Gas Station cleanup site — Restorical Research
Time Oil Bills Tires
4910 Leary Ave NW, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1922. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property has operated as a commercial fueling and automotive service site since 1922, when a Mobil-brand retail gasoline station and automotive repair facility was constructed with three fuel-dispensing pump islands and underground storage tanks — upgraded with new UST installations in 1942. Cleanup under the Voluntary Cleanup Program has been ongoing since at least 2000, including remedial excavations in 2001, 2004, and 2012 that removed over 1,400 tons of contaminated soil along with several USTs and hydraulic lifts, in-situ chemical oxidation of groundwater, and quarterly groundwater monitoring with an evolving well network. Further remedial action is still deemed necessary for portions of the site. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address4910 Leary Ave NW, Seattle, King County
Historical UseGas Station
Est. Operating Since1922
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range petroleum hydrocarbons (GRPH) and BTEX compounds detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6770

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 property — gasoline-range hydrocarbons and BTEX compounds — traces directly to fuel-dispensing operations that began more than six decades before 1986, when occurrence-based CGL policies still carried no effective pollution exclusion in Washington. Over two decades of documented remediation expenditures — large-scale soil excavation, UST removal, groundwater treatment, and ongoing monitoring — have already been incurred, with additional remedial work still required. Historical carriers who issued CGL policies during the site's pre-1986 fueling operations may be obligated both to recover those past costs and to fund the cleanup work that 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.