On Thursday, Nov. 30, 2017, the public comment period began for the proposed renewal of an Arizona Pollutant Discharge Elimination System (AZPDES) Permit for National Park Service's South Rim Wastewater Treatment Plant.
Comments may be submitted as follows:
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By Mail: (Must be postmarked or received by Dec. 30, 2017)
Water Quality Division
1110 W. Washington Street
Phoenix, AZ 85007