PFAS cleanup site — Restorical Research
Chippewa Valley Airport Pfas
Eau Claire, Chippewa County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a facility associated with PFAS-containing materials going back to 1945. Historical insurance policies issued during operations at this property and through 1986 could help fund the multi-phase investigation and remediation work ahead under Wisconsin DNR oversight.

This facility has been in continuous operation since 1945, with fire rescue services requiring the routine use of aqueous film-forming foam (AFFF) fire suppression systems beginning in the 1960s. Annual AFFF testing discharged an estimated 15–25 gallons of foam concentrate per year at a designated testing area, introducing per- and polyfluoroalkyl substances (PFAS) into the subsurface over decades of operations. PFAS has been detected at actionable levels in groundwater, including in the adjacent municipal well field serving 17 potable wells and in approximately eight private wells within 1,200 feet of the site. Multiple site investigations under Wisconsin DNR Environmental Remediation Program oversight have been underway since 2021 to delineate the extent of the PFAS groundwater plume. 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
LocationEau Claire, Chippewa County
Historical UsePFAS
Est. Operating Since1945
DNR ProgramEnvironmental Remediation Program
Contamination & Investigation
Site Assessment Summary
ContaminantsPer- and polyfluoroalkyl substances (PFAS) from aqueous film-forming foam (AFFF) in groundwater
Regulatory ProgramWisconsin DNR — NR 700
BRRTS #02-09-588115

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.

AFFF-based fire suppression operations at this facility began decades before 1986, with routine foam discharges introducing PFAS into soil and groundwater throughout the 1960s, 1970s, and beyond. The ongoing groundwater investigation, plume delineation, and remediation of PFAS contamination affecting the municipal well field and nearby private wells represent substantial future costs that those historical carriers 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.

Request more information on this property

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.