The study that ignited a firestorm in SE Portland – the U.S. Forest Service released its long-anticipated tree moss report today.
Cheaper than instrument air monitors, hundreds of tree moss samples were taken around Portland. The results led to clear pinpointing of toxic metal emissions where regulators had only suspicions previously.
Since word first broke of the study and the hotspots around glass manufacturers it showed, almost non-stop attention has been focused on the DEQ, the surrounding neighborhood and local elected officials as they came to terms ...
When Bullseye Glass said they would stop using Hexavalent Chromium, or Cr(VI), but they would keep using trivalent chromium, or Cr(III), something didn’t make sense. Robert Thompson, a SE Portland resident, and scientist with a degree in environmental engineering, felt more research was in order. What he found was startling.
Thompson’s research led him to create a hypothesis about how trivalent chromium could convert to hexavalent chromium in a glass furnace.
A casual internet search and the Environmental Protection Agency (EPA) website states that hexavalent ...