Heating Oil Tank cleanup site — Restorical Research
Blanchard Heating Oil Tank
Kirkland, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a property with a heating oil tank going back to 1985. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This property was the site of an above-ground heating-oil tank system whose operations caused petroleum contamination in soil and groundwater. Cleanup work to date has included removal of the heating oil tank, excavation of impacted soil, and installation of a replacement drainage system to intercept contaminated seepage. The project remains open under Standard Cleanup; a No Further Action determination will not be issued until future sampling confirms that groundwater and soil no longer exceed cleanup levels. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
AddressKirkland, King County
Historical UseHeating Oil Tank
Est. Operating Since1985
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from a former heating oil tank detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #878

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 tank system at this property was in operation approximately twenty years before the contamination was discovered in 2005, placing its use squarely in the pre-1986 era when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The petroleum release into soil and groundwater is the kind of gradual, operations-linked contamination those policies were written to cover. The cleanup costs the property owner still faces — ongoing monitoring, future sampling, and any additional remediation needed to reach closure — could plausibly be funded by historical carriers whose policies were in effect when the tank system was operating.

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.