On Monday, the U.S. Army Corps of Engineers began working on a berm that will allow workers to pump river water out of the Snohomish County mudslide that has left 33 confirmed dead. The northeast side of the mudslide is covered in five to ten feet of water and “we haven’t been able to see what’s under the water there,” said Owen Carter, Snohomish County deputy public-works director. Ten people are still listed as missing according to the medical examiner’s office. The latest name added to the list of dead is Billy L. Spiers, 30. His five-year-old daughter and 13-year-old stepson are also listed among the dead. His two-year-old daughter is still listed as missing.