Gas Station cleanup site — Restorical Research
Merrill Shell
Merrill, Lincoln 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 help fund the ongoing cleanup and groundwater monitoring obligations that Wisconsin DNR continues to oversee.

Underground storage tanks at this former service station in Merrill were installed in 1990, and groundwater sampling across multiple monitoring wells has revealed petroleum hydrocarbon contamination well above Wisconsin NR 140 standards — including benzene at nearly ten times the enforcement standard and total trimethylbenzenes at more than seven times the preventive action limit. Wisconsin DNR has also flagged a trichloroethylene (TCE) vapor intrusion concern at the site, suggesting potential chlorinated solvent co-contamination beyond the petroleum findings. An environmental consultant was retained in January 2026 to prepare a remediation work plan under Wisconsin DNR LUST program oversight. 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
LocationMerrill, Lincoln County
Historical UseGas Station
Est. Operating SincePredating 1986
DNR ProgramLeaking UST Program
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (benzene, ethylbenzene, xylenes, trimethylbenzenes, naphthalene) and trichloroethylene (TCE) in groundwater and soil vapor
Regulatory ProgramWisconsin DNR — NR 700
BRRTS #03-35-596073

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.

The 1990 underground storage tank installation at this property likely replaced earlier petroleum infrastructure, a pattern consistent with the long operational histories of service station sites and suggesting that fueling operations here may date back well before 1986. The groundwater remediation needed to address benzene and trimethylbenzene concentrations exceeding NR 140 standards, the TCE vapor intrusion investigation, and the ongoing compliance monitoring required under Wisconsin DNR LUST program oversight represent substantial future costs that carriers insuring the businesses that operated here before 1986 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.