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Silver Lake Plaza <br />T�hhn 11-A_ti_9«1 Maintenance Standards - Catch Basins (continued) <br />Results <br />ExpectedWhen <br />Maintenance <br />Defect <br />Conditions When Maintenance is <br />Main - <br />Component <br />Needed <br />tenance is <br />performed <br />Working <br />frame have less than 1/2 inch of thread. <br />proper tools. <br />One maintenance person cannot remove lid <br />Cover can be <br />Cover Difficult <br />after applyi ng normal lifting pressure. <br />removed by <br />one main - <br />to Remove <br />(Intent is keep coverfrom sealing off access <br />tenance per - <br />to maintenance.) <br />son. <br />Ladder meets <br />design stand <br />Ladder is unsafe due to missing rungs, not <br />ards and <br />Ladder <br />Ladder Rungs <br />securely attached to basin wall, mis- <br />allows main - <br />Unsafe <br />alignment, rust, cracks, or sharp edges. <br />tenance per- <br />son safe <br />access. <br />Grate open - <br />Grate opening <br />Grate with opening wider than 7/8 inch. <br />ing meets <br />design stand- <br />Unsafe <br />ards. <br />Metal Grates <br />Trash and <br />Trash and debris that is blocking more than <br />Grate free of <br />trash and <br />(IfApplic- <br />Debris <br />20% of grate surface inletting capacity. <br />debris. <br />able) <br />Grate is in <br />Damaged or <br />Grate missing or broken member(s) of the <br />place and <br />Missing. <br />grate. <br />meets design <br />standards. <br />WESTERN ENGINEERS, INC. 39 PROJECT: 15-1415-A <br />