(Portland, OR) -- The Oregon Health Authority has released its final draft of a public health assessment on Portland's Bullseye Glass Company. In 2015, a U.S. Forest Service report showed heavy metals in moss collected near the plant. In 2016, air samples found elevated levels of heavy metals. Bullseye Glass was required to add filters to remove the metals including cadmium, arsenic, and chromium. Testing now shows the filters reduced future cancer risk 50 times and non-cancer risk 100 times.