Regulatory Documents

Twin Metals Minnesota is seeking permission through a Special Use Permit (SUP) to access Superior National Forest lands for future hydrogeologic study activities involving the collection of groundwater data. The study will provide valuable data for mapping groundwater and its interaction with surface water, documenting current baseline conditions, and supporting the environmental review and permitting process. The following documents have been submitted to appropriate state and federal agencies.

Federal Regulatory Documents
Notice of Hydrogeologic Special Use Permit Oct. 21, 2013

Appendix A Hydrogeologic Special Use Permit Map Oct. 23, 2013

View Updated Documents at:

State of Minnesota Regulatory Documents
Notice of State Hydrogeologic Field Activities Nov. 20, 2012

Figure 1 Hydrogeologic Well Sites and New Access Roads on State and Private Lands Nov. 20, 2012

Figure 2 Locations of Proposed Hydrogeologic Well Sites and Access Roads Nov. 20, 2012