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Adding or Updating Coke Calcining Unit Information

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To delete an existing Coke Calcining Unit, click on the delete icon, which is the last column in the COKE CALCINING UNIT-LEVEL EMISSIONS SUMMARY table.

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Subpart Y requires you to report the following data about your coke calcining unit:

• A unique name or identifier, plus optional description for this coke calcining unit. See also About Unique Unit Names
• For each unit, answer the following question: "Do “Do you operate and maintain a Continuous Emissions Monitoring System (CEMS) that measures CO₂ emissions according to subpart C? This means you have both a flow meter and a concentration monitor installed. If so, you must use the CEMS methodology. Click either Yes or No.

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If you selected Yes for using a CEMS, Subpart Y collects the maximum rated throughput of the coke calcining unit (metric tons coke calcined per stream day)

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If you select No for using a CEMS,

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The following provides a step-by-step description of how to enter Subpart Y Coke Calcining emissions information.

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To add or update CO₂ emissions information for a coke calcining unit that is monitored by CEMS, please refer to the Subpart Y Emissions Information for Process Units Monitored by CEMS help page (CH₄ and N₂O emissions information for coke calcining units that are monitored by CEMS are reported separately per the instructions below).

To add or update CO₂, CH₄, and N₂O emissions information for a coke calcining unit that is NOT monitored by CEMS OR CH₄ and N₂O emissions information for a coke calcining unit that is monitored by CEMS, locate the COKE CALCINING UNIT-LEVEL EMISSION SUMMARY table on the Subpart Y Overview page, and click OPEN.

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Step 1. CO₂ Emissions: Equation Y-13 Summary and Result (for Units NOT Monitored by CEMS)

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The annual CO₂ emissions from coke calcining operations is required. To calculate this value download the spreadsheet by clicking the link titled "Use “Use Y-13 spreadsheet to calculate." ” Fill in the spreadsheet using the instructions in the spreadsheet. After completing each respective spreadsheet, copy the value of CO₂ calculated by the spreadsheet to this page in the box next to "Annual “Annual CO₂ emission from this coke calcining unit (metric tons)."”

The Equation Y-13 Summary is presented on the page. You can hover over an element in the equation to reveal a definition of that element.

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Step 2a: Equation Y-9/Y-10 Summary and Result

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The annual CH₄ and N₂O emissions from coke calcining operations are required. To calculate these values download the appropriate spreadsheet by clicking the link titled "Use “Use Y-9 spreadsheet to calculate" calculate” for CH₄ or "Use “Use Y-10 spreadsheet to calculate" calculate” for N₂O. Fill in the spreadsheet using the instructions in the spreadsheet. After completing each respective spreadsheet, copy the value of CH₄ and N₂O calculated by the spreadsheet to this page in the box next to "Annual “Annual CH₄ emission from this coke calcining unit (metric tons)" ” or "Annual “Annual N₂O emission from this coke calcining unit (metric tons)," ” as appropriate.

The Equation Y-9/Y-10 Summaries are presented on the page. You can hover over an element in the equation to reveal a definition of that element.

Step 2b: Unit-specific Measurement Result

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The annual CH₄ and N₂O emissions from coke calcining operations are required. Enter the value of CH₄ and N₂O in this page in the box next to "Annual “Annual CH₄ emission from this coke calcining unit (metric tons)" ” or "Annual “Annual N₂O emission from this coke calcining unit (metric tons)," ” as appropriate.

Step 2c: Unit-specific Emission Factor Based on a Source Test Result

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The annual CH₄ and N₂O emissions from coke calcining operations are required. Enter the value of CH₄ and N₂O in this page in the box next to "Annual “Annual CH₄ emission from this coke calcining unit (metric tons)" ” or "Annual “Annual N₂O emission from this coke calcining unit (metric tons)," ” as appropriate.

Both CH₄ and N₂O emissions include the basis for the emission factor:

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