Science & EnvironmentColumbia River’s highly contaminated Bradford Island listed as a Superfund siteBy Monica Samayoa (OPB)March 17, 2022 10:38 p.m.The U.S. Army Corps of Engineers used the island near Cascade Locks as a toxic waste dump for decades.📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up