This property has a documented history as a gasoline service station going back to 1961. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.
This property operated as Unocal Service Station 4870 in Redmond, Washington, with underground storage tanks for gasoline, diesel, and waste oil installed as early as 1961 and additional tanks added in 1975 and 1983. Cleanup activities from 1990 through 1997 included excavation and off-site disposal of tanks and contaminated soil, soil screening, and air sparge/vapor extraction pilot testing, followed by multi-year groundwater monitoring. Petroleum hydrocarbon contamination was identified in soil near the former lube bay sump, dispensing islands, and tank basin, and ongoing monitoring at an adjacent property — likely impacted by the Unocal site — continued through 2021–2022 with proposed remediation options carrying individual cost estimates ranging from $50,000 to $200,000. 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 and fueling infrastructure installed and operated beginning in 1961 — more than two decades before occurrence-based Commercial General Liability policies stopped reliably covering pollution claims in 1986. The documented remediation expenditures spanning three decades — tank removal, soil excavation, vapor extraction, and long-term groundwater monitoring across both the station property and the adjacent parcel it impacted — represent cleanup costs that historical carriers who issued CGL policies during that pre-1986 operational window may still be obligated to recover.
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.
