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5/7/2021 2019SWMMWW-BMP Maintenance Tables <br /> Results <br /> Maintenance Expected When <br /> Components Defect Conditions When Maintenance is Needed Maintenance is <br /> Performed <br /> Internal: <br /> Worn or Structure dissipating flow deteriorates to 1/2 of original Structure <br /> Damaged Post, size or any concentrated worn spot exceeding one square replaced to <br /> Baffles, Side of foot which would make structure unsound. design standards. <br /> Manhole/Chamber Chamber <br /> See Table V-A.5: <br /> Other Defects See Table V-A.5: Maintenance Standards - Catch Basins Maintenance <br /> Standards- <br /> Catch Basins <br /> https://fortress.wa.gov/ecy/ershare/wq/Permits/Flare/2019SWMMWW/2019SWMMWW.htm#TopicsNolumeV/App_BMPMaintenanceTables.htm%3FT... 6/6 <br />