Lime Manufacturing
United States
Final Rule: Mandatory Reporting of Greenhouse Gases
Under the Mandatory Reporting of Greenhouse Gases (GHGs) rule, owners or operators of facilities that
manufacture lime (as defined below) must report emissions from lime manufacturing processes and all
other source categories located at the facility for which methods are defined in the rule. Owners or
operators are required to collect emission data; calculate GHG emissions; and follow the specified
procedures for quality assurance, missing data, recordkeeping, and reporting.
How Is This Source Category Defined?
The lime manufacturing source category consists of each kiln that produces a lime product from
limestone or dolomite by means of calcination.
What GHGs Must Be Reported?
Lime manufacturing facilities must report the following emissions:
• Carbon dioxide (CO2) process emissions from all lime kilns combined.
• CO2 combustion emissions from lime kilns.
• Nitrous oxide (N2O) and methane (CFL,) emissions from fuel combustion at each kiln. Report
these emissions under 40 CFR part 98, subpart C (General Stationary Fuel Combustion Sources)
using the methodologies in subpart C.
• CO2, N2O, and CFL, emissions from any other stationary combustion units. Report these
emissions under 40 CFR part 98, subpart C (General Stationary Fuel Combustion Sources). The
information sheet on General Stationary Fuel Combustion Sources summarizes the rule
requirements for calculating and reporting emissions from these units.
In addition, each facility must report GHG emissions for any other source categories for which calculation
methods are provided in other subparts of the rule.
How Must GHG Emissions Be Calculated?
Calculate CO2 emissions from kilns by using one of the following methods, as appropriate:
• Kilns with certain types of continuous emission monitoring systems (CEMS) in place must report
using the CEMS and follow the Tier 4 calculation methodology of 40 CFR part 98, subpart C to
report combined CO2 emissions from calcination and fuel combustion.
• For other kilns, the reporter can elect to either:
o Install and operate a CEMS to measure combined process and combustion CO2 emissions
according to the requirements of 40 CFR part 98, subpart C.
o Calculate CO2 process emissions from lime production using the following
measurements:
• A facility-wide emission factor calculated monthly for each lime type from
monthly measurements of the calcium oxide and magnesium oxide content of the
lime and stoichiometric ratios of CO2 to each oxide in the lime.
• An emission factor calculated monthly for each lime byproduct/waste sold (such
as lime kiln dust).
• Annual emissions from unsold lime byproducts/wastes (such as lime kiln dust
and scrubber sludge).
• Mass of each lime type produced on a monthly basis.
40 CFR 98, subpart S 1 EPA-430-F-09-019R
September 2009
-------
• Mass of byproduct/waste sold on a monthly basis.
A checklist for data that must be monitored is available at:
www.epa.gov/climatechange/emissions/downloads/checklists/limemanufacturing.pdf.
What Information Must Be Reported?
In addition to the information required by the General Provisions at 40 CFR 98.3(c), each lime
manufacturing facility must report the following information:
If a CEMS is used to measure CO2 emissions, then under this subpart the relevant information required
under 40 CFR subpart C (General Stationary Fuel Combustion Sources) for the Tier 4 calculation
methodology and the following information must be reported:
• Method used to determine the quantity of lime sold.
• Method used to determine the quantity of lime byproduct/waste sold.
• Beginning and end-of-year inventories for each lime product.
• Beginning and end-of-year inventories for lime byproducts/wastes.
• Annual amount of lime byproduct/waste sold, by type (tons).
• Annual amount of lime product sold, by type (tons).
• Annual amount of lime byproduct/waste not sold, by type (tons).
• Annual amount of lime product not sold, by type (tons).
If a CEMS is not used to measure emissions, then the following information must be reported:
• Annual CO2 process emissions from all kilns combined (metric tons).
• Monthly emission factors for each lime type.
• Monthly emission factors for each sold byproduct/waste by lime type.
• Standard method used (American Society for Testing and Materials or National Lime Association
testing method) to determine chemical compositions of each lime type and lime byproduct/
waste type.
• Monthly results of chemical composition analysis of each lime product and byproduct/waste sold.
• Annual results of chemical composition analysis of each type of lime byproduct/waste not sold.
• Method used to determine the quantity of lime sold.
• Monthly amount of lime product sold, by type (tons).
• Method used to determine the quantity of lime byproduct/waste sold.
• Monthly amount of lime byproduct/waste sold, by type (tons).
• Annual amount of lime byproduct/waste not sold (tons).
• Monthly mass of each lime type produced (tons).
• Beginning and end-of-year inventories for each lime product.
• Beginning and end-of-year inventories for lime byproducts/wastes.
• Annual lime production capacity (tons) per facility.
For More Information
This document is provided solely for informational purposes. It does not provide legal advice, have
legally binding effect, or expressly or implicitly create, expand, or limit any legal rights, obligations,
responsibilities, expectations, or benefits in regard to any person. The series of information sheets is
intended to assist reporting facilities/owners in understanding key provisions of the final rule.
Visit EPA's Web site (www.epa.gov/climatechange/emissions/ghgrulemaking.html) for more
information, including the final preamble and rule, additional information sheets on specific industries,
the schedule for training sessions, and other documents and tools. For questions that cannot be answered
through the Web site, please contact us at: ghgmrr@epa.gov.
40 CFR 98, subpart S 2 EPA-430-F-09-019R
September 2009
------- |