This property has a documented history as a dry cleaning facility going back to 1975. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup.
Plaza One Hour Cleaners has operated as a dry cleaning business at this Seattle location since 1975, using tetrachloroethylene (PCE) continuously throughout that period. PCE contamination was first identified in groundwater in 1995 and 1996, attributed to historical dry cleaning operations at the site. Planned cleanup under an Independent Remedial Cleanup Activity (IRCA) calls for Enhanced Reductive Dechlorination — injection of 15,000 gallons of solution containing 6,184 pounds of emulsified vegetable oil through four injection wells — followed by quarterly groundwater monitoring for one to two years post-injection. 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 use at this property began in 1975 and continued uninterrupted through the pre-1986 era when occurrence-based Commercial General Liability policies were the industry standard and contained no effective pollution exclusion. The contamination now documented in groundwater here traces directly to those decades of dry cleaning operations, not to any discrete accident. Historical carriers who issued CGL policies to Plaza One Hour Cleaners during the 1975–1986 window may still be obligated to fund the investigation and remediation costs — ERD treatment, injection infrastructure, and multi-year groundwater monitoring — now required to address that release.
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.


