An 11-year-old program that offers preventative dental hygiene to low-income children and seniors in the Puget Sound area is hoping to take their work on the road in their own mobile van soon.
Biologist David Baldwin pours a mixture of copper, zinc, lead and other pollutants into a large tank of water at the Suquamish Tribe’s Grovers Creek Hatchery, then slips four adult coho salmon into the dirty brown liquid. The poisonous soup he creates is aimed to simulate the kind of stormwater runoff to which salmon are frequently exposed, especially in urban streams.
