Gas Station cleanup site — Restorical Research
Auburn Shell
305 A St SE, Auburn, 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.

Auburn Shell operated as a gasoline fueling center at this Auburn location with multiple underground storage tanks dispensing fuel prior to 1990. In April 1990, four USTs were removed after one failed a tightness test, accompanied by soil excavation and the installation of a vapor extraction system; a second round of soil removal in 1996 brought the total to 560 cubic yards of contaminated material across both events. In-situ bioremediation via Oxygen Release Compound injections was conducted in 1997–1998 and again in 2006, and groundwater monitoring and natural attenuation have continued since 1997 with further monitoring recommended. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address305 A St SE, Auburn, King County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline range total petroleum hydrocarbons (TPH) and gasoline constituents detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #11515

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 gasoline release at this site originated from underground storage tanks installed and operated well before 1986 — the year occurrence-based Commercial General Liability policies gave way to forms with effective pollution exclusions. The documented remediation record here spans more than three decades: four UST removals, 560 cubic yards of excavated soil, a vapor extraction system, multiple rounds of in-situ bioremediation, and ongoing groundwater monitoring. Historical CGL carriers whose policies covered Auburn Shell's fueling operations during the pre-1986 window may be obligated to recover costs already incurred and to fund the monitoring program 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.