Arsenic, copper, lead and PCBs were found in the soil, sediment and water.
Fresh river water, carrying its rich load of sediment, no longer reaches and replenishes the Delta.
The large bottle is served slightly on its side in a wicker basket so the sediment can sink to the bottom.
1540s, "matter which settles at the bottom of water or other liquid," from Middle French sédiment (16c.) and directly from Latin sedimentum "a settling, sinking down," from stem of sedere "to settle, sit" (see sedentary).
sediment sed·i·ment (sěd'ə-mənt)
Insoluble material that sinks to the bottom of a liquid, as in hypostasis.