Gas Station cleanup site — Restorical Research
Circle K Ambaum Blvd SW
17700 Ambaum Blvd SW, Burien, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1985. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property operated as a ConocoPhillips gasoline service station with underground storage tanks including an unleaded gasoline UST installed in October 1985 and a diesel UST installed in June 1987. The former USTs were decommissioned in 1998, and the site was enrolled in Washington's Voluntary Cleanup Program. Groundwater monitoring conducted between 2009 and 2010 documented benzene contamination; remediation brought groundwater concentrations below cleanup levels, and the site has received a No Further Action determination from Ecology. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address17700 Ambaum Blvd SW, Burien, King County
Historical UseGas Station
Est. Operating Since1985
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsBenzene (petroleum hydrocarbon) detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #10506

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 unleaded gasoline UST at this property was installed in October 1985 — months before the January 1986 date after which occurrence-based Commercial General Liability policies began excluding pollution claims. Benzene contamination in groundwater required years of monitoring and remediation through the Voluntary Cleanup Program, generating costs directly tied to the operation of that pre-1986 tank. Historical CGL carriers whose policies were in effect when the UST was installed and operating may still be obligated to cover those documented remediation expenditures.

Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.

Recovering Costs from an Older Cleanup

If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.

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 — Cost Recovery
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim and negotiate recovery of costs already incurred. Restorical's forensic accounting team re-establishes and documents past cleanup expenditures, managing the claim process to ensure the insurance companies fulfill their obligation 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.