New Mexico
Environment Department

Contact Information:
(505) 827-2855 MAIN // 1-800-219-6157 (toll free)
Environmental Emergencies:
505-827-9329 (24 hrs)

Air Quality Bureau

Emission Inventory

The Emission Inventory Section collects and examines amounts of emissions from various sources in New Mexico to facilitate planning and modeling of these emissions.

Submitting Emission Inventory to New Mexico

Here is information about submitting your emission inventory to New Mexico.

Retrieving Emission Inventory Information

Here is information about retrieving emission inventory data.

Emission Inventory Contact

Here is information about who to contact about emission inventory questions.

What is an Emission Inventory?


The United States Environmental Protection Agency (EPA) requires states to report information regarding emissions of criteria pollutants, their precursors, and hazardous air pollutants. Emissions inventories are critical to efforts of the state, local, and federal agencies to attain and maintain the National Ambient Air Quality Standards (NAAQS) established by EPA.

Criteria pollutants include carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), lead (Pb), and particulate matter. Particulate matter includes both particulate matter 2.5 microns in diameter or less (PM2.5) and particulate matter ten microns in diameter or less (PM10). Volatile organic compounds (VOC) are precursor emissions to ozone. Precursor emissions for PM2.5 are SO2, VOC, NO2, and ammonia (NH3).

The New Mexico Environment Department (NMED) Air Quality Bureau (AQB) is required to conduct statewide emission inventories of criteria and hazardous air pollutants under 20.2.73 New Mexico Administrative Code (NMAC) Notice of Intent and Emissions Inventory Requirements.

The NMED AQB does not have jurisdiction over facilities in Bernalillo County or on Tribal lands; consequently, they are not included in the NMED AQB inventory. The NMED AQB submits the emission inventory electronically to EPA based on a schedule promulgated by EPA and contained in the Consolidated Emission Reporting Regulation (CERR). The EPA hosts the national emissions inventories where you can query specific regions, states and pollutants. The 2014 National Emissions Inventory data can be queried here.

Types of Emission Inventory Sources

  1. Point: large, stationary (non-mobile), identifiable source of emissions that release pollutants to the atmosphere.
  2. Area: collectively represent point sources that have not been inventoried as a specific point, mobile, or biogenic source. They are typically sources which are too small, numerous, or difficult to inventory individually.
  3. Mobile: motor vehicle, non-road engine, or non-road vehicle.

Motor vehicle: self propelled, used to carry people or property on a street or highway;

Non-road engine: internal combustion engine (including fuel system) that is not used in a motor vehicle, a vehicle used only for competition, or affected by sections 111 or 202 of the Clean Air Act (CAA); and

Non-road vehicle: vehicle that is run by a non-road engine and does not meet the qualities above.

4. Biogenic: all pollutants emitted from non-anthropogenic sources, for example: trees, vegetation, oil and gas seeps, and microbial activity.

Types of Information Included in an Emission Inventory

  1. Facility name, mailing address, physical location, and contact information;
  2. Actual emissions by pollutant including criteria pollutants, precursor pollutants, hazardous air pollutants (HAPs), and New Mexico toxic air pollutants (TAPs);
  3. Actual operational status, hours per year, and percent throughput by quarter;
  4. Emission unit stack parameters; and
  5. Annual process or fuel combustion rates and fuel characteristics.

Purposes of Conducting an Emission Inventory

The NMED AQB conducts emission inventories in order to comply with state and federal regulations. The emission inventory is used to develop planning tools, conduct air dispersion modeling, and establish baseline dates used in determination of increment consumption for the Prevention of Significant Deterioration (PSD) program. It is used to measure progress in reducing emissions and to provide input for air quality management projects, such as regional haze and non-attainment areas. The emission inventory is also used to track air quality trends, provide data for the air quality report, and correlate area, industry, and source growth to pollution.