Gas Station cleanup site — Restorical Research
BP Station 11047
33520 21st Ave SW, Federal Way, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1983. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

The gas station at this Federal Way property was built in 1983 on previously undeveloped wooded land. Operated by Mobil Oil Corp by 1986 and later by BP Oil through at least 1999, the facility's underground storage tanks were the subject of subsurface petroleum hydrocarbon investigations beginning in 1991. Remediation was conducted under the Voluntary Cleanup Program, including UST decommissioning and remedial action, and the site has received a No Further Action determination. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address33520 21st Ave SW, Federal Way, King County
Historical UseGas Station
Est. Operating Since1983
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsMTBE, benzene, and petroleum hydrocarbons (gasoline) detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #11130

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 at this site — MTBE, benzene, and gasoline-range hydrocarbons exceeding MTCA Method A cleanup levels in groundwater — originated from underground storage tank operations that began in 1983, three years before occurrence-based CGL policies gave way to forms with absolute pollution exclusions. The remediation costs incurred to address these releases and achieve No Further Action status — subsurface investigation, UST decommissioning, groundwater cleanup — fall squarely within the coverage window of historical carriers who wrote occurrence-based policies for the operators during that pre-1986 period.

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.