AP-42 Permitting and Emissions Inventory

ProMax is well-known for its ability to accurately predict hydrocarbon absorption and emissions from oil and gas facilities. ProMax comes with a variety of tools to facilitate reporting emissions, combining process simulation and environmental reporting in a single software package. Microsoft Excel® connectivity facilitates automation and customizable reporting. See our training section for information on a free specialized course in  Air Emissions.

ProMax is used by several regulatory agencies around the United States to help protect natural resources and promote public health. Contact us today to see if your state’s agency uses our software for their environmental needs!

Estimate Emissions

Estimate emissions for Air Permitting, Emissions Inventory, and more:

  • Potential to Emit (PTE) and Routine Losses
  • Process Emissions
  • Flashing Losses
  • Updated AP-42 Tank Emissions for Fixed and Floating Roof Tanks
  • Working Losses
  • Standing (Breathing) Losses
  • Rim Seal, Deck Fitting, and Deck Seam Losses
  • Loading Losses
  • Generate Emission Factors
  • Validate Sample Compositions


Speciate emissions and report components by contaminant type, including:

  • Volatile Organic Components (VOCs)
  • Hazardous Air Pollutants (HAPs)
  • Greenhouse Gases (GHGs)
  • Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX)
  • Global Warming Potential (GWP)
ProMax VOC Emissions