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Subpart C Configuration-Level Emissions Information for RY2014 and Later
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This section of the reporting instructions specifies the requirements for reporting emissions information that is aggregated at the configuration level for RY2014 and later. Configuration-level emissions will include the emissions from all fuels combusted in a given configuration. Users are required to report both configuration-level and fuel-specific information for all configuration types. As with the identification information, each configuration has unique reporting requirements for emissions information.

The text below describes how to enter subpart C General Stationary Fuel Combustion Sources configuration-level emissions information. The process to edit an existing configuration type is essentially similar.

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Starting on the Subpart C Overview page, find the configuration type for which you would like to enter emissions information in the CONFIGURATION SUMMARY table and click OPEN. This action will open the Configuration Summary page.

To edit a specific configuration, click the “Edit this Configuration Information" link above the CONFIGURATION-LEVEL EMISSIONS INFORMATION table.

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Use the text boxes and drop-down menus in the Edit Configuration Information page to update the entered information.

When finished, click SAVE.

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To enter emissions information for this configuration, find the configuration in the CONFIGURATION-LEVEL EMISSIONS INFORMATION table and click on the OPEN button.

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 The data entry screen will vary depending on the configuration type.

Configuration Types 1, 3 and 4

Note: Configuration Type 1 pictured.

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For configurations of Type 1 (single unit using Tiers 1, 2, or 3), subpart C requires the following additional configuration-level information:

  • The total annual biogenic CO2 mass emissions. This includes both CO2 emissions from the combustion of biomass fuels and the biogenic portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(b)(8)(ii)]
  • The total annual CO2 mass emissions from sorbent [98.36(b)(10)]

For configurations of Type 3 (aggregation of units), subpart C requires the following additional configuration-level information:

  • The total annual biogenic CO2 mass emissions. This includes both CO2 emissions from the combustion of biomass fuels and the biogenic portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(c)(1)(vi)]
  • The total annual CO2 mass emissions from the combustion of fossil fuels. This includes both CO2 emissions from all fossil fuels and the fossil portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(c)(1)(vi)]
  • The total annual CO2 mass emissions from sorbent [98.36(c)(1)(x)]

For configurations of Type 1 (single unit using Tiers 1, 2, or 3) and Type 3 (aggregation of units), subpart C requires to identify whether CO2 emissions are generated from operations using sorbent injection that are not monitored using CEMS by selecting the "Yes" or "No" radio buttons for "Is CO2 emission generated from operations using sorbent injection which are not monitored using CEMS?" If "Yes" is selected, the following information must be reported in the fields provided:

  • The total amount of sorbent used during the reporting year in short tons [98.36(e)(2)(viii)(A)]
  • The molecular weight of the sorbent [98.36(e)(2)(viii)(B)]
  • The ratio "R" in Equation C-11 [98.36(e)(2)(viii)(C)]

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For configurations of Type 1 (single unit using Tiers 1, 2, or 3) and Type 3 (aggregation of units), regardless of Tier or CO2 methodology selected, additional information must be reported at the configuration level if municipal solid waste (MSW) is combusted and ASTM methods D7495-08 and D6866-08 are used to determine the biogenic portion of the annual CO2 emissions, as described in 98.34(d) or if the unit co-fires biogenic fuels (or partly-biogenic fuels) and non-biogenic fuels and ASTM methods D7495-08 and D6866-08 are used to determine the biogenic portion of the annual CO2 emissions, as described in 98.34(e). In the Biogenic CO2 Verification Data section, use the checkboxes to indicate that the biogenic portion of the annual CO2 emissions was determined in accordance with 98.34(d) or 98.34(e), as applicable, and, provide the sample analysis results for each quarter as a decimal fraction. [98.36(e)(2)(x)(A), 98.36(e)(2)(xi)] 

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For configurations of Type 4 (common pipe), subpart C requires the following additional configuration-level information:

  • The total annual biogenic CO2 mass emissions. This includes both CO2 emissions from the combustion of biomass fuels and the biogenic portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(c)(3)(vi)]
  • The total annual CO2 mass emissions from the combustion of fossil fuels. This includes both CO2 emissions from all fossil fuels and the fossil portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(c)(3)(vi)]

Use the text boxes to enter the required information for your configuration type.

For configurations of Type 4 (common pipe), regardless of Tier or CO2 methodology selected, additional information must be reported at the configuration level if the unit co-fires biogenic fuels (or partly-biogenic fuels) and non-biogenic fuels, and ASTM methods D7495-08 and D6866-08 are used to determine the biogenic portion of the annual CO2 emissions, as described in 98.34(e). In the Biogenic CO2 Verification Data section, use the checkboxes to indicate that the biogenic portion of the annual CO2 emissions was determined in accordance with 98.34(e), and, provide the sample analysis results for each quarter as a decimal fraction. [98.36(e)(2)(xi)]

When finished, click SAVE.

