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7/9/2021 2019SWMMWW-BMP Maintenance Tables <br /> Table V-A.6: Maintenance Standards - Debris Barriers (e.g., Trash Racks) <br /> Maintenance Defect Condition When Maintenance is Needed Results Expected When <br /> Components Maintenance is Performed <br /> General Trash and Trash or debris that is plugging more than 20% Barrier cleared to design flow <br /> Debris of the openings in the barrier. capacity. <br /> Bars are bent out of shape more than 3 Bars in place with no bends <br /> inches. more than 3/4 inch. <br /> Damaged/ Bars are missing or entire barrier missing. Bars in place according to <br /> Missing Bars. design. <br /> Metal Bars are loose and rust is causing 50% <br /> deterioration to any part of barrier. Barrier replaced or repaired to <br /> design standards. <br /> Inlet/Outlet Debris barrier missing or not attached to pipe Barrier firmly attached to pipe <br /> Pipe <br /> https://fortress.wa.gov/ecy/ershare/wq/Permits/Flare/2019SWMMWW/2019SWMMWW.htm#Topics/VolumeV/App_BMPMaintenanceTables.htm?TocP... 1/1 <br />