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Public Notice
Water Quality

On March 22, 2023, the public comment period begins for the proposal to issue Arizona Pollutant Discharge Elimination System (AZPDES) renewal permit number AZ0023531 to Salt River Project Agricultural Improvement and Power District (SRP) for the Agua Fria Generating Station located in Glendale, Arizona. The comment period ends April 25, 2023.

Public Notice Information

Public Notice No. 22-58

Published in: Record Reporter on March 22, 2023

AZPDES Permit No. AZ0023531

ADEQ proposes to issue an AZPDES renewal permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:



Facility Information

Salt River Project (SRP) applied for a renewal of an AZPDES permit for the discharge of cooling tower blowdown, boiler blowdown, and other low volume wastes from the Agua Fria Generating Station (AFGS) in Glendale, Maricopa County, Arizona. The discharge will be to the SRP Lateral 20 which connects to the SRP Grand Canal (a Phoenix Area Canal), a Protected Surface Water. In addition to the six (6) currently permitted electric generating units, SRP completed construction of two-natural gas-fired simple cycle “aeroderivative” combustion turbines in 2022. These new LM6000 combustion gas turbines are identified as Unit 7 and Unit 8 and combined add approximately 99 megawatt generating capacity to the AFGS. The point of discharge will be in Township 3 N, Range 1 E, Section 36 in Maricopa County, Arizona. The AFGS is an electric power generating station and is considered to be a major facility under the NPDES program.

Review Documents

Original Published Public Notice | View/Download > 
Draft Permit | View/Download > 
Draft Fact Sheet | View/Download >  

You may also review the above documentation in person at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: March 22, 2023 – April 25, 2023

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by April 25, 2023):

       Water Quality Division, Surface Water Protection
       Attn: Swathi 
       1110 W. Washington St.
       Phoenix, AZ  85007