PUBLIC NOTICE | AZPDES General Permit Modifications

To simplify implementation of the new Arizona Surface Water Protection Program (SWPP), ADEQ will modify the existing AZPDES General Permits (GPs) to extend coverage to state-listed waters. Our goal is to have the modified permits finalized by mid-August.

Permits to be modified include:

  • Construction General Permit (CGP)
  • Multi Sector General Permit (MSGP)
  • Mining Multi Sector General Permit (Mining MSGP)
  • De Minimis General Permit (DMGP)
  • Phase II MS4 General Permit (MS4 GP)
  • Pesticides General Permit (PGP)

Additionally, language clarifying the existing regulatory requirement that new or expanded discharges directly to Outstanding Arizona Waters are prohibited will be added to the CGP, DMGP, PGP and MS4 GP. No other general permit conditions or requirements are changing with the exception of the small MS4 general permit and PGP, which are currently being revised as part of reissuance.

Application for a permit under the modified GP will not change; the myDEQ process will remain the same, and existing permit holders will not need to apply for a new permit, except for PGP and MS4 GP permittees, who must reapply upon final reissuance of those permits.

Public Comment Period

Dates: June 15, 2021 – July 30, 2021

To make it easier for you to provide comments, ADEQ is piloting an online comment platform. Using this platform, you will be able to add your comments directly on the GPs without having to copy and paste or write a detailed letter/email explaining the location of your comment. You will also be able to see others' comments.

To use the online platform to comment:

  • Visit the online platform web page | Visit Online Platform >
  • Register to log in. You will only need to do this once: Click the button in the upper right and provide your name and email address. You will receive an email with instructions to set up a password. Click the password setup link in the email to log in and create a password.
    Note: Your email will not be made public.
  • Provide comments. Documents available for comment will be listed on your home screen. Select the document you wish to review and comment on. Click the applicable location in the document, type your comment, select an option from the Comment Type drop-down (suggestion or question), and click Add Comment. This saves your comment to the document.
  • Comment on another document or exit platform. When you've finished commenting on a document, you may return to the homescreen and select another document, or close the page.

Commenting online is the preferred option as it adds transparency and will assist staff in streamlining the preparation of responsiveness summaries. However, you may choose to submit comments as follows:

     By Email | Send Email >
     By Mail (Must be postmarked or received by July 30, 2021):
       Attn: David Lelsz, Ph.D.
       Water Quality Division, Surface Water Section
       1110 W. Washington St.
       Phoenix, AZ  85007

Review Documents

Documents are available for download/review on our online comment platform. Please see instructions at the top of each of the following page links for reviewing draft permits and fact sheets, and see the above instructions for leaving comments (note that you do not need to register to download/review documents). 

CGP | View >
MSGP | View > 
Mining MSGP | View >
DMGP | View >
MS4 GP | View >
PGP | View >

Published Public Notice in the Arizona Administrative Register (June 11, 2021) | View >

You may also review these documents in person at the ADEQ Record Center | Learn How >

Webinar Information

To inform permit holders of general permit modifications that will extend coverage to state-listed waters, ADEQ held a webinar on June 3, 2021.

Meeting Presentation | View/Download >
Attendee Questions/Comments | View/Download >


Please contact the Surface Water Protection Program | Email >