Gas Station cleanup site — Restorical Research
Shell Station 120993
2461 4th Ave S, 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 Shell-branded wholesale fuel facility with underground storage tanks and dispenser islands. Groundwater monitoring data spanning from 1993 through 2012 documented petroleum hydrocarbon and BTEX contamination, and lead along with 1,2-Dibromoethane (EDB) — a leaded gasoline additive — were detected in groundwater, indicating releases dating to the era of leaded fuel. Cleanup activities under the Voluntary Cleanup Program have included an active soil vapor extraction system, groundwater monitoring across multiple wells, and decommissioning of remediation wells as cleanup objectives were met. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address2461 4th Ave S, Seattle, King County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (TPH-gasoline range), BTEX compounds, lead, and 1,2-Dibromoethane (EDB) detected in groundwater and soil vapor
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6694

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 detection of lead and EDB in groundwater at this site ties the contamination directly to the use of leaded gasoline, which was phased out before 1986 — squarely within the window when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. Nearly two decades of documented remediation expenditures — vapor extraction, long-term groundwater monitoring, well installation and decommissioning — were incurred to address releases that originated during that pre-1986 operational period. Historical carriers who covered the facility's operators when leaded fuel was still in use may be obligated both 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.

Ready to learn more?

Contact Us

This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.