Heating Oil Tank cleanup site — Restorical Research
Oak Harbor Sanitation Treatment Plant LUST
1501 SE City Beach St Plant, Oak Harbor, Island County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a property with a heating oil tank predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property housed a 300-gallon underground storage tank containing heating oil that was removed in August 1998 after diesel-range petroleum hydrocarbons were found in soil and groundwater. Remediation under the Voluntary Cleanup Program has included excavation of the tank and contaminated soil, on-site biostimulant treatment, installation of four groundwater monitoring wells with multiple sampling events, and a 2007 sediment sampling investigation — a cleanup effort spanning more than a decade. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
Address1501 SE City Beach St Plant, Oak Harbor, Island County
Historical UseHeating Oil Tank
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsDiesel-range petroleum hydrocarbons from a leaking heating oil UST detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6410

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 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.

The heating oil release at this property originated from an underground storage tank that was in service well before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The contamination — diesel-range petroleum hydrocarbons migrating through soil and groundwater — is the type of gradual, ongoing release those policies were written to cover. With cleanup still underway, historical carriers who issued CGL policies during the tank's operating years may be obligated both to reimburse remediation costs already incurred and to fund the monitoring and corrective work that remains.

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 & Forensic Accounting

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 a successful cost recovery is possible, 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.