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PUBLIC NOTICE | Notice of Proposed Rulemaking | Numeric Surface Water Quality Standards Update

Public Notice

Notice of Proposed Rulemaking | Numeric Surface Water Quality Standards Update

Posted on: May 30, 2024 - 12:20 p.m.

On May 17, 2024, the comment period begins for the Notice of Proposed Rulemaking to amend Arizona Administrative Code R18-13-308 to modify A.C.C. Title 18, Chapter 11, Article 1 to: update the criteria applied to surface water quality standards used by ADEQ to protect public health to the levels required by EPA; modify the designated uses of some WOTUS protected by the CWA to reflect how those WOTUS are currently used; and make technical edits to Appendix B to ensure waterbody descriptions are accurate. The comment period ends Aug. 2, 2024.

Review Documents:

  • Notice of Proposed Rulemaking | View > 
  • Numeric Surface Water Quality Standards Update Rulemaking Page | Learn More >
  • Or in person at the ADEQ Record Center | Learn How >

Public Comment Period:

Dates: May 17, 2024 – Aug. 2, 2024

Comments may be submitted as follows:

  • By Email | Send Email >     
  • By Mail (Must be postmarked or received by Aug. 2, 2024):

ADEQ
Water Quality Division, Surface Water Quality

Attn: Jonathan Quinsey
1110 W. Washington St.
Phoenix, AZ  85007

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