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Maricopa County Homepage   MARICOPA COUNTY
Air Quality Department, Bob Huhn, PIO
1001 North Central Avenue
Phoenix, AZ  85004
Ph 602-506-6713

Emissions Inventory Public Review Draft Released

PHOENIX, January 22, 2014 – The Maricopa County Air Quality Department (MCAQD) today released its draft 2011 Periodic Emissions Inventory for Ozone Precursors.  The inventory includes emission estimates for volatile organic compounds (VOC), nitrogen oxides (NOx) and carbon monoxide (CO).  Emissions are calculated for both Maricopa County and the eight-hour ozone nonattainment area. Annual totals as well as season-day emissions are provided for all source categories.


The emissions inventory report will now undergo a 30-day public review period. The document is available in electronic format (PDF files) on the department’s website at:


The main body of the report consists of six chapters:

Chapter 1: Introduction                         (overview and summary of all source categories)

Chapter 2: Point sources                       (large manufacturing facilities, power plants, etc.)

Chapter 3: Area sources                        (widespread similar sources, such as fuel combustion, fires, etc.)

Chapter 4: Nonroad mobile sources      (aircraft, locomotives, lawn mowers, tractors, etc.)

Chapter 5: Onroad mobile sources        (cars, trucks, other vehicles, etc.)

Chapter 6: Biogenic sources                  (crops, indigenous vegetation, landscaping, etc.)


MCAQD will hold a public workshop to discuss the draft emissions inventory report on Friday, February 14, 2014.   The workshop will begin at 2:00 PM in the fifth-floor classroom (Suite 560) at the department’s offices at 1001 N. Central Ave. in Phoenix. 


*All visitors to the MCAQD office located at 1001 N. Central Ave. will need to check-in at the reception area in suite 125 and then proceed to the 5th floor classroom.


The department is also accepting written comments on the draft report through the close of business on Friday, February 21, 2014.  Written comments may be submitted (via US mail or email) to:


Maricopa County Air Quality Department

Emissions Inventory Unit

1001 N. Central Ave. Suite 595

Phoenix, AZ 85004






About Maricopa County Air Quality Department


The Maricopa County Air Quality Department is a regulatory agency whose goal is to ensure federal clean air standards are achieved and maintained for the residents and visitors of Maricopa County. The department is governed by the Maricopa County Board of Supervisors and follows air quality standards set forth by the federal Clean Air Act.



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