Gas Station cleanup site — Restorical Research
Bang USTs
12631 & 12633 NE Woodinville Dr, Woodinville, 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 operated as a gasoline service station from at least 1922 through approximately 1976, with three underground storage tanks holding Richfield gasoline dispensed to the public until the fueling dispensers and canopy were removed around that year. Cleanup activities have included excavation and off-site treatment and disposal of petroleum-contaminated soil, removal of the underground storage tanks (completed in 2015), installation of a groundwater extraction system at an adjacent property linked to the Bang site, and installation of a vapor barrier. Cleanup work is ongoing under Washington State's Standard Cleanup program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address12631 & 12633 NE Woodinville Dr, Woodinville, King County
Historical UseGas Station
Est. Operating Since1922
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (NWTPH-Gasoline, BTEX) and total lead from leaking USTs detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #3236

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.

The petroleum contamination at this property — NWTPH-Gasoline, BTEX compounds, and total lead — originated from underground storage tanks installed and operating by at least 1922, more than six decades before 1986 when occurrence-based Commercial General Liability policies were still the industry standard and carried no effective pollution exclusion. Documented remediation expenditures here span soil excavation, tank removal, groundwater extraction, and vapor barrier installation — a cost trail tied directly to those pre-1986 fueling operations. Historical carriers who issued CGL policies during the decades this site dispensed gasoline may be obligated to both recover those cleanup costs and fund remediation work 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.