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Emission Estimation Calculators - Booklet 2

These downloadable spreadsheet calculators were designed to assist with estimating the releases of National Pollutant Release Inventory (NPRI) substances from a variety of common operations or processes. The tools are focused on releases to air and are based primarily on default emission factors, however they can be adapted for the use of site-specific emission factors where these exist.

Since NPRI reporting thresholds are for the facility as a whole, the air releases calculated using these tools will need to be combined with releases from other sources and activities at the facility where applicable.

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Diesel Fuel Generator – Hours of Operation

Operation of a generator (reciprocating engine) with diesel fuel combustion (up to 600 horsepower) results in release of Part 1, 2, 4 and 5 Substances.

Download spreadsheet calculator: Diesel Fuel Generator – Hours of Operation [xlsx 48 kb] (23 Feb 2016)

Suggested estimation methodology: Emissions Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = activity Rate
  • EF = emissions factor

Input Data

B = Hours of operation [hours]
C = Operating horsepower [hp]

Calculate the activity rate by the following formula:

A = B x C

Then calculate the emissions for each applicable substance by using the appropriate emissions factors given in the tables below.

Substance Releases

Part 1 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1PartEmission Factor (EF)Footnote2EF Units
Acetaldehyde75-07-01A2.435E-06kg/hp - hour
Acrolein107-08-81A1.469E-07kg/hp - hour
Anthracene120-12-71A5.938E-09kg/hp - hour
Benzene71-43-21A2.962E-06kg/hp - hour
1,3-Butadiene106-99-01A6.207E-08kg/hp - hour
Formaldehyde50-00-01A3.747E-06kg/hp - hour
Naphthalene91-20-31A2.693E-07kg/hp - hour
Propylene115-07-11A8.192E-06kg/hp - hour
Toluene108-88-31A1.299E-06kg/hp - hour
Isomers of Xylene1330-20-71A9.049E-07kg/hp - hour
Mercury7439-97-61B9.570E-10kg/hp - hour
Part 2 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2EF Units
Acenaphthene83-32-92.254E-09kg/hp - hour
Acenaphthylene208-96-88.033E-09kg/hp - hour
Benzo (a) anthracene56-55-35.334E-09kg/hp - hour
Benzo (a) phenanthrene218-01-91.121E-09kg/hp - hour
Benzo (a) pyrene50-32-82.985E-10kg/hp - hour
Benzo (b) fluoranthene205-99-21.573E-10kg/hp - hour
Benzo (g,h,i) perylene191-24-27.763E-10kg/hp - hour
Benzo (k) fluoranthene207-08-92.461E-10kg/hp - hour
Dibenzo (a,h) anthracene53-70-39.256E-10kg/hp - hour
Fluoranthene206-44-02.416E-08kg/hp - hour
Fluorene86-73-79.271E-08kg/hp - hour
Indeno(1,2,3-c,d) pyrene193-39-55.953E-10kg/hp - hour
Phenanthrene85-01-89.335E-08kg/hp - hour
Pyrene129-00-01.518E-08kg/hp - hour
Part 4 Criteria Air Contaminants (CAC) Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2EF Units
Carbon Monoxide (CO)630-08-03.029E-03kg/hp - hour
Sulphur Dioxide (SO2)7446-09-59.294E-04kg/hp - hour
Oxides of Nitrogen (NOx), expressed as nitrogen dioxide (NO2)11104-93-11.405E-02kg/hp - hour
Volatile Organic Compounds (VOCs)Footnote*1.120E-03kg/hp - hour
Total Particulate Matter (TPM)Footnote*9.974E-04kg/hp - hour
Particulate Matter less than or equal to 10 micrometers (µm) (PM10)Footnote*9.974E-04kg/hp - hour
Particulate Matter less than or equal to 2.5 µm (PM2.5)Footnote*9.974E-04kg/hp - hour
Part 5 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2EF Units
Benzene71-43-22.962E-06kg/hp - hour
1,3-Butadiene106-99-06.207E-08kg/hp - hour
Formaldehyde50-00-03.747E-06kg/hp - hour
Propylene115-07-18.192E-06kg/hp - hour
Toluene108-88-31.299E-06kg/hp - hour
Isomers of Xylene1330-20-79.049E-07kg/hp - hour

