Directions:

For Emergency Generators/Engines - this calculator does not calculate emissions from non-emergency (prime) engines. If you have non-emergency engines please contact your reviewing authority

Facility Profile*

Total Boiler Heat Input - 100 (MMBtu/hr)

Fuels Used

Natural Gas- Y (Y or N)

LPG N (Y or N) Sulfur %

Liquid Fuel (distillate, diesel, etc.) N (Y or N) 0.0015 Default = 0.0015

Total Small Boilers and Heaters 

Input - 20 (MMBtu/hr

Fuels Used

Natural Gas Y (Y or N)

LPG N (Y or N) Sulfur %

Liquid Fuel (distiallate, diesel, etc.) N (Y or N) 0.0015 Defalut = 0.0015

Emergency Generator/Engines - 1000 (hp)

Fuels Used Sulfur %

Diesel- Y (Y or N) 0.0015 Default = 0.0015

Gasoline Y (Y or N)

Natural Gas/LPG Y (Y or N)

For Total Auxiliary Heat Input - only add together the heat input of those boilers and heaters that are rated at less than 10.0 MMBtu/hr, unless in a severe or extreme ozone nonattainment area. Include all units less 

than 2.0 MMBtu/hr in severe or extreme ozone nonattainment areas.

Total of boilers 10.0 MMBtu/hr and greater, unless in severe or extreme ozone nonattainment area then 

include 2.0 MMBtu/hr and greater

Total of boilers less than 10.0 MMBtu/hr, unless in severe or extreme ozone nonattainment area then less 

than 2.0 MMBtu/hr

Enter the facility's information below. 

Write the letter "Y" or "N" next to each fuel type to indicate that the facility does or does not burn that type of fuel. 

Potential To Emit Calculator for Boilers

7/2/2014

This spreadsheet helps estimate a facility's potential to emit. It is provided for the convenience of the permitted community. Emission factor sources are subject to revision or correction. It is the permittee's responsibility to determine their emissions. The permittee should 

consult with the reviewing authority to determine the appropriateness of this calculator for its source. 

For Total Boiler Heat Input - only add together the heat input of those units that are rated at least 10.0 MMBtu/hr or larger, unless in a severe or extreme ozone nonattainment area. Include all units 2.0 MMBtu/hr and 

greater in severe or extreme ozone nonattainment areas.

Page 1 of 1
PTE (ton/yr)

Process PM PM10 PM2.5 SO2 NOX CO VOC CO2 Single HAP Combined HAP

Boilers 3.62 3.85 3.72 0.3 5.09 36.96 2.42 52570.38 0.03 0.03

Auxiliary Heaters 0.65 0.65 0.65 0.05 8.59 7.21 0.47 10305.88 0.01 0.01

Engine/Generator 0.18 0.18 0.18 0.15 6.00 8.00 5.12 287.50 0.30 0.95

Total PTE 4.45 4.69 4.55 0.49 19.68 52.18 8.02 63163.76 0.33 0.99

7/2/2014

Potential To Emit Calculator for Boilers

Page 1 of 1
Emissions from Boilers and Auxiliary Heaters - Criteria Pollutants

100 Heat Input (MMBtu/hr)

Worst Case PTE (ton/yr) PM PM10 PM2.5 SO2

3.62 3.85 3.72 0.30

Fuel Type: Natural Gas Used: Y

PM PM10

2 PM2.5 SO2

Emission Factor1 (lb/MMSCF) 7.6 7.6 7.6 0.6

PTE (ton/yr) 3.62 3.85 3.72 0.30

Note:

1. Emission factors are from AP-42, Chapter 1.4, Tables 1.4-1 and 1.4-2 (updated 07/98).

2. Assumed PM and PM2.5 emissions are equal to PM10 emissions.

3. If in extreme or severe ozone nonattainment, NOx emission factor reflects NOx limit in general permit

4. CO2 is calculated at Natural Gas @ 8270 hr/yr and backup diesel at 500 hr/yr, all others are NG @8760 plus backup 

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 MMSCF/1,020 MMBtu x EF (lb/MMSCF) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: LPG Used: N Sulfur Content:

PM PM10

2 PM2.5 SO2

Emission Factor1 (lbs/kgal) 0.7 0.7 0.7 0

PTE (ton/yr) 0.00 0.00 0.00 0.00

Note:

1. Emission factors are from AP-42, Chapter 1.5, Tables 1.5 (updated 07/08).

2. Assumed PM and PM2.5 emissions are equal to PM10 emissions.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/91.5 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: Liquid Fuel Used: N Sulfur Content:

