Spurred by a few recent studies, InvestigateWest’s Robert McClure and KCTS-Seattle’s Jenny Cunningham launched an investigation to figure out just what has made Puget Sound’s air some of the most toxic in the nation. Their work centered on the heavily polluted, industrial Seattle neighborhoods of Georgetown and South Park, where residents “face an onslaught of toxic airborne pollutants that according to a recent study exceed regulatory caution levels by up to 30 times.”
Where is this toxic air coming from? The answer may surprise you. The majority of the pollution, government regulators and scientists say, comes not from the large concentration of industrial facilities in South Park and Georgetown. Rather, it’s from the cars, trucks and buses whizzing by these neighborhoods – especially those with diesel engines. Fumes from ships in Elliott Bay and the Duwamish, as well as diesel-powered equipment at the Port of Seattle and elsewhere, add to the toxic mix. In the fall and winter, wood smoke from fireplaces becomes a significant contributor.
The problems here have implications in other neighborhoods, too: Anywhere people are living close to major roadways, they’re likely breathing unhealthy air, studies show. Anyone living within about 200 yards of a major roadway is thought to be at increased risk, with the first 100 yards being the hottest pollution zone.
Reporters looking to localize the story will probably want to scroll first to the “The Effects” section, which gets into the practical science of how this sort of pollution takes its toll. You’ll probably also enjoy Cunningham’s sidebar on what she learned in reporting the piece (it’s at the bottom of the page). If you’re also looking to understand the regional and national regulatory structure which governs diesel and related emissions, the “Solutions” subheading is also worth a pit stop.
For more on the big picture issues impacting health in South Seattle, see Carol Smith’s recent piece on the related Superfund site.