Apply to the department for an EPA identification number using the EPA form 8700-12. You may obtain information from the department by phone (608) 266-2111. The form is available at: https://www.epa.gov/hwgenerators/instructions-and-form-hazardous-waste-generators-transporters-and-treatment-storage-and
Wis. Admin. Code Department of Natural Resources NR 667.0012