Using Cal e-GGRT to Prepare Your Subpart S Report
Note: The Cal e-GGRT help system includes general instruction on using the California GHG reporting tool. However, the help system may not explain differences between California and U.S. EPA reporting requirements. Please refer to the ARB reporting website for California-specific reporting requirements and additional help.

This help page does NOT apply to lime manufacturing facilities that use CEMS to calculate emissions. If you are reporting for a facility that uses CEMS to calculate emissions, click this link to access help content for Reporting Forms. If you are reporting for a facility that does NOT use CEMS to calculate emissions, please continue on using these instructions.

This page provides an overview of subtopics that are central to Subpart S (non-CEMS) reporting. This information is entered from the Cal e-GGRT Subpart S Overview web form shown below. Each topic represents a key web form where you need to enter information.

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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Subpart S Calculation Methodology

The first time you access the Subpart S reporting space on Cal e-GGRT for a facility, you will be asked to select the methodology used to calculate emissions from the following options:

  • Emissions NOT calculated using CEMS
  • Emissions calculated using CEMS

Once you have selected a methodology, click START and Cal e-GGRT will direct you to the appropriate reporting page.

Reporters that select "Emissions calculated using CEMS" are required to enter emissions information directly into Cal e-GGRT and report all other required information using two Excel-based Reporting Forms. Click this link to access Reporting Form Instructions.

Reporters that select "Emissions NOT calculated using CEMS" should continue on using these instructions.

Subpart S Summary Facility and Emissions Information-Emissions NOT Calculated using CEMS

Subpart S requires you to report the following data about your facility:

  • The total annual CO2 process emissions from all kilns combined (metric tons)

For assistance in calculating CO2 process emissions from all kilns, msut download calculation spreadsheets for this subpart by clicking the link located below the red emissions data entry box titled "Use Subpart S equation spreadsheets to calculate,” then following the provided instructions. When you have completed the spreadsheets, they must be saved and uploaded to Cal e-GGRT using the BROWSE and UPLOAD buttons.

Subpart S also requires you to report the following:

  • The annual lime production capacity of your entire facility (metric tons)
  • An indication of whether CO2 was used on-site (i.e. for use in a purification process)
  • If CO2 was used on-site, Subpart S also requires you to report the following information:
    • The annual amount of CO2 captured for use in the on-site process (metric tons)
    • The method used to determine the amount of CO2 captured

Subpart S Lime Product Information

For each lime product produced at your facility, Subpart S requires you to provide:

  • A unique name for the product
  • The lime product type, selected from the following:
    • High calcium lime
    • Dolomitic lime
    • Magnesian lime
    • Other (specify)

For each lime product produced in your facility, Subpart S requires you to report the following data:

  • The beginning and end-of-year inventories for each lime product produced (tons)

For each month in the reporting year, Subpart S requires you to provide the following:

  • The method used to determine the quantity of lime product produced and an indication of whether the quantity is based on substitute data values
  • The method used to determine the quantity of lime product sold
  • The standard method used (American Society for Testing and Materials or National Lime Association testing method) to determine the CaO content of each lime product produced and an indication of whether the CaO content is based on substitute data values (If the National Lime Association testing method was used, the name of the specific method must also be reported)
  • The standard method used (American Society for Testing and Materials or National Lime Association testing method) to determine the MgO content of each lime product produced and an indication of whether the MgO content is based on substitute data values (If the National Lime Association testing method was used, the name of the specific method must also be reported)

Subpart S Calcined-lime Byproduct or Waste Information

For each calcined-lime byproduct or waste generated by your facility, Subpart S requires you to provide:

  • A unique name for the product
  • An indication of whether the calcined-lime byproduct or waste was sold during the reporting year

For each calcined-lime byproduct or waste generated by your facility that is sold, Subpart S requires you to report the following:

  • The beginning and end-of-year inventories for each calcined-lime byproduct or waste sold (tons)
  • For each month in the reporting year, Subpart S requires you to provide the following:
    • The method used to determine the quantity of calcined-lime byproduct or waste sold
    • An indication of whether the quantity sold is based on substitute data values
    • The standard method used (American Society for Testing and Materials or National Lime Association testing method) to determine the CaO content of each calcined-lime byproduct or waste sold
      • If the National Lime Association testing method was used, the name of the specific method must also be reported
    • An indication of whether the CaO content is based on substitute data values
    • The standard method used (American Society for Testing and Materials or National Lime Association testing method) to determine the MgO content of each calcined-lime byproduct or waste sold
      • If the National Lime Association testing method was used, the name of the specific method must also be reported
    • An indication of whether the MgO content is based on substitute data

If there are months where a particular lime product was not produced, choose “Did not operate”. If there are months where you used Best Available Monitoring Methods (BAMM) instead of the ASTM or NLA methods, choose “Other”. Indicate BAMM use here, but add specific BAMM details under Subpart A.

For each calcined-lime byproduct or waste generated by your facility that is NOT sold, Subpart S requires you to report the following data, on an annual basis:

  • An indication of whether the quantity NOT sold is based on substitute data values
  • An indication of whether the CaO content is based on substitute data values
  • An indication of whether the MgO content is based on substitute data values

Subpart S Validation Report

You can use the Validation Report to ensure the completeness and quality of your reporting data.

You should use the Validation Report to check your work. The Validation Report performs two types of checks:

  • Data Completeness: Data that are required for reporting is missing or incomplete.
  • Data Quality: Data are outside of the expected range of values.

You may view the Validation Report at any time.

Note that the Validation Report is intended to assist users in entering data, but it is not an indication that the reporter has entered all necessary information, nor is it an indication that the reporter is in compliance with 40 CFR Part 98. Furthermore a negative finding on the validation report is not a guarantee that a data element was entered incorrectly.

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See Also

Screen Errors
Subpart S Summary Facility and Emissions Information
Subpart S Lime Product Information
Subpart S Calcined-lime Byproduct or Waste Information
Subpart Validation Report
Reporting Form Instructions

Contact Us -- ARB GHG Reporting

This web site is maintained by a contractor to the California Air Resources Board (RY2015.R.03)