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I <br /> Page 10 TL 686-141-00 <br /> 8 . 3 Soil samples should be obtained from beneath the <br /> J <br /> piping , concrete lined sump , aad pump assembly box and <br /> analyzed for the presence and concentration of PCB and 1 <br /> oil and grease . <br /> t <br /> 8 .4 The near-surface soils , which appear to contain small <br /> concentrations of PCB , should, not be used to backfill t <br /> the excavation resulting from the removal of the <br /> underground transformer oil storage tank. <br /> 9 . 0 LIMITATIONS <br /> The analyses , conclusions , and recommendations in our report <br /> are based on site conditions as they existed at the time of our i <br /> investigation , and , further assumes that probes , such as ; <br /> exploratory borings ; are representative of the subsurface <br /> conditions at the site , i . e . the subsurface conditions everywhere <br /> I <br /> are not significantly different from those disclosed by the <br /> probes . <br /> } <br /> If different subsurface conditions from those encountered <br /> ` during our exploration are observed or appear to be present , we <br /> I4 � <br /> must be advised promptly so that we can review these conditions a <br /> and reconsider our conclusions and recommendations where <br /> necessary . <br /> If there is a substantial lapseof time between the <br /> submission of our report and the start of additional work at the <br /> . tte c�o�taro�rlee. �Qnt. y ' <br /> Fresno Modeslo Visalia Bakersfield ;` <br />