BROOKLYN - The Department of Environmental Protection is debuting two new trucks that can vacuum debris from the city?s largest sewers.

The vactor trucks collect up to 3 tons of sediment and debris each day through a 30-foot hose. Some of the items found in the sewers have been illegally dumped and range from bricks and construction materials to household mattresses.

A recent flood on Carroll Street was due to clogged sewer systems unable to catch rainwater. Representatives from the DEP say the trucks can clean old, clogged pipes and prevent such occurrences.

The two trucks will begin a two-year cycle of a program to clean 136 miles of sewer pipes.

The trucks cost $450,000.