Public Works cleanup site — Restorical Research
HILLSBORO UNION HIGH SCHOOL DISTRICT
Washington County
Restorical Research
Preliminary Site-Specific Analysis

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.

This public school district property experienced a leaking underground storage tank release discovered in July 1995 during tank decommissioning, with the UST likely installed in the 1970s to fuel the district's bus fleet. Petroleum contamination has been confirmed in both soil and groundwater, with the aquifer less than twenty feet below the surface and vapor intrusion flagged as a possible concern. Oregon DEQ issued active technical direction in February 2024 and held a consultant meeting in March 2024 to advance remediation planning, including proposed petrofix treatment at two impacted locations, quarterly groundwater monitoring, development of a Contaminated Media Management Plan, and Environmental Easements for affected residential parcels. No No Further Action determination has been issued, and the site remains under active DEQ oversight as an assigned cleanup project. 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 Public Works
LocationWashington County
Historical UsePublic Works
Est. Operating SincePredating 1986
Project StatusAssigned
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from leaking underground storage tank in soil and groundwater
Regulatory ProgramOregon DEQ — Cleanup Program / VCP
DEQ ECSI #34-95-0184

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 underground storage tank at this school district property was installed in the 1970s to fuel the district's bus fleet, operating for more than a decade before 1986 and continuing through its 1995 decommissioning, when the petroleum release contaminating soil and groundwater was discovered. The multi-track remediation program now advancing under Oregon DEQ direction — including petrofix treatment at impacted locations, quarterly groundwater monitoring, development of a Contaminated Media Management Plan, and Environmental Easements for affected residential parcels — represents substantial ongoing and future costs that historical pre-1986 carriers 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.