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Coverage of the 2003 Operations Challenge competition as it appeared in the December 2003 issue of Water Environment & Technology magazine.
Coverage of the 2005 Operations Challenge competition as it appeared in the December 2005 issue of Water Environment & Technology magazine.
Coverage of the 2013 Operations Challenge competition as it appeared in the December 2013 issue of Water Environment & Technology magazine.
Coverage of the 2020 Operations Challenge competition, which was held virtually, as it appeared in the December 2020 issue of Water Environment & Technology magazine.