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Portland Harbor Death Zone

Portland Harbor Death Zone | River Stuff | Scoop.it
In September 1934, average levels of dissolved oxygen in the stretch of Willamette River through the core of Portland Harbor was functionally zero. So what? Healthy aquatic ecosystems require certa...
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PCB hot spots pop up along Willamette River

PCB hot spots pop up along Willamette River | River Stuff | Scoop.it
Downtown Portland sites show levels averaging seven times normal for the toxic chemical
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