On Feb. 3, Oregon officials announced they'd found high levels of the hazardous metals arsenic and cadmium in the air near Bullseye Glass in Southeast Portland: 159 times the safety goal for arsenic, and 49 times the safety goal for cadmium. More toxic pollutants, more neighborhood hot spots and more potential sources have emerged since, prompting Oregon's two U.S. senators to call the situation a " public health emergency ."