Iron  and  Steel Production
-       United States
Final Rule: Mandatory Reporting of Greenhouse Gases                               ^aimrriental Prot9ction

Under the Mandatory Reporting of Greenhouse Gases (GHGs) rule, owners or operators of facilities that
contain iron and steel production processes (as defined below) and that emit 25, 000 metric tons of GHGs
per year or more (expressed as carbon dioxide equivalents) from stationary combustion, iron and steel
production processes, miscellaneous use of carbonates, and other source categories (see information
sheet on General Provisions) must report emissions from all source categories located at the facility for
which emission calculation 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 iron and steel production source category consists of facilities with any of the following processes:
      Taconite iron ore processing.
      Integrated iron and steel manufacturing (production of steel from iron ore or iron ore pellets).
      Coke making not co-located with an integrated iron and steel manufacturing process.
      Electric arc furnace (EAF) steelmaking not co-located with an integrated iron and steel
       manufacturing process.

What GHGs Must Be Reported?

Facilities must report the following emissions annually:
      Carbon dioxide (CO2) process emissions from each taconite indurating furnace, basic oxygen
       furnace, nonrecovery coke oven battery combustion stack, coke pushing process; sinter process,
       EAF, argon-oxygen decarburization vessel, and direct reduction furnace.
      CO2, methane (CFL^, and nitrous oxide (N2O) emissions from each stationary fuel combustion
       unit. Stationary combustion units include, but are not limited to, byproduct recovery coke oven
       battery combustion stacks, blast furnace stoves, boilers, process heaters, reheat furnaces,
       annealing furnaces, flame suppression, ladle reheaters, and any other miscellaneous combustion
       sources (except flares). Report these emissions under subpart C by following the requirements in
       40 CFRpart 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.
      CO2, CFI4, and N2O emissions from flares according to the requirements in 40 CFR part 98,
       subpart Y (Petroleum Refineries) using the default CO2, CFI4, and N2O emission factors for coke
       oven gas and blast furnace gas.

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?

For CO2 process emissions at each taconite indurating furnace, basic oxygen furnace, nonrecovery coke
oven battery, sinter process, EAF, argon-oxygen decarburization vessel, and direct reduction furnace,
calculate emissions using one of the following methods, as appropriate:
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       Operate and maintain a continuous emission monitoring system (CEMS) to measure the
       combined process and combustion CO2 emissions according to the requirements specified in 40
       CFRpart98, subpartC.
       Use one of the following two calculation methods:
           o  Carbon balance method. Calculate the mass emissions rate of CO2 in each calendar
              month for each process based on the annual mass of inputs and outputs and the respective
              weight fraction of carbon in each process input or output that contains  carbon. Use
              separate procedures and equations for taconite indurating furnaces, basic oxygen process
              furnaces, nonrecovery coke oven batteries, sinter processes, EAFs, argon-oxygen
              decarburization vessels, and direct reduction furnaces. Exclude inputs or outputs that can
              be documented to contribute less than 1 percent of the total mass of carbon into or out of
              the process.
           o  Site-specific emission factor. Determine an emission factor from a performance test that
              measures CO2 emissions from all exhaust stacks for the process, and also measure either
              the feed rate of materials into the process or the production rate  during the test in metric
              tons per hour.
       However, if process CO2 emissions from a taconite indurating furnace, basic oxygen furnace,
       nonrecovery coke oven battery, sinter process, EAF,  argon-oxygen decarburization vessel, or
       direct reduction furnace are emitted through the same stack  as any combustion unit or process
       equipment that reports CO2 emissions using a CEMS that follows the Tier 4 methodology in
       subpart C, then the CEMS must be used to measure and report combined CO2 emissions from that
       stack. In such cases, the reporter cannot use the other process  CO2 calculation approaches
       summarized above.

For coke oven pushing, use the CO2 emission factor provided in the rule and the amount of coal charged
to the coke oven.

A checklist for data that must be monitored is available at:
http://www.epa.gov/climatechange/emissions/downloads/checklists/ironandsteelproduction.pdf.

What Information Must Be Reported?

In addition to the information required by the General Provisions at 40 CFR 98.3(c), report the following
information for each coke pushing operation, taconite indurating furnace, basic oxygen furnace,
nonrecovery coke oven battery, sinter process, EAF, argon-oxygen decarburization vessel, and direct
reduction furnace, as applicable:
       Unit identification  number.
       Annual CO2 emissions (metric tons).
       Annual production quantity (metric tons) for taconite pellets, coke, sinter,  iron, and raw steel.
       If you use the carbon mass balance method to determine CO2 emissions, also report the following
       information for each process:
           o  The carbon content of each process input and output used to determine CO2 emissions.
           o  Whether the carbon content was determined  from information from the supplier or by
              laboratory  analysis, and if by laboratory analysis, the test method used.
           o  The annual volume of gaseous fuel (standard cubic  feet), the annual volume of liquid fuel
              (gallons), and the annual mass (metric tons) of all other process  inputs and outputs used
              to determine CO2 emissions.
           o  The molecular weight of gaseous fuels.
           o  How missing data values, if any, were determined for monthly mass of carbon containing
              inputs and outputs, and the number of months the missing data procedures were used.
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       If you use the site-specific emission factor method to determine CO2 emissions, also report the
       following information for each process:
           o   The measured average hourly CO2 emission rate during the test (metric tons per hour).
           o   The average hourly feed or production rate (as applicable) during the test (metric tons per
               hour).
           o   The site-specific emission factor (metric tons CO2 per metric ton of feed or production, as
               applicable).
           o   The annual feed or production rate used to estimate annual CO2 emissions (metric tons).

If a CEMS is used to measure CO2 emissions, report under this subpart the relevant information required
by 40 CFR subpart C (General Stationary Fuel Combustion Sources) for the Tier 4 calculation
methodology and the following information:
       Unit identification number.
       Annual CO2 emissions (metric tons).
       Annual production quantity (metric tons) for taconite pellets, coke, sinter, iron, and raw steel.
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.
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