Bulk Plant cleanup site — Restorical Research
Kingdome
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a bulk fuel distribution terminal predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property housed a 15,000-gallon diesel underground storage tank that supplied fuel to a boiler plant serving the King Street Train Station under Burlington Northern Railroad. The UST had been closed in place at an unknown date and was discovered during excavation in late 1993. Cleanup activities have included removal of the UST and 250 cubic yards of surrounding soil, an additional 50 cubic yards of over-excavation, disposal of 379 tons of contaminated soil, recovery of 15,000 gallons of diesel product from the tank, and treatment of 15,000 gallons of affected groundwater through dewatering and pumping. Remediation work is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Bulk Plant
AddressSeattle, King County
Historical UseBulk Plant
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsDiesel fuel and petroleum hydrocarbons detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #9977

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 diesel contamination at this property stems from a bulk fuel storage tank that served railroad operations well before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The tank had been abandoned in place long before its 1993 discovery, indicating a release history rooted in decades-old operations. Documented remediation expenditures — tank removal, extensive soil excavation and disposal, product recovery, and groundwater treatment — represent costs that historical carriers who insured the operators during the pre-1986 period may be obligated to reimburse and to fund as cleanup continues.

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.