This property has a documented history as a gasoline service station predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.
This property at Dallas Ave S & S Thistle St in Seattle is a historical gas station site where underground storage tanks were removed in 1984, and leaded gasoline contamination has been documented. Site investigations have also confirmed halogenated solvents in groundwater above cleanup levels, with tetrachloroethylene (PCE) detected at concentrations up to 3,300 µg/L in the Dallas Ave S right-of-way; trichloroethylene (TCE), dichloroethylene (DCE), and vinyl chloride may also be present as degradation products. The site is currently awaiting cleanup under Washington's 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.
Underground storage tanks removed from this property in 1984 were installed and operated years before that date, placing the site's commercial operations squarely in the era of occurrence-based CGL policies with no effective pollution exclusion. The documented contamination — leaded gasoline from historical fueling operations and PCE-family solvents confirmed in groundwater far above cleanup levels — represents environmental releases tied to that pre-1986 operational window. With the site still awaiting cleanup, the full cost of investigation and remediation ahead could plausibly be pursued through historical carriers whose policies were in force when these releases first occurred.
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.