Sediment remediation projects 

To address sediment issues, King County is collaborating with other agencies and organizations (external link) to clean up the following contaminated sites in Elliott Bay and Duwamish Waterway:

• Denny Way CSO Sediment Remediation Project 
• Duwamish/Diagonal Sediment Remediation Project 
• Norfolk CSO Sediment Remediation Project 
• King Street CSO Sediment Remediation Project
• Lander/Hanford CSO Sediment Remediation Project
  (two CSO sites combined into one project)
• Brandon CSO Sediment Remediation Project
• Pier 53-55 Sediment Remediation Project