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OPERATION & MAINTENANCE MANUAL <br /> CATCH BASINS/MANHOLES <br /> Maintenance Defect Conditions When Maintenance is Desired Conditions <br /> Component Needed <br /> Catch Basin Cover Not in Place Cover is missing or only partially in place. Catch basin cover is closed. <br /> Cover Any open catch basin requires maintenance. <br /> Locking Mechanism Not Mechanism cannot be opened by I Mechanism opens with proper <br /> Working maintenance person with proper tools. Bolts tools. <br /> into frame have less than%"of thread. <br /> Cover Difficult to I Maint.person cannot remove lid after Mechanism opens with proper <br /> Remove applying 80 lbs of lift;intent is to keep cover tools. <br /> from sealing off access to maintenance <br /> personnel. <br /> Ladder Ladder rungs Unsafe Ladder is unsafe due to missing rungs, Ladder meets design standards <br /> misalignment,rust,cracks,or sharp edges. &allows maint.personnel safe <br /> access. <br /> Metal Grates(if Grate Opening Unsafe Grate with opening wider than 7/8" Grate meets design standards. <br /> applicable) <br /> Trash&Debris Trash&debris that is blocking more than Grate is free of trash&debris. <br /> 20%of grate surface. <br /> Damaged or Missing Grate missing or broken member(s)of the Grate is in place&meets design <br /> grate. standards. <br /> 3 <br />