Gas Station cleanup site — Restorical Research
ARCO 5236
14656 Ambaum Blvd SW, Burien, King County
Restorical Research
Preliminary Site-Specific Analysis

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

This property operated as ARCO Service Station No. 5236, a fuel-dispensing facility with underground storage tanks, dispenser islands, and a station kiosk. The presence of total lead alongside gasoline-range organics in groundwater confirms releases dating to the leaded-gasoline era, well before 1986. Cleanup under the Voluntary Cleanup Program has been underway since at least 1996 and has included UST removal, dispenser and kiosk demolition, air sparging, soil vapor extraction, and the installation of additional monitoring wells as recently as 2011. Remediation remains ongoing, with BP West Coast Products LLC identified as the responsible party. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address14656 Ambaum Blvd SW, Burien, King County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range organics (GRO), BTEX, and total lead detected in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #7995

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.

Leaded-gasoline residues in the groundwater tie the contamination at ARCO 5236 directly to fueling operations conducted during the era when occurrence-based CGL policies were standard — policies issued to ARCO and its predecessors covering this station's daily dispensing risk. More than two decades of documented remediation costs — tank removals, soil vapor extraction, air sparging, and long-term monitoring — have already accrued, and active cleanup continues. The historical carriers who underwrote this station's operations during the leaded-gasoline years may be obligated both to reimburse past expenditures and to fund the remediation still ahead.

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.