Note on Emissions Factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

Return to Table of Contents

Diesel Fuel Generator – Fuel Usage

Operation of a generator (reciprocating engine) with diesel fuel combustion (up to 600 horsepower) results in release of Part 1, 2, 4 and 5 Substances.

Download spreadsheet calculator: Diesel Fuel Generator – Fuel Usage [xlsx 45 kb] (23 Feb 2016)

Suggested estimation methodology: Emissions Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = activity Rate
  • EF = emissions factor

Input Data

A = Amount of diesel burned [cubic meters (m3) or Liters (L)]
B = Heating value of natural gas [Giga Joules (GJ)/m3]Footnote*

If the amount of diesel in known in liters you must convert it to cubic meters by the following formula:

A[m3] = A[L]/1000

Finally calculate the emissions for each applicable substance by using the appropriate emissions factors given in the tables below.

Substance Releases

Part 1 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1PartEmission Factor (EF)Footnote2EF Units
Acetaldehyde75-07-01A1.259E-02kg/m3
Acrolein107-08-81A7.593E-04kg/m3
Anthracene120-12-71A3.070E-05kg/m3
Benzene71-43-21A1.532E-02kg/m3
1,3-Butadiene106-99-01A3.209E-04kg/m3
Formaldehyde50-00-01A1.937E-02kg/m3
Naphthalene91-20-31A1.392E-03kg/m3
Propylene115-07-11A4.235E-02kg/m3
Toluene108-88-31A6.714E-03kg/m3
Isomers of Xylene1330-20-71A4.679E-03kg/m3
Mercury7439-97-61B4.948E-06kg/m3
Part 2 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2EF Units
Acenaphthene83-32-91.166E-05kg/m3
Acenaphthylene208-96-84.153E-05kg/m3
Benzo (a) anthracene56-55-32.758E-05kg/m3
Benzo (a) phenanthrene218-01-95.795E-06kg/m3
Benzo (a) pyrene50-32-81.543E-06kg/m3
Benzo (b) fluoranthene205-99-28.134E-07kg/m3
Benzo (g,h,i) perylene191-24-24.014E-06kg/m3
Benzo (k) fluoranthene207-08-91.272E-06kg/m3
Dibenzo (a,h) anthracene53-70-34.785E-06kg/m3
Fluoranthene206-44-01.249E-04kg/m3
Fluorene86-73-74.794E-04kg/m3
Indeno(1,2,3-c,d) pyrene193-39-53.078E-06kg/m3
Phenanthrene85-01-84.826E-04kg/m3
Pyrene129-00-07.847E-05kg/m3
Part 4 Criteria Air Contaminants (CAC) Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote**EF Units
Carbon Monoxide (CO)630-08-00.4084 x Bkg/m3
Sulphur Dioxide (SO2)7446-09-50.1247 x Bkg/m3
Oxides of Nitrogen (NOx), expressed as nitrogen dioxide (NO2)11104-93-11.8960 x Bkg/m3
Volatile Organic Compounds (VOCs)Footnote***0.1548 x Bkg/m3
Total Particulate Matter (TPM)Footnote***0.1333 x Bkg/m3
Particulate Matter less than or equal to 10 micrometers (µm) (PM10)Footnote***0.1333 x Bkg/m3
Particulate Matter less than or equal to 2.5 µm (PM2.5)Footnote***0.1333 x Bkg/m3
Part 5 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote**EF Units
Benzene71-43-24.011E-04 x Bkg/m3
1,3-Butadiene106-99-08.405E-06 x Bkg/m3
Formaldehyde50-00-05.073E-04 x Bkg/m3
Propylene115-07-11.109E-03 x Bkg/m3
Toluene108-88-31.758E-04 x Bkg/m3
Isomers of Xylene1330-20-71.225E-04 x Bkg/m3

Note on Emissions Factors

National Pollutant Release Inventory (NPRI) Basis of Estimate Code = E2 (Published Emission Factors).

