Gas Station cleanup site — Restorical Research
Henry Bacon Building Materials
5210 E Lake Sammamish Pkwy SE, Issaquah, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1966. Historical insurance policies issued during operations at this property and through 1986 could recover the cleanup costs already paid.

This property has been in continuous commercial use since at least 1936, initially for agricultural purposes before warehouse buildings were constructed in 1966. Three underground storage tanks with gasoline dispensers operated on-site until their decommissioning in January 1989. Groundwater contamination — including benzene, xylenes, and gasoline-range hydrocarbons exceeding MTCA Method A cleanup levels — was confirmed in multiple monitoring wells, prompting a remedial investigation, feasibility study, and remedial action under the Voluntary Cleanup Program. The site has since received a No Further Action determination and currently operates as a building materials warehouse and lumber yard. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address5210 E Lake Sammamish Pkwy SE, Issaquah, King County
Historical UseGas Station
Est. Operating Since1966
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsBenzene, xylenes, non-halogenated solvents, and gasoline-range petroleum hydrocarbons detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #7791

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 storage and dispensing at this property began no later than 1966, placing more than two decades of fuel-handling operations squarely within the era of occurrence-based Commercial General Liability policies that carried no effective pollution exclusion. The benzene and gasoline-range hydrocarbon contamination confirmed in groundwater here is directly attributable to those pre-1986 fueling operations. The remediation expenditures required to bring this site through investigation, cleanup, and ultimately to No Further Action status represent costs that historical CGL carriers on the risk during that operational window 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.