Gas Station cleanup site — Restorical Research
Unocal 5476
13001 Lake City Way NE, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1931. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property hosted two successive gasoline service stations: a Moblas station that operated from approximately 1931 through 1984, and Unocal Service Station 5476, which operated from roughly 1967 through the early 1990s. Both stations sold petroleum products and performed automotive services. Underground storage tanks were removed in 1992, and a release was reported to Ecology in December of that year, with subsequent investigation confirming petroleum hydrocarbons, BTEX compounds, heavy oil, and waste oil in both soil and groundwater. The site has since received a No Further Action determination. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address13001 Lake City Way NE, Seattle, King County
Historical UseGas Station
Est. Operating Since1931
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline, BTEX), heavy oil, and waste oil detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #8922

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.

Petroleum service operations at this property began in approximately 1931 — more than five decades before 1986, when occurrence-based Commercial General Liability policies ceased reliably covering pollution claims in Washington. The gasoline, BTEX, heavy oil, and waste oil contamination found in soil and groundwater here is directly traceable to decades of fueling and automotive-service operations conducted under those earlier policies. Historical carriers who provided CGL coverage during that extended pre-1986 operational window may still be obligated to reimburse the remediation costs incurred to achieve the site's No Further Action status.

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.