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

Return to Table of Contents

Large Stationary Diesel Engine (>600 hp)

Operation of a large stationary diesel engine (greater than 600 horsepower) results in release of Part 1, 2, 4 and 5 Substances from diesel fuel combustion.

Download spreadsheet calculator: Large Stationary Diesel Engine [xlsx 46 kb] (23 Feb 2016)

Suggested estimation methodology: Emissions Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = activity Rate
  • EF = emissions factor

Input Data

A = Amount of diesel burned [cubic meters (m3) or Liters (L)]
B = Heating value of natural gas [Giga Joules (GJ)/m3]Footnote*

C = Sulphur content [%]Footnote**

If the amount of diesel in known in liters you must convert it to cubic meters by the following formula:

A[m3] = A[L]/1000

Finally calculate the emissions for each applicable substance by using the appropriate emissions factors given in the tables below.  To calculate the emissions in tonnes divide the emission in kilograms by 1000.

Substance Releases

Part 1 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote***EF Units
Acetaldehyde75-07-01.083E-05 x Bkg/m3
Anthracene120-12-75.288E-07 x Bkg/m3
Acrolein107-02-83.388E-06 x Bkg/m3
Benzene71-43-23.336E-04 x Bkg/m3
Formaldehyde50-00-03.392E-05 x Bkg/m3
Naphtalene91-20-35.589E-05 x Bkg/m3
Propylene115-07-11.199E-03 x Bkg/m3
Toluene108-88-31.208E-04 x Bkg/m3
Isomers of Xylene1330-20-78.298E-05kg/m3
Part 2 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote***EF Units
Acenaphthene83-32-92.012E-06 x Bkg/m3
Acenaphthylene208-96-83.968E-06 x Bkg/m3
Benzo (a) anthracene56-55-32.674E-07 x Bkg/m3
Benzo (b) fluoranthene205-99-24.772E-07 x Bkg/m3
Benzo (k) fluoranthene207-08-94.686E-08 x Bkg/m3
Benzo (a) pyrene50-32-85.525E-08 x Bkg/m3
Benzo (a) phenanthrene (Chrysene)218-01-96.578E-07 x Bkg/m3
Benzo (g,h,i) perylene191-24-21.195E-07 x Bkg/m3
Dibenzo (a,h) anthracene53-70-37.438E-08 x Bkg/m3
Fluoranthene206-44-01.733E-06 x Bkg/m3
Fluorene86-73-75.503E-06 x Bkg/m3
Indeno(1,2,3-c,d)pyrene193-39-58.899E-08 x Bkg/m3
Phenanthrene85-01-81.754E-05 x Bkg/m3
Pyrene129-00-01.595E-06 x Bkg/m3
Part 4 Criteria Air Contaminants (CAC) Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote***EF Units
Carbon Monoxide (CO)630-08-00.365 x Bkg/m3
Sulphur Dioxide (SO2)7446-09-50.434 x B x Ckg/m3
Oxides of Nitrogen (NOx), expressed as nitrogen dioxide (NO2)11104-93-11.376 x Bkg/m3
Volatile Organic Compounds (VOCs)FootnoteƗ0.035 x Bkg/m3
Total Particulate Matter (TPM)FootnoteƗ0.027 x Bkg/m3
Particulate Matter less than or equal to 10 micrometers (µm) (PM10)FootnoteƗ0.021 x Bkg/m3
Particulate Matter less than or equal to 2.5 µm (PM2.5)FootnoteƗ0.021 x Bkg/m3
Part 5 Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2Footnote***EF Units
Benzene71-43-23.336E-04 x Bkg/m3
Formaldehyde50-00-03.392E-05 x Bkg/m3
Propylene115-07-11.199E-03 x Bkg/m3
Toluene108-88-31.208E-04 x Bkg/m3
Isomers of Xylene1330-20-78.298E-05 x Bkg/m3

