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PSI completed the case closure documentation and it was submitted to the WDNR in November/December 2016. It has been reviewed by the WDNR and they requested additional information and changes to the submittal. PSI prepared these changes and resubmitted them in August 2017. Additional information for off-site retraction letters was submitted in December 2017. PSI prepared additional information to substantiate the request to retract the offsite notification letter to the UPRR property to the west. In addition and as requested by the WDNR, PSI prepared a summary letter of a comparsion of PSI's chromium test results vs Hygienetics' chromium test results and test locations in relationship to the western adjoining railroad line and submitted it to the WDNR. PSI prepared a proposal to perform additional site investigation activities on this parcel January 7, 2020. An additional groundwater monitoring well was installed on January 25, 2021. PSI will be collecting groundwater samples to be analyzed for the presence of Dissolved Chromium, Hexa Chromium and Tri Chromium on January 28, 2021. PSI will also evaluate for emerging contaminants.
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