Word: sedimenting
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...pleasure boaters were warned not to touch the water - and for good reason. Recent testing revealed the presence of heavy metals and pesticides, along with cancer-causing PCBs, concentrated in sediment at the bottom of the canal. The magnitude of the cleanup task seemed to call out for federal intervention. The EPA says its plan will take up to 12 years; the city's more modest plan was judged inadequate by federal officials...
According to local lore, Portuguese travelers as far back as the late 19th century suspected that oil might lie beneath parts of East Africa after noticing a thick, greasy sediment wash up on the shores of Mozambique. More interested in finding cheap labor, though, the explorers had little...
...Tibetan plateau and travels through five other countries before it empties into the South China Sea. According to the Mekong River Commission, a regional advisory agency, China has built or is planning to build eight dams along the Mekong. But while dams raise huge concerns about interfering with sediment flow and fish migration, they can also have a positive impact, says Jeremy Bird, the commission's chief executive officer. "They will redistribute the flow of water, therefore there will be more water available in the dry season," he says. But at the moment, with China also experiencing extreme drought, there...
...species of transparent sea cucumber found near Mexico. Feeds on sediment on the ocean floor...
Hydrant testing may disturb the sediment that naturally occurs in the water piping system. Water from your faucets and toilet may appear rust colored from this disturbance. Rust discoloration may last for several hours after the tests have been completed. Discolored water does not usually present a health hazard, however; it is recommended that anyone who has doubts about the rust colored water should not drink it. If you do not have bottled water, you may wish to store tap water in your refrigerator for the day of the test...