Gas Station cleanup site — Restorical Research
Shell 121094
31660 Pacific Hwy S, Federal Way, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1957. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This gasoline service station property dates to 1957, when the building was constructed per King County Assessor records. Four single-wall steel underground storage tanks — for gasoline and waste oil — were installed between 1964 and 1970, none equipped with corrosion protection. Petroleum products and benzene were identified in groundwater, prompting environmental monitoring as early as 1991 and a site relinquishment assessment in 1990. The original tanks were replaced with double-wall fiberglass tanks in 1993, and following remediation under the Voluntary Cleanup Program, Ecology issued a No Further Action determination in 2009. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address31660 Pacific Hwy S, Federal Way, King County
Historical UseGas Station
Est. Operating Since1957
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons and benzene detected in groundwater, remediated below cleanup levels
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #5555

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.

Underground storage tanks at this property were installed and operated continuously from 1964 through their 1993 replacement — spanning more than two decades of the pre-1986 occurrence-based CGL era, when policies carried no effective pollution exclusion. The petroleum and benzene contamination remediated in groundwater here is consistent with long-term releases from unprotected single-wall steel tanks of exactly that vintage. Historical carriers who wrote CGL policies covering this station during its 1964–1986 operating window may be obligated to respond to the remediation costs incurred to achieve the site's 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.