Industrial & Manufacturing cleanup site — Restorical Research
Century Chemical Plant
Umatilla County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as an industrial and manufacturing facility predating 1986. Historical insurance policies issued during those prior operations and through 1986 could help fund the cleanup that lies ahead.

This chemical plant in Umatilla County was documented by EPA in 1987 with existing groundwater contamination — simazine detected in groundwater and chemical applicator tanks observed dumped on the ground, with an underground storage tank also present on the property. Oregon DEQ noted in 1990 that further information was required, but the site has remained in Unassigned status with no investigation or remediation completed in the decades since. No No Further Action determination has been issued, and DEQ's own assessment acknowledged that groundwater and soil contamination could be more widespread than the limited sampling revealed. 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.

Former Use
Former Industrial & Manufacturing
LocationUmatilla County
Historical UseIndustrial & Manufacturing
Est. Operating SincePredating 1986
Project StatusUnassigned
Contamination & Investigation
Site Assessment Summary
ContaminantsSimazine detected in groundwater, with potential broader soil and groundwater contamination from chemical plant operations
Regulatory ProgramOregon DEQ — Cleanup Program / VCP
DEQ ECSI #0021

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 chemical plant operations that caused contamination at this Umatilla County property predate 1986, with EPA documenting simazine in groundwater and chemical applicator tanks dumped on the ground when it first assessed the site in 1987. The site has remained in unassigned status with Oregon DEQ for decades with no investigation or remediation ever completed, meaning the investigation, delineation, and remediation costs this property still faces are entirely ahead — costs that pre-1986 CGL policies issued to operators of this chemical plant 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

Task 1 — Research and Analysis
Restorical searches for viable historical insurance policies, researches the site history, analyzes the contamination impacts, and underwrites potential coverage — including a proprietary trigger analysis. At the end of Task 1, we provide a clear yes or no on whether viable insurance coverage exists to fund the cleanup, along with a strategy and recommendation specific to your situation, even if you are not the policyholder.
Task 2 — Coverage and Funding
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim, negotiate and secure insurance coverage. Restorical will manage the ongoing claim process, including accounting to ensure the insurance companies are funding your remediation in a timely manner.

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This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.