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Catch basin (PDF)Infiltration trench/drainline (PDF)Trench drain (PDF)Drywell (PDF)Detention pond (PDF)Closed detention (manhole) (PDF)Control structure/flow restrictor (such as inside manhole) (PDF)Biofiltration (vegetated) swale (PDF)Wet vegetated swale (PDF)Wet ponds (series) (PDF)Filter strip (PDF)Bioretention (rain garden) (PDF)Energy dissipator (PDF)Debris barrier (trash rack) (PDF)Permeable pavement (PDF)(Please contact Sequim Public Works for other facilities.)
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