Updated: Oct. 3, 2024 - 2:00 p.m.

On Aug. 23, 2024, the comment period began for the preliminary decision to issue a significant amendment to an Individual Aquifer Protection Permit to South32 Hermosa, Inc., for its Hermosa Project located in Santa Cruz County, Arizona. The comment period was extended and now ends on Oct. 18, 2024.

Aquifer Protection Permit No.: 512235, LTF#: 101257
Water Quality

The requirements in this permit will allow the permittee to comply with the two key requirements of the Aquifer Protection Program: 1) meet Aquifer Water Quality Standards at the Point of Compliance; and 2) demonstrate Best Available Demonstrated Control Technology.

Permittee: 

South32 Hermosa, Inc.

Facility: 

Hermosa Project
749 Harshaw Road
Patagonia, AZ 85624
Santa Cruz County

Review Documents:

• Notice of Comment Period Extension | View/Download >
• Original Published Public Notice | View/Download > 
• Draft Permit | View/Download >
• Draft Executive Summary | View/Download >
• South32 Hermosa Project Permit of Interest Page | View > 
• Or in person at the ADEQ Record Center | Learn How >
  

Extended Public Comment Period:

Aug. 23, 2024 – Oct. 18, 2024

Comments may be submitted as follows:

• By Online Comment Form | Submit Comment > 
• By Mail (Must be postmarked or received by Oct. 18, 2024):

ADEQ
Water Quality Division, Groundwater Protection
1110 W. Washington St.
Phoenix, AZ  85007

• At Public Hearing | Wednesday, Oct. 2, 2024 | 6 – 8 p.m.