Report: No conclusive blame of humans for canal oxygen levels

BELFAIR — Human sources of nitrogen no doubt contribute to low-oxygen problems in Southern Hood Canal, but federal and state officials say they will need more precise information before taking action under the Clean Water Act.

Other actions to reduce pollution and nutrients in Hood Canal — some voluntary and some regulatory — remain under discussion by the Hood Canal Coordinating Council, which includes county and tribal officials.

A new report by the U.S. Environmental Protection Agency and Washington Department of Ecology concludes that existing studies fail to show conclusively that nitrogen from septic systems, fertilizers and other human sources have caused Hood Canal’s oxygen levels to drop by 0.2 milligrams per liter — the threshold for legal enforcement.

Read the full Kitsap Sun Article here

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