Project Stages |
Many sediment projects follow a step-by-step process that typically starts with a scientific investigation of the area and can end with a cleanup.
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Dredging |
Dredging removes contaminated sediment from a waterbody so that it can be safely disposed of away from aquatic life. There are two main types of environmental dredging: mechanical and hydraulic.
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Dry Excavation |
Dry excavation is another method to remove contaminated sediment. Water is temporarily rerouted or drained from an area before sediment can be removed "in the dry."
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Caps and Covers |
Capping involves the placement of filtering material over contaminated sediment to create a protective barrier to aquatic life. This strategy is often used in combination with dredging or as an alternative when dredging is not feasible. Covers are simpler and typically consist of sand placement.
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Habitat Restoration |
Habitat restoration can include invasive species removal, native seed and plant installation, shoreline stabilization, and the installation of fish structures. Habitat restoration can be done alongside sediment remediation in GLLA projects.
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