Columbia Slough Sediment Cleanup ProjectJanuary 21, 2025BackgroundCleanup PlanUpland Source ControlFish AdvisoryNatural RecoveryLong-Term MonitoringCleanup SummaryNatural Resource EnhancementsSlough Sediment Cleanup Overvi...TimelineContactsSources Cited01 / 08Slough Sediment Cleanup OverviewColumbia Slough Inwater01 / 09Timeline