This topic provides a step-by-step description of how to enter Subpart Y Asphalt Blowing unit information about this facility
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To add or update Subpart Y Asphalt Blowing Information for this Facility, locate the ASPHALT BLOWING UNIT-LEVEL EMISSIONS SUMMARY table on the Subpart Y Overview page.
Click the link titled "ADD an Asphalt Blowing Unit."
To edit an existing Asphalt Blowing Unit, click on the edit icon or the Name/ID link, which is the first column in the ASPHALT BLOWING UNIT-LEVEL EMISSIONS SUMMARY table.
To delete an existing Asphalt Blowing Unit, click on the delete icon, which is the last column in the ASPHALT BLOWING UNIT-LEVEL EMISSIONS SUMMARY table.
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Subpart Y requires you to report the following data about your asphalt blowing operations: - A unique name or identifier, plus optional description for this asphalt blowing unit. See also About Unique Unit Names.
- Specify the control device used to reduce methane (and other organic) emissions from the unit. Select from Vapor scrubber, Thermal oxidizer, Flare, Other (specify), or None.
When you are finished, click SAVE. If you selected Thermal oxidizer, Flare, or Other, an additional question will appear requiring you to select a CO2 AND CH4 EMISSIONS CALCULATION METHOD. The system requires you to select the method used to calculate the CO2 and CH4 emissions for your asphalt blowing operations from the following list: - Equations Y-14 and Y-15 (appears only if Other was selected)
- Equations Y-16a and Y-17
- Equations Y-16b and Y-17.
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When you are finished, click SAVE.
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Note: if you selected Vapor scrubber or None as the asphalt blowing operations control device, you must use Equations Y-14 and Y-15, so no options are provided |
This page provides a step-by-step description of how to enter Subpart Y Asphalt Blowing emissions information.
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To add or update emissions for your asphalt blowing unit, locate the ASPHALT BLOWING UNIT-LEVEL EMISSION SUMMARY table on the Subpart Y Overview page, and click OPEN.
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For asphalt blowing operations, you must calculate CO2 and CH4 emissions.
The emissions entry screen presented will be dependent on the type of control device selected and, if necessary, the calculation method selected.
If Equation Y-14 and Y-15 is required or chosen, then you will be prompted with the Equation Y-14/Y-15 Summary and Result page.
If Equation Y-16a is chosen then you will be prompted with the Equation Y-16a/Y-17 Summary and Result page.
If Equation Y-16b is chosen then you will be prompted with the Equation Y-16b/Y-17 Summary and Result page.
Data entry instructions for each of these pages follow:
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The annual CO2 and CH4 emissions from asphalt blowing operations are required. To calculate this value download the appropriate spreadsheet by clicking the link titled "Use Y-14 spreadsheet to calculate" for CO2 or "Use Y-15 spreadsheet to calculate" for CH4. Fill in the spreadsheet using the instructions in the spreadsheet. After completing each respective spreadsheet, copy the values of CO2 and CH4 calculated by the spreadsheet to this page in the box next to "Annual CO2 emissions from asphalt blowing (metric tons)" or "Annual CH4 emissions from asphalt blowing (metric tons)," as appropriate.
The Equation Y-14/Y-15 Summaries are presented on the page. You can hover over an element in the equation to reveal a definition of that element.
Both the CO2 and CH4 emission factors require a basis:
- Used default emission factor
- Weekly or more frequent measurements
- Periodic (less frequent than weekly) measurements
- Average of multiple source tests
- One-time source test
- Other (specify)
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Note: If using the process vent method for an asphalt blowing unit, enter your CO2 and CH4 emissions on this page. For the entries regarding the emissions factor basis used, choose "Other" and add "Process Vent Method" to the text box that appears. |
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The annual CO2 and CH4 emissions from asphalt blowing operations are required. To calculate this value download the appropriate spreadsheet by clicking the link titled "Use Y-16a spreadsheet to calculate" for CO2 or "Use Y-17 spreadsheet to calculate" for CH4. Fill in the spreadsheet using the instructions in the spreadsheet. After completing each respective spreadsheet, copy the values of CO2 and CH4 calculated by the spreadsheet to this page in the box next to "Annual CO2 emissions from asphalt blowing (metric tons)" or "Annual CH4 emissions from asphalt blowing (metric tons)," as appropriate.
The Equation Y-16a/Y-17 Summaries are presented on the page. You can hover over an element in the equation to reveal a definition of that element.
Both the CO2 and CH4 emission factors require a basis:
- Used default emission factor
- Weekly or more frequent measurements
- Periodic (less frequent than weekly) measurements
- Average of multiple source tests
- One-time source test
- Other (specify)
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Note: If using the process vent method for an asphalt blowing unit, enter your CO2 and CH4 emissions on this page. For the entries regarding the emissions factor basis used, choose "Other" and add "Process Vent Method" to the text box that appears. |
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The annual CO2 and CH4 emissions from asphalt blowing operations required. To calculate this value download the appropriate spreadsheet by clicking the link titled "Use Y-16b spreadsheet to calculate" for CO2 or "Use Y-17 spreadsheet to calculate" for CH4. Fill in the spreadsheet using the instructions in the spreadsheet. After completing each respective spreadsheet, copy the value of CO2 and CH4 calculated by the spreadsheet to this page in the box next to "Annual CO2 emissions from asphalt blowing (metric tons)" or "Annual CH4 emissions from asphalt blowing (metric tons)," as appropriate.
The Equation Y-16b/Y-17 Summaries are presented on the page. You can hover over an element in the equation to reveal a definition of that element.
Both the CO2 and CH4 emission factors require a basis:
- Used default emission factor
- Weekly or more frequent measurements
- Periodic (less frequent than weekly) measurements
- Average of multiple source tests
- One-time source test
- Other (specify)
Note |
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Note: If using the process vent method for an asphalt blowing unit, enter your CO2 and CH4 emissions on this page. For the entries regarding the emissions factor basis used, choose "Other" and add "Process Vent Method" to the text box that appears. |
When you have finished entering Asphalt Blowing Operations Emissions Summary and Result, click SAVE.
After you save the data on this page, the next time you open the page, the calculators on the top of the page will display the CO2 and CH4 emissions, rounded to the nearest metric ton. The value displayed is for informational purposes only.
#Back to Top
Screen Errors
Using Cal e-GGRT to Prepare Your Subpart Y Report
Subpart Y Summary Information for this Facility
Subpart Y Delayed Coking Unit Information
Subpart Y Asphalt Blowing Unit Information
Subpart Y Coke Calcining Unit Information
Subpart Y Catalytic Cracking, Fluid Coking, and Catalytic Reforming Unit Information
Subpart Y Flares Unit Information
Subpart Y Process Vents Unit Information
Subpart Y Sulfur Recovery Plant Information
Subpart Y Emissions Information for Process Units Monitored by CEMS
Subpart Validation Report