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1 <br />rVortechs <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />r <br />Inspection & Maintenance Log — Samplo <br />Model: 5000 <br />Location: Smith Superstores, Detroit, MI <br />Date <br />Water <br />Depth to <br />Sediments <br />Floatable Layer <br />Thickness2 <br />Maintenance <br />Performed <br />Maintenance <br />Personnel <br />Comments <br />12/1/01 <br />36" <br />0" <br />N/A <br />B. Johnson <br />Installed <br />311/02 <br />26" <br />Sheen <br />None <br />B.Johnson <br />Swept <br />parking lot <br />6/1/02 <br />24" <br />Heavy Sheen <br />None <br />9/1/02 <br />20"' <br />1" <br />Sorbenl pads <br />deployed to remove <br />captured oil <br />S. Riley <br />Oil spill <br />12/1/02 <br />12" <br />Sheen <br />None <br />S. Riley <br />4/1/03 <br />6" <br />0.5" <br />Clean -out scheduled <br />S. Riley <br />Heavy <br />floating <br />debris <br />4/15/03 <br />36" <br />0" <br />Grit Chamber <br />evacuated <br />ACE <br />Environmental <br />Services <br />Cleanout <br />completed <br />SAMPLE SHEET <br />110 <br />1. The water depth to sediment 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 />©2006 CONTECH Slonnwaler Solutions <br />r 2a3 <br />