Hundreds of closed landfills in Wisconsin are required to perform groundwater monitoring and reporting. Typically, the frequency of monitoring, size of the monitoring well arrays, and the list of required parameters, was established many years ago as part of the landfill operating permit or closure plan approval. There is a potential to reduce, or terminate landfill monitoring when groundwater quality improvements are documented. WDNR guidance entitled “Reducing or Terminating Groundwater Monitoring at Solid Waste Landfills,” (PUB-WA 1013) provides instructions for requesting reductions to monitoring requirements.
Learn about new revisions to the WDNR guidance, developed with input from the WDNR’s Waste and Materials Management Study Group, which are intended to improve both the range of options for monitoring reductions and the process for requesting reductions. In addition to providing procedures for reduction in monitoring frequency, new revisions to the guidance include procedures for requesting reductions to the required number of monitoring wells and parameters. The revised guidance also provides instructions for communicating monitoring reduction requests to the WDNR review hydrogeologists.
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