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 recover the cleanup costs already paid.
The Oso Store operated as a gasoline station and convenience store at 30230 Oso Loop Road in rural Snohomish County until January 2006. Benzene was detected in the property's drinking water supply as early as 1996, and three underground storage tanks were excavated and removed in 1998, along with 800 cubic yards of contaminated soil. Remaining contaminated soil beneath the store building was treated with a biocatalyst and secured under a Restrictive Covenant filed in 2005, followed by groundwater monitoring and natural attenuation from 2006 through 2009. The site received a No Further Action determination under the Voluntary Cleanup Program. 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.
Gasoline-range petroleum contamination at this property originated from underground storage tanks that were in service well before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The documented remediation costs — tank removal, excavation of 800 cubic yards of soil, biocatalyst treatment, a Restrictive Covenant, and three years of groundwater monitoring — were incurred to address releases tied directly to those pre-1986 fueling operations. Historical carriers who wrote CGL policies covering this property during the tanks' operational life may still be obligated to recover those cleanup expenditures.
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.
Recovering Costs from an Older Cleanup
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.
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.
