Gas Station cleanup site — Restorical Research
Arboretum Court 1
3127 E Madison St, 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 a former ARCO gasoline service station (Facility No. 4329) before the station was demolished. Contamination from petroleum products — including gasoline-range organics (GRO), diesel-range organics (DRO), BTEX compounds, MTBE, and lead — has been documented in groundwater at the site. Cleanup under the Voluntary Cleanup Program has involved multiple in-situ chemical injection events using magnesium sulfate and ammonium sulfate for anaerobic bio-oxidation, disposal of generated wastewater, and multi-year semi-annual and quarterly groundwater monitoring. Remediation work is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address3127 E Madison St, Seattle, King County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (GRO, DRO, BTEX, MTBE) and lead detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #2635

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 direct marker of leaded gasoline contamination, tying the source of the release to operations predating 1986 — the year leaded gasoline was phased out of commercial use. Occurrence-based Commercial General Liability policies issued to ARCO or its operators during that pre-1986 window carried no effective pollution exclusion in Washington and remain enforceable against documented cleanup costs. The remediation expenditures here — repeated chemical injection campaigns, wastewater disposal, and years of intensive monitoring — are the type of costs those historical carriers may be obligated both to recover and to fund going forward.

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.