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B & L Woodwaste

SITE DESCRIPTION

The B& L Woodwaste landfill contains woodwaste, mixed with soil and Asarco slag, originating from log sort yards in Commencement Bay which were taken to this site for disposal in the mid-70s to early 80s.. The Asarco slag leached arsenic into the soils groundwater.  The landfill was capped in 1993 as required by a Consent Decree.  Recently, it was discovered that the capped site was releasing arsenic into nearby wetlands.

In response to this finding, Ecology entered into a Consent Decree with Murray Pacific Corp (Murray Pacific) which required the construction of a sub-surface wall around the landfill, pumping and treatment of wetland groundwater and other remedial measures. Murray Pacific developed an Engineering Design Report outlining the details of the first phase of these required actions.  For a full site history, visit this link.

Public Involvement Opportunities

Ecology wants to keep you involved! You will have the chance to review and comment on key documents during the investigation and cleanup process.  Documents will be at this web site and at the repository locations listed to the right as they become available.  Ecology has developed a Public Participation Plan which outlines how you will be kept informed and involved as this cleanup process moves forward.
  
The links to this document and other reports and fact sheets can be found below. Two additional engineering design reports will be created to implement the remaining phases of the cleanup.  The availability of these documents will be announced on this web site and also on the Site Register.

SITE UPDATE:  Work will begin this July to begin the next phase of cleanup at the site.  Construction of an underground barrier (slurry wall) will begin in mid July.  The wall will contain contaminated soils and keep groundwater from leaching out of the landfill.  This fall a groundwater treatment system will begin operating to remove contaminants from groundwater in an area next to the landfill.  For more information about the construction, see the frequently asked questions document below or contact Dom Reale, site manager (contact information to the right).

SITE DOCUMENTS

2009

• Frequently Asked Questions - July 6, 2009
• Fact Sheet


• Responsiveness Summary for the Engineering Design Report
• Final Engineering Design Report (EDR) - August 4, 2009
  
• EDR Text
• EDR Tables
• EDR Figures 1.1
• EDR Figures 2.1
• EDR Figures 3.1,
• EDR Figures 3.2
• EDR Figures 4.1
• EDR Figures 4.2
• EDR Figures 4.3

Appendix A: Arsenic Characterization Study Data Report

• Appendix A Text and Tables
• Appendix A Figures
• Attachment A1 : Analytical laboratory results
• Attachment A2: Analytical Laboratory results continued
• Attachment B: Boring Logs

Appendix B: Geotechnical Investigation Report

• Appendix B Text and Tables
• Appendix B Figures
• Appendix B Attachment B1–1: Boring Logs and core penetrometer test logs
• Appendix B Attachment B1-2: Boring Logs and core penetrometer test logs continued
• Appendix B Attachment B2 : Investigation-Derived waste documentation
• Appendix B Attachment B3: Laboratory Test reports

Appendix C: Phase 1 Hydrogeologic Study Report

• Appendix C: Text and Tables
• Appendix C: Figures 1 and 2
• Appendix C: Figures 3-5
• Appendix C: Figures 6-8
• Appendix C: Figures 9-24
• Appendix C Attachment 1: Boring logs
• Appendix C Attachment 2: Discharge Calculation worksheets
• Appendix C Attachment 3: Aquifer Test Solutions

Appendix D: Critical Areas Study

• Appendix D Text and Tables
• Appendix D Figure 1
• Appendix D Figure 2
• Appendix D Figure 3
• Appendix D – Appendix A Wetland Determination Methods
• Appendix D – Appendix B Wetland Delineation Forms
• Appendix D – Appendix B Wetland Delineation Forms continued
• Appendix D – Appendix C Wetland Rating Forms
• Appendix D – Appendix C Wetland Rating Forms continued 1
• Appendix D – Appendix D Site Photographs

Appendix E: Interim Compliance Monitoring Plan

• Reserved

Addendum 1: Phase 1 Part 1 Remediation Design Report: Barrier Wall and Groundwater Interceptor Trench

