Public Notices: Mountain Construction Company (F010391/A0017661)

Wyoming Department of Environmental Quality | view as a webpage

Public Notices: April 1, 2025

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Electronic copies of all public notices, permit application analyses, and permit applications are now available through the IMPACT Public-Facing Website OpenAir. For more information on OpenAir, please visit our website here.

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The Division of Air Quality, proposes to approve the following requests:

Mountain Construction Company (F010391, P0039781):

CHAPTER 6, SECTION 2 CONSTRUCTION/MODIFICATION PERMIT - Department of Environmental Quality, Division of Air Quality PUBLIC NOTICE: In accordance with Chapter 6, Section 2(m) of the Wyoming Air Quality Standards and Regulations, notice is hereby given that the State of Wyoming, Department of Environmental Quality, Division of Air Quality, proposes to approve a request by Mountain Construction Company to modify Air Quality Permit CT-1919 to include the ability to perform bentonite drying in addition to the portable hot mix asphalt operation. The portable plant will be operated at various locations throughout Wyoming, initially located at 789 highway 14AE, in Lincoln County, Wyoming. Maximum production for the portable hot mix asphalt plant (HMA) is reported at 200,000 tons per year (tpy) and will use a maximum of forty percent (40%) Recycled Asphalt Pavement (RAP). The plant will also be used to dry bentonite with a maximum throughput of 140,000 tpy.

For the duration of the public comment period, the permit application, the agency's analysis, and the public notice are available for public inspection online at https://openair.wyo.gov, utilizing facility ID F010391 and permit number P0039781 under permits. This material may also be viewed online, at the above URL, utilizing a public computer at the Big Horn County Library, Basin, Wyoming. Additionally, for the duration of the public comment period a copy of this public notice is available for public inspection at the Big Horn County Clerk's Office, Basin, Wyoming. In accordance with the Americans with Disabilities Act, special assistance or alternate formats will be made available upon request for individuals with disabilities.

Written comments may be directed to Nancy Vehr, Administrator, Division of Air Quality, Department of Environmental Quality, 200 West 17th St., Cheyenne, Wyoming 82002 or by fax (307) 635-1784. Please reference A0017661 in your comment. Comments may also be submitted electronically through the Division's website (http://aq.wyomingdeq.commentinput.com). Comments submitted by email will not be included in the administrative record. All comments received by 5:00 p.m., Thursday, May 1, 2025 will be considered in the final determination on this application. A public hearing will be conducted only if in the opinion of the administrator sufficient interest is generated or if an aggrieved party so requests. Para español, visite deq.wyoming.gov.

Please note that the Wyoming Department of Environmental Quality Cheyenne Office has moved.
The new address is:

200 West 17th Street
Cheyenne, WY 82002

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