Ohio toxic train derailment: How long could impacts last?

After a controlled burning of the hazardous waste from a portion of the derailed Norfolk Southern trains, some residents are wondering what the lasting impacts could be. SUBSCRIBE to ABC News: https://bit.ly/2vZb6yP WATCH MORE on http://abcnews.go.com/ LIKE ABC News on FACEBOOK: https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #abcnews #ohio #trainderailment #norfolksouthern