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I <br />I <br />I <br />Vortechs System Inspection & Maintenance Log <br />Model: Location: <br />Water Floatable Maintenance Maintenance Dale Depth to Layer Comments <br />Sedimentl Thickness 2 Performed Personnel <br />"m water aepm to sedment is determined by taking two measurements with a stadia rod: one <br />measurement from the manhole opening to the top of the sediment pile and the other from the <br />manhole opening to the water surface. When the difference between the two measurements is <br />six inches or less, the system should be cleaned out. <br />' 2. For optimum performance, the system should be cleaned out when the floating hydrocarbon <br />layer accumulates to an appreciable thickness. In the event of a spill, the system should be <br />cleaned immediately. <br />I <br />02006 CONTECH Stormwater Solutions <br />119 <br />3 44- 3 <br />