Gas Station cleanup site — Restorical Research
Tanglewilde Chevron
Olympia, Thurston 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 operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

This property has operated as a Chevron gasoline service station with multiple underground storage tanks and fuel dispenser islands, and formerly included an automobile repair shop that operated until 1998. Cleanup activities have included removal of at least 30 cubic yards of impacted soil, decommissioning of USTs and hydraulic hoists totaling 2,000 gallons in tank volume, installation of Stage II vapor recovery equipment and groundwater monitoring wells, and quarterly groundwater monitoring ongoing since at least 2000. The station remains an active gasoline retail facility with three 10,000-gallon USTs currently in place. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
AddressOlympia, Thurston County
Historical UseGas Station
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons and lead from leaded gasoline detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #6636

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.

Contamination at this site — petroleum hydrocarbons and lead from leaded gasoline — points to releases that originated well before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The presence of total lead in both soil and groundwater confirms fueling operations during the leaded-gasoline era, and the decommissioning of older USTs and hydraulic hoists in 1998 is consistent with infrastructure installed decades earlier. The documented remediation costs already incurred — soil removal, tank decommissioning, monitoring well installation, and years of quarterly groundwater sampling — along with ongoing cleanup obligations represent expenditures that historical carriers 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.