RENTON—Renton's South Treatment Plant is taking precautions in case there's major flooding caused by the weakened Howard Hanson Dam.
King County employees tested flood walls on Thursday that'll surround most the property. They're giant inflatable tubes made of rubber and filled with water.
Assistant Plant Manager Don Wickens says each tube weighs about 7-1/2 tons.
It's a pricey wastewater plant, so Wickens says they've got to keep the flood waters from reaching it. Wickens says, "It's over a billion to repair and replace the plant. It's well over a billion dollars."
Wickens says most of the plant is underground with tunnels. It treats about 110-million gallons of wastewater each day for east and south King County and runs 24-hours a day.
Wickens says they have cots, food and other supplies in the plant in case the flood waters surround the property.