CSO Water Quality Assessment

This study was completed in 1998 with help from a large stakeholder group and the Water Environment Research Foundation (external link).

King County Combined Sewer Overflow Water Quality Assessment for the Duwamish River and Elliott Bay, February 1999

Volume 1: Overview and Interpretation, February 1999, (8.4 MB)

• Contents of Volume 1 (22 KB)
• Appendix A: Problem Formulation, Analysis Plan, and Field Sampling Work Plan
  • A1: Problem Formulation, (2.7 MB)
  • A2: Analysis Plan, (937 KB)
  • A3: Field Sampling Work Plan, (1.2 MB)
• Appendix B: Methods and Results
  • B1: Hydrodynamic Fate and Transport Numerical Model for the Duwamish River and Elliott Bay, 4.7 MB
    • Table 3-3 (MS Excel file, 32 KB)
    • Appendices G through K are available as MS Word documents upon request
  • B2: Human Health Risk Assessment, (5.2 MB)
    • Tables 3-12 and 3-13 (MS Excel file, 53 KB)
  • B3: Wildlife Risk Assessment, (213 KB)
    • Tables 3-6 to 3-10 (MS Excel file, 58 KB)
    • Tables 3-11 to 3-15 (MS Excel file, 33 KB)
    • Tables 5-1 to 5-4 (MS Excel file, 807 KB)
    • Tables 5-5 to 5-8 (MS Excel file, 296 KB)
  • B4: Aquatic Life Risk Assessment, (2.6 MB)
    • Tables 3-1 to 3-28 (MS Excel file, 245 KB)
    • Tables 5-3 to 5-6 (MS Excel file, 46 KB)
• Appendix C: Issue Papers, (513 KB)

Volume 2: Public Information Document, August 1999, (4.2 MB)

Volume 3: Stakeholder Committee Report, January 1999, (224 KB)

Volume 4: WERF Peer Review Committee Report (not available online)