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The end of the page provides links you can use for more detailed information and instructions on entering required information related to each of these topics.

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• An indication of the calculation methodology used to estimate quantities of CO₂ for this unit (Carbon mass balance method or Site-specific emission factor method)
• A unique name or identifier, plus optional description for this process unit
• The type of process unit
• The name and type of each input and output associated with the process unit (Note: This requirement applies only if carbon mass balance method is used to estimate CO₂ process emissions for the unit. If you have a process input or output other than CO₂ in the exhaust gas that contains carbon that is not included in Equations Q-1 through Q-7 Q–1 through Q–7 of this section, you must account for the carbon and mass rate of that process input or output in your calculations according to the procedures in §98.174(b)(5). See also the exception in 98.174(b)(4).)

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For each coke pushing operation at your facility, the following information is required:

• Wiki MarkupThe annual CO{~}₂{~} process emissions (in metric tons) \ [See 98.176(c)]

For each flare at your facility, the following information is required:

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required:

• The annual CO{~}2~ ₂ emissions from flare unit operations (the output of Equation Y-1a, Y-1b, Y-2, or Y-3 depending on the calculation method used for this flare, in metric tons) \ [98.256(e)(4)]unmigrated-wiki-markup
• The annual CH{~}₄{~} emissions from flare unit operations (the output of Equation C-9a, in metric tons) \ [98.33\(c)(2) as required by 98.172(b)]unmigrated-wiki-markup
• The annual N{~}₂{~}O emissions from flare unit operations (the output of Equation C-9a, in metric tons) \ [98.33\(c)(2) as required by 98.172(b)]

For each flare using the Equation Y-1a calculation method, Subpart Q requires you to enter the following supplemental emissions information:

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information:

• An indication of whether daily or weekly measurement periods are used \ [98.256(e)(6)]unmigrated-wiki-markup
• The annual volume of flare gas combusted (in scf) \ [98.256(e)(6)]unmigrated-wiki-markup
• The specific consensus-based standard method number or description of the procedure specified by the flow meter manufacturer \ [98.256(q)]
• The number of days during the reporting year missing data procedures were used to determine the volume of flare gas combustedunmigrated-wiki-markup
• The annual average molecular weight (in kg/kg-mole) \ [98.256(e)(6)] Wiki Markup
• The method used to measure molecular weight \ [98.256(q)]
  • Method 18 at 50 CFR part 60, appendix A-6
  • ASTM D1945-03
  • ASTM D1946-90 (Reapproved 2006)
  • GPA 2261-00
  • UOP539-97
  • ASTM D2503-92 (Reapproved 2007)
  • Chromatographic analysis: manufacturer's instructions
• The number of days during the reporting year missing data procedures were used to determine molecular weight
• Wiki MarkupThe annual average carbon content of the flare gas (kg carbon/kg flare gas) \ [98.256(e)(6)]unmigrated-wiki-markup
• The method used to measure carbon content \ [98.256(q)]
  • Method 18 at 50 CFR part 60, appendix A-6
  • ASTM D1945-03
  • ASTM D1946-90 (Reapproved 2006)
  • GPA 2261-00
  • UOP539-97
  • ASTM D2503-92 (Reapproved 2007)
  • Chromatographic analysis: manufacturer's instructions
• The number of days during the reporting year missing data procedures were used to determine carbon content

For each flare using the Equation Y-1b calculation method, Subpart Q requires you to enter the following supplemental emissions information:

