PUBLIC NOTICE | Proposal to Issue Air Quality Control Renewal Permit for Mud Springs Well-Field Site in Greenlee County

ADEQ proposes to issue Air Quality Control Renewal Permit Number 89536 to Freeport Minerals Corporation for the continued operation of a well-field site located in the Upper Eagle Creek groundwater basin near Morenci, Arizona. The facility is subject to the requirements of the Federal Clean Air Act, Code of Federal Regulations, Arizona Revised Statute 49-426, and the Arizona Administrative Code, Title 18, Chapter 2. The facility emits the following air contaminants: nitrogen oxides (NOx), particulate matter nominally less than 10 micrometers (PM10), particulate matter nominally less than 2.5 micrometers (PM2.5), volatile organic compounds (VOCs), carbon monoxide (CO), sulfur dioxide (SO2) and hazardous air pollutants (HAPs).


Freeport Minerals Corporation

Facility Location

Mud Springs Well-Field Site
33° 23' N, 109°29' W, 5,000 ft
Morenci, Greenlee County, Arizona 85540

Permit Type

Class II Air Quality Control Permit

Review Documents

Original Published Public Notice | View > 
Draft Permit | View > 
Draft Technical Support Document | View >

You may also review the above documentation in person at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: July 7, 2021 – Aug. 5, 2021

Comments may be submitted as follows:
     Email | Send Email >  
     Mail (Must be postmarked or received by Aug. 5, 2021):

       Balaji Vaidyanathan
       Facilities Emissions Control Section
       1110 W. Washington St.
       Phoenix, AZ  85007

People who file comments on the permit will have the right to appeal the final decision as an appealable agency action to the Office of Administrative Hearing (OAH) pursuant to §41.1092.03, and the appeal must be filed within 30 days after the issuance of the final decision. The OAH may sustain, modify or reverse the final decision.