AQD Online Portal

Accessing the AQD Online Portal

STEP 1: Review the video or the PDF guide below for creating your SCS electronic signature through the Environmental Protection Agencies Shared CROMERR Services (SCS) electronic reporting site. Skip to Step 2 if you already have an existing SCS electronic signature.

If your organization/company has never had a permit with the Maricopa County Air Quality Department (MCAQD), or if your organization/company has recently changed ownership, please complete and submit the Shared CROMERR Services (SCS) Electronic Signature Registration Form before attempting to create your SCS electronic signature. Do not fill out this form if your organization/company already has a current permit with MCAQD. 

Individual consultants and performance testing companies must register themselves as an organization/company before beginning the process of creating a SCS electronic signature.

STEP 2: Login to your electronic signature account to access the AQD Online Portal. 

STEP 3: Access applicable guidance documents from resource links below to navigate through the portal.  

General, Non-Title V, and Title V Resources

Virtual Inspection Resources

Asbestos NESHAP Notifications Resources

Emissions Inventory Resources

Performance Testing Resources


Troubleshooting EPA-SCS

Contact Us

To contact the department, call 602-506-7833 or email You can also submit an online support ticket

Page reviewed 20 May 2021