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it <br /> •�- (VAN. . <br /> 2.0 TANK CLEANING AND INSP�ECTION <br /> f <br /> it <br /> A detailed drawing of the tank is presented in" Figure 3. The tank is of <br /> reinforced concrete construction, baffled int o1l two chambers. The tank J <br /> cleaning began with IT Corporation Services Divlision <br /> pumping out the tank <br /> contents. Services personnel then pressure washed the interior surfaces of <br /> the tank using Bola`" industrial degreaser to remove residual motor oil . The <br /> tank contents and rinse solutions were removed, transported, and disposed of <br /> under proper uniform hazardous waste manifesting pro°f cedures to IT's Vine Hill <br /> Treatment Facility. The service work orders and predisposal analysis for the � <br /> tank contents are included in Appendix I. <br /> !! i <br /> After cleaning the tank, the IT Services foreman visually inspected the tank <br /> and reported observing no signs of distress in the tank construction (cracks, <br /> holes, or other structural problems) . Based on the foreman' s report of the <br /> integrity of the tank further sampling work was recommended and authorized to <br /> verify that the tank had not leaked. This work was considered essential in <br /> order to allow the continued serviceability of theltank. ' <br /> f <br /> a <br /> V <br /> ii <br /> s - { <br /> II <br /> • # 1 <br /> t4 <br /> ,! I <br /> i <br /> it <br /> J <br /> i t <br /> r M <br /> 1 <br /> • i <br /> i <br /> 2 <br /> E�NG:0551/02246 <br />