Industrial & Manufacturing cleanup site — Restorical Research
Seattle Air Corp
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1971. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

Seattle Air Corp operated as a commercial airport facility at Boeing Field International in King County, with an underground waste oil storage tank servicing its operations. In 1996, the 500-gallon waste oil UST was excavated and removed after it was found to be leaking, and approximately 7 tons of petroleum-contaminated soil were excavated and disposed of off-site. The site was backfilled and restored, and confirmation soil sampling verified that cleanup standards were met; the site has received a No Further Action determination 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 Industrial & Manufacturing
AddressSeattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1971
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (waste oil) detected in soil from a leaking underground storage tank
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7736

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 waste oil tank at this airport facility was installed approximately 1971 — well within the era when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The petroleum contamination that necessitated tank removal, soil excavation, and site restoration originated from operations conducted under those pre-1986 policies. Historical carriers who provided CGL coverage to the facility's operators during that window may still bear obligation for the documented cleanup expenditures incurred to remediate the leaking UST and restore the property to standards.

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.