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PUBLIC NOTICE | Proposed Renewal of AZPDES Permit (AZ0025798) Coverage for the Frito-Lay Casa Grande Facility

Public Notice No. 19-14

Published in Arizona Business Gazette on Sept. 19, 2019

AZPDES Permit No. AZ0025798

ADEQ proposes to issue an Arizona Pollutant Discharge Elimination System (AZPDES) renewal permit to discharge pollutants to Waters of the United States to the following applicant, subject to certain effluent limitations and special conditions:


Frito-Lay, Inc.
1450 W. Maricopa Highway
Casa Grande, AZ 85222

Facility Information

Frito-Lay, Inc. applied for a renewal AZPDES permit for the proposed discharge of up to 0.69 million gallons per day (mgd) of treated process wastewater from chip manufacturing from the Frito-Lay Casa Grande Facility. The facility discharges to the St. Carlos Irrigation District canal which directly enters an unnamed wash, tributary to the North Branch of the Santa Cruz in the Santa Cruz River Basin in Township 6 S, Range 5 E, Section 14, in Pinal County, Arizona. The Frito-Lay Casa Grande Facility pre-treats it’s process wastewater by screening to remove large solids and then discharges to a transfer sump; solids generated from the pretreatment screening process are hauled off site. Oily wastewater from the fryer boilouts flows to the oil/water separator, where a skimmer belt removes oil, and then sends to the transfer sump. Starch water from the potato slice washer overflow is treated by a starch removal system. Food-grade defoamer, such as Hydrite Chemical Company's Suppressor 3579S, is used to control the foam during starch recovery process. The clarified low starch wastewater is then discharged to the transfer sump. This wastewater can also be recycled into the manufacturing process as well as agricultural irrigation. All on-site sanitary wastewater and the LPRO reject stream is discharged to the City of Casa Grande Wastewater Treatment Plant via sewer line.

Review Documents

Original Published Public Notice | View/Print > 
Draft Permit | View > 
Draft Fact Sheet | View > 
Notice to Permittee | View > 

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

Public Comment Period 

Dates: Sept. 19, 2019 – Oct. 19, 2019

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by Oct. 19, 2019):

       Jessica Kohls
       Water Quality Division
       1110 W. Washington Street
       Phoenix, AZ  85007