The studies, images, official correspondence, and other documents we host on this page reflect our ongoing, collaborative work with the Wisconsin Department of Natural Resources (WDNR) and other experts throughout our cleanup efforts at the Wauleco property.

You can find additional information about each report—and download the reports themselves—by clicking Learn more under each document summary.

Wood waste-burning soil-sampling study

This report compiles key findings from a 2019 soil-sampling study performed to determine whether soil near the Wauleco site at 125 E. Rosecrans in Wausau contained dioxins resulting from wood waste-burning performed decades earlier. The investigation concluded these practices did not generate dioxin levels that exceed state standards.

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WDNR response to soil-sampling study

This letter from the WDNR confirms the WDNR’s satisfaction with the wood waste-burning soil-sampling study Wauleco performed—and its conclusions—regarding the potential for aerial deposition of dioxins and furans. The study conclude such deposition was not associated with Wauleco’s historic activities.

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PCP degradation study

This technical memorandum compiles lines of evidence from our study of natural pentachlorophenol (PCP) degradation in the environment. Our findings help us better understand how we can promote favorable conditions for natural PCP decay near the Wauleco property.

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WDNR review of PCP degradation study

This letter from the WDNR indicates the WDNR’s agreement with Wauleco’s PCP degradation study regarding the natural degradation of PCP in the environment, along with its request for additional field studies.

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Bio-trap study work plan

This work plan outlines a study Wauleco performed at the request of the WDNR to further investigate the natural degradation of PCP in the groundwater plume and evaluate site conditions on the Wauleco property.

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WDNR approval of bio-trap study work plan

This letter from the WDNR approves the sampling and analysis strategy of our bio-trap study work plan regarding PCP degradation in the environment.

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LNAPL site investigation report

This report gathers key findings from a study we performed to determine pentachlorophenol (PCP) levels at the Wauleco site, and how those levels impact residual-phase light-non-aqueous phase liquid (LNAPL).

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Bio-trap study results regarding PCP degradation

The results presented in this report demonstrated that PCP is biodegrading in groundwater within the residual phase light non-aqueous phase liquid (LNAPL) footprint, through the central portion of the groundwater plume, and in downgradient groundwater.

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WDNR response to bio-trap study results regarding PCP degradation

The WDNR concurred with the report findings stating that PCP is naturally biodegrading at the Wauleco site.

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