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Ship tests new ballast water treatment system over Lake Superior

Published 09/08/2011, Lake County News Chronicle

Crews pumped a biocide into two of 10 ballast tanks in the Indiana Harbor as it left Gary, Ind., treating 1.8 million gallons of ballast water. The chemical then was neutralized with a second chemical as the boat moved across Lake Superior before releasing ballast in the Duluth-Superior harbor.

Word count: 566

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