Skip to main content

PUBLIC NOTICE | Proposed Major Modification of AZPDES Permit (AZ0026387) Coverage for the January Mine Hermosa Project in Santa Cruz County

Public Notice No. 20-62

Published in Nogales International on April 30, 2021

AZPDES Permit No. AZ0026387

Pursuant to the Clean Water Act and in accordance with Arizona Administrative Code (A.A.C.) R18-9-A907, the Director of ADEQ proposes to modify an Arizona Pollutant Discharge Elimination System (AZPDES) Permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:


Arizona Minerals Inc.
2210 E. Fort Lowell Road
Tucson, Arizona 85719

Arizona Minerals Inc. applied for a major modification to the AZPDES permit for the addition of Outfall 002 with the proposed discharge of up to 6.48 million gallons per day (mgd) of treated mine drainage water, tailings seepage, groundwater, core cutting water, drilling water, and stormwater from the January Mine Hermosa Project Water Treatment Plant 2 to Harshaw Creek in the Santa Cruz River Basin in Township 23 S, Range 16 E, Section 4, in Santa Cruz County, Arizona. While the permit modification public notice was published on Feb. 5, 2021, ADEQ has made changes to the effluent limitations and assessment levels in the draft permit. Due to these substantial changes ADEQ is publishing another public notice with the draft permit and statement of basis.

Review Documents

Original Published Public Notice | View/Print >
Draft Permit | View >
Draft Statement of Basis | View >

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

Public Comment Period 

Dates: April 30, 2021 – May 31, 2021

Comments may be submitted as follows:
     By Email | Send Email >  
     By Mail (Must be postmarked or received by May 31, 2021):

       Devin McAllister
       Water Quality Division
       1110 W. Washington Street
       Phoenix, AZ  85007