This property has a documented history as a industrial and manufacturing facility going back to 1943. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
This property was developed in the early 1940s and produced mineral fiber insulation products from 1946 through 2002, using ASARCO copper-smelter slag as a raw material from 1959 to 1973. That slag and the facility's own waste products — baghouse dust, shot, cupola bottom material, and off-spec product — became sources of metals contamination across the site. Cleanup under a Standard Cleanup program has included excavation of over 228,000 tons of contaminated soil and source material from 1995 to 2005, replacement of stormwater systems, backfilling with 161,000 tons of clean material, grading, capping, and multi-year groundwater monitoring to verify the effectiveness of source removal. Remediation work is ongoing. 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.
Metals contamination at this site traces to industrial manufacturing operations that began in 1946 — four decades before occurrence-based Commercial General Liability policies gave way to claims-made forms with pollution exclusions. The use of ASARCO slag as feedstock and the generation of metal-laden waste products over that span created the contamination now being remediated at enormous cost: hundreds of thousands of tons of excavation, engineered caps, new stormwater infrastructure, and long-term monitoring. Historical CGL carriers who covered the plant's operations during the pre-1986 window may be obligated both to recover past remediation expenditures and to fund the cleanup work that remains.
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.


