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Everett LDS Parking Lot Expansion <br />Storm Drainage Report <br />B.) Catch Basin Inserts <br />Maintenance Defect <br />Conditions When Maintenance Is Needed <br />Results Et per-ted When <br />Component <br />Maintenance is Performed <br />Catch Basin Sediment <br />When sediment forms a cap over the insert media of <br />No sediment cap on the insert <br />Accumulation <br />the insert and/ or unit. <br />media and its unit. <br />Trash and Debris <br />Trash and debris accumulates on insert unit creating <br />Trash and debris removed from <br />Accumulation <br />a blockage/ restriction. <br />insert unit. Run-off freely flows <br />into catch basin. <br />Inspection <br />Inspection of media insert is required. <br />Effluent water from media insert <br />is free of oils and has no visible <br />sheen. <br />Media Insert -Water <br />Catch basin insert is saturated with water, which no <br />Remove and replace media <br />Saturated <br />longer has the capacity to absorb. <br />insert <br />Media Insert -Oil <br />Media oil saturated due to petroleum spill that drains <br />Remove and replace media <br />Saturated <br />into catch basin. <br />insert. <br />General <br />Regular interval replacement due to typical average <br />Remove and replace media at <br />life of media insert product. <br />regular intervals, depending on <br />insert product. <br />P.Q006r06113 Everett Los Parking LOffax l6torm Reponat06113 Drainage Report Revered 01.10.06.doc Page 36 of 36 <br />