This property has a documented history as a public works and maintenance facility going back to 1945. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
The Port of Pasco's Big Industrial Park Lagoons consist of two former wastewater treatment lagoons at the Big Pasco Industrial Center, a facility originally developed during World War II and acquired by the Port in 1958. In January 2021, the biosolid deposits in both lagoons were sampled to characterize the waste, revealing a broad range of contaminants in approximately 94,530 cubic feet of material. Cleanup under the Voluntary Cleanup Program has included engineering controls — backfilling and capping both lagoons — along with an environmental covenant recorded in 2022 and quarterly groundwater monitoring that has been ongoing since November 2023. 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 contaminants identified in the lagoon biosolids — heavy metals, dioxins, furans, PCBs, PBDEs, PFAS, and pesticides — are consistent with decades of mixed industrial wastewater processing that began before the end of World War II and continued through the pre-1986 period when occurrence-based CGL policies carried no effective pollution exclusion. Operators of the industrial park during that multi-decade window would have held policies potentially obligated to respond to this type of slow-accumulating hazardous waste. The documented remediation expenditures here — lagoon capping, an institutional environmental covenant, and a multi-year groundwater monitoring program — represent both past costs and continuing obligations that historical carriers may be required to fund.
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.


