Subpart AA Emissions Information for Units NOT Monitored CEMS
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To select a fuel combusted by this unit for which to enter emissions information, find the fuel in the FUEL EMISSIONS INFORMATION table and click OPEN.

For each fuel type (including biomass fuel(s)) for which you have elected to use a Tier 1 (Equation C-1, C-1a, or C-1b) methodology, you are required to report the following information by fuel type:

  • Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-1, Equation C-1a, or Equation C-1b in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-8, Equation C-8a, or Equation C-8b in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-8, Equation C-8a, or Equation C-8b in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]

For each fuel type (including biomass fuel(s)) for which you have elected to use the Tier 2 (Equation C-2a) methodology, you are required to report the following information by fuel type:

  • Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-2a in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-9a in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-9a in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    Identification of each month for which HHVs were calculated using one or more substitute data values \[98.36(e)(2)(ii)(C)\]
  • Wiki Markup
    The frequency of the HHV determinations \[98.36(e)(2)(ii)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Once per fuel lot
    • Upon addition of oil to the storage tank
    • Other (specify)

For each fuel type (including biomass fuel(s)) for which you have elected to use the Tier 2 (Equation C-2c) methodology, you are required to report the following information by fuel type:

  • Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-2c in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-9b in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-9b in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]

For each fuel type (including biomass fuel(s)) for which you have elected to use a Tier 3 (Equation C-3, C-4, or C-5) methodology, you are required to report the following information by fuel type:

  • Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-3 for solid fuels, Equation C-4 for liquid fuels, or Equation C-5 for gaseous fuels in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-8 in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-8 in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table C-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  • Wiki Markup
    The total number of valid carbon content determinations \[98.36(e)(2)(iv)(D)\]
  • Wiki Markup
    The total number of carbon content substitute data values \[98.36(e)(2)(iv)(E)\]
  • Wiki Markup
    The frequency of carbon content determinations \[98.36(e)(2)(iv)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Once per fuel lot
    • Upon addition of oil to the storage tank
    • Other (specify)
  • Wiki Markup
    The total number of operating hours in the reporting year for which missing data substitution was used for fuel usage \[98.3(c)(8)\]

For each gaseous fuel at each configuration for which you have elected to use the Tier 3 (Equation C-5) methodology, you are also required to report the following additional information:

  • Wiki Markup
    Total number of valid molecular weight determinations \[98.36(e)(2)(iv)(D)\]
  • Wiki Markup
    Total number of molecular weight substitute data values \[98.36(e)(2)(iv)(E)\]
  • Wiki Markup
    Frequency of molecular weight determinations \[98.36(e)(2)(iv)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Other (specify)

Use the red-bordered text boxes to enter the required emissions information.

To calculate the emissions you have the option of using your own resources or alternatively you may use the following tool and set of instructions:

  • Download the spreadsheet tool by clicking the link below one of the red-bordered text boxes labeled "Use Tier X spreadsheet to calculate"
  • Fill in the spreadsheet completely using the instructions provided in the tool
  • After completing the spreadsheet, copy the values calculated by the spreadsheet to the red-bordered text boxes on this page

When you have finished entering emission results for the unit, click SAVE.

Repeat this step until emissions information has been entered for each fuel combusted by the unit.

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Excerpt Include
calhelp: Subpart C Fuel-Level Emissions Information
calhelp: Subpart C Fuel-Level Emissions Information
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Step 6: Save Your Data

When you have finished entering emission results and substitute data, click SAVE.

After you save the data on this page, the next time you open the page, the calculator on the top of the page will display the CO2, CH4, and N2O process emissions, rounded to the nearest metric ton. The value displayed is for informational purposes only.

When CO2, CH4 and N2O process emissions have been entered the Status column on the Unit and Furnace Summary will show "Complete" and the background color for that furnace will show as green.

Adding or Updating Emissions for unit type Pulp Mill Lime Kiln

To add or update Subpart AA emissions for unit type Pulp Mill Lime Kiln, find the kiln for which you would like to enter emissions information in the UNIT AND FURNACE SUMMARY table on the Subpart AA Overview page, and click OPEN.

