Published: Tuesday, October 27, 2009
Corps uses 400,000 gallons of grout at Hanson Dam
SEATTLE — The Army Corps of Engineers has pumped nearly 400,000 gallons of grout into a leaky abutment at the Howard Hanson Dam on the Green River, southeast of Seattle.
That’s the figure given by Mamie Brouwer, program manager at the dam. The corps is hurrying to complete a grout wall within the abutment by Nov. 1 and the start of the winter rainy season.
The corps found the abutment at the flood control dam had a serious leak after record rains last January. Because of the leak, it can’t fill the dam’s reservoir as much as usual, raising the danger of flooding in the heavily developed Green River Valley downstream.
That’s the figure given by Mamie Brouwer, program manager at the dam. The corps is hurrying to complete a grout wall within the abutment by Nov. 1 and the start of the winter rainy season.
The corps found the abutment at the flood control dam had a serious leak after record rains last January. Because of the leak, it can’t fill the dam’s reservoir as much as usual, raising the danger of flooding in the heavily developed Green River Valley downstream.
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