MPCA – Quarterly PolyMet permitting update

MPCA Quarterly Update
The following is a summary of the Minnesota Pollution Control Agency’s (MPCA) activities through December 2016 regarding applications submitted by Poly Met Mining, Inc. (PolyMet) for its proposed NorthMet mine and processing plant.

The MPCA and DNR will send out quarterly messages summarizing activities and documents added to the project website in the previous quarter. It is also the MPCA’s goal to notify the public in advance of any permit comment period or other opportunity for public participation.

Air quality permit
On August 24, 2016, PolyMet submitted an air permit application to the MPCA. MPCA determined the application was complete for processing and has been reviewing the air modeling reports and other elements of the permit application. The air modeling protocols, permit application, and MPCA’s “completeness letter” are posted online:

Individual wastewater NPDES/SDS water quality permit
On July 11, 2016, PolyMet submitted an application for an NPDES/SDS water quality permit. MPCA determined the application was complete for processing and has been reviewing the application. MPCA has added the following to the project website: the permit application, a number of related reference and correspondence documents, the MPCA’s “completeness letter,” and an update to the permit application submitted by PolyMet.  For more information, see

401 water quality certification
On August 2, 2016, PolyMet submitted a 401 certification request to the MPCA. Since that time, MPCA has been coordinating with DNR and US Army Corps of Engineers in reviewing the request. The request and related application materials are available here:

You can find the most current information about other permits and approvals at the state’s PolyMet web portal:

You are receiving this message as a subscriber to the PolyMet email notification list.  This list is hosted by the Department of Natural Resources (DNR). It is used jointly by MPCA and DNR to provide regular updates and share information about key steps in the permitting/certification processes, including opportunities for public comment.