NPDES Permit for Wesco Operating, Inc., Lander Field in Wyoming

Under National Pollutant Discharge Elimination System permit number WY-0000221, Wesco Operating, Inc., is directed to have no discharge from the Lander Field NW Discharge oil production site located on the Wind River Indian Reservation in Fremont County, Wyoming.

The EPA is accepting public comment on the reissuance of this permit through October 30, 2026.

Current Permit

• WY-0000221 Wesco Operating, Inc., Lander Field NW Discharge Final Permit (pdf) (120.71 KB, October 10, 2017)
• WY-0000221 Wesco Operating, Inc., Lander Field NW Discharge Statement of Basis (pdf) (225.38 KB)

Draft Permit

• WY-0000221 Wesco Operating Inc. - Lander Field Draft NPDES Permit (pdf) (643.35 KB, September 28, 2026)
  The draft NPDES discharge permit.
• WY-0000221 Wesco Operating Inc. - Lander Field Draft Statement of Basis (pdf) (1 MB, September 28, 2026)
  The statement of basis for the draft NPDES discharge permit.