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Kaiser Trentwood PCBs, Petroleum, and Metals Cleanup

SITE BACKGROUND

The Kaiser Trentwood site is located at 15000 East Euclid Avenue in the City of Spokane Valley, Washington.

Kaiser is currently conducting a Remedial Investigation and Feasibility Study at the site. The purpose of the Remedial Investigation is to gather more information to determine the nature and extent of PCBs, petroleum and metals contamination that may be in soil and groundwater.  The Feasibility Study will evaluate cleanup options.

The U.S. Government Defense Plant Corporation created the Trentwood facility in 1942 to produce aluminum for World War II aircraft. In 1946 Kaiser leased the facility and later purchased it along with the property. Kaiser Trentwood currently produces aluminum sheet, plate, and coil for aerospace and general engineering applications.

Materials used in past aluminum production included PCB oil, petroleum fuels, solvents, and chromium. Wastes generated as a result of past or present operations consist of wastewaters, chrome sludge, paint and solvent wastes, and black dross.

Several documented releases occurred at the Kaiser Trentwood site related to historical operations.  Kaiser conducted independent investigations and cleanup actions to address groundwater and soil contamination coming from these releases.  The contaminants found at the site include PCBs, petroleum product, and metals.  Studies showed that these contaminants at certain locations were above state and federal standards.

Cleanup is necessary for the following reasons:

• To reduce threats to human health and the environment.
• Contamination is close to the Spokane River, and cleanup will remove an exposure pathway to the river.
• Cleanup improves protection of surface and groundwater.

SITE DOCUMENTS

• Fact Sheet - May 24, 2007
• Draft West Discharge Ravine Interim Action Work Plan
• Table of Contents
• Introduction (text)
• Figure 1-1  Project Vicinity Map
• Figure 1-2  West Discharge Ravine Existing Conditions Map
• Interim Action Work Plan
• Applicable, Relevant and Appropriate Requirements
• Tables:
• Table 2-1  Surface Soil Sample Data
• Table 2-2  Analytical Results for Soil Samples
• Table 2-3  Grain Size Distribution
• Table 2-4  Particle Size Distribution
• Table 2-5  Summary of Alternatives
• Figures:
• Figure 1-1  Project Vicinity Map
• Figure 1-2  West Discharge Ravine
• Figure 2-1  Phase I Remedial Investigation
• Figure 2-2  Temporary Erosion
• Figure 2-3  WDR Excavation Plan
• Figure 2-4  Soil Transportation Plan
• Figure 2-5  WDR Backfill and Grading Plan
• Figure 2-6  Excavation and  Grading Typical Sections
• Figure 2-7  Soil Screening
• Figure 2-8  Details
• Appendix A: Sampling and Analysis Plan
• A-1  Pre-Interim Action Exportation
• A-2  Verification Sampling Location
• Attachment A-1  Quality Assurance Plan
• Table A-1-1  PCB Analytes, Criteria
• Table A-1-2  Petroleum Hydrocarbon Analytes
• Table A-1-3  Sample Containers, Preservation and Holding Times
• Table A-1-4  Summary
• Appendix B:  Health and Safety Plan Introduction
• Hazard Evaluation and Control Measures
• Protective Equipment
• Safety Equipment
• Exclusion Areas
• Minimization of Contamination
• Decontamination
• Disposal of Contaminated Material
• Site Security and Control
• Spill Containment
• Emergency Response Plan
• Medical Surveillance
• Training Requirements
• Reporting, Reports, and Documentation
• Substantive Permit Requirements
• SEPA Environmental Checklist
• Attachment 1
• Figure 1
• Figure 2
• Figure 3
• Figure 4
• Figure 5
• SEPA Determination of Non-Significance
  
  
  
• Responsiveness Summary:  Kaiser Trentwood Site - Agreed Order for a Remedial Investigation/Feasibility Study August 2005
  
• Fact Sheet - June 27, 2005
• Agreed Order for a Remedial Investigation/Feasibility Study
• Table of Contents
  Agreed Order (1411 kb)
  Exhibit A
  Exhibit B - Pages B1-B11 (910 kb)
                 Pages B17-B24
                 Table I
                 Appendix A
  Exhibit C - Public Participation Plan (1116 kb)
                 Appendix A
                 Appendix B
                 Appendix C (1588 kb)
                 Appendix D

Related Information

• Watershed Information for WRIA 57

Additional Resources

• Acronyms used by the Toxic Cleanup Program
• Cleanup Process: Major Steps & Definitions
• Data Submittal Requirements for All Cleanup Sites
• Facility/Site Atlas
• Toxics Cleanup publications