Oregon Department of Environmental Quality (DEQ) found levels of cadmium, arsenic and chromium in Southeast and North Portland above environmental risk thresholds. DEQ deployed air monitors after a U.S. Forest Service study found heavy metals hot spots in local moss. The metals were linked to emissions from two local glass factories: Bullseye Glass and Uroboros Glass. In late January 2016, health experts from the Oregon Health Authority (OHA) were notified. They confirmed the levels exceeded benchmarks for possible long-term effects in people. The agencies alerted the public.
After meeting with DEQ, Bullseye agreed to suspend use of cadmium, arsenic and chromium, and Uroboros agreed to suspend use of cadmium and chromium (Uroboros was not using arsenic).
In April 2016, Governor Brown announced a new program, Cleaner Air Oregon
, to overhaul industrial air toxics regulations. This program is led by OHA and DEQ.