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 operated as a full-service Unocal gasoline station with underground storage tanks holding gasoline, diesel, waste oil, and heating oil. Subsurface petroleum contamination was first confirmed in 1990, and remediation has been active since. All aboveground and underground service station facilities were removed in 1992 and 1994, with additional soil excavations conducted in 1994 and 2002. Extensive groundwater monitoring through monitoring wells and geoprobe sampling has been ongoing since 1994 under the Voluntary Cleanup Program, with proposals for continued monitoring and new well installations. 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 and lead found in soil and groundwater at this site originated from decades of gasoline and diesel storage and dispensing — operations that predate 1986, as evidenced by the presence of lead from historical leaded-gasoline use. Occurrence-based CGL policies issued to the operators during that pre-1986 window carried no effective pollution exclusion in Washington and remain enforceable today. More than three decades of documented remediation costs — facility removal, soil excavation, and ongoing groundwater monitoring — represent expenditures 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
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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.


