Groundwater Testing in Marinette and Peshtigo

Marinette, Wisconsin Fire Technology Center:
Latest Updates on the Investigation

October 15, 2018 Update

We recently submitted a Site Investigation Report to the Wisconsin Department of Natural Resources (DNR). It has been reviewed by DNR staff and published on the DNR web site.

The Site Investigation Report serves the primary purpose of updating the DNR and all interested parties on initial results from the “Revised Site Investigation Work Plan” which was approved by the DNR on April 27, 2018. The Site Investigation Report includes results from boring samples, aquifer profiling, soil samples and soil logging, groundwater monitoring and surface water testing. The report includes data from the investigation activities through August 29, 2018. Additional activities identified in the Work Plan are continuing and those activities and data will be included in a future report. All investigation activities were conducted under the oversight and approval of the DNR.

As a result of this additional activity, PFAS has been detected in groundwater at levels above the HAL in two of the vertical aquifer profile samples further south in the study area. We will be conducting further investigations of these detections in groundwater. This groundwater sampling will help to better evaluate the data set in the south, as these results are not consistent with other data. We are working closely with the DNR on the additional investigations and to better understand this data. Additionally, we will begin testing private drinking water wells near Rader Road.

Also included in the Site Investigation Report is the summary of the data collected on the water samples from ditches in the general area. As a result of those studies, we identified two ditches where we will employ interim measures to address the PFAS detected. We focused our efforts to determine the pathways of these compounds entering the ditches and to identify the most appropriate interim measures to address PFAS in the ditches. One of the ditches flows through our property at the Fire Technology Center (Ditch A) and the other ditch crosses West Bay Shore Street and runs through Runnoe Park (Ditch B). We have been working closely with the DNR and the County to obtain approval for work plans, locations and necessary permits to remove the compounds from the water that is flowing through the ditches. All work is being conducted under the oversight and approval of the DNR.

We want to emphasize that these ditches do not carry drinking water. They carry surface water, and the US-EPA health advisories are based on exposure from long term drinking water ingestion, not from dermal (skin) contact with the water.

We will keep the community, as well as interested parties, informed of our progress in finalizing these interim action steps.

July 17, 2018

As part of the work plan that we submitted to the Wisconsin Department of Natural Resources (DNR) in March 2018, we have been conducting additional investigations of groundwater, soil, ditches and surface water in and around the Fire Technology Center (FTC) in Marinette and the Town of Peshtigo. In following that plan, we collected surface water samples in two ditches that run through and near the FTC and lead to Green Bay.

The laboratory results for those samples from the ditches have been received, and PFAS has been detected in the samples.

Due to the locations of the ditches and the proximity to Green Bay, we’re focusing our efforts to determine the pathways of these compounds entering the ditches and to identify potential interim measures to address PFAS in the ditches. We are working closely with DNR to obtain approval for work plans and the necessary permits to remove the compounds from the water that are flowing through the ditches. We view this as a current priority.

We have no information that indicates water in the ditches is used for drinking water purposes.

Notwithstanding, we take these results seriously. We are moving immediately to consult with DNR on the interim action steps that we can take. We are also moving quickly to collect samples from some other ditches in the City of Marinette and Town of Peshtigo that have not been sampled to date. We will continue to be transparent and keep the community, as well all interested parties, informed of our progress in finalizing these interim action steps.

July 5, 2018

Tyco has been looking into some concerns we’ve heard from a few of the residents in the area: specifically, some have spoken to us about inconveniences of using bottled water for extended periods of time. We are therefore reaching out to residents or business owners whose drinking water wells had detections of PFAS, but the levels were below the Health Advisory Level (HAL) established by the US Environmental Protection Agency (EPA) for PFOA and/or PFOS. We have decided to offer each of these homes or businesses the option to switch off of bottled water and install a “Point of Entry Treatment” (POET) water system. POET systems can effectively treat PFOA and/or PFOS in drinking water. Tyco is committed to pay for the installation, maintenance and regular monitoring of these systems.

We do want to reiterate that the sampling results indicated a detection of PFOA and/or PFOS that is below the HAL that has been set by the EPA. Nevertheless, as an accommodation to our neighbors and to provide a level of convenience, Tyco is offering these properties the choice to replace their bottled water service with the installation of a POET.

June 26, 2018 June 7, 2018 May 1, 2018 November 2017 – March, 2018



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