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January 7, 2014
TRAVERSE CITY, Mich. — A federal agency sent Congress a list of alternatives Monday for shielding the Great Lakes from an invasion by Asian carp that could devastate native fish, including construction projects in Chicago waterways that could cost more than $18 billion and take 25 years to complete.
The U.S. Army Corps of Engineers declined to endorse a single plan after studying the matter since 2009, disappointing sponsors of legislation that ordered the agency to move faster. Instead, the Corps analyzed eight possible approaches featuring different mixtures of technology and structures such as locks, sluice gates, physical and electric barriers and water treatment systems.
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