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Washington State University

Stormwater runoff from roadways kills coho salmon in hours, study finds

SEATTLE _ A new study shows that stormwater runoff from urban roadways is so toxic to coho salmon that it can kill adult fish in as little as 2 1/2 hours.tmpplchld But the research by Seattle scientists also points to a relatively easy fix: filtration through a simple, soil-based system.tmpplchld "It's basically ... letting the Earth do what it does so well, what it has done for eons: cleaning things up," said Julann Spromberg, a toxicologist for the National Oceanic and Atmospheric Administration and co-author of the report published this week in the Journal of Applied Ecology.tmpplchld Scientists have long suspected that the mixture of oil, heavy metals and grime that washes...