This property has a documented history as a property with a heating oil tank predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.
This single-family residence in Tukwila housed a 300-gallon heating oil underground storage tank that was removed in 2004, leaving reportedly disturbed soil in the front yard. A soil sample collected at the time of removal showed diesel contamination at 3,300 milligrams per kilogram, with less than 10 cubic yards of impacted soil estimated for site-scoring purposes. The former owner represented that the site had been remediated, though supporting documentation is lacking, and the property remains in Awaiting Cleanup status under Standard Cleanup. 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.
Tank-lifecycle analysis places the installation of the heating oil UST at this residence around 1979 — squarely within the era when occurrence-based Commercial General Liability policies had no effective pollution exclusion and were routinely issued to residential property owners. Diesel contamination of the type found here — a slow release from a buried heating oil tank into surrounding soil — is precisely the gradual pollution event those pre-1986 policies were written to address. If the former owner's remediation claim proves undocumented and the property requires further investigation or cleanup, historical carriers who issued policies during the tank's operational years may carry an obligation to fund that work.
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.
