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Libby officials outline repairs, testing timeline as boil order remains after Dec. flood
Summary
City officials described extensive flood damage to the Lower Flower Creek reservoir and intake system, emergency bypasses and a planned cofferdam; officials said daily testing and sediment removal aim to convince DEQ to lift the boil order and move to a health advisory soon.
City officials told the Libby City Council that emergency work to stabilize the Lower Flower Creek intake and restore head pressure after a Dec. 11 storm should allow officials to begin focused testing and, within days to weeks, seek to downgrade the community's boil order.
The City Administrator briefed the council on extensive damage to the northern retaining and wing walls at the lower reservoir and explained how overtopping and scour increased turbidity and caused a groundwater "boil" that washed sediment into the intake. As a temporary measure, crews removed intake boards, installed a bypass pipeline and constructed a temporary copper-style cofferdam and orange bypass line to route water to the plant while protecting works in the lower basin.
"We're gonna try to get that reduced to a health advisory by the…
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