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It is, first and foremost, a visual and sound buffer placed between residents and the diesel trucks rumbling along the 103 Freeway to and from the Port of Long Beach.
But the wall, two fences stuffed with mulch generated from Long Beach tree trimmings, is also environmentally friendly; it will eventually be seeded with trees and shrubs that will leech vehicle exhaust from the air and transform the pollution into oxygen.
— presstelegram.com