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 — and recover costs already spent.
This property was occupied by a service station and automotive repair facility before Unocal purchased it in 1964; Unocal reconstructed the station in 1967, installing two 10,000-gallon steel underground gasoline storage tanks, and operated Service Station 5479 through 1993. Remediation has included multiple rounds of UST removal in 1987 and 1993–1994, excavation of approximately 4,500 cubic yards of contaminated soil, product pumping, hot-water tank rinsing, and sludge removal. Groundwater pump-and-treat to address PCE contamination has been recommended and is anticipated to be a lengthy and costly undertaking. Cleanup is ongoing. 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 underground storage tanks at this site were installed and in active use for decades before 1986 — including pre-Unocal tanks removed as recently as 1993, and Unocal's own 10,000-gallon steel tanks installed in 1967. Occurrence-based CGL policies issued to operators during that pre-1986 window carried no effective pollution exclusion under Washington law. The site's documented remediation expenditures — multiple UST removals, thousands of cubic yards of soil excavation, sludge disposal, and an anticipated long-term groundwater pump-and-treat program — represent costs that historical carriers 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
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.


