Johnson Lake

Environmental Cleanup Site Information Number (ECSI):   2086
County:  Multnomah
City:  Portland
Region: Norhtwest  

Contact Information

Project Manager:  Jennifer Sutter
Phone: 503-229-6148
E-mail: 

Site Summary

Johnson Lake is an 18-acre lake located just west of I-205, north of NE Columbia Blvd, and south of the Columbia Slough. Sediment sampling has indicated the presence of PCBs, metals, petroleum, and polycyclic aromatic hydrocarbons in the lake. PCBs have also been detected in the tissue of fish collected from the lake. Owens Brockway, who owns the property along the southern edge of the lake has completed an investigation and feasibility study to lay the foundation for selecting a remedy to address the sediment contamination.

Current Documents and Supporting Information

• News Release
  Search for "Consent Judgment for Johnson Lake"
• Consent Judgment PDF
  • Attachment A: Site Location Map PDF
  • Attachment B: Conceptual Representation of Monitoring Well Locations PDF
  • Attachment C PDF
  • Attachment D: Remedial Design/Remedial Action Scope of Work PDF
  • Attachment E: Easement and Equitable Servitudes PDF
  • Figures 1-5 PDF
• Record of Decision Amendment PDF

Fact Sheets

• Investigation Update PDF
• Investigation Fact Sheet PDF

Record of Decision

• Complete Report PDF 1.5 MB
  • Report Only PDF
  • Figures Only PDF 1.3 MB
  • Tables Only PDF

Site Investigation

• Site Investigation Report PDF
  • Tables PDF
  • Figure 1 - Site Map PDF
  • Figure 2 - Sampling Locations PDF 1.1MB
  • Figure 3 - Aerial Imagery of Site PDF 1.6MB
  • Appendix A - Sediment Sampling Logs PDF
  • Appendix B - Database of Analytical Results PDF
  • Appendix C - Data Validation PDF 1.5MB
  • Appendix D - Sediment Toxicity Tests PDF

Risk Assessment Work Plan

• Risk Assessment Work Plan PDF
  • Tables PDF
  • Figure 1-1 - Site Location Map PDF
  • Figure 2-1 - Aerial Site Map PDF 8.6MB
  • Figure 2-2 - Historical Sampling Locations PDF 1.1MB
  • Figure 2-3 - March 2004 Sampling Locations PDF 1.1MB
  • Figure 3-1 - Current Zoning PDF 1.3MB
  • Figure 3-2 - Conceptual Site Model for Human Health Exposures PDF
  • Figure 4-1 - Conceptual Site Model for Ecological Exposures PDF
  • Figure 4-2 - Simplified Food Web PDF
  • Appendix A - Threatened and Endangered Species Review PDF

Investigation Work Plan

• Investigation Work Plan PDF
  • Tables PDF
    Summary of chemical concentration detected in sediment.
  • Figure 1-1 - Site Location Map PDF 1.5MB
  • Figure 2-1 - Aerial Site Map PDF 8.5MB
  • Figure 2-2 - Sediment Sampling Locations PDF 1MB
  • Figure 3-1 - Sediment and On-Site Soil Sampling PDF 1MB
  • Figure 3-2 - Proposed Sampling Zones PDF 5.2MB
  • Figure 4-1 - Current Land Use PDF
  • Figures 4-2 and 4-3 - Conceptual Site Model PDF
  • Attachments 1 and 2 - Comments and Response June 2003 PDF
  • Attachment 2-a - Sediments Guidance Compendium PDF 1.4MB
  • Attachments 2a1-2d - Ecological Assessment PDF 8MB
  • Attachments 3 and 4 - Comments and Response August 2003 PDF 1.7MB
  • Attachments 5 and 6 - Comments and Response December 2003 PDF

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