St Johns Landfill

Environmental Cleanup Site Information Number (ECSI):   164
County:  Multnomah
City:  Portland
Region: Northwest  

Contact Information

Project Manager:  Bob Williams
Phone: 503-229-6802
E-mail: 

Site Summary

The St Johns Landfill in North Portland, which operated from 1932 until its closure in 1991, was filled mainly with municipal and industrial solid waste. The landfill is now owned and managed by METRO and is undergoing a remedial investigation and study of possible cleanup actions under a consent order with DEQ. The landfill is part of the Smith and Bybee Wetlands Natural Area and is bound on the north, south and east by the main stem of the Columbia Slough or its secondary channels. Groundwater quality around the landfill has been monitored since the 1970s and continues under Metro's site management along with sampling of sediment in the Columbia Slough and leachate from the landfill perimeter. The landfill's long-term regulation is administered under separate DEQ permits for solid waste management, air quality and water quality.

Current Documents and Supporting Information

Project Documents

• Groundwater Quality Data Evaluation PDF
  • Figures
    • Figure 1 - Vicinity Map PDF
    • Figure 2 - Monitoring Well Locations PDF
    • Figure 3 - Conceptual Hydrogeologic Cross Section PDF
    • Figure 4 - Upper OBS Wells Showing Leachate Influence PDF
    • Figure 5 - Middle OBS Wells Showing Leachate Influence PDF
    • Figure 6 - Lower OBS Wells Showing Leachate Influence PDF
    • Figure 7 - CRS/PG Wells Showing Leachate Influence PDF
    • Figure 8 - Proposed Monitoring Wells Locations PDF
  • Tables PDF
• Remedial Investigation Sediment Sampling and Analysis Plan PDF
  • Attachment A PDF
  • Figure 1 - Site Location Map PDF
  • Figure 2 - Sediment Sampling Locations Map PDF
• Project Status Report PDF
• Closure Permit PDF
• Feasibility Study: Scope of Work PDF
• Consent Order PDF

[print version]