On Sept. 2, 2021, the public comment period begins for the proposed modification of Arizona Pollutant Discharge Elimination System (AZPDES) permit (AZS000002) coverage to Pima County for their Municipal Separate Storm Sewer System (MS4) Phase I. The public comment period ends Oct. 2, 2021.
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Comments may be submitted as follows:
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By Mail: (Must be postmarked or received by Oct. 2, 2021)
Water Quality Division
1110 W. Washington St.
Phoenix, Arizona 85007