Gas Station cleanup site — Restorical Research
BP 11255
19924 International Blvd, Seatac, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1973. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

This property has operated as a retail fueling station since it was built in 1973, initially as a Mobil Gas station through 1989 and continuing today as BP 11255, with three underground storage tanks totaling 28,000 gallons of capacity and six dispenser islands under a single canopy. Cleanup activities have included historical UST removal and replacement with associated excavation, light non-aqueous phase liquid (LNAPL) product recovery, and operation of a soil vapor extraction system that removed 1,600 pounds of hydrocarbons before being decommissioned. Remediation is ongoing, with multi-year groundwater monitoring in progress and pilot testing of SVE, air sparging, and in-situ chemical oxidation (ISCO) underway as remedial alternatives for soil and groundwater impacts continue to be evaluated. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address19924 International Blvd, Seatac, King County
Historical UseGas Station
Est. Operating Since1973
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline/LNAPL) and lead detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #10257

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 contamination here originated from gasoline releases tied to dispenser and product piping operations that began in 1973 — more than a decade before 1986, when occurrence-based Commercial General Liability policies had no effective pollution exclusion. Lead detected in groundwater samples is consistent with the historical use of leaded gasoline, which was phased out of retail sale before 1986, further anchoring the contamination's origins in that pre-exclusion era. The documented remediation trail — UST replacement, LNAPL recovery, vapor extraction, and an active program of groundwater monitoring and injection pilot tests — represents expenditures that historical carriers who issued CGL policies during the station's pre-1986 operational window may be obligated both to recover and to fund going forward.

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.