• Remediation Design Report text
• Remediation Design Report Tables
• Remediation Design Report Figures
• RDR Drawing Cover Sheet
• RDR Drawing - Site Plan
• Appendix 1A - Design Basis Memo
• Appendix 1B - Groundwater Modeling Memo
• Appendix 1C - Engineering Calculations
• Appendix 1C - Part 1
• Appendix 1C - Part 2
• Appendix 1C - Part 3
• Appendix 1C - Part 4
• Appendix 1C - Part 5
• Appendix D - Spill Prevention and Containment Plan
• Appendix E - Stormwater Pollution Prevention Plan
• Appendix F:  Construction Drawings and Specifications
• Appendix F - Part 1 - Drawings G1 and G2
• Appendix F - Part 1 - Drawings G3 and G4
• Appendix F - Part 2 - Drawings C1 through C4
• Appendix F - Part 2 - Drawings C5 through C8
• Appendix F - Part 2 - Drawings C9 through C14
• Appendix F - Part 3 - Drawings N, E and P
• Appendix G - Construction Quality Assurance Plan
• Appendix H - Health and Safety Plan
• Appendix I - Operation, Monitoring, Inspection and Maintenance Plan
• Appendix J - Performance Monitoring Plan

2008

• Fact Sheet
• Consent Decree: Murray Pacific Corporation
• Exhibit A - Final Cleanup Action Plan

  Exhibit A - Figures (Click to expand)

  • Figure 1 - Vicinity Map
  • Figure 2 - Site Map and Cross Section Locations
  • Figure 3 - Current and Projected Changes in Land Use in Site Vicinity
  • Figure 4 - Property Ownership
  • Figure 5 - Surrounding Land Use and WSDOT Proposed Relocation of Surprise Lake Drain
  • Figure 6 - WSDOT Existing and Future Mitigated Project for Hylebos Creek 100-Year
  • Figure 7 -  Topography and Drainage Features in Site Vicinity
  • Figure 8 - Cross Section F-F’ Site Hydrostratigraphy and Dissolved Arsenic Concentrations in Groundwater
  • Figure 9 - Cross Section E-E’ Site Hydrostratigraphy and Dissolved Arsenic Concentrations in Groundwater
  • Figure 10 -  Potentiometric Surfaces in Upper Sand Aquifer
  • Figure 11 - Extent of Dissolved Arsenic in the Upper Sand Aquifer
  • Figure 12 - Arsenic Concentrations along Agricultural Ditch System – Surface Water
  • Figure 13 - Arsenic Concentrations along Agricultural Ditch System – Sediments
  • Figure 14 - Cleanup Action Areas
  • Figure 15 - Conceptual Model of Potential Exposure Pathways and Receptors
  • Figure 16 - Preferred Remedy Components

  Exhibit A - Appendices (Click to expand)

  Text - Groundwater Alternatives Evaluation Report, Ecology Comments, & Tech Memos

  • Part 1
  • Part 2
  • Part 3
  • Part 4
  • Part 5
  • Part 6
  • Part 7

  Tables

  Figures

  Figure 1.1

  Figure 2.1

  Figures 2.2 to 2.5

  Figure 2.6

  Figure 3.1

  Figure 4.1

  Figure 6.1

  Figure 6.2

  Figure 6.3

  Figures 3.2 to 3.4

  Figures 3.5 to 3.8

  Figures 7.1and 7.2

  Appendix A - 2006 Data Report

  • Figure 1 and 2
  • Figure 3
  • Figures 4 and 5
  • Figures 6 through 10
  • Figures 11 through 16

  Appendix B - Drinking Water Exposure Pathway Factors

  Appendix C - Cost Calculations

  Ecology GAE Comments

  Tech Memos:

  • Aquitard Continuity Remedy Analysis
  • Figure 6
  • Figures 7 and 8
  • Figure 9
  • Arsenic in the Lower Sand Aquifer at B&L
  • Figure 1
  • Vertical Gradients at B&L

  • Exhibit B - Statement of Work
  • Exhibit C - Administrative Record
  • Exhibit D - Covered Substances
  • Exhibit E - Public Participation Plan
    
  • Exhibit F - Site Diagram
  • Exhibit G - Election to Create Trust