This property has a documented history as a dry cleaning facility going back to 1963. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
Dry cleaning operations at this Seattle property date to 1963, with perchloroethene (PCE) and mineral spirits used as cleaning solvents throughout the site's history. A 2,300-gallon underground storage tank was removed in 1998, and a soil vapor extraction and air/ozone sparging system operated from 2001 to 2004, recovering 1,048 pounds of contaminants. The proposed cleanup action — in-situ thermal treatment followed by long-term monitored natural attenuation and multi-year groundwater monitoring — carries an estimated total cost of $2.2 million. 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.
PCE and mineral-spirits contamination at this property originated from dry cleaning operations that began in 1963, more than two decades before occurrence-based CGL policies routinely incorporated effective pollution exclusions. The timeline of releases — spanning decades of active solvent use and confirmed in both soil and groundwater — is precisely the slow-onset contamination pattern those pre-1986 policies were written to cover. Historical carriers whose policies were in force during that operational window may bear obligations both to recover costs already spent on extraction and tank removal and to fund the $2.2 million in remediation work ahead.
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.