Note on Emissions Factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

Return to Table of Contents

Gasoline Generator – Hours of Operation

Operation of a generator (reciprocating engine) with gasoline fuel combustion results in release of Criteria Air Contaminant (Part 4 Substances).

Download spreadsheet calculator: Gasoline Generator - Hours of Operation [xlsx 39 kb] (Feb 24 2016)

Suggested estimation methodology: Emissions Factor

The equation for emissions estimation is:

E = (A x B x EF)/1000

where:

  • E = emissions [tonnes]
  • A = hours of operation [hr]
  • B = operation horsepower [hp]
  • EF = emissions factor [kilograms (kg)/hp-hr]
Part 4 Criteria Air Contaminants (CAC) Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote1Emission Factor (EF)Footnote2EF Units
Carbon Monoxide (CO)630-08-03.157E-03Footnote**kg/hp - hour
Sulphur Dioxide (SO2)7446-09-52.681E-04kg/hp - hour
Oxides of Nitrogen (NOx), expressed as nitrogen dioxide (NO2)11104-93-14.99E-03kg/hp - hour
Total Particulate Matter (TPM)Footnote*3.27E-04kg/hp - hour
Particulate Matter less than or equal to 10 micrometers (µm) (PM10)Footnote*3.27E-04kg/hp - hour
Particulate Matter less than or equal to 2.5 µm (PM2.5)Footnote*3.27E-04kg/hp - hour

Note on Emissions Factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

Return to Table of Contents

Gasoline Generator – Fuel Usage

Operation of a generator (reciprocating engine) with gasoline fuel combustion results in release of Criteria Air Contaminant (Part 4 Substances).

Download spreadsheet calculator: Gasoline Generator – Fuel Usage [xlsx 42 kb] (24 Feb 2016)

Suggested estimation methodology: Emissions Factor

The general equation for emissions estimation is:

E = A x EF

where:

  • E = emissions
  • A = Activity Rate
  • EF = emissions factor

Input Data

A = Volume of gasoline burned [cubic meters]
B = Heating value of gasoline [Giga Joules per cubic meter]Footnote*

Part 4 Criteria Air Contaminants (CAC) Releases
Substance NameChemical Abstracts Service Registry Number (CAS RN)Footnote 1Emission Factor (EF)Footnote2EF Units
Carbon Monoxide (CO)Footnote**630-08-00.426x BFootnote Ɨkilograms (kg)/cubic meters (m3)
Sulphur Dioxide (SO2)Footnote**7446-09-50.0361 x Bkg/m3
Oxides of Nitrogen (NOx), expressed as nitrogen dioxide (NO2)Footnote**11104-93-10.7007 x Bkg/m3
Total Particulate Matter (TPM)Footnote**Footnote***0.04299 x Bkg/m3
Particulate Matter less than or equal to 10 micrometers (µm) (PM10)Footnote**Footnote***0.04299 x Bkg/m3
Particulate Matter less than or equal to 2.5 µm (PM2.5)Footnote**Footnote***0.04299 x Bkg/m3

Note on Emissions Factors

The default emission factors are used in the table above, however if you have a site specific emission factor you would prefer to use you may enter it in the emission factor column. If you choose to insert your own emission factor ensure that the units have been converted accordingly. 

The emission factors used in this spreadsheet are based on uncontrolled emissions. If you are using an emission control device you will have to adjust the emissions calculated by this spreadsheet according to the following formula:

Controlled Emissions = Uncontrolled emission x ((100 - control efficiency)/100)

Return to Table of Contents

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