Gas Station cleanup site — Restorical Research
UNOCAL 2147
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1941. 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 1941, originally as Unocal Service Station 2147 and now as an active BP station at Fremont Avenue North and North 46th Street in Seattle. The facility underwent rebuilding and tank installations in 1962 and 1979, with underground storage tanks removed in both 1986 and 1991. Cleanup under Ecology's standard program has included excavation of approximately 1,500 cubic yards of contaminated soil, installation of vapor extraction wells, and ongoing quarterly and semiannual groundwater monitoring that continues today. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
AddressSeattle, King County
Historical UseGas Station
Est. Operating Since1941
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range petroleum hydrocarbons and BTEX detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #8735

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.

Gasoline-range hydrocarbons and BTEX contamination at this site trace directly to underground storage tanks installed and operated across four decades before 1986 — a period when occurrence-based CGL policies carried no effective pollution exclusion in Washington. The documented remediation costs — tank removals, large-scale soil excavation, vapor extraction infrastructure, and decades of groundwater monitoring — were incurred to address releases tied to those pre-1986 operations. Historical carriers who wrote CGL coverage for this station during its 1941-through-1985 operational window may be obligated both to recover past cleanup expenditures and to fund the 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.