Industrial & Manufacturing cleanup site — Restorical Research
Kaiser Aluminum & Chemical Corporation
15000 E Euclid Ave, Spokane, Spokane County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1950. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

The Kaiser Trentwood Works has operated as a heavy industrial aluminum manufacturing facility in Spokane since at least the 1950s, discharging industrial effluent wastewater to the Spokane River over decades of production. Cleanup efforts have focused on groundwater contaminated by PCBs and free product, with numerous monitoring, extraction, and skimmer wells installed across the site. A court-ordered Remedial Investigation and Feasibility Study is underway to address PCB-contaminated sediments in the Spokane River, and remediation work remains ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address15000 E Euclid Ave, Spokane, Spokane County
Historical UseIndustrial & Manufacturing
Est. Operating Since1950
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPolychlorinated biphenyls (PCBs) and free product detected in groundwater and river sediments
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7093

Why Historical Insurance Policies May Be Accessible

Pre-1986 Commercial General Liability (CGL) policies were occurrence-based and did not contain an effective pollution exclusion in Washington. If contamination occurred while those policies were active, those historical insurance carriers may still have a legal obligation to fund the cleanup costs, even if the business closed or the property changed hands.

PCB contamination and free-product releases at this facility trace back to industrial operations that were well established by the 1950s — more than three decades before occurrence-based CGL policies gave way to claims-made forms with absolute pollution exclusions. The scale of documented remediation here — extensive well networks, groundwater extraction, and a court-ordered study of river-sediment contamination — represents substantial past and future cleanup expenditures tied directly to those pre-1986 operations. Historical carriers who issued CGL policies during Kaiser Trentwood's early decades of industrial production may be obligated both to reimburse costs already incurred and to fund the remediation still ahead.

Restorical's role is to locate viable historical policies, determine whether a successful coverage claim is possible, and assist our clients and their legal counsel to obtain insurance coverage. Restorical then manages the claim, including accounting, to ensure the cleanup is funded in a timely manner.

What We Look For

  • Historical insurance policies (pre-1986)
  • Policy numbers, carrier names, and coverage periods
  • Connection between contamination timing and policy period
  • Evidence linking cleanup obligation to insured activity

What We Deliver

  • Historical Coverage Chart
  • Trigger Analysis & Property/Policy Nexus
  • Coverage strategy with recommendations
  • Insurance funding for your remediation
  • Claims Management & Forensic Accounting

The Restorical Proven Process

Task 1 — Research and Analysis
Restorical searches for viable historical insurance policies, researches the site history, analyzes the contamination impacts, and underwrites potential coverage — including a proprietary trigger analysis. At the end of Task 1, we provide a clear yes or no on whether a successful cost recovery is possible, along with a strategy and recommendation specific to your situation, even if you are not the policyholder.
Task 2 — Coverage and Funding
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim, negotiate and secure insurance coverage. Restorical will manage the ongoing claim process, including accounting to ensure the insurance companies are funding your remediation in a timely manner.

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This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.