Heating Oil Tank cleanup site — Restorical Research
Allen Residence
Edmonds, Snohomish 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 residential property in Edmonds is the site of a former heating oil underground storage tank that released petroleum hydrocarbons into surrounding soil and groundwater. Remediation was initiated under Washington's Voluntary Cleanup Program and included implied soil excavation, construction of groundwater monitoring wells, four consecutive quarters of groundwater sampling, verification soil sampling, and replacement of a stormwater pipeline within the contaminated footprint. The VCP agreement was subsequently terminated after Ecology determined that the proposed remedial action was insufficient and active cleanup had not advanced, leaving the site's cleanup obligations unresolved. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
AddressEdmonds, Snohomish County
Historical UseHeating Oil Tank
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsTotal petroleum hydrocarbons (TPH as Diesel and TPH as Lube-oil) detected in soil and groundwater
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #4436

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.

Heating oil USTs of the kind documented at this property are characteristic of older residential infrastructure installed and operated well before modern tank regulations and before 1986, when occurrence-based Commercial General Liability policies were the standard and carried no effective pollution exclusion. The petroleum hydrocarbon contamination in soil and groundwater here represents the kind of slow, chronic release those policies were designed to cover. With the VCP terminated and Ecology having found the initial remedial plan inadequate, substantial future cleanup costs remain — costs that historical CGL carriers whose policies were in force during the tank's operating years 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 & 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.