Gas Station cleanup site — Restorical Research
Exxon 79049
6056 Martin Luther King Jr Way S, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1968. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

This property has operated as a gasoline service station since at least 1968, based on the estimated installation date of underground storage tanks removed in 1993, and has been operated continuously under successive brands including Exxon, BP, Conoco, and 76. Cleanup under the Voluntary Cleanup Program ran from 1999 through 2008 and included removal of five USTs and approximately 2,700 cubic yards of petroleum-impacted soil in 1993, excavation of an additional 2,085 cubic yards of soil and an abandoned UST containing leaded gasoline in 2004, Enhanced Fluid Recovery operations in 1996, and groundwater monitoring from 1992 to 2011. The property currently operates as a 76/Circle K gasoline station with a convenience store, and cleanup work remains ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address6056 Martin Luther King Jr Way S, Seattle, King County
Historical UseGas Station
Est. Operating Since1968
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from leaking USTs detected in soil and groundwater, including leaded gasoline in an abandoned tank
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6432

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 contamination at this site traces to underground storage tanks installed and operated nearly two decades before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The discovery of leaded gasoline in an abandoned UST confirms pre-1986 fueling operations as the contamination source. Documented remediation expenditures spanning more than a decade — large-scale soil excavation, tank removals, fluid recovery, and long-term groundwater monitoring — represent costs that historical carriers who insured this station during the pre-1986 window may be obligated both to reimburse and to continue funding.

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.