The Kent Sewage Lagoons were constructed by the City of Kent near the Green River beginning in 1964 — the North Lagoon that year, with additional lagoons added in 1968 — and operated as a municipal wastewater treatment facility until 1973. The site is enrolled in the Voluntary Cleanup Program; planned remediation includes excavation of lagoon sludges, sediment, the lagoon liner, and underlying soils as part of a proposed stormwater detention and wildlife habitat enhancement project. Groundwater monitoring has also been conducted at the property. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.
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.
Municipal wastewater operations at this site ran from 1964 through 1973, placing the facility's entire active period more than a decade before 1986, when occurrence-based Commercial General Liability policies were the industry standard and carried no effective pollution exclusion. The contamination now requiring excavation and remediation — lagoon sludges and impacted underlying soils — is a direct product of those historical operations, and the City of Kent, as the operator of record throughout that window, may have held CGL coverage subject to those older policy terms. The documented cleanup expenditures — lagoon sludge and liner removal, soil excavation, and long-term groundwater monitoring — represent costs that historical carriers may be obligated both to recover and to fund as remediation proceeds.
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.
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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.