Public Works cleanup site — Restorical Research
Metro Transit South Dearborn
802 S Dearborn St, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility going back to 1966. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property served as a Metro transit operating facility, warehouse, and vehicle service garage from at least 1966, with fueling, maintenance, and parking operations on site for decades. Five underground storage tanks holding motor oil, unleaded gasoline, and diesel were decommissioned in December 1990, and a roughly 40-year-old wooden building on the east parcel was demolished that same year. Site investigations identified petroleum hydrocarbons, benzene, halogenated organics, and non-halogenated solvents in groundwater beneath the property. The site has received a No Further Action determination under the state's Standard Cleanup program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Address802 S Dearborn St, Seattle, King County
Historical UsePublic Works
Est. Operating Since1966
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (diesel, gasoline, motor oil), benzene, halogenated organics, and non-halogenated solvents detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #6455

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.

Petroleum fueling and vehicle maintenance operations at this property date to at least 1966 — two full decades before occurrence-based Commercial General Liability policies began incorporating effective pollution exclusions. The contamination detected in groundwater — petroleum products, benzene, halogenated organics, and solvents — is consistent with the slow, cumulative releases typical of long-running transit fueling operations with underground storage tanks. Historical CGL carriers who covered Metro's transit operations during that pre-1986 window may still bear obligations for the investigation and remediation costs incurred to bring this site to its No Further Action status.

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.