Boilers

The calculators below and fact sheet on permit requirements are made available as tools to aid the public and are not intended to provide legal advice or replace, supplant, or amend any federal or state regulation. Additionally, any summary of regulatory requirements found on this webpage does not relieve any entity subject to regulation of its legal obligation to fully comply with all applicable statutory and regulatory requirements. Arkansas air permit requirements are evaluated on a facility-wide basis. Additional calculations may be necessary to fully evaluate a facility's permitting requirements. To assure full compliance, each emission source must be evaluated, and if the sum of these emissions exceeds the thresholds noted below, then a permit is required.

Air Emission Calculators

The following calculators can help you determine if you need a permit. The calculator uses emission factors from the:

Environmental Protection Agency's AP 42, Fifth Edition Compilation of Air Pollutant Emission Factors, Volume 1: Stationary Point and Area Sources, Chapter 1 External Combustion Sources.

When calculating, use the highest throughputs possible rather than relying on averages.

Natural Gas-Fired Boiler Air Emission Calculator

When you have entered the Amount of Fuel Burned (with the correct units) and selected any other values that are necessary, select the Calculate Emissions button. Your emissions will be calculated for you.

 million (BTU/hr)

Emissions (tons per year)













Oil-Fired Boiler Air Emission Calculator

When you have entered the Amount of Fuel Burned (with the correct units) and selected any other values that are necessary, select the Calculate Emissions button. Your emissions will be calculated for you.

 weight percent
 weight percent

Emissions (tons/year)













Propane-Fired Boiler Air Emission Calculator

When you have entered the Amount of Fuel Burned (with the correct units), select the Calculate Emissions button. Your emissions will be calculated for you.

Emissions (tons/year)