This document was  developed  for the  Proposed Mandatory GHG Reporting Rule.
For the  final document,  please  visit  the final Mandatory  Reporting of
Greenhouse Gases  Rule.
Glass Production
-      United Slates
Proposed Rule: Mandatory Reporting of Greenhouse Gases                          Environmental Protection

Under the proposed Mandatory Reporting of Greenhouse Gases (GHGs) rule, owners or
operators of facilities that contain glass 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, miscellaneous use of carbonates, and other source categories (see
information sheet on General Provisions) would report emissions from all source