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Please enjoy our newsletter.
We look forward to working with you!
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The Maricopa County Air Quality Department (MCAQD) Business Assistance Unit offers a full range of services intended to help your business or facility achieve compliance with your air quality permit. These services include:
- Air quality training and education for your staff
- Permit questions and guidance
- Record templates (available on our Resources page)
- Help navigating the AQD Online Portal
- And much more…
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Courtesy Site Visits
We’re here to help! Courtesy site visits are great opportunities for facility staff to learn more about their air quality permits and the requirements that affect their operations. To request a courtesy site visit, simply fill out a quick online form and someone from the Business Assistance Unit will contact you to set up a time for a visit. You may also reach the Business Assistance Unit at 602-506-5102 or at AQBusinessAssistance@Maricopa.gov.
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General Permits
The following general permits have or will expire in 2026:
If you are currently operating under the Dry Cleaning or Stationary Emergency Internal Combustion Engines general permit and have not yet renewed, please renew your permit as soon as possible. Permit renewals are completed through the AQD Online Portal. Please follow this step-by-step guide when completing your renewal application.
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Changes to Your General Permit
The Stationary Emergency Internal Combustion Engines general permit has been updated to allow for more qualifying facilities by increasing allowable NOx emissions to 24.9 tons per year, as well as increasing the allowable size and capacity of external combustion units (e.g. heaters, boilers) and stationary emergency engines. Additionally, the permit now allows for up to 50 hours of non-emergency use per calendar year to mitigate local transmission and/or distribution limitations.
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Shared CROMERR Services (SCS) IMPACT User Accounts
SCS IMPACT user accounts are assigned to individuals and are not meant for sharing. Single accounts accessed by multiple users, or “office accounts”, are not available. Companies may instead register multiple users, each with their own individual account. Please refer to these instructions for creating SCS Impact user accounts.
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MCAQD has prepared the 2023 community greenhouse gas (GHG) emissions inventory to give city, town, Native Nation, and county leaders an understanding of the carbon footprint of their communities. By understanding the sources of greenhouse gas emissions, leaders can make operational decisions and implement voluntary programs to reduce greenhouse gas emissions within their communities. Businesses and individuals can also make personal choices to reduce their carbon footprint, leading to savings through reduced fuel, water, and/or electricity costs.
This non-regulatory emissions inventory was prepared based on data that is publicly available, and other information that was provided voluntarily by industries that generate GHG emissions. The final report shows that mobile sources and electricity use are the primary sources of GHG emissions from residents, visitors, and businesses in Maricopa County. Below is the total Maricopa County 2023 Community GHG Emissions Profile. (Click image to enlarge.)
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Maricopa County residents can replace their gasoline powered lawn mower and/or gasoline powered handheld lawn and garden device and receive a $200 voucher towards the cost of a new electric or battery powered lawn mower and/or a $75 voucher towards the cost of a handheld lawn and garden device. A maximum $275 in vouchers is available every three years.
Government agencies and businesses operating in Maricopa County can replace up to five gasoline powered handheld lawn and garden devices per year and receive a $300 voucher for each working gasoline handheld device turned in at a participating drop-off location. A maximum of five devices per business totaling $1,500 in vouchers is available every year.
After recycling gasoline powered equipment, participants must use their voucher at a participating Home Depot store.
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Idling vehicles are harmful to the environment because they emit pollutants such as carbon monoxide, nitrogen oxide, and volatile organic compounds into the air. Harmful pollutants emitted from idling can cause respiratory problems, allergies, and other health issues. Children, elderly people, and those with pre-existing health conditions are especially vulnerable.
How You Can Help
- Turn off your engine while waiting in drive-thru lines, curbside pickup, school pickup, or when your vehicle is stopped for longer than 10 seconds (not including traffic).
- Carpool, walk, bike, or use public transportation.
- Enable your vehicle's auto stop/start feature if the technology is available.
Additional resources for businesses and local governments to assist with developing idle-free plans are available. Visit Maricopa.gov/5928 and request our free promotional toolkit that includes a press release, social media graphics, informational flyers, and more.
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Stay Informed
Download the Clean Air App to receive real-time information about air quality in Maricopa County and to find out when there is a High Pollution Advisory. Best of all, it’s free!
 
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As Maricopa County residents prepare for the upcoming spring and summer months, MCAQD would like to bring awareness to the dust caused by the improper removal of weeds. Higher concentrations of dust in the air that we breathe can be a nuisance and present health risks to the community. MCAQD encourages property owners to take necessary steps to ensure weed removal activities do not contribute to air pollution.
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Memorial Day
Monday,
May 25, 2026
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Independence Day
Friday,
July 3, 2026
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Labor Day
Monday,
September 7, 2026
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