Air Quality Division

Emissions Inventories | SLEIS

An emissions inventory is an accounting of all air pollutant emissions released into the atmosphere. This accounting forms the basis for air quality planning that occurs at county, state, and national levels. Emissions inventories are completed when creating state implementation plans (SIPs).

Facility Emission Inventory Reporting

Pursuant to Arizona Administrative Code (AAC)1any source subject to a permit requirement must also complete and submit an annual Emissions Inventory Questionnaire to ADEQ. ADEQ requires that the annual inventory questionnaire contains the actual quantity of emissions from permitted emission points and fugitive emissions as provided in the permit. ADEQ assesses fees based on the actual emissions submitted in the emissions inventory for sources under ADEQ jurisdiction.2



For the 2019 reporting year, forms are due June 1, 2020.

If you did not operate at all in 2019, complete the Non-Operational Form | Download >

Major/Title V Sources

  • Major sources are required to report emissions using the State & Local Emissions Inventory System (SLEIS) | View >

Minor/Non-Title V Sources

Crushing & Screening, Concrete Batch and Hot-Mix Asphalt General Permits
Annual emissions inventory for ADEQ general permits in the rock products industry (crushing & screening, concrete batch and hot-mix asphalt) is calculated by ADEQ from compliance certification data submitted through myDEQ. The emissions inventory notification letters will contain your calculated emission totals if you have submitted the appropriate compliance certifications.

If you didn’t receive a pre-calculated emissions inventory from ADEQ, you are required to complete and submit the following minor source reporting form:

  • Minor Sources: Reporting Form (.xls) | Download >
  • Alternative PDF form for Minor Sources | Download >

* When using the PDF form, you need only to report your operational data (i.e., activity levels, throughputs, hours of operation, etc.). ADEQ will use this information to compute your emission totals. ADEQ will contact you if additional information is needed.

Emissions Inventory Training

Help Videos


ADEQ will be holding air quality workshops throughout the state. The list will be updated as new workshops are scheduled | View Workshops List >

2019 Workshop Presentation | View/Download > 
2020 Workshop Presentation | Watch Video >

Emission Factors

This document provides a list of the emission factors used in ADEQ’s annual emission inventory questionnaire. These emission factors can also be used to manually calculate emission totals | Download >