DEQ Press Releases

Driscoll, Paul

DEQ Accepting Public Comments on a Draft Wastewater Discharge Permit for Montanore Mine

Helena – The Montana Department of Environmental Quality is accepting public comment on a draft wastewater permit for Montanore Mineral’s Montanore Project. Montanore has proposed to construct and operate an underground copper and silver mine located near Libby in Lincoln County.

The draft permit updates the existing Montana Pollutant Discharge Elimination System (MPDES) permit for the Montanore Project. This update covers the discharge of treated adit water at three existing outfalls and four new storm water-only outfalls. It incorporates technology-based and water quality-based effluent limits to ensure the limits do not cause degradation of high quality waters. The draft permit also requires Montanore to develop and maintain a Storm Water Pollution Prevention Plan.

The DEQ has prepared the draft wastewater discharge permit, fact sheet, and the department’s tentative determination. The documents are available on the DEQ website at and at the DEQ Metcalf Building in Helena. 

The DEQ will hold a public hearing to accept comments on the draft permit on August 31, 2015 beginning at 6:00 p.m. in the Ponderosa Room of the Libby City Hall located at 952 East Spruce Street in Libby. Please note: the hearing will be strictly limited to accepting comment. There will be no question and answer period.  

The deadline for comment is September 2, 2015. Comments should be sent to: DEQ Permitting and Compliance Division, Water Protection Bureau, PO Box 200901, Helena, MT.  59620, or by email to:

The State of Montana makes reasonable accommodations for any known disability that may interfere with a person’s ability to participate in state government. Persons needing an accommodation should notify Jenna Stamper at 406-444-3080 no later than August 15, 2015, to allow time to make needed arrangements. 

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