What does the DNR say about clean fill sites?
This is taken from the DNR's website: http://dnr.wi.gov/files/pdf/pubs/wa/wa1280.pdf
Using Waste Fill Materials in Nonmetallic Mining Reclamation
Recently, we’ve received questions about the practice of using waste materials such as foundry sand and “clean fill” at nonmetallic mine reclamation sites. Certain types of waste are considered “clean fill” under s. NR 500.08(2), Wis. Adm. Code and may be used without prior approval from the DNR. See the sidebar for a list of acceptable alternative fill materials.
Clean fill must be used in a nuisance-free and aesthetic manner and may not be placed in a floodplain. In accordance with s. NR 504.04(4)(a-f) Wis. Adm. Code, using clean fill for reclamation must not result in the taking of a threatened or endangered species, or negatively impact wetlands, surface or groundwater.
Industrial byproducts are another class of waste materials sometimes proposed for use in mine reclamation projects. Any project involving these wastes must be managed in accordance with ch. NR 538, Wis. Adm. Code, beneficial reuse rules. The wastes are assigned a category based on analytical test results and their potential to impact the environment. Their use is restricted based on these categories.
