NN0000019: Arizona Public Service Company Four Corners Power Plant, San Juan County, NM

Discharger Name: Arizona Public Service Company
Discharger Address: P.O. Box 53999, Phoenix, Arizona 85072-3999
Facility Name: APS Four Corners Power Plant
Facility Location Address: 20 Miles SW of Farmington, San Juan County, New Mexico 87416
Facility Rating: Major
This permit was issued on: November 9, 2020
This permit shall become effective on: December 1, 2020
This permit shall expire at midnight on: November 30, 2025

• NPDES Permit Modification: APS Four Corners Power Plant (pdf) (1.26 MB, December 1, 2023)
  Permit modification under National Pollutant Discharge Elimination System (NPDES) Permit No. NN0000019 for Arizona Public Service Company Four Corners Power Plant, Fruitland, NM 87416.
• NPDES Permit Modification Fact Sheet: APS Four Corners Power Plant (pdf) (285.76 KB, December 2023)
  EPA Fact Sheet for modification of National Pollutant Discharge Elimination System (NPDES) Permit No. NN0000019 to Arizona Public Service Company Four Corners Power Plant, Fruitland, NM 87416.
• EPA Response to Comments: Permit Modification of the APS Four Corners Power Plant Permit (pdf) (19.45 MB, December 2023)
  EPA has summarized and responded to the public comments concerning the modification of the APS Four Corners Power Plant NPDES Permit No. NN0000019.
• Notice of Final Permit Decision: APS Four Corners Power Plant (pdf) (164.08 KB, November 9, 2020)
  Final Permit Decision for Discharge of Treated Effluent NPDES Permit No. NN0000019 for the Arizona Public Service Company (APS) Four Corners Power Plant.
• NPDES Permit No. NN0000019: APS Four Corners Power Plant (pdf) (1.57 MB, November 9, 2020)
  Authorization to Discharge Under National Pollutant Discharge Elimination System (NPDES) Permit No. NN0000019 to Arizona Public Service Company Four Corners Power Plant, Fruitland, NM 87416.
• NPDES Permit Fact Sheet: APS Four Corners Power Plant (pdf) (246.61 KB, February 17, 2021)
  EPA Fact Sheet for National Pollutant Discharge Elimination System (NPDES) Permit No. NN0000019 to Arizona Public Service Company Four Corners Power Plant, Fruitland, NM 87416.