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AET g20-02044 - Page 16 <br /> <br />Observation and Testin <br /> <br />The recommendations in this report are based on the subsurface conditions found at our test boring <br />locations. Since the soil conditions can be expected to vary away from the soil boring locations, <br />we recommend on-site observation by a geotechnlcal engineer/technician during construction to <br />evaluate these potential changes. Soil compaction testing should be performed on new fill placed <br />in order to document that project specifications for compaction have been satisfied. <br /> <br />SUBSURFACE EXPLORATION <br /> <br />General <br /> <br />The geotechnical exploration program for the Project consisted of drilling fourteen standard <br />penetration test borings at the site. These borings were drilled at the site from February 25 <br />through February 28, 2002. The boring locations and surface elevations were measured by the <br />project surveyors. <br /> <br />Driiline Methods <br /> <br />The borings were drilled with an all-terrain mounted rig using 3.25" diameter hollow stem augers. <br /> <br />Sampling Methods <br /> <br /> Disturbed Samples (DS) <br /> <br />Hollow-stem auger samples (disturbed samples) were collected in the surface soils in general <br />accordance with ASTM:D1452. The samples were taken by drilling the hollow-stem auger into <br />the soil, stopping at regular intervals to allow the soil to spin to the surface from that depth. Only <br />disturbed samples are retrieved using this method, therefore, the depths and thicknesses of the <br />different soil layers should only be considered approximate. <br /> <br /> <br />