Emissions Inventories

Current Surveys

If your business or agency uses industrial equipment, please complete the following survey:

AACOG Industrial Equipment Usage Survey

If your business or agency uses construction equipment, please complete the following survey:

AACOG Construction Equipment Usage Survey

If your organization uses both industrial and construction equipment, please complete both surveys.

About the Inventories

AACOG regularly conducts emission inventories to update default information used in forecasting air quality. More information about AACOG’s air quality forecasting can be found on the photochemical modeling page.

The emission inventories quantify nitrogen oxides (NOx) and volatile organic compounds (VOCs) generated by a range of sources in the region. NOx and VOCs combine in sunlight to form ground-level ozone – the primary component of smog. Burning fuels such as gasoline, diesel, and coal generate NOx. VOCs are often released in air through evaporative processes from products such as gasoline, paints, and solvents.

To improve upon default information used in photochemical modeling, AACOG relies on survey responses from local organizations like businesses and government agencies. Information on equipment population, fuel type, and usage is aggregated at the county level and replaces default values with data that reflects the actual equipment used in the AACOG region.