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Step 1: Identify Fuels Combusted by this Unit
To add a fuel combusted by this unit, click the link titled "ADD a Fuel" below the FUEL EMISSIONS INFORMATION table.
To edit a fuel, click on the edit icon or the Name/ID link, which is the first column in the FUEL EMISSIONS INFORMATION table.
To delete a fuel, click on the delete icon, which is the last column in the FUEL EMISSIONS INFORMATION table.
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On the Add Fuel screen, select a fuel combusted by this unit.
When finished, click SAVE
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For each fuel combusted by the unit, Subpart AA requires the following fuel information
  • Calculation methodology start date and end date, for each fuel type
  • Calculation methodology used for the emissions calculation period specified, for each fuel type: 
    • Tier 1/Equation C-1: Annual fuel combusted, default heating value, and default CO2 emission factor
    • Tier 1/Equation C-1a: Annual natural gas usage from billing records (therms) and default CO2 emission factor
    • Tier 1/Equation C-1b: Annual natural gas usage from billing records (mmBtu) and default CO2 emission factor
    • Tier 2/Equation C-2a: Annual fuel combusted, measured heating value, and default CO2 emission factor
    • Tier 2/Equation C-2c: Steam generation, ratio of maximum rated heat input capacity to design rated steam output capacity, and default CO2 emission factor (for MSW and solid fuels listed in Table C-1))
    • Tier 3/Equation C-3: Annual mass of solid fuel combusted and average carbon content of the solid fuel
    • Tier 3/Equation C-4: Annual mass of liquid fuel combusted and average carbon content of the liquid fuel
    • Tier 3/Equation C-5: Annual volume of gaseous fuel combusted, average carbon content of the gaseous fuel, and average molecular weight of the gaseous fuel
When you have entered the required information, click SAVE
Repeat this step until all fuels combusted by this unit have been added and identified.
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Step 2: Enter Required Emissions Information for Each Fuel
To select a fuel combusted by this unit for which to enter emissions information, find the fuel in the FUEL EMISSIONS INFORMATION table and click OPEN.
 Excerpt Include
calhelp: Subpart C Fuel-Level Emissions Information
calhelp: Subpart C Fuel-Level Emissions Information
nopaneltrue
Step 6: Save Your Data
When you have finished entering emission results and substitute data, click SAVE.
After you save the data on this page, the next time you open the page, the calculator on the top of the page will display the CO2, CH4, and N2O process emissions, rounded to the nearest metric ton. The value displayed is for informational purposes only.
When CO2, CH4 and N2O process emissions have been entered the Status column on the Unit and Furnace Summary will show "Complete" and the background color for that furnace will show as green.
Adding or Updating Emissions for unit type Pulp Mill Lime Kiln
To add or update Subpart AA emissions for unit type Pulp Mill Lime Kiln, find the kiln for which you would like to enter emissions information in the UNIT AND FURNACE SUMMARY table on the Subpart AA Overview page, and click OPEN.
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Step 1: Identify Fuels Combusted by this Unit
To add a fuel combusted by this unit, click the link titled "ADD a Fuel" below the FUEL EMISSIONS INFORMATION table.
To edit a fuel, click on the edit icon or the Name/ID link, which is the first column in the FUEL EMISSIONS INFORMATION table.
To delete a fuel, click on the delete icon, which is the last column in the FUEL EMISSIONS INFORMATION table.
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On the Add Fuel screen, select a fuel combusted by this unit.
When finished, click SAVE
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For each fuel combusted by the unit, Subpart AA requires the following fuel information
  • Calculation methodology start date and end date, for each fuel type
  • Calculation methodology used for the emissions calculation period specified, for each fuel type: 
    • Tier 1/Equation C-1: Annual fuel combusted, default heating value, and default CO2 emission factor
    • Tier 1/Equation C-1a: Annual natural gas usage from billing records (therms) and default CO2 emission factor
    • Tier 1/Equation C-1b: Annual natural gas usage from billing records (mmBtu) and default CO2 emission factor
    • Tier 2/Equation C-2a: Annual fuel combusted, measured heating value, and default CO2 emission factor
    • Tier 2/Equation C-2c: Steam generation, ratio of maximum rated heat input capacity to design rated steam output capacity, and default CO2 emission factor (for MSW and solid fuels listed in Table C-1))
    • Tier 3/Equation C-3: Annual mass of solid fuel combusted and average carbon content of the solid fuel
    • Tier 3/Equation C-4: Annual mass of liquid fuel combusted and average carbon content of the liquid fuel
    • Tier 3/Equation C-5: Annual volume of gaseous fuel combusted, average carbon content of the gaseous fuel, and average molecular weight of the gaseous fuel
