Permitting Guidance

The Permitting Division is responsible for implementing industrial source control programs as specifically required by the federal Clean Air Act (CAA) and Arizona statute. The Permitting Division processes applications for dust-generating activities, open burning, an Authority to Operate (ATO) (under a General permit), Non-Title V permits, and Title V permits as well as asbestos notifications, subcontractor registrations, and vapor recovery decals. Other permit related functions within this division include source impact dispersion modeling; source emissions testing acceptance and oversight; continuous monitoring system performance verification; and permit engineering evaluations of sources. These activities ensure that emission sources are either complying with standards or are on a schedule for compliance by a specific date.

Asbestos >>

The Air Quality department regulates all asbestos renovation and demolition activity within Maricopa County. This covers all demolitions and regulated renovation activities containing friable asbestos-containing material greater than or equal to 160 square feet, 260 linear feet, or 35 cubic feet. This is determined by an Asbestos Hazard Emergency Response Act (AHERA) certified asbestos building inspector prior to demolition or renovation.

AQD Online Portal >>

The following activities can be completed through the AQD Online Portal: asbestos notifications and revisions, new permit applications, permit renewals, permit minor/non-minor modifications, and more! 

Air Dispersion Modeling Background Concentrations >>

When performing air dispersion modeling, representative background concentrations must be added to each pollutant source modeled. Background concentrations are intended to account for other pollution sources not explicitly included in the modeling, such as natural sources and other non-modeled or unidentified sources of air pollution.

Best Available Control Technology >>

The federal Clean Air Act and Maricopa County Air Pollution Control Regulations Rule 241 require the use of Best Available Control Technology for sources that are either new sources or modifications to existing sources of air pollution that exceed certain thresholds.

Dust and Miscellaneous Portal >>

The following activities can be completed through the Dust and Miscellaneous Portal: subcontractor registrations, dust control permit applications, tanker truck certifications, open burn applications, block permit applications, invoice payments, and more!

Dust Sources, Control, and Training >>

Information on dust sources, dust control measures, and dust control training classes.  

Emission Reduction Credit Program >>

The Emission Reduction Credit (ERC) program creates a consistent method for sources to generate ERCs for future use in offsetting emissions in nonattainment areas throughout Maricopa County.

General Permit Information >>

The General Permit program offers an alternative to regular permits and simplifies the process for authorizing operation of qualified sources. 

Non-Title V Permit Information >>

The Air Quality Department's Non-Title V (NTV) Permitting program issues permits for sources such as gasoline plants, heating units, internal combustion engines, and surface coating operations that are below the Title V emission thresholds and that are not considered exempt or insignificant under Rule 200. The permits include conditions that regulate source-specific emission limits, monitoring, operational requirements, record keeping, and reporting.

Performance Testing >>

Performance tests are conducted according to established procedures in order to quantify emissions and provide an objective means for determining compliance with established emission limits. 

Permit Engineering >>

Learn more about air quality permits and view our Planning Area Maps. 

Permit Intake Office >>

View our permit intake office address, hours of operation, and public parking information.

Permits, Forms, and Payments >>

Find more information about our online permitting portals and available applications for download. 

Permitting and Enforcement Reports >>

View reports containing weekly permit applications received, monthly permits issued, enforcement summary reports, active orders of abatement and more. 

Subcontractor Registrations >>

A subcontractor who engages in dust-generating operations at a site that requires a dust control permit, and is not the permit holder for that site, must have a valid subcontractor registration. 

Tanker Truck Certifications >>

According to the Maricopa County Air Pollution Control Regulations Rule 352,  all gasoline delivery vessels must be designed and maintained to be vapor tight and leak free. To comply with this requirement, a gasoline delivery vessel must pass the Maricopa County Pressure Test before delivering or unloading gasoline and must pass the test each year thereafter. 

Title V Permit Information >>

Title V is a federal program designed to standardize air quality permits and the permitting process for major sources of emissions across the country.

Page reviewed 28 November 2023