This property has a documented history as an industrial and manufacturing facility going back to 1963. Historical insurance policies issued during operations at this property and through 1986 could help fund the ongoing and future cleanup under Oregon DEQ oversight.
This industrial property has operated as a diesel engine component rebuild facility since 1963, first under Northwest Motor Welding and then Diesel Cast West from 1996 onward, with decades of operations involving corrosive detergents, solvents, paints, and discharge of oil- and grease-laden wash water to subsurface piping and clarifiers. Groundwater monitoring has confirmed arsenic concentrations up to 681 µg/L and lead up to 68.7 µg/L — both far exceeding risk-based concentrations — along with total petroleum hydrocarbons, with the contamination plume migrating toward the Columbia Slough approximately 275 feet away. Oregon DEQ has twice rejected No Further Action requests, citing insufficient sampling and the need for a Source Control Evaluation to assess potential impacts to Columbia Slough sediments. A Source Control Evaluation Work Plan was submitted in December 2025, and significant investigation and remediation work remains before the site can achieve closure. That history could support an insurance coverage claim against the carriers who issued policies more than 40 years ago — coverage that could help fund the cleanup ahead.
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 Oregon — and those policies may provide coverage that remains enforceable today. 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 originated from diesel engine rebuild operations that began in 1963, discharging solvents, corrosive detergents, and petroleum-laden wash water into the subsurface for more than two decades before 1986. With Oregon DEQ directing a Source Control Evaluation to assess potential impacts to Columbia Slough sediments, ongoing groundwater monitoring for arsenic, lead, and petroleum contamination, and significant remediation work ahead, the investigation and cleanup costs this property still faces represent a substantial obligation that historical pre-1986 carriers for the operators of this facility may be obligated 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
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.