This property has a documented history as a industrial and manufacturing facility going back to 1900. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup.
The Palmer Coking Coal site in Black Diamond has operated as a coal washing facility since 1900; washing operations ceased in 1992, and the property now operates as a supplier of gravel, rock, and coal cinder material. Two 10,000-gallon underground storage tanks — installed in 1975 — have been removed, with their contents cleaned and disposed of off-site, and an EPA site inspection was conducted in 1985–1986 due to suspected hazardous substances on the property. Remediation is ongoing, including excavation and soil sampling, with contaminated soils slated for on-site landfarming. 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 property traces to industrial activities predating 1986 by decades: oil sludge was disposed of on-site in the late 1960s, and the underground storage tanks that released petroleum into the surrounding soil were installed in 1975. The EPA's 1985–1986 inspection confirms that regulators had already identified suspected hazardous substances before the pollution exclusion became standard in Commercial General Liability policies. Historical carriers who issued occurrence-based CGL policies to the operators during that pre-1986 window may be obligated to fund the remediation costs — UST removal, soil excavation, landfarming, and long-term site management — that the current owner now faces.
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.


