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Conifer Apartments Septembcr 4, 1976 Page Two <br />extreme southern end of the western building. <br />Based on our previous aiork it was evident that the southern <br />ends of the to-�o southern buildings were constructed on fill overlyin9 <br />soft compressible soil. The perimeters of the buildings, with the <br />exception of the 1972 addition, apparently are supported on driven piles <br />v�hile the addition and the interiors of thc buildin9s are supported on <br />spread footings supported in the fill. A great deal of settlement has <br />occurred and there �s evidence of repeated shimming and shoring of the <br />foundations. 41e understand that the building interiors havic exper�enced <br />crack�ng and distortion of doors and windo��is which has been periodically <br />repaired. The addition at the southern end of the ��icstern building <br />has settled >�d pulled a���ay from tL•c buildin9. <br />It was our opinion that settlement �rould continue for a number <br />of years. 4;e recommended a detailed investigation of the subsurface <br />eonditions as � DdS75 for underpinnin9 ieco�rinend�tinn,. <br />EXPLORA7ION A�lU TCSTf��G <br />We exploi•ed subsurface conditions by drillin� five boi•inqs usinq <br />truck mounted power auger equipment. Two probings were made b,y hand ju�,t <br />cast of the apartment complex, and two borin9s were drilled by hand in <br />a modarately steep grassy section ��ihich could not be conveniently reaci� ! <br />by the truck mounted equipment. A total of 154.5' �•ias drilled. The <br />locations of the explorations are shown on the Plot Plan. The maximurn <br />de�th drilled tvas 39 feet. <br />The borin9s were located and continuously �onitr,�ed by a r�nrr- <br />sentative �f our firm who examined and classifie.: L��e soil, observ� ' <br />drillin9 behavior and groundwater levels, obtained samples represcn'. <br />tive of the soils and kept a log of the explorations. The soils �:r <br />identified and�described in accordance with the unified system �•rhicli i�, <br />described on Plate 2 of this report. Tlie boring logs, modificd to <br />reflect the results of laboratory testing of the samples, arc presented <br />�n Plates 3 throu9h 9. The probin9 results are indicated on tF.e Plot <br />Plan. 4Jith the po�ver equipment, a 140 poimd wei9ht falliny 30 inches was <br />Y <br />