| Comments: |
PSI has completed revisions to the previously submitted closure documentation for this case, as requested by the WDNR and have received comments of the revisions for the client. PSI has prepared a draft of a Site Investigation and Remedial Action Report (SIRAR) and following review it was submitted to the WDNR in June 2018. PSI prepared a proposal to perform additional site investigation activities on this parcel January 7, 2020. Field activities in regard to the evaluation of soil vapors was performed on January 21, 2021 and collected vapor samples have been submitted to the laboratory for evaluation for the presence of PVOC + Naphthalene. Based upon the review of the laboratory test results and field collected data, there is no evidence that indicates vapor intrusion into the existing building, surrounding buildings or surrounding public and private underground utilities that has or potentially may occur at this time from the encountered petroleum VOCs or Methane level within the subsurface conditions present on the Subject Property. PSI also evaluated for emerging contaminants. Walmart has given approval to evaluate for the presence of PFASs within the groundwater associated with the existing wells. These sampling activities were completed in August 2022 and the report submitted to the WDNR . Additional groundwater sampling for the presence of PFASs were performed in February 2023, June 2023 and September 2023. These reports were forwarded to the client for submittal approval. The client approved and these reports have been submitted to the WDNR. Site Investigation Report has been sent to the client for their review and approval to submit to the WDNR.
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