Why do I need an AZPDES Construction Activity General Permit (CGP) for Stormwater?

This permit is for stormwater discharges that enter Arizona surface waters or a Municipal Separate Storm Sewer System (MS4) leading to Arizona surface waters, and are associated with:

  • Construction activities that disturb 1 or more of acres of land
  • Construction activities that will disturb less than 1 acre but are part of a larger common plan of development or sale that will ultimately disturb 1 acre or more
  • Support activities from temporary plants or operations set up to produce concrete, asphalt or other materials exclusively for the permitted construction project

The 2020 CGP replaces ADEQ’s 2013 CGP in accordance with the following schedule:

  • 2020 CGP issued March 27, 2020
  • 2020 CGP effective on July 1, 2020
  • Existing permittees (those who have coverage under the 2013 permit) have between July 1, 2020, and Aug. 31, 2020, to submit a Notice of Intent (NOI) using myDEQ

A Stormwater Pollution Prevention Plan (SWPPP) must be developed by the time the NOI is submitted. Existing permittees are encouraged to update their current SWPPP to comply with the 2020 CGP requirements, rather than developing a new SWPPP Learn More >

Prior to July 1, 2020, the following process applies:

  • Existing permittees must continue to comply with their coverage under 2013 CGP (e.g., monitoring, reporting, inspections, etc.).
  • New and unpermitted construction sites that are subject to construction general permitting must apply under the 2013 CGP for stormwater discharges, as required by the Clean Water Act, and federal and state law.

2020 CGP and Fact Sheet

Permit | View/Download >
Fact Sheet | View/Download >
2020 Administrative Record and Response to Comments | View/Download >

The 2013 CGP expires on June 30, 2020. The 2013 CGP is replaced with the 2020 CGP that is effective as of July 1, 2020.

View 2013 CGP and reference materials | View >

    How to submit Notice of Intent (NOI) for coverage under CGP:

    To obtain, modify or terminate a CGP NOI, you will need to use myDEQ | Learn More > 

    A SWPPP is required to be completed prior to submitting an NOI | Learn More >


    Annual fees are based on the number of acres being disturbed during the construction project: 

    • Less than 1acre disturbed | $250 *
    • – 50 acres disturbed | $350 * 
    • Greater than 50 acres disturbed | $500 *

    $1,000 SWPPP first time review fee is required if any of your outfall(s) are within 1/4 mile of impaired, not-attaining, Outstanding Arizona Waters. $500 SWPPP review fee for when a second review is needed.