Gas Station cleanup site — Restorical Research
Fremont Bridge Approach
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1917. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

The 4th Avenue strip at the Fremont Bridge Approach is adjacent to a former service station that operated from approximately 1917 until at least 1950, releasing gasoline-range petroleum hydrocarbons and BTEX compounds that migrated into both soil and groundwater. Petroleum contamination was first detected at the site in 1995, with TPH-G and BTEX concentrations confirmed to exceed MTCA cleanup levels. Planned remediation calls for special handling and disposal of contaminated soil removed during excavations, and treatment of extracted groundwater with granulated activated carbon or off-site disposal during dewatering. 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 Since1917
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range petroleum hydrocarbons (TPH-G) and BTEX compounds (benzene, toluene, ethylbenzene, xylenes) in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #4173

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 contamination here traces to a service station that ran for more than three decades — from approximately 1917 to at least 1950 — entirely within the era when occurrence-based CGL policies were the industry standard in Washington. The TPH-G and BTEX releases that now exceed MTCA cleanup levels in soil and groundwater originated from operations that predated 1986 by at least 36 years. Excavation, contaminated-soil disposal, dewatering, and activated-carbon treatment costs the property owner will incur going forward are precisely the type of cleanup expenditures that historical carriers who issued policies during that long operational window may still be obligated to fund.

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.