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Public Notice: Opportunity to Comment on Draft Permit for the Yellowstone National Park Pesticide Permit in Wyoming

Opportunity to Comment on Draft Permit for the Yellowstone National Park Pesticide Permit in Wyoming
How to Comment
Comments Due
July 30, 2025

You may comment on the proposed action by email using subject line “WY-0000005 Public Comment” to:
Alysia Tien (tien.alysia@epa.gov)

If you cannot adequately address comments via email, please reach out to Ms. Tien at (303) 312-7021 to discuss alternative arrangements.

Publish Date
June 30, 2025

Summary

The EPA Region 8 intends to issue a National Pollutant Discharge Elimination System (NPDES) permit under the authority of Section 402 of the Clean Water Act.

Activity

Pesticide application performed by the National Park Services, related to several native fish restoration projects, for the removal of nonnative fish found within the proposed work area. The GPS locations within the Yellowstone National Park for the beginning and end of the project areas for pesticide application into receiving waters are as follows:

  • Buffalo Creek: Latitude: 45.028429, Longitude: -110.301223 to Latitude: 44.949731, Longitude: -110.307854
  • Tower Creek: Latitude: 44.790268, Longitude: -110.542800 to Latitude: 44.894832, Longitude: -110.383661
  • Carnelian Creek: Latitude: 44.801551, Longitude: -110.466256 to Latitude: 44.894832, Longitude: -110.383661

Authorization to discharge for pesticide application is limited to these pest management areas/locations, as specifically listed in the Permit. The facility will not be using or disposing of sludge as part of these permitted activities.

Public Comments

The public comment period ends 30 calendar days after the date of publication of this notice. Any interested person may submit written comments on the draft permit. Comments should be directed to Alysia Tien at the address listed in the box at right. If you cannot adequately address comments via email, please reach out to Ms. Tien at the contact information provided to discuss alternative arrangements. All comments received prior to the end of the comment period will be considered in the formulation of any final permit determination and will be part of the administrative record. Any interested person may request a public hearing and the EPA will hold a hearing if the response to this notice indicates significant public interest. The EPA is also requesting comments on the possible adverse effects of reissuing the permit on historic properties and/or cultural resources in the area. The EPA is the Clean Water Act (Act) Section 401 certifying authority for this draft permit because the permitted area is located on Lands of Exclusive Federal Jurisdiction within Yellowstone National Park. The EPA is also seeking comment on Section 401 certification considerations.

Permit Availability

The full administrative record – including all data submitted by the applicant – is electronically available upon request for public inspection. The draft permit and the statement of basis for the draft permit are available for download below. For further information, please reach out to Ms. Tien at the contact information provided.

Notification and details of any public comment period extension will be posted here. Interested parties on our email list will also be notified by email. If you wish to be added to our email list, there is a link to subscribe at About Region 8's NPDES Permit Program.

Permittee

Brian Ertel, Fisheries Biologist
Yellowstone Center for Resources
National Park Service
P.O. Box 168
Yellowstone National Park, WY 82190

Permit Number
WY-0000005

Related Documents

  • WY-0000005 Yellowstone National Park Pesticide Draft Permit (pdf) (888.38 KB, June 30, 2025)
    The draft NPDES discharge permit.
  • WY-0000005 Yellowstone National Park Pesticide Draft Statement of Basis (pdf) (1.7 MB, June 30, 2025)
    The statement of basis for the draft NPDES discharge permit.
Contact Us About NPDES Permits Around the Nation to ask a question, provide feedback, or report a problem.
Last updated on June 30, 2025
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