This property has a documented history as a gasoline service station going back to 1933. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.
This property has operated as a service station since 1933 and remains an active Shell-branded fueling facility at the corner of South Dearborn and Airport Way South in Seattle. Cleanup activities under the Voluntary Cleanup Program have included excavation of former underground storage tanks, well abandonment, and operation of a waste and groundwater treatment system. Groundwater monitoring has been ongoing since at least 1991 and continued through 2015, with investigation-derived waste from monitoring activities managed and disposed of throughout that period. 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.
Petroleum contamination at this site traces to fueling operations that began more than five decades before 1986 — groundwater samples showing detectable total lead confirm the use of leaded gasoline, a product phased out well before the mid-1980s. Occurrence-based CGL policies issued to the station's operators during those pre-1986 decades carried no effective pollution exclusion under Washington law. The documented remediation expenditures here — tank removals, groundwater treatment, and over two decades of monitoring — represent costs that historical carriers may be obligated both to reimburse and to fund as cleanup continues.
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
Ready to learn more?
Contact UsThis analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.


