed <br />structure. <br /> <br />The following recommendations are considered minimum and may be superseded by <br />more restrictive requirements of the architect, civil/structural engineer, building codes, or <br />governing agencies. <br /> <br />Geotechnical Impact on Neighboring Properties <br /> <br />Adverse geotechnical impact of the proposed development on the neighboring properties <br />is not anticipated, provided the recommendations outlined in this report are properly <br />implemented. <br /> <br />Site Preparation/Grading <br /> <br />It is noted that without a proper treatment of the existing soils to support the proposed <br />ADU, substantial differential settlement may occur and cause distress to the proposed <br />ADU. <br /> <br />As normal, to create a relatively uniform new engineered compacted fill layer for support <br />of the proposed ADU, over-excavation and recompaction of minimum 3 ft. deep <br />(measured from the existing ground surface) of the existing soils located beneath the <br />proposed ADU area should be performed. The lateral limits of the over-excavation <br />should be minimum equal to depth of removal (3 ft. in this case) beyond the outside <br />perimeter of the proposed new structure. <br />2010 W Alco Ave Unit <br />#24/22/2025