Site work for a civil project in Sumner, Washington. Completed plans call for site work for a bridge / tunnel; and water / sewer project.

North of 60th Street E: Remove and salvage sheet piles. Install backflow preventer in the 32-inch CMP culvert under the private drive to prevent fish passage. Conduct grading within the Salmon Creek channel to remove debris in front of and behind the sheet piles. Rehabilitate the existing 32-inch CMP culvert under the private drive using slip-lining or Cured in Place Pipe. Rehabilitate the existing 24-inch Concrete culvert under Sumner-Tapps Highway that outfalls into the former creek South of 60th Street E: Rehabilitate the existing 36-inch CMP culvert under 60th Street E. North of 64th Street E: Salvage, clean, and stack the removed sheet within the pond fencing at the north end of the pond within the turn around area. Conduct filling and grading to transfer flow from the existing channel to the new channel. Rehabilitate the 24" CMP culvert under Sumner-Tapps Highway. BID DOCUMENTS ARE NOT YET AVAILABLE FOR DOWNLOAD. PURPOSE AND SCOPE OF WORK The purpose of this study was to gather and review available subsurface information, conduct field explorations to evaluate subsurface conditions at the site, and to provide geotechnical conclusions and geotechnical engineering recommendations for the proposed improvements. Our scope of work included conducting a site reconnaissance, drilling and sampling 14 exploratory borings, excavating and sampling 17 test pits, performing laboratory testing, and completing engineering analyses to develop the geotechnical conclusions and recommendations presented in this report. GeoDesign's scope of work did not include environmental assessments or evaluations regarding the presence or absence of wetlands.