Gas Station cleanup site — Restorical Research
Thornberg Trust
715 W Division St, Mount Vernon, Skagit County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1961. 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 gasoline station and auto repair facility from at least 1961 through 1982, with two 5,000-gallon underground storage tanks dispensing fuel on site. A 2018 investigation confirmed petroleum-impacted soil and groundwater, with the gasoline contamination characterized as extremely weathered — consistent with releases from decades-old operations. Planned remediation includes removal of both USTs and the most heavily impacted soils, with longer-range options under evaluation encompassing groundwater treatment, vapor extraction, in-situ remediation, and long-term monitoring. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address715 W Division St, Mount Vernon, Skagit County
Historical UseGas Station
Est. Operating Since1961
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline/TPH) and lead detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #14877

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 petroleum hydrocarbons and lead documented in soil and groundwater here trace to a gasoline station that operated entirely within the pre-1986 window — when occurrence-based Commercial General Liability policies were standard and carried no effective pollution exclusion in Washington. The extremely weathered character of the contamination anchors the release to those historical operations, not any recent event. UST removal, soil excavation, and the groundwater and vapor treatment options now under active consideration represent remediation expenditures that historical carriers whose policies were in force during the 1961–1982 operational period 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.