• Wiki MarkupAn indication of whether daily or weekly measurement periods are used \ [98.256(e)(7)]
• Wiki MarkupThe annual volume of flare gas combusted (in scf) \ [98.256(e)(7)]unmigrated-wiki-markup
• The specific consensus-based standard method number or description of the procedure specified by the flow meter manufacturer \ [98.256(q)]
• The number of days during the reporting year missing data procedures were used to determine the volume of flare gas combusted
• Wiki MarkupThe annual average CO{~}2~ ₂ concentration (in percent by volume or mole) \ [98.256(e)(7)] Wiki Markup
• The method used to measure CO{~}2~ concentration \₂ concentration [98.256(q)]
  • Method 18 at 50 CFR part 60, appendix A-6
  • ASTM D1945-03
  • ASTM D1946-90 (Reapproved 2006)
  • GPA 2261-00
  • UOP539-97
  • ASTM D2503-92 (Reapproved 2007)
  • Chromatographic analysis: manufacturer's instructions
• The number of days during the reporting year missing data procedures were used to determine CO₂ concentration
• For each carbon containing compound other than CO₂ in the flare gas stream identified by the facility, and for each flare using the Equation Y-1b, the system shall require the facility to identify:unmigrated-wiki-markup
• The annual average concentration of the compound (in percent by volume or mole) \ [98.256(e)(7)\(i)] Wiki Markup
• The method used to measure concentration of the compound \ [98.256(q)]
  • Method 18 at 50 CFR part 60, appendix A-6
  • ASTM D1945-03
  • ASTM D1946-90 (Reapproved 2006)
  • GPA 2261-00
  • UOP539-97
  • ASTM D2503-92 (Reapproved 2007)
  • Chromatographic analysis: manufacturer's instructions
• The number of days during the reporting year missing data procedures were used to determine the concentration of the compound

For each flare using the Equation Y-2 calculation method, Subpart Q requires you to enter the following supplemental emissions information:

• Wiki MarkupAn indication of whether daily or weekly measurement periods are used \ [98.256(e)(8)]unmigrated-wiki-markup
• The annual volume of flare gas combusted (in MMscf) \ [98.256(e)(8)]
• Wiki MarkupThe specific consensus-based standard method number or description of the procedure specified by the flow meter manufacturer \ [98.256(q)]
• The number of days during the reporting year missing data procedures were used to determine the volume of flare gas combusted
• Wiki MarkupThe annual average higher heating value of the flare gas (MMBtu/MMscf) \ [98.256(e)(8)]unmigrated-wiki-markup
• The method used to measure higher heating value of the flare gas \ [98.256(q)]
  • ASTM D4809-06
  • ASTM D240-02 (Reapproved 2007)
  • ASTM D1826-94 (Reapproved 2003)
  • ASTM D3588-98 (Reapproved 2003)
  • ASTM D4891-89 (Reapproved 2006)
  • Chromatographic analysis: manufacturer's instructions
• The number of days during the reporting year missing data procedures were used to determine the higher heating value of the flare gas
• Wiki MarkupAn indication of whether the annual volume of flare gas combusted was determined using standard conditions of 68 ºF and 14.7 psia or 60 ºF and 14.7 psia \ [98.256(e)(8)]unmigrated-wiki-markup
• An indication of whether the annual average higher heating value of the flare gas was determined using standard conditions of 68 ºF and 14.7 psia or 60 ºF and 14.7 psia \ [98.256(e)(8)]

For each flare using the Equation Y-3 calculation method, Subpart Q requires you to enter the following supplemental emissions information:

• Wiki MarkupThe total number of start-up, shutdown, or malfunction (SSM) events exceeding 500,000 scf/day \ [98.256(e)(9)]

Subpart Q Validation Report

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See Also

Screen Errors
Using Cal e-GGRT to Prepare Your Subpart Q Report
Subpart Q Process Unit Information for Units NOT Monitored by CEMS
Subpart Q Process Unit Information for Units Monitored by CEMS
Subpart Q Coke Pushing Operations Information
Subpart Q Flares Information
Subpart Q Emissions Information for Units NOT Monitored by CEMS
Subpart Q Emissions Information for Units Monitored by CEMS
Subpart Q Emissions Information for Coke Pushing Operations
Subpart Q Emissions Information for Flares
Subpart Validation Report