This property has a documented history as a landfill going back to 1920. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.
The DuPont Landfill accepted household wastes, plant and yard debris, car parts, appliances, ceramics, and scrap metals from the 1920s through the 1960s. Soil and groundwater contamination has been identified at the property, but no remediation has commenced and no active cleanup process is currently underway. The site remains in the Awaiting Cleanup stage under Standard Cleanup, with the full scope of investigation and remediation still ahead. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.
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.
This landfill's waste stream — car parts, scrap metals, and appliances deposited across four decades ending in the 1960s — is exactly the kind of slow-accumulating, mixed-source release that Commercial General Liability policies written for operators and commercial waste depositors during that era were designed to address. Those policies predate the post-1986 pollution exclusions by as much as six decades, and Washington courts have repeatedly found them enforceable against such historical releases. Because no cleanup costs have yet been incurred here, the full financial exposure — site investigation, remedial design, and eventual remediation — remains ahead, and historical carriers whose policies covered landfill operations during the active decades may be obligated to fund it.
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
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Contact UsThis analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.


