National Pollutant Discharge Elimination System (NPDES)

Ballast Water Discharges into the Great Lakes from Overseas Vessels

Analysis of Ballast Water Discharges into the Great Lakes from Overseas Vessels from 2010 to 2013 - An assessment of the volume, location, and global port origins of ballast water discharges in the Great Lakes (May 2015).

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Analysis of Ballast Water Discharges into the Great Lakes from Overseas Vessels from 2010 to 2013 (PDF)(48 pp, 1 MB)