Gas Station cleanup site — Restorical Research
Exxon 73287
2841 S 188th, Seatac, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1971. 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 gasoline station since 1971 and remains active today as a 76-branded facility with four auto service bays and four pump islands. In 1995, five underground storage tanks totaling approximately 25,500 gallons of capacity were removed along with 620 cubic yards of contaminated soil, followed by removal of two hydraulic hoists and an additional 15 cubic yards of soil in 2001. An air-sparging and soil-vapor-extraction system operated from 1995 to 1998, recovering 310 pounds of hydrocarbons; a replacement AS/SVE system installed in 2012 continues to operate, and quarterly groundwater monitoring has been ongoing since 1991. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address2841 S 188th, Seatac, King County
Historical UseGas Station
Est. Operating Since1971
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (TPH) and liquid-phase hydrocarbons (LPH) from leaking USTs in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #11092

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 originated from faulty product piping and historical underground storage tanks — some reportedly installed prior to 1929 — that were in service well before 1986, when occurrence-based Commercial General Liability policies still carried no effective pollution exclusion. More than three decades of documented remediation expenditures — tank removals, large-scale soil excavation, two generations of vapor-extraction systems, and continuous groundwater monitoring — represent costs that historical carriers who issued CGL policies during the pre-1986 operational window may be obligated both to reimburse and to fund as cleanup continues under the Voluntary Cleanup Program.

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.