Heating Oil Tank cleanup site — Restorical Research
Immaculate Conception School
Mount Vernon, Skagit County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a property with a heating oil tank going back to 1965. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

Three underground fuel storage tanks — containing leaded gasoline, furnace oil, and diesel — were removed from this school property in August 1990, with the 750-gallon furnace oil tank located adjacent to the boiler room of the main school building. Contamination was discovered during removal, prompting excavation, free-product recovery from groundwater using adsorbent cloths, and installation of monitoring wells. The cleanup process, conducted under the Voluntary Cleanup Program, spanned at least eight years of regulatory interaction and remediation work. Cleanup activities at the site remain ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
AddressMount Vernon, Skagit County
Historical UseHeating Oil Tank
Est. Operating Since1965
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (leaded gasoline, furnace oil, diesel) detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7420

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 underground storage tanks at this property held leaded gasoline — a fuel largely phased out before 1986 — placing the tanks' operational period squarely within the era of occurrence-based Commercial General Liability policies that carried no effective pollution exclusion in Washington. The documented remediation costs here — tank removal, contaminated soil excavation, groundwater product recovery, and long-term monitoring — represent expenditures tied directly to releases from those pre-1986 operations. Historical carriers who issued CGL policies during the tanks' active service may be obligated both to reimburse past cleanup costs and to fund the remediation work that lies ahead.

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.