PFAS cleanup site — Restorical Research
Mason Companies Inc
Chippewa Falls, Chippewa County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a facility associated with PFAS-containing materials predating 1986. Historical insurance policies issued during those prior operations and through 1986 could help fund the multi-phase investigation and remediation work ahead under Wisconsin DNR oversight.

PFAS contamination has been confirmed in groundwater beneath this Chippewa Falls property, with multiple compounds exceeding Wisconsin DNR NR 140 enforcement standards — including PFOS at more than three times the enforcement standard and PFHxS at nearly twice the standard. Environmental assessment has identified an adjacent former chrome plating facility as the likely source of the PFAS release, an industry known to use PFAS-containing materials. Sampling across five monitoring wells spanning multiple properties has revealed a widespread groundwater plume that crosses property boundaries, and the site remains an active Wisconsin DNR Environmental Remediation Program case with additional groundwater investigation directed. 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 PFAS
LocationChippewa Falls, Chippewa County
Historical UsePFAS
Est. Operating SincePredating 1986
DNR ProgramEnvironmental Remediation Program
Contamination & Investigation
Site Assessment Summary
ContaminantsPer- and polyfluoroalkyl substances (PFAS) including PFOS, PFOA, and PFHxS in groundwater
Regulatory ProgramWisconsin DNR — NR 700
BRRTS #02-09-596628

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 PFAS contamination at this site traces to industrial chrome plating operations at an adjacent property that were active well before 1986, releasing PFAS-containing materials that have resulted in a widespread groundwater plume confirmed through sampling across five monitoring wells spanning multiple properties. The additional groundwater investigation, plume delineation, and remediation work directed by the Wisconsin DNR Environmental Remediation Program to bring PFAS compounds — including PFOS and PFHxS — below NR 140 enforcement standards represent substantial future costs that Commercial General Liability 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.