This gasoline service station property dates to 1957, when the building was constructed per King County Assessor records. Four single-wall steel underground storage tanks — for gasoline and waste oil — were installed between 1964 and 1970, none equipped with corrosion protection. Petroleum products and benzene were identified in groundwater, prompting environmental monitoring as early as 1991 and a site relinquishment assessment in 1990. The original tanks were replaced with double-wall fiberglass tanks in 1993, and following remediation under the Voluntary Cleanup Program, Ecology issued a No Further Action determination in 2009. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.
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 at this property were installed and operated continuously from 1964 through their 1993 replacement — spanning more than two decades of the pre-1986 occurrence-based CGL era, when policies carried no effective pollution exclusion. The petroleum and benzene contamination remediated in groundwater here is consistent with long-term releases from unprotected single-wall steel tanks of exactly that vintage. Historical carriers who wrote CGL policies covering this station during its 1964–1986 operating window may be obligated to respond to the remediation costs incurred to achieve the site's No Further Action status.
Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.
If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.
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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.