Gas Station cleanup site — Restorical Research
Dairy Barn
4710 Auburn Way N, Auburn, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1970. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property was developed as a retail gasoline station in the early 1970s on land previously used as farmland, adjacent to the former Auburn Valley 6 Drive-In. Three underground storage tanks — one 8,000-gallon and two 10,000-gallon — were installed and operated for nearly two decades before being removed in 1991. Petroleum contamination, including benzene, was identified in groundwater, prompting remediation under Washington's Voluntary Cleanup Program. A Site Characterization and Remedial Action Summary Report was completed in November 2020, and the site received a No Further Action opinion from Ecology in April 2021. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address4710 Auburn Way N, Auburn, King County
Historical UseGas Station
Est. Operating Since1970
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsBenzene and petroleum hydrocarbons (gasoline-range) detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #10469

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.

Gasoline dispensing operations at this property began in the early 1970s and continued through 1991, placing the entire operational history squarely within the era of occurrence-based Commercial General Liability policies that carried no effective pollution exclusion. The benzene and petroleum hydrocarbon contamination found in groundwater here is directly attributable to those pre-1986 UST operations. The remediation costs required to bring this site to No Further Action status — investigation, characterization, and cleanup spanning decades — are the type of documented expenditures that historical CGL carriers may be obligated to reimburse.

Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.

Recovering Costs from an Older Cleanup

If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.

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 — Cost Recovery
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim and negotiate recovery of costs already incurred. Restorical's forensic accounting team re-establishes and documents past cleanup expenditures, managing the claim process to ensure the insurance companies fulfill their obligation 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.