MLC Riprap Scour Rehab - Walla Walla

The Corps of Engineers, Walla Walla District, proposes to repair a section of riprap that has eroded in the Mill Creek channel just downstream of the Mill Creek Diversion Dam (across from Rooks Park. A scour hole has developed in this area. The Contractor will be required to fill the scour hole with approximately 200 TON of placed, keyed-in, rip rap and other well graded stone that is Contractor provided. Although flows are expected to be low during the Construction period, the Contractor will need to divert water away from the construction area and may need to pump some water out of the hole to complete the work.
  Addendum #1 (click to expand/collapse)
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Amendment_0001,_W912EF19Q0031 186.8 KB
  Addendum #2 (click to expand/collapse)
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B.08.04_Amend_0002_-_RFQ_W912EF19Q0031 365.9 KB