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STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN <br /> Maintenance Defect Conditions When Maintenance is Results Expected When Maintenance <br /> Component Needed is Performed <br /> Catcbbaains- No condition present which would <br /> General,can't attract or support the breeding of <br /> insects or rodents. <br /> Structural Damage to Frame Frame is even with curb. <br /> and/or Top Slab <br /> Top slab is free of holes&cracks. <br /> Frame is sitting flush on top slab. <br /> • <br /> Cracks in Basin Walls or Basin repaired or replaced to design <br /> Bottom standards. <br /> No cracks more than%in.wide at <br /> the joint of inlet/outlet pipe. <br /> Settlement/misalignment Basin replaced or repaired to design <br /> standards. <br /> Fire Hazard No flammable chemicals present. <br /> Vegetation No vegetation blocking opening to <br /> basin. <br /> No vegetation or root growth present. <br /> Pollution No pollution present other than surface <br /> film <br /> 68"F-Cider than'k in.& <br /> longer than 1 ft.at the joint of <br /> any inlet or outlet pipe or any <br /> evidence of soil particles <br /> entering the atchb®m through <br /> cracks. <br /> Basin has settled > 1 in.or <br /> has rotated> 2 in.out of <br /> alignment <br /> Presence of chemicals such as <br /> natural gas,oil and gasoline. <br /> Vegetation growing across& <br /> blocking>10%of the basin <br /> opening. <br /> III-2-68 FEBRUARY, 1992 <br />