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AET #94-2069 - Page 2 <br />CONCLUSIONS <br />Based on the results of our observations and hand auger borings, it is our judgment the soils <br />finally exposed in the observed foundation excavation bottoms for the residence were suitable <br />for support of the anticipated fill and foundation loadings. Although the soils were competent, <br />it was our opinion they could easily become disturbed due to influx of groundwater into <br />excavations. We recommended precautions be taken to prepare the foundation areas, as <br />indicated in the following section. <br />"Riese conclusions are intended as a summary. Read the remainder of the report for specific <br />information. <br />RECONLyIENDATIONS <br />We recommended all fill and swamp deposits be removed from the foundation areas. The <br />excavation bottom should expose the naturally deposited alluvial sands. The excavation should <br />be deep enough to allow placement of at least a V thick layer of 3/4" or 11h" screened (clear) <br />rock or stone. The rock should be completely encapsulated in geotextile filter fabric to reduce <br />the potential for intrusion of the surrounding soils into the porous rock matrix. <br />We recommend 1:1 oversizing of the excavation bottom. That is, the excavation should be <br />widened, beyond the edges of the foundations, a distance equal to the depth of fill at that <br />location. <br />DESIGN INFORMATION <br />We understand the proposed residence will: <br />