This property has a documented history as a public works and maintenance facility predating 1986. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.
This property has served as King County Metro Transit's power distribution headquarters and service garage, supporting the county's trolley bus fleet. In 1991, four underground storage tanks were removed and petroleum-impacted soil was excavated, with an estimated 600 cubic yards of potentially contaminated material identified at the site. Eight monitoring wells were installed and groundwater monitoring continued from 1991 through 2001; the site was re-evaluated in 2011 and 2013 due to insufficient remediation of the historical contamination. Cleanup work remains ongoing under the Standard Cleanup program. 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.
The petroleum contamination at this site is tied to underground storage tanks that were in service for decades before their 1991 removal — squarely within the era when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. Documented remediation expenditures here span more than two decades: tank removals, soil excavation, monitoring well installation, and long-term groundwater sampling, with additional investigation triggered years later by persistent contamination. Because cleanup is still underway, historical carriers whose CGL policies were in force during the tanks' operational life may be obligated both to recover past costs and to fund the remediation work 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
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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.


