Gas Station cleanup site — Restorical Research
Chevron 94964
Woodinville, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1970. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This Woodinville property operated as a Chevron gasoline service station with multiple underground storage tanks — a 12,000-gallon gasoline UST, a 4,000-gallon gasoline-diesel UST, and a 2,000-gallon waste oil UST — with contamination attributed to periodic tank overfill and surface spillage. Cleanup under the Voluntary Cleanup Program has included removal of the waste oil UST, excavation and off-site disposal of five tons of contaminated soil, installation of a vapor extraction and air sparge remediation system, and ongoing quarterly groundwater monitoring. Remediation work is continuing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
AddressWoodinville, King County
Historical UseGas Station
Est. Operating Since1970
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline-range) and waste oil detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #5859

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 originated from underground storage tank operations dating to approximately 1970, well within the era when occurrence-based Commercial General Liability policies carried no effective pollution exclusion. The documented remediation expenditures — tank removal, soil excavation, an active vapor extraction and air sparge system, and years of quarterly groundwater monitoring — represent costs tied directly to those pre-1986 fueling operations. Historical carriers who issued CGL policies during the station's early decades of operation may be obligated both to recover past cleanup costs and to fund the remediation that remains ahead.

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.