PFAS cleanup site — Restorical Research
Auburn Municipal Airport
Auburn, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a facility using PFAS-containing firefighting foam going back to 1971. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

The Auburn Municipal Airport has operated at this location since at least 1971, when two 8,000-gallon underground storage tanks were installed to store aviation fuel for aircraft fueling operations. The USTs remained in service until 1998 and have since been excavated and removed along with contaminated soil and a cement pad. Existing asphalt pavement now serves as an engineering control, isolating shallow groundwater from surface contact. Cleanup is ongoing under the Standard Cleanup program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former PFAS
AddressAuburn, King County
Historical UsePFAS
Est. Operating Since1971
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from aviation fuel USTs detected in soil and shallow groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #9649

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.

Aviation fuel storage and dispensing at this airport began fifteen years before 1986, during the era when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The contamination addressed here — petroleum releases from underground storage tanks operated continuously from 1971 through 1998 — is precisely the kind of long-duration, operations-linked release those pre-1986 policies were written to cover. Documented remediation expenditures to date, and any further cleanup costs still ahead, represent obligations the historical carriers who insured the airport during that window may be required both to reimburse 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.