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Vortechs System Inspection & Maintenance Log <br /> Model: Locatlon: I <br /> Water Floatable Maintenance Maintenance ` <br /> Date Deplh to Layer perfortned Personnel Comments <br /> Sediment� Thickness Z <br /> � <br /> � - _ — - <br /> I <br /> j � <br /> I ` <br /> � "_ � � . . _' Y7�.'� ;'' S Y�':. <br /> L� � . . ' . . . . <br /> I 1 The wjter depth to sediment is determined by taking hvo measurements with a stadia rod:one <br /> meas�rement from lhe manhole openir.g to the lop of the sediment pile and the other irom the <br /> manhole opening lo the water surface. When the diHerance belwaen Ihe two measuremenis is <br /> I six inches or less, the system should be cleaned out. <br /> 2. For optimum performence, the system sho�ld be cleaned out when the Ooating hydrocarbon <br /> layer accumulates lo an appreciable thickness. In lhe evenl of a spill, the system should be <br /> cleaned immediately. <br /> I �^200b CON7ECH Srormwater Solutions �19 <br />