This property has a documented history as a gasoline service station going back to 1976. Historical insurance policies issued during operations at this property and through 1986 could recover the cleanup costs already paid.
This property has operated as a retail gasoline station at 6601 166th Avenue East in Sumner, with single-walled steel underground storage tanks that were likely installed around 1976 based on their 25-year lifecycle at the time of removal. In 2001, three USTs were decommissioned and removed along with 1,386 tons and 1,066 cubic yards of contaminated soil; groundwater encountered during excavation was pumped and discharged to the sanitary sewer. Groundwater monitoring continued from 2001 through 2021, with soil gas sampling conducted in 2021, and the site has since received a No Further Action determination. The property remains an active retail gasoline station. 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.
Petroleum contamination at this site originated from underground storage tanks installed and operated well before 1986 — laboratory analysis for total lead confirms the facility dispensed leaded gasoline, a product phased out by the mid-1980s. Occurrence-based CGL policies in effect during that pre-1986 operational window carried no effective pollution exclusion under Washington law. Twenty years of documented remediation expenditures — tank removal, large-scale soil excavation, groundwater recovery, and long-term monitoring — represent cleanup costs that historical carriers who wrote those policies may still be obligated to cover.
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.
