This property has a documented history as a gasoline service station going back to 1956. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
Shell Oil Company operated a gasoline service station on the southeast corner of this property from approximately 1956 to 1974, with four underground storage tanks and three pump islands dispensing fuel during that period. Weathered gasoline contamination — identified as BTEX and TPH-G — was detected in the early 1990s and linked directly to those historical fueling operations. Cleanup work underway has included removal of a UST, installation of groundwater extraction wells, pumping tests, and a vacuum extraction pilot test; planned next steps include soil excavation, ex-situ aeration and biodegradation treatment, in-situ bioremediation through oxygen and nutrient injection, and long-term groundwater monitoring. 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 property originates from underground storage tank operations that ran for nearly two decades entirely before 1986 — the period when occurrence-based CGL policies were standard and carried no effective pollution exclusion in Washington. Shell Oil's operation of four gasoline USTs at this site from 1956 through 1974 falls squarely within the window those policies covered. The remediation costs already incurred — tank removal, extraction well installation, pilot testing — and the substantial planned work still ahead represent expenditures that historical carriers whose CGL policies were in force during Shell's operational tenure may be obligated both to recover and to fund going forward.
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.


