Gas Station cleanup site — Restorical Research
Boeing Field Chevron
10805 Tukwila International Blvd, Tukwila, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1940. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property operated as a gas and service station from at least 1940 through approximately 1984, with multiple underground storage tanks and pump islands dispensing gasoline and diesel fuel under the Chevron brand. Cleanup activities have been ongoing since 1990 and have included multiple phases of UST removal and soil excavation, free-product recovery using vacuum trucks, bailing, absorbent socks, and automated skimmer systems, as well as long-term groundwater and LNAPL monitoring. More recent remediation efforts in 2022–2023 have involved in situ chemical oxidation and total liquids removal pilot tests, with soil vapor extraction also proposed and groundwater monitoring continuing into 2024. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address10805 Tukwila International Blvd, Tukwila, King County
Historical UseGas Station
Est. Operating Since1940
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline, diesel) and lead from leaking USTs detected in soil and groundwater, with LNAPL (free product) present
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7030

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 — gasoline, diesel, and lead from the era of leaded fuel — originated from underground storage tanks and fuel-dispensing infrastructure installed and operated over more than four decades before 1986. Occurrence-based CGL policies issued to the station's operators during that pre-1986 window carried no effective pollution exclusion under Washington law and remain enforceable today. Over three decades of documented remediation expenditures — tank removals, soil excavation, free-product recovery, chemical oxidation, and ongoing monitoring — represent costs that historical carriers may be obligated both to reimburse and to continue funding as cleanup work proceeds.

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.