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Public Notice
Water Quality

On Friday, Jan. 13, 2023, the public comment period begins for the decision to issue a State 401 Water Quality Certification to Mayo Clinic for the Mayo Discovery Oasis in Phoenix, Arizona. The comment period ends on Feb. 12, 2023.

Public Notice Information

Pursuant to the Clean Water Act (CWA) Section 401 and in accordance with Arizona Administrative Code R18-1-401, the ADEQ Director intends to issue a State 401 Water Quality Certification to the following applicant:

Applicant Information

Mayo Clinic, Attn.: Roshanak Didehban

Project Name: Mayo Discovery Oasis

Project Location: 56th Street and Mayo Boulevard, Phoenix, Arizona

ADEQ LTF No.: 97236

Review Documents

Original Published Public Notice | View/Download > 
Draft Clean Water Act 401 Certification | View/Download >

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

Public Comment Period 

Dates: Jan. 13, 2023 – Feb. 12, 2023

Comments may be submitted as follows:
     By Email | Send Email > 
     By Mail (Must be postmarked or received by Feb. 12, 2023):

       Rosi Sherrill
       Surface Water Section Project Manager
       1110 W. Washington St.
       Phoenix, AZ  85007