This property has a documented history as a landfill going back to 1900. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.
This Seattle property served as a municipal and industrial landfill from the early 1900s through the 1950s, receiving garbage, organic material, crushed brick, and industrial waste mixed with fill soils — a common disposal practice of that era. An automobile towing operation followed, applying "black oil #3" for dust control through the late 1980s and adding a petroleum contamination layer on top of the landfill-derived waste. Investigations conducted from 1988 to 1990 confirmed the contamination; the property has been on Washington's contaminated sites list since 1991, and preliminary work has included soil excavation and off-site disposal, installation of a passive methane collection and venting system, and engineered capping of remaining contaminated areas. 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.
Contamination at this property traces to two pre-1986 sources spanning nearly a century of combined activity: five decades of landfill-deposited municipal and industrial waste now manifesting as methane generation and chemical residues, and petroleum contamination from a towing operation that continued applying black oil through the late 1980s. Both contamination pathways were active during the era when occurrence-based CGL policies covering these operations carried no effective pollution exclusion in Washington. The investigation, remedial design, and cleanup costs the property owner now faces — addressing landfill-derived methane, impacted soils, and capped waste deposits — could plausibly be funded by historical carriers whose policies were in force across those decades of operation.
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.


