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 gasoline fueling station and food mart in Mount Vernon, with underground storage tanks and fuel dispensers serving retail customers. Three older USTs were removed and replaced in 1991, and contamination from a UST turbine leak was discovered in 1992. Cleanup under the Voluntary Cleanup Program has included removal of the replacement USTs, associated piping, and 1,491.71 tons of impacted soil, along with groundwater treatment through enhanced liquid recovery of over 26,500 gallons, vacuum extraction, sulfate and Regenox/ORC injection, and operation of a soil vapor extraction and air sparging system. Quarterly groundwater monitoring continues. 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 three older USTs removed before the 1991 replacements confirm that petroleum operations at this property were underway well before 1986 — and the contamination discovered from the turbine leak in 1992 traces back to releases during that earlier operational period. The multi-year remediation costs already incurred here — nearly 1,500 tons of soil removal, tens of thousands of gallons of groundwater recovery, in-situ chemical treatment, and ongoing quarterly monitoring — represent exactly the kind of long-tail environmental expenditures that historical occurrence-based CGL carriers may be obligated to fund.
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
Ready to learn more?
Contact UsThis analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.


