Gas Station cleanup site — Restorical Research
Risdon MS Portables
6928 116th Ave SE, Newcastle, 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.

Petroleum contamination was discovered at this Newcastle property during construction work in 2021 and 2022, near an old catch basin that indicates the release originates from historical fuel-related infrastructure rather than a recent event. Remedial excavation has removed approximately 30 tons of petroleum-contaminated soil, and the site is currently undergoing multi-year cleanup activities including soil and air sampling and a vapor intrusion assessment under an independent action with Washington State Ecology. Cleanup work remains in progress. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address6928 116th Ave SE, Newcastle, King County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline-range petroleum hydrocarbons (GRPH/TPH-G), BTEX, and diesel- and oil-range petroleum hydrocarbons detected in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #16857

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 contaminant profile here — gasoline-range petroleum hydrocarbons, BTEX, and diesel- and oil-range hydrocarbons — is characteristic of historical fuel dispensing operations, and the presence of an old catch basin as the apparent contamination source points to infrastructure established well before modern environmental oversight. Occurrence-based Commercial General Liability policies written during earlier decades of site development carried no effective pollution exclusion in Washington, leaving historical carriers potentially obligated to fund the investigation, excavation, and vapor intrusion work now underway. For contamination tied to historical subsurface infrastructure, the pre-1986 policy window is a plausible avenue for recovering these ongoing remediation costs.

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.