Clean Air Act Operating Permit Program; Order on Petition for Objection to State Operating Permit for the South32 Hermosa Project
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Issuing agencies
Abstract
The Environmental Protection Agency (EPA) Administrator signed an order dated May 30, 2025, granting in part and denying in part a petition dated September 13, 2024, from the Center for Biological Diversity, Patagonia Area Resource Alliance, Sierra Club, Arizona Mining Reform Coalition, Calabasas Alliance/La Alianza Calabasas, and Friends of the Santa Cruz River. The Petition requested that the EPA object to a Clean Air Act (CAA) title V operating permit issued by the Arizona Department of Environmental Quality (ADEQ) to South32 Hermosa Project ("Hermosa") for its zinc, lead, manganese, and silver mine in Santa Cruz County, Arizona.
Full Text
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<title>Federal Register, Volume 90 Issue 189 (Thursday, October 2, 2025)</title>
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[Federal Register Volume 90, Number 189 (Thursday, October 2, 2025)]
[Notices]
[Page 47750]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-19262]
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ENVIRONMENTAL PROTECTION AGENCY
[FRL-12834-01-R9]
Clean Air Act Operating Permit Program; Order on Petition for
Objection to State Operating Permit for the South32 Hermosa Project
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice of final order on petition.
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SUMMARY: The Environmental Protection Agency (EPA) Administrator signed
an order dated May 30, 2025, granting in part and denying in part a
petition dated September 13, 2024, from the Center for Biological
Diversity, Patagonia Area Resource Alliance, Sierra Club, Arizona
Mining Reform Coalition, Calabasas Alliance/La Alianza Calabasas, and
Friends of the Santa Cruz River. The Petition requested that the EPA
object to a Clean Air Act (CAA) title V operating permit issued by the
Arizona Department of Environmental Quality (ADEQ) to South32 Hermosa
Project (``Hermosa'') for its zinc, lead, manganese, and silver mine in
Santa Cruz County, Arizona.
FOR FURTHER INFORMATION CONTACT: Catherine Valladolid, EPA Region 9,
(415) 947-4103, <a href="/cdn-cgi/l/email-protection#f086919c9c91949f9c9994de939184989582999e95b0958091de979f86"><span class="__cf_email__" data-cfemail="2056414c4c41444f4c49440e434154484552494e45604550410e474f56">[email protected]</span></a>. The final Order and
Petition are available electronically at: <a href="https://www.epa.gov/title-v-operating-permits/title-v-petition-database">https://www.epa.gov/title-v-operating-permits/title-v-petition-database</a>.
SUPPLEMENTARY INFORMATION: The EPA received a petition from the Center
for Biological Diversity, Patagonia Area Resource Alliance, Sierra
Club, Arizona Mining Reform Coalition, Calabasas Alliance/La Alianza
Calabasas, and Friends of the Santa Cruz River dated September 13,
2024, requesting that the EPA object to the issuance of operating
permit no. 96653, issued by the ADEQ to Hermosa in Santa Cruz County,
Arizona. On May 30, 2025, the EPA Administrator issued an order
granting in part and denying in part the petition. The order explains
the basis for the EPA's decision.
Sections 307(b) and 505(b)(2) of the CAA provide that a petitioner
may request judicial review of those portions of an order that deny
issues in a petition. Any petition for review shall be filed in the
United States Court of Appeals for the appropriate circuit no later
than December 1, 2025.
Dated: September 19, 2025.
Michelle Angelich,
Acting Director, Air and Radiation Division, Region IX.
[FR Doc. 2025-19262 Filed 10-1-25; 8:45 am]
BILLING CODE 6560-50-P
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