The appropriate Particulate Matter (PM) emission factor to use will vary depending on what information is available for your particular process. Our current guidance is as follows:
- If no PM-10 emission factor is available, use the total particulate emission factors to calculate PM-10 emissions.
- If no information regarding PM-2.5 is available, you are not required to calculate a separate PM2.5 emissions value.
- If no information regarding condensable PM (PM-CON) is available, you are not required to calculate a PM-CON emissions value.
Please note that KDHE requests only the filterable and condensable components of particulate matter, which is in turn used to calculate the primary component of particulate matter.
The following are examples of possible PM emissions calculation scenarios. If you need additional assistance with PM emission factors, please contact us.
Example 1
For an uncontrolled industrial boiler firing distillate oil, Table 1.3-6 in AP-42 lists the following PM-filterable emission factors:
- PM-10: 1 pound per 1,000 gallons (gal) fuel
- PM2.5: 0.25 pounds per 1,000 gal fuel
For an uncontrolled industrial boiler firing distillate oil, Table 1.3-2 in AP-42 lists the following PM-CON emission factor: 1.3 pounds per 1000 gal fuel.
In this case, the proper emission factors are:
- PM10-FIL: 1 pounds per 1,000 gal fuel
- PM2.5-FIL: 0.25 pounds per 1,000 gal fuel
- PM-CON: 1.3 pounds per 1000 gal fuel
Example 2
For an uncontrolled natural gas fired boiler, Table 1.4-2 in AP-42 lists the following PM emission factors:
- PM-CON: 5.7 pounds per 106 standard cubic feet (scf) fuel
- PM-filterable: pounds per 106 scf fuel
A footnote states that all PM is assumed to be less than 1 micrometer in diameter, and, therefore, these factors can be used to calculate PM-10 or PM-2.5.
In this case, the proper emission factors are:
- PM10-FIL: 1.9 pounds per 106 scf fuel
- PM2.5-FIL: 1.9 pounds per 106 scf fuel
- PM-CON: 5.7 pounds per 106 scf fuel
Example 3
For an uncontrolled preheated kiln in a cement manufacturing process, Table 11.6-2 in AP-42 lists a filterable total suspended particles (TSP) emission factor of 250 pounds per ton clinker produced. There is no information on PM-10 or PM-2.5 emissions or condensable particulate matter emissions. In this case, the filterable TSP emission factor would be used to calculate PM-10 and no PM-2.5 emissions would be calculated.
In this case, the proper emission factors are:
- PM-10-FIL: 250 pounds per ton of clinker