This property has a documented history as a public works and maintenance facility predating 1986. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.
This property is the King County Metro Central Base Facility, a municipal bus maintenance complex whose twelve service bays are equipped with hydraulic hoist systems used to raise buses during routine maintenance. During a renovation project from October 2011 to March 2012, contaminated soil was excavated from multiple bays, thermally treated, and disposed of off-site; petroleum-affected groundwater encountered during deeper excavation was pumped into holding tanks and also transported off-site for treatment. The facility remains in active use, with ongoing operations and maintenance monitoring in place under the Standard Cleanup program. 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 contamination at this facility — hydraulic oil with suspected polychlorinated biphenyls — originated from hoist systems whose age prompted environmental consultants to test specifically for PCBs, a class of chemicals banned from U.S. production in 1979. That testing protocol strongly implies the hydraulic equipment and the contamination it caused predate 1986, the period when occurrence-based CGL policies carried no effective pollution exclusion in Washington. The documented remediation expenditures — multi-bay soil excavation, thermal treatment, groundwater recovery, and continuing site monitoring — represent cleanup costs that historical carriers on risk during the facility's pre-1986 operations may be obligated to cover.
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
Ready to learn more?
Contact UsThis analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.


