Gas Station cleanup site — Restorical Research
UNOCAL 5004
Bellevue, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1962. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property operated as UNOCAL Service Station 5004 in Bellevue from approximately 1962, with two fuel service islands, three underground steel fuel storage tanks (two at 7,500-gallon capacity and one at 10,000 gallons), a 280-gallon waste oil tank, and service bays equipped with hydraulic lifts. Between May 1990 and May 1991, cleanup activities removed the underground storage tanks, product lines, hydraulic lifts, and approximately 2,160 cubic yards of contaminated soil, with material treated on-site or disposed off-site. A vapor extraction system was then installed and operated from May 1992 through August 1993 to remediate remaining soil contamination. Cleanup work is ongoing under the Standard Cleanup program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
AddressBellevue, King County
Historical UseGas Station
Est. Operating Since1962
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from leaking underground fuel storage tanks and waste oil detected in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #8869

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 fuel storage and dispensing infrastructure installed around 1962 — more than two decades before occurrence-based Commercial General Liability policies ceased reliably covering pollution claims in 1986. The documented remediation expenditures here — tank and soil removal across thousands of cubic yards, plus over a year of vapor extraction operations — represent substantial cleanup costs tied directly to those pre-1986 fueling operations. Historical carriers who issued CGL policies to UNOCAL during that operational window may be obligated both to recover costs already incurred and to fund the cleanup work that remains.

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.

Ready to learn more?

Contact Us

This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.