PM2

PM10 PM2.5 SO2

Emission Factor1 (lb/kgal) 2.0 3.3 2.55 0.213

Potential To Emit Calculator for Boilers

7/2/2014

Page 1 of 6
PTE (ton/yr) 0.00 0.00 0.00 0.00

Note:

1. Emission factors are from AP-42, Chapter 1.3, Tables 1.3-1, 1.3-2, and 1.3-3 for Fuel Oil Combustion (updated 05/10

2. Assume PM emissions are equal to PM10 emissions

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/140 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: Emergency Backup Diesel Used: Y Sulfur Content:

PM2

PM10 PM2.5 SO2

Emission Factor1 (lb/kgal) 2.0 3.3 2.55 0.213

PTE (ton/yr) 0.36 0.59 0.46 0.04

Note:

1. Emission factors are from AP-42, Chapter 1.3, Tables 1.3-1, 1.3-2, and 1.3-3 for Fuel Oil Combustion (updated 05/10

2. Assume PM emissions are equal to PM10 emissions.

3. Results are already added to Natural Gas PTE.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/140 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Page 2 of 6
Purple values are pulled from other worksheet

Blue values are results

NOX CO VOC CO2 Single HAP

5.09 36.96 2.42 52570.38 0.03

NOX CO VOC CO2 Single HAP

11.22 84 5.5 120000 0.075

5.09 36.96 2.42 52570.38 0.03

x limit in general permit

 all others are NG @8760 plus backup diesel at 500 hr/yr.

) x 8760 hr/yr x 1 ton/2000 lb

0.00 %

NOX CO VOC CO2 Single HAP

1.034 7.5 1.0 12500 0.075

0.00 0.00 0.00 0.00 0.00

hr/yr x 1 ton/2000 lb

0.002 %

NOX CO VOC CO2 Single HAP

1.507 5.0 0.34 22300 0.033

Pollutant

Pollutant

Pollutant

alculator for Boilers

Pollutant

Page 3 of 6
0.00 0.00 0.00 0.00 0.00

or Fuel Oil Combustion (updated 05/10).

r/yr x 1 ton/2000 lb

0.002 %

NOX CO VOC CO2 Single HAP

1.507 5.0 0.34 22300 0.00118

0.27 0.89 0.06 3982.14 0.00

or Fuel Oil Combustion (updated 05/10).

r/yr x 1 ton/2000 lb

Pollutant

Page 4 of 6
Combined HAP

0.03

Combined HAP

0.083

0.03

Combined HAP

0.083

0.00

Combined HAP

0.0405

Page 5 of 6
0.00

Combined HAP

0.0038

0.00

Page 6 of 6
Emissions from Emergency Generator/Engine - Criteria Pollutants

Engine Size: 1000 hp

Diesel Used: Y

Worst Case PTE (ton/yr) PM PM10 PM2.5 SO2

0.18 0.18 0.18 0.15

Engine Type: Diesel Engine (<= 600 hp) Used: N

PM2

PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 2.20E-03 2.20E-03 2.20E-03 2.05E-03

PTE (ton/yr) 0.00 0.00 0.00 0.00

Note:

1. Emission factors are from Chapter 3.3, Table 3.3-1 (updated 10/96).

2. Assume PM and PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

4. Assume 500 hours/yr of operation for an emergency engine.

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Engine Type: Diesel (> 600 hp) Used: Y Sulfur Content:

PM PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 0.0007 0.0007 0.0007 1.21E-05

Limited PTE (ton/yr) 0.18 0.18 0.18 0.00

Note:

1. Emission factors are from Chapter 3.4, Tables 3.4-1 and 3.4-2 for Large Stationary Diesel and Dual Fuel Engines (up

2. Assume PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

4. Assume 500 hours/yr of operation for an emergency engine

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Engine Type: Gasoline Used: Y

Pollutant

Potential To Emit Calculator for Boile

4/2/2014

Page 1 of 6
PM2

PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 7.21E-04 7.21E-04 7.21E-04 5.91E-04

PTE (ton/yr) 0.18 0.18 0.18 0.15

Note:

1. Emission factors are from Chapter 3.3, Table 3.3-1 (updated 10/96).

2. Assume PM and PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

4. Assume 500 hours/yr of operation for an emergency engine.

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Engine Type: Natural Gas/LPG Used: Y

PM2

PM10 PM2.5

2 SO2

Emission Factor1 (lbs/hp-hr) 1.67E-04 1.67E-04 1.67E-04 5.06E-06

PTE (ton/yr) 0.04 0.04 0.04 0.00

Note:

