This property has a documented history as a landfill predating 1986. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.
This Tukwila property served as a disposal area for industrial waste fill — specifically cement kiln dust, a byproduct of industrial manufacturing — deposited to a depth of eight to ten and a half feet and confirmed present by at least 1979. Initial site preparation in 1979 involved excavation and removal of deleterious waste materials, followed by remedial actions from 1991 through 1998 targeting the cement kiln dust contamination. A "No Further Action" determination was issued contingent on multi-year groundwater and surface water monitoring in 2000, 2002, and 2004, a restrictive covenant on the property, and a ditch dredging and reseeding project completed in 2000. 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 industrial waste fill at this site — cement kiln dust carrying arsenic and lead — was in place before 1979, well ahead of the 1986 threshold at which occurrence-based Commercial General Liability policies ceased to reliably cover pollution claims. Carriers who issued CGL policies to operators depositing or managing that waste during the pre-1986 window did so without an effective pollution exclusion and remain potentially liable. The documented remediation expenditures here — spanning excavation, multi-phase remedial action, years of groundwater and surface water monitoring, ditch dredging, and a recorded restrictive covenant — represent a cost trail that historical insurers may be obligated to fund.
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
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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.


