This property has a documented history as a landfill going back to 1970. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.
The Turnbull Landfill operated as a solid waste disposal facility from approximately 1970 to 1974, receiving municipal solid waste, construction debris, and demolition debris during that period. A 1983 investigation confirmed the presence of uncontrolled refuse and recommended evaluating groundwater impacts. Cleanup under the Voluntary Cleanup Program included removal of surficial landfill refuse, capping with three to twelve feet of clean soil, grading, and installation of roads and utilities, along with years of quarterly groundwater monitoring and a restrictive covenant prohibiting groundwater use. A methane mitigation system with sub-slab passive venting was installed as part of more recent commercial redevelopment, and institutional controls and periodic reviews remain in place. 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.
All contamination at this property traces to landfill operations that ceased more than a decade before the 1986 threshold, with documented investigation findings as early as 1983 confirming that subsurface conditions were already impacted. Occurrence-based CGL policies issued to the operators and landowners during the 1970–1974 operating window — and potentially through the late 1970s and early 1980s as contamination continued to migrate — carried no effective pollution exclusion and remain enforceable. The full arc of documented remediation costs here — refuse removal, soil capping, long-term groundwater monitoring, and methane mitigation infrastructure — represents recoverable expenditures tied directly to those pre-1986 disposal operations.
Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.
Recovering Costs from an Older Cleanup
If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.
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.