When you have entered the required information, click SAVE
Repeat this step until all fuels combusted by this unit have been added and identified.
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Step 2: Enter Required Emissions Information for Each Fuel
To select a fuel combusted by this unit for which to enter emissions information, find the fuel in the FUEL EMISSIONS INFORMATION table and click OPEN.
For each fuel type (not including biomass fuel(s)) for which you have elected to use a Tier 1 (Equation C-1, C-1a, or C-1b) methodology, you are required to report the following information by fuel type:
  •  Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-1, Equation C-1a, or Equation C-1b in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  •  Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-8, Equation C-8a, or Equation C-8b in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-8, Equation C-8a, or Equation C-8b in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
For each fuel type (not including biomass fuel(s)) for which you have elected to use the Tier 2 (Equation C-2a) methodology, you are required to report the following information by fuel type:
  •  Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-2a in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  •  Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-9a in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-9a in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    Identification of each month for which HHVs were calculated using one or more substitute data values \[98.36(e)(2)(ii)(C)\]
  •  Wiki Markup
    The frequency of the HHV determinations \[98.36(e)(2)(ii)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Once per fuel lot
    • Upon addition of oil to the storage tank
    • Other (specify)
For each fuel type (not including biomass fuel(s)) for which you have elected to use the Tier 2 (Equation C-2c) methodology, you are required to report the following information by fuel type:
  •  Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-2c in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  •  Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-9b in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-9b in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
For each fuel type (not including biomass fuel(s)) for which you have elected to use a Tier 3 (Equation C-3, C-4, or C-5) methodology, you are required to report the following information by fuel type:
  •  Wiki Markup
    The total annual CO{~}2~ mass emissions derived from Equation C-3 for solid fuels, Equation C-4 for liquid fuels, or Equation C-5 for gaseous fuels in metric tons CO{~}2~ \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii)\]
  •  Wiki Markup
    The total annual CH{~}4~ mass emissions derived from Equation C-8 in metric tons CH{~}4~ and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    The total annual N{~}2{~}O mass emissions derived from Equation C-8 in metric tons N{~}2{~}O and in metric tons CO{~}2{~}e (for Table AA-2 fuels only) \[98.36(b)(8)\(i), 98.36(c)(1)(vi), 98.36(c)(3)(vii), 98.273\(c)(2)]
  •  Wiki Markup
    The total number of valid carbon content determinations \[98.36(e)(2)(iv)(D)\]
  •  Wiki Markup
    The total number of carbon content substitute data values \[98.36(e)(2)(iv)(E)\]
  •  Wiki Markup
    The frequency of carbon content determinations \[98.36(e)(2)(iv)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Once per fuel lot
    • Upon addition of oil to the storage tank
    • Other (specify)
  •  Wiki Markup
    The total number of operating hours in the reporting year for which missing data substitution was used for fuel usage \[98.3(c)(8)\]
For each gaseous fuel at each configuration for which you have elected to use the Tier 3 (Equation C-5) methodology, you are also required to report the following additional information:
  •  Wiki Markup
    Total number of valid molecular weight determinations \[98.36(e)(2)(iv)(D)\]
  •  Wiki Markup
    Total number of molecular weight substitute data values \[98.36(e)(2)(iv)(E)\]
  •  Wiki Markup
    Frequency of molecular weight determinations \[98.36(e)(2)(iv)(B)\]
    • Hourly
    • Daily
    • Weekly
    • Monthly
    • Semiannually
    • Quarterly
    • Other (specify)
Use the red-bordered text boxes to enter the required emissions information.
To calculate the emissions you have the option of using your own resources or alternatively you may use the following tool and set of instructions:
  • Download the spreadsheet tool by clicking the link below one of the red-bordered text boxes labeled "Use Tier X spreadsheet to calculate"
  • Fill in the spreadsheet completely using the instructions provided in the tool
  • After completing the spreadsheet, copy the values calculated by the spreadsheet to the red-bordered text boxes on this page
When you have finished entering emission results for the unit, click SAVE.
...
Step 3: Save Your Data
Once you have entered emissions information for all fuels combusted by the unit, click Subpart AA Overview
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