Toxic Materials

By: Efrain Cruz

Toxic Materials have a big impact on earth they pollute our soil, land, and water.

Each year in the United States, we remove 400 million cubic yards of sediment from channels and harbors--the equivalent of a four- lane highway, 20 feet (6 m) deep from New York to Los Angeles. New York's harbor is naturally 18 feet deep, but most ships need at least 45 feet to clear. Many European super ships require a draft of 65 feet. Ship size continues to increase, so dredging is a continuing and growing necessity.