Gas Station cleanup site — Restorical Research
Commercial Property
Stanley, Chippewa County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1939. Historical insurance policies issued during those prior operations and through 1986 could help fund the ongoing cleanup and groundwater monitoring obligations that Wisconsin DNR continues to oversee.

This property operated as a gas station and auto repair facility from at least the late 1930s through the 1970s, with auto repair operations continuing into the 1990s. Underground storage tank vent piping and a former pump island remain visible on site, though UST removal was never documented and no tank system site assessment was ever conducted. A Phase II investigation in 2024 confirmed severe groundwater contamination, with benzene concentrations exceeding Wisconsin DNR enforcement standards by more than 260 times, along with elevated levels of toluene, naphthalene, ethylbenzene, and trimethylbenzenes across all three monitoring wells. That history could support an insurance coverage claim against the carriers who issued policies more than 40 years ago — coverage that could help fund the cleanup ahead.

Former Use
Former Gas Station
LocationStanley, Chippewa County
Historical UseGas Station
Est. Operating Since1939
DNR ProgramLeaking UST Program
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (benzene, toluene, ethylbenzene, naphthalene, trimethylbenzenes) in groundwater
Regulatory ProgramWisconsin DNR — NR 700
BRRTS #03-09-595834

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 Wisconsin — and those policies may provide coverage that remains enforceable today. 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 fueling and auto repair operations at this property began in the late 1930s and continued through the 1970s, placing decades of contaminating activity squarely within the pre-1986 policy period. With benzene in groundwater exceeding Wisconsin DNR enforcement standards by more than 260 times and contamination confirmed across all three monitoring wells, the further investigation, remediation, and long-term groundwater monitoring required to achieve LUST program closure represent substantial future costs that the historical carriers insuring those pre-1986 operations may be obligated to fund.

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

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 viable insurance coverage exists to fund the cleanup, 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.