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 Exxon Station 76969, a gasoline service station with underground storage tanks and fuel pump islands, in Burien, King County. The presence of leaded gasoline constituents in groundwater samples from 1991 and 1992 confirms that petroleum releases originated from operations predating 1986. Cleanup under the Standard Cleanup program has included soil vapor extraction, air sparging, pump-and-treat groundwater remediation, and underground storage tank removal, with 2,847 pounds of hydrocarbons recovered to date. Post-remediation groundwater monitoring remains ongoing. 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 gasoline and diesel contamination at this former Exxon station — TPH, BTEX, and lead — traces directly to fuel storage and dispensing operations conducted before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The site's documented remediation expenditures — vapor extraction, air sparging, pump-and-treat systems, tank removals, and years of groundwater monitoring — represent costs the historical carriers who insured those pre-1986 operations may be obligated both to recover and to fund going forward.
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
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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.


