Gas Station cleanup site — Restorical Research
Shell 120726
1605 NW Gilman Blvd, Issaquah, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1972. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property operated as a Texaco service station with three underground storage tanks — one 8,000-gallon leaded gasoline tank and two 10,000-gallon unleaded gasoline tanks — installed in 1972 and decommissioned in April 1993. Environmental monitoring at the site dates to at least 1991, and a remedial investigation and corrective action plan was completed in 2013 under the Voluntary Cleanup Program. Groundwater contamination including benzene and petroleum hydrocarbons was remediated to below cleanup levels, and the site has achieved No Further Action status. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address1605 NW Gilman Blvd, Issaquah, King County
Historical UseGas Station
Est. Operating Since1972
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsBenzene and petroleum-gasoline hydrocarbons (non-halogenated organics) detected in groundwater, remediated to below cleanup levels
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6225

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 contamination from underground storage tanks installed in 1972 — including benzene and gasoline-range hydrocarbons in groundwater — originated from operations that began fourteen years before 1986, when occurrence-based Commercial General Liability policies were the industry standard. The documented remediation required to bring groundwater below cleanup levels represents expenditures tied directly to releases from those pre-1986 tank operations. Historical carriers who issued CGL policies covering this Texaco station during its 1972–1986 operational window may still be obligated to recover those cleanup costs.

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.