With deconstruction of the old Bay Bridge well underway, Caltrans says the tricky part may be removing the foundations that lie beneath the Bay. The agency Friday said it wants to use as many as 600 small explosions to demolish Pier E3. . . Environmental groups are skeptical. Baykeeper Staff Scientist Ian Wren said, "It could possibly creating a small toxic hot spot."
Caltrans considering underwater explosions to remove old Bay Bridge
KTVU 2 News