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Region 10/8 Area-Wide Optimization Program  

The TSC optimization team, in partnership with EPA Region 10, led a program implementation meeting October 23-25, in Portland, OR.  Representatives from Washington, Oregon, Utah and EPA Region 10 attended the meeting and representatives from Montana, Colorado, Idaho and EPA Region 8 participated remotely.  The states provided updates on their optimization efforts and highlighted performance data and impacts of their programs toward enhancing public health protection. The event included a workshop on a modified filter backwash technique called extended terminal subfluidization wash (ETSW) at the Lake Oswego-Tigard water treatment plant. Discussion covered a range of topics, including: slow sand filtration optimization; training for small systems on reducing health-based violations (in support of the EPA initiative); and using water treatment plant alarms to support optimization. (Tom Waters, US EPA Technical Support Center)