Read the full press release (Wisconsin DNR)

MADISON, Wis. – Today, the Wisconsin Department of Natural Resources (DNR) received analytical sample results from surface water monitoring conducted in July by Johnson Controls, Inc. (JCI) and its subsidiary Tyco Fire Products, LP (Tyco) associated with the ongoing PFAS investigation at their Fire Technology Center in Marinette, Wisconsin.

The data submitted by JCI/Tyco includes results from surface water collected approximately 10 feet downstream of the Ditch A and B treatment systems (sample ID SW-40 and SW-39, respectively). Laboratory analytical results for Ditch B indicated PFAS concentrations of 1,000 ppt for PFOA and 73 ppt for PFOS, in addition to concentrations of other PFAS compounds.

Laboratory analytical results for Ditch A indicated concentrations of 6.9 ppt for PFOA and 6.2 for PFOS. The DNR’s complete case file for the JCI/Tyco Fire Technology Center is also available on the DNR’s BRRTS on the Web (BOTW) database.

DNR and JCI/Tyco have agreed to meet as necessary during the coming weeks to discuss JCI/Tyco’s plans to remedy the contamination in Ditch B. DNR anticipates more information on next steps will be available and provided during the DNR’s next JCI/Tyco listening session on Sept. 16, 2020…”