Gas Station cleanup site — Restorical Research
Green Lake Condominiums
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

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

This property operated as ARCO Service Station No. 4051, a convenience store and gas station with fuel-dispensing infrastructure including a pump island. Gasoline-range hydrocarbons, BTEX compounds, and lead were detected in groundwater as early as July 1991, with lead concentrations consistent with historical leaded-gasoline usage. Cleanup under the Standard Cleanup program has included major soil excavation, installation and operation of soil vapor extraction and air sparging systems for groundwater treatment, a period of bioventing, and construction of monitoring wells — with active operations and maintenance running from at least 1995 through 1999. The property has since been redeveloped as the Green Lake Condominiums. 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 SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range petroleum hydrocarbons (WTPH-G), BTEX, and lead detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #6401

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 presence of lead in groundwater at this site is a chemical signature of leaded gasoline, which was largely phased out before 1986 — placing the origin of contamination squarely within the era when occurrence-based CGL policies carried no effective pollution exclusion in Washington. Decades of documented remediation expenditures — excavation, vapor extraction, air sparging, bioventing, and long-term groundwater monitoring — were incurred to address releases from those pre-1986 fueling operations. Historical carriers who issued policies to ARCO or its predecessors during the station's operating years may still be obligated to recover past cleanup costs and to fund the remediation that remains.

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.