Heating Oil Tank cleanup site — Restorical Research
Olympian Apartments
Seattle, King 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.

The Olympian Apartments property in Seattle housed multiple oil storage tanks — an aboveground storage tank and several underground storage tanks — that supplied heating oil to the apartment complex and its associated garage. A site hazard assessment confirmed petroleum contamination, with petroleum stains observed in open soils near the aboveground tank and a black, tarry substance found around multiple underground storage tank standpipes across the property. The site was listed on Washington's Confirmed and Suspected Contaminated Sites List in February 1992, and the only documented remediation to date has been removal of the aboveground storage tank; no further active cleanup has commenced. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
AddressSeattle, King County
Historical UseHeating Oil Tank
Est. Operating SincePre-1986
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (TPH-Diesel, TPH-Other) detected in soil
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #3796

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 petroleum releases at this property originated from heating oil storage infrastructure whose contamination was already present when the site was investigated in 1992, placing the responsible operations squarely in the era before 1986 when occurrence-based CGL policies carried no effective pollution exclusion. The contamination pattern — petroleum staining across open soils and tarry residue around multiple underground tank standpipes — is characteristic of the gradual, ongoing releases those pre-1986 policies were designed to address. With remediation yet to begin and the full scope of cleanup costs still ahead, historical carriers who issued CGL policies to the property operators during that window may be obligated to fund what 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.