Configuration Types 2 and 5

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For configurations of Type 2 (single unit using Tier 4) and Type 5 (monitored common stack or duct configurations), subpart C requires the following additional information aggregated at the configuration level:

  • The quarterly CO2 mass emissions for each quarter during the reporting year. The quarterly value is the sum of hourly emissions for the respective quarter only (for example, for the fourth quarter, the emissions will be summed for the fourth quarter only, not from all four quarters in the year). This includes both biogenic and non-biogenic emissions. This does not include slipstream emissions [98.36(e)(2)(vi)(B)]
  • The total annual biogenic CO2 mass emissions. This includes both CO2 emissions from the combustion of biomass fuels and the biogenic portion of CO2 emissions from fuels with a mixed biogenic and fossil component.  This does not include slipstream emissions [98.36(b)(9)(ii), 98.36(c)(2)(viii)]
  • The total annual non-biogenic CO2 mass emissions (i.e. CO2 mass emissions from fossil fuels, sorbent use, and process emissions).  This does not include slipstream emissions [98.36(b)(9)(ii), 98.36(c)(2)(viii)]
  • The total annual CO2 mass emissions measured by the CEMS. This includes both biogenic and non-biogenic emissions.  This includes slipstream emissions [98.36(b)(9)(1)-(ii), 98.36(c)(2)(viii)]
  • An indication (check box) if emissions reported for the CEMS include emissions calculated according to 98.33(a)(4)(viii) for a slipstream that bypassed the CEMS [98.33(a)(4)(viii)]
  • The total number of source operating hours in the reporting year [98.36(e)(2)(vi)(A)]
  • The total operating hours in which a substitute data value was used in the emissions calculations for the CO2 concentration parameter (if an O2 monitor is used to calculate CO2 concentration, report missing data for the O2 monitor here) [98.36(e)(2)(vi)(C), 98.3(c)(8)]
  • The total operating hours in which a substitute data value was used in the emissions calculations for the stack gas flow rate parameter [98.36(e)(2)(vi)(C), 98.3(c)(8)]
  • The total operating hours in which a substitute data value was used in the emissions calculations for the stack gas moisture content parameter (if moisture correction is required and a continuous moisture monitor is used) [98.36(e)(2)(vi)(C), 98.3(c)(8)]
  • An indication (check box) of whether biogenic CO2 mass emissions were estimated using the methodology described by Equations C-12, C-13, and C-14 (See section 98.33(e)(2))

If biogenic CO2 emissions were estimated using the methodology described by Equations C-12, C-13, and C-14, the following additional information is required by subpart C for configurations of Type 2:

  • The total annual volume of CO2 emitted from the combustion of all fuels [98.36(e)(2)(ix)(A)]
  • The total annual volume of CO2 emitted from the combustion of all fossil fuels [98.36(e)(2)(ix)(B)]
  • The total annual volume of CO2 emitted from the combustion of all biomass fuels [98.36(e)(2)(ix)(C)]
  • The total annual biogenic CO2 mass emissions calculated using the procedures in 98.33(e)(2) [98.36(e)(2)(ix)(G)]

Use the text boxes and check box to enter the required information for your configuration type.

For configurations of Type 2 (single unit using Tier 4) and Type 5 (monitored common stack or duct configurations), regardless of Tier or CO2 methodology selected, additional information must be reported at the configuration level if municipal solid waste (MSW) is combusted and ASTM methods D7495-08 and D6866-08 are used to determine the biogenic portion of the annual CO2 emissions, as described in 98.34(d), or, if the unit co-fires biogenic fuels (or partly-biogenic fuels) and non-biogenic fuels, and ASTM methods D7495-08 and D6866-08 are used to determine the biogenic portion of the annual CO2 emissions, as described in 98.34(e). In the Biogenic CO2 Verification Data section, use the checkboxes to indicate whether the biogenic portion of the annual CO2 emissions was determined in accordance with 98.34(d) or 98.34(e), and, provide the sample analysis results for each quarter as a decimal fraction. [98.36(e)(2)(x)(A), 98.36(3)(2)(xi)]

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When finished, click SAVE.

Configuration Type 6 (year-round Part 75 heat input reporters)

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For configurations of Type 6 (year-round Part 75 heat input reporters), subpart C requires the following additional information aggregated at the configuration level:

  • The total annual CO2 emissions at the monitored location, as calculated by the applicable part 75 methodology. Include both biogenic and non-biogenic CO2 in this value. [98.36(d)(2)(ii)(F), 98.36(d)(2)(iii)(F]
  • The total annual biogenic CO2 mass emissions. This includes both CO2 emissions from the combustion of biomass fuels and the biogenic portion of CO2 emissions from fuels with a mixed biogenic and fossil component [98.36(d)(2)(ii)(I), 98.36(d)(2)(iii)(I)]
  • If CO2 calculation methodology used was CEMS, the following additional elements are required:
    • The total number of source operating hours in the reporting year that the CO2 concentration parameter was missing (if an O2 monitor is used to calculate CO2 concentration, report missing data for the O2 monitor here) [98.3(c)(8)]
    • The total number of source operating hours in the reporting year that the stack gas flow rate parameter was missing [98.3(c)(8)]
    • The total number of source operating hours in the reporting year that the moisture content parameter was missing (if a continuous monitor is in use) [98.3(c)(8)]
  • If CO2 calculation methodology used was the Appendix D and G (part 75) calculation method, the following additional elements are required:
    • Total number of operating hours during the year that fuel flow rate data was missing [98.3(c)(8)]
    • Total number of operating hours during the year that high heating value data was missing [98.3(c)(8)]

Use the text boxes to enter the required information for your configuration type.

When finished, click SAVE.

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See Also

Screen Errors
Using e-GGRT to Prepare Your Subpart C Report for RY2014 and Later
Subpart C Configurations for RY2014 and Later
Subpart C Configuration-Level Emissions Information for RY2014 and Later
Subpart C Fuel Identification Information for All Reporting Years
Subpart C Fuel-Level Emissions Information for RY2014 and Later
Configuration types, emission details and their presentation in the summary report
Using Subpart C Calculation Spreadsheets
Subpart Validation Report

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