Science & EnvironmentHow we tested Columbia River salmon for contaminantsBy Tony Schick (OPB) and Maya Miller (ProPublica)Nov. 22, 2022 1 p.m.OPB and ProPublica collected 50 salmon and followed standard methods for fish tissue testing📨 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