On Sept. 3, 2026, the comment period begins for the preliminary decision to issue a significant amendment to an Individual Aquifer Protection Program (APP) Permit to Frito-Lay, Inc., for the Frito-Lay, Inc. Casa Grande Facility located in Pinal County, Arizona. The comment period ends Oct. 2, 2026.

Aquifer Protection Permit (APP) No.: 100381

Frito-Lay, Inc. has applied for a Significant Amendment to revise facility discharge monitoring to align with Arizona Pollutant Discharge Elimination System (AZPDES) monitoring, revise groundwater monitoring frequencies at facility groundwater monitoring wells, insert alert levels and aquifer quality limits into groundwater monitoring tables based on ambient monitoring, and extend the duration of ambient monitoring for pollutants that could not yet demonstrate limits were appropriate to establish.

Permittee:

Frito-Lay, Inc.

Facility:

1450 W. Maricopa Highway
Casa Grande, Arizona 85193
Pinal County

Review Documents: 

• Updated Public Notice* | View Notice >
• Draft Permit | View Permit >
• Draft Executive Summary | View Summary >
• In person at ADEQ Record Center | Learn How >

Public Comment Period:

Dates: Sept. 3, 2026 – Oct. 2, 2026

Comments may be submitted as follows:

• By Email | Send Email >
• By Mail (Must be postmarked or received by Oct. 2, 2026):

ADEQ
Water Quality Division, Groundwater and Reuse
Attn: Travis Ralston
1110 W. Washington St.
Phoenix, AZ  85007