This property has a documented history as a public works and maintenance facility predating 1986. Historical insurance policies issued during operations at this property and through 1986 could help fund the ongoing and future cleanup under Oregon DEQ oversight.
Portland's Columbia South Shore Wellfield serves as a secondary drinking water source for approximately 800,000 residents, with capacity of 80–95 million gallons per day. Groundwater sampling conducted in April 2025 under Oregon DEQ task order confirmed chlorinated solvents and PFAS in monitoring wells, with industrial sources in the surrounding area — including a former gas station that operated from 1957 to 2000 with documented underground storage tank leaks — contributing dissolved-phase petroleum hydrocarbons and volatile organic compounds to the aquifer. The site is currently in an Expanded Preliminary Assessment phase approved by EPA due to the wellfield's critical importance as a public water supply, with investigation and characterization still underway and cleanup yet to begin. 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 affecting this wellfield traces to industrial activity in the surrounding area — including a former gas station that operated from 1957 to 2000 with documented underground storage tank leaks — that released chlorinated solvents and other contaminants into the groundwater well before 1986. With the site still in the expanded preliminary assessment phase and the full scope of remediation yet to be determined, the investigation, characterization, and eventual cleanup costs ahead represent a substantial future obligation that pre-1986 carriers whose policies were in effect during the years of surrounding industrial operations may be obligated to fund going forward.
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.