1. Emission factors are from Chapter 3.3, Table 3.3-1 (updated 10/96).

2. Assume PM and PM2.5 emissions are equal to PM10 emissions.

3. Assume TOC (total organic compounds) emissions equal to VOC emissions.

4. Assume 500 hours/yr of operation for an emergency engine.

Methodology

PTE (ton/yr) = Engine Capacity (hp) x EF (lb/hp-hr) x 8760 hr x 1 ton/2000 lb

Page 2 of 6
Purple values are pulled from other worksheet

Blue values are results

NOX CO VOC CO2 Single HAP

6.00 8.00 5.12 287.50 0.30

NOX CO VOC3

CO2 Single Hap

3.10E-02 6.68E-03 2.47E-03 1.15 0.00118

0.00 0.00 0.00 0.00 0.00

0.00 %

NOX CO VOC3

CO2 Single HAP

0.024 5.50E-03 7.05E-04 1.15 0.00118

6.00 1.38 0.18 287.50 0.30

esel and Dual Fuel Engines (updated 10/96).

Pollutant

culator for Boilers

Pollutant

Pollutant

Page 3 of 6
NOX CO VOC3

CO2 Single Hap

0.011 6.96E-03 2.05E-02 1.08E+00 1.18E-03

2.75 1.74 5.12 270.00 0.30

NOX CO VOC3CO2 Single HAP

1.90E-02 3.20E-02 2.55E-04 0.946 0.00045408

4.75 8.00 0.06 236.50 0.11

Pollutant

Page 4 of 6
Combined HAP

0.95

Combined HAP

0.0038

0.00

Combined HAP

0.0038

0.95

Page 5 of 6
Combined HAP

3.80E-03

0.95

Combined HAP

0.0006192

0.15

Page 6 of 6
Emissions from Auxiliary Heaters - Criteria Pollutants

20 Heat Input (MMBtu/hr)

Worst Case PTE (ton/yr) PM PM10 PM2.5

0.65 0.65 0.65

Fuel Type: Natural Gas Used: Y

PM PM10

2 PM2.5

Emission Factor1 (lb/MMSCF) 7.6 7.6 7.6

PTE (ton/yr) 0.65 0.65 0.65

Note:

1. Emission factors are from AP-42, Chapter 1.4, Tables 1.4-1 and 1.4-2 (updated 07/98).

2. Assumed PM and PM2.5 emissions are equal to PM10 emissions.

3. If in extreme or severe ozone nonattainment, NOx emission factor reflects NOx limit in general permit.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 MMSCF/1,020 MMBtu x EF (lb/MMSCF) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: LPG Used: N Sulfur Content:

PM PM10

2 PM2.5

Emission Factor1 (lbs/kgal) 0.7 0.7 0.7

PTE (ton/yr) 0.00 0.00 0.00

Note:

1. Emission factors are from AP-42, Chapter 1.5, Tables 1.5 (updated 07/08).

2. Assumed PM and PM2.5 emissions are equal to PM10 emissions.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/91.5 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb

Fuel Type: Liquid Fuel Used: N Sulfur Content:

PM2

PM10 PM2.5

Emission Factor1 (lb/kgal) 2.0 3.3 2.55

PTE (ton/yr) 0.00 0.00 0.00

Potential To Emit Calculator for Boilers

7/2/2014
Note:

1. Emission factors are from AP-42, Chapter 1.3, Tables 1.3-1, 1.3-2, and 1.3-3 for Fuel Oil Combustion (updated 05/10).

2. Assume PM emissions are equal to PM10 emissions.

Methodology

PTE (ton/yr) = Heat Input (MMBtu/hr) x 1 kgal/140 MMBtu x EF (lb/kgal) x 8760 hr/yr x 1 ton/2000 lb
Purple values are pulled from other worksheet

Blue values are results

SO2 NOX CO VOC CO2 Single HAP Combined HAP

0.05 8.59 7.21 0.47 10305.88 0.01 0.01

SO2 NOX CO VOC CO2 Single HAP Combined HAP

0.6 100 84 5.5 120000 0.075 0.083

0.05 8.59 7.21 0.47 10305.88 0.01 0.01

x limit in general permit.

) x 8760 hr/yr x 1 ton/2000 lb

ulfur Content: 0.00 %

SO2 NOX CO VOC CO2 Single HAP Combined HAP

0 13 7.5 1.0 12500 0.075 0.083

0.00 0.00 0.00 0.00 0.00 0.00 0.00

hr/yr x 1 ton/2000 lb

ulfur Content: 0.0015 %

SO2 NOX CO VOC CO2 Single HAP Combined HAP

0.213 20 5.0 0.34 22300 0.033 0.04035

0.00 0.00 0.00 0.00 0.00 0.00 0.00

Pollutant

it Calculator for Boilers

Pollutant

Pollutant

Pollutant
for Fuel Oil Combustion (updated 05/10).

r/yr x 1 ton/2000 lb