DEQ accepting comment on Ash Grove exploration project -

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DEQ accepting comment on Ash Grove exploration project

Tuesday, December 10, 2019/Categories: Department of Environmental Quality/Tags:

HELENA – The Montana Department of Environmental Quality is accepting public comment on a Draft Environmental assessment for a shale-clay exploration project proposed by Ash Grove Cement Company, which currently operates a cement plant and associated limestone quarry near Montana City, Mont.


DEQ received an amendment to Ash Grove’s Exploration License on Oct. 11, 2019 to extract a 10,000-ton bulk sample of shale for chemical testing. The site is above Ash Grove’s existing Clark Gulch Quarry off Jackson Creek Road just west of Montana City in Jefferson County.


In addition to the bulk sample, Ash Grove would construct an approximately one-mile haul road to access the test pit area and would complete four drill holes in the area.


DEQ prepared a draft Environmental Assessment to analyze potential impacts from the proposed project. The public is invited to submit comments on the draft EA until end of business on Friday, January 3, 2020. Interested parties can view the draft EA online at: 


Comments can be submitted by email to:  Written comments may also be submitted by mail to: Jake Mohrmann, Hard Rock Mining Program, Montana DEQ, 1520 E. 6th Ave., Helena, MT 59601.


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