Below is an example form that can be used to help you document a suspected frac sand mining permit violation. Here is a PDF of the form you can use to print Sentinel_Program.pdf (and online version here, it can be copied to be edited). Below the form, there is a guide on how to fill out this material, and contact information for how to submit reports to the Wisconsin DNR. This material can be submitted Directly to the Wisconsin DNR through their online portal here.
Wisconsin DNR contact form available in PDF here: Wisconsin_Department_of_Natural_Resources_Reporting.pdf