Gas Station cleanup site — Restorical Research
Unocal Station 5062
3714 Tieton Drive, Yakima County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1961. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property was developed as Unocal Service Station 5062 in 1961, equipped with one 10,000-gallon and two 7,500-gallon underground gasoline storage tanks, along with waste oil and heating oil tanks and two service bays. Remediation under the Voluntary Cleanup Program ran from October 1988 through June 1989 and included removal of all underground storage tanks — at least one of which showed corrosion and a small hole — excavation of approximately 960 cubic yards of petroleum-contaminated soil, soil aeration and off-site disposal, backfilling, and abandonment of groundwater monitoring wells. The site has received a No Further Action determination. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address3714 Tieton Drive, Yakima County
Historical UseGas Station
Est. Operating Since1961
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from leaking underground gasoline, waste oil, and heating oil storage tanks detected in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6476

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 property originated from underground storage tanks installed in 1961 and operated for nearly three decades — the entire span falling within the era of occurrence-based Commercial General Liability policies that carried no effective pollution exclusion in Washington. The documented remediation costs — tank removal, excavation of nearly a thousand cubic yards of contaminated soil, off-site disposal, and well abandonment — were incurred to address releases directly tied to those pre-1986 operations. Historical carriers who issued CGL policies to Unocal or its predecessors during that operational window may still be obligated to cover those cleanup expenditures.

Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.

Recovering Costs from an Older Cleanup

If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.

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 — Cost Recovery
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim and negotiate recovery of costs already incurred. Restorical's forensic accounting team re-establishes and documents past cleanup expenditures, managing the claim process to ensure the insurance companies fulfill their obligation 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.