EPA Denies Caerus Piceance Facility Permit Objection
Summary
The EPA issued a final order denying a petition from the Center for Biological Diversity (CBD) requesting that the EPA object to operating permit no. 03OPGA267 issued by the Colorado Department of Public Health and Environment to Caerus Piceance, LLC for its Hunter Mesa Water Treatment Facility in Garfield County, Colorado. The EPA Administrator signed the order on November 19, 2025, finding that the permit meets Clean Air Act requirements. Any petition for judicial review must be filed by June 9, 2026.
What changed
The EPA has issued a final order denying a petition from the Center for Biological Diversity (CBD) requesting that the EPA object to an operating permit issued by the Colorado Department of Public Health and Environment to Caerus Piceance, LLC for its Hunter Mesa Water Treatment Facility in Garfield County, Colorado. The EPA determined that the state-issued operating permit meets Clean Air Act requirements.\n\nFor affected parties, this order means the EPA has declined to exercise its authority to object to the state permit, and the facility may continue operating under the existing CDPHE permit. Environmental groups seeking to challenge the permit must now pursue judicial review in federal court by June 9, 2026, per sections 307(b) and 505(b)(2) of the Clean Air Act.
What to do next
- Monitor for potential judicial review filings by June 9, 2026
Archived snapshot
Apr 11, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Notice
Clean Air Act Operating Permit Program; Order on Petition for Objection To State Operating Permit for Caerus Piceance, LLC-Hunter Mesa Water Treatment Facility
A Notice by the Environmental Protection Agency on 04/10/2026
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- Public Inspection Published Document: 2026-06905 (91 FR 18456) Document Headings ###### Environmental Protection Agency
- [FRL-13172-01-R8]
AGENCY:
Environmental Protection Agency (EPA).
ACTION:
Notice of final order on petition.
SUMMARY:
The Environmental Protection Agency (EPA) Administrator signed an order dated November 19, 2025, denying a petition dated March 27, 2025, from the Center for Biological Diversity (CBD). The petition requested that the EPA object to a Clean Air Act operating permit issued by the Colorado Department of Public Health and Environment (CDPHE) to Caerus Piceance, LLC for its water treatment facility, Hunter Mesa Water Treatment Facility, located in Garfield County, Colorado.
FOR FURTHER INFORMATION CONTACT:
Julia Witteman, EPA Region 8, telephone number: (303) 312-6156, email address: witteman.julia@epa.gov. The final order and petition are available electronically at: https://www.epa.gov/title-v-operating-permits/title-v-petition-database.
SUPPLEMENTARY INFORMATION:
The EPA received a petition from CBD dated March 27, 2025, requesting that the EPA object to the issuance of operating permit no. 03OPGA267, issued by CDPHE to Caerus Piceance, LLC for the Hunter Mesa water treatment facility. On November 19, 2025, the EPA Administrator issued an order denying the petition. The order itself 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 June 9, 2026.
Cyrus Western,
Regional Administrator, Region 8.
[FR Doc. 2026-06905 Filed 4-9-26; 8:45 am]
BILLING CODE 6560-50-P
Published Document: 2026-06905 (91 FR 18456)
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