Gas Station cleanup site — Restorical Research
Ambaum Food Mart
12609 Ambaum Blvd SW, Burien, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1974. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

The Ambaum Food Mart has operated as a gas station and convenience store at this location since at least 1974, when the facility building was constructed, with an 8,000-gallon and a 10,000-gallon underground storage tank supplying two gasoline dispensers under a canopy. A prior No Further Action determination was issued in 1996 for different tanks at a different location on the same property, indicating a history of UST operations extending back well before that decade. Gasoline-range petroleum hydrocarbons and BTEX contamination — attributed to a leaking underground storage tank — were identified in January 2023, and the site is currently awaiting comprehensive cleanup; initial investigation activities to date have consisted of soil borings and establishment of a drum staging area for investigation-derived waste. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address12609 Ambaum Blvd SW, Burien, King County
Historical UseGas Station
Est. Operating Since1974
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline-range TPH, BTEX) from leaking USTs detected in soil and groundwater
Media ImpactedSoil, Groundwater, Air
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #16775

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.

The underground storage tanks dispensing gasoline at this property have been in operation since at least 1974, more than a decade before 1986, when occurrence-based Commercial General Liability policies were still the industry standard and carried no effective pollution exclusion in Washington. The site's layered UST history — an earlier tank system that received a 1996 NFA and the current leaking tanks — ties the contamination directly to continuous pre-1986 fuel dispensing operations. Cleanup expenditures for investigation, design, and remediation at this site could plausibly be funded by historical CGL carriers whose policies were in force during the years the contamination first originated.

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.