This property has a documented history as a industrial and manufacturing facility predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
The former Blackstock Lumber Property at 601 Elliott Ave W in Seattle operated an industrial facility serviced by five underground storage tanks holding gasoline, diesel, and Bunker C heating oil. Petroleum contamination was discovered in soils near those tanks, and by February 1993 investigators noted the contamination had likely been in the subsurface for more than ten years — placing the release origin before 1983. Cleanup work has included removal of all five USTs in July 1991, excavation and off-site disposal of petroleum-impacted soil, and backfilling of the excavated area; approximately 10 cubic yards of impacted soil remain in place due to site constraints and excessive removal costs. Quarterly groundwater monitoring is ongoing and has been recommended to continue for at least one additional year. 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 UST-sourced petroleum release at this property was already more than a decade old as of 1993, confirming that contamination originated well before 1986 — when occurrence-based Commercial General Liability policies had no effective pollution exclusion in Washington. Historical carriers whose CGL policies covered this industrial property during the operational period when the release first occurred may still be obligated to respond to cleanup claims. The documented remediation costs — five UST removals, soil excavation and off-site disposal, groundwater monitoring, and impacted soil yet to be fully addressed — represent both past expenditures and continuing obligations that pre-1986 policies may be called upon 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
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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.


