PUBLIC NOTICE | Proposed Significant Revision to Air Quality Control Permit for Freeport-McMoRan Safford in Graham County

ADEQ proposes to issue Significant Permit Revision Number 87668 to Freeport-McMoRan Safford, Inc. for amendment of the NOX emission limits for the acid plant of Freeport-McMoRan - Safford Operations facility located in Graham County, 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 (PM), particulate matter with aerodynamic diameter less than 10 microns (PM10), particulate matter with aerodynamic diameter less than 2.5 microns (PM2.5), carbon monoxide (CO), sulfur dioxide (SO2), volatile organic compounds (VOCs), and hazardous air pollutants (HAPs).


Freeport-McMoRan Safford Inc.

Facility Location

Freeport-McMoRan Safford Operations
8500 N. Freeport-McMoRan Road
Safford, AZ 85548

Permit Type

Class II Air Quality Control Permit

Review Documents

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

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

Public Comment Period 

Dates: Feb. 17, 2021 - March 18, 2021

Comments may be submitted as follows:
     Email | Send Email >  
     Mail (Must be postmarked or received by March 18, 2021):

       Balaji Vaidyanathan
       Facilities Emissions Control Section
       1110 W. Washington St., 3415A-1
       Phoenix, AZ  85007