6 p.m. (MST - Arizona)
Patagonia Elementary and High School – Multipurpose Room 200 Naugle Avenue Patagonia, Arizona 85624

PUBLIC HEARING | Air Quality Permit Significant Revision for South32 Hermosa Project

ADEQ is holding a public hearing to receive comments on the proposal to issue a significant permit revision for an air quality control permit to South32 Hermosa, Inc., for its zinc, silver and manganese mine located in Santa Cruz County, Arizona.

  • Date: Thursday, Dec. 10, 2026

  • Time: 6 p.m. (MST - Arizona)

  • Location: Patagonia Elementary and High School – Multipurpose Room
    200 Naugle Avenue
    Patagonia, Arizona 85624

Resources:

  • Public Notice and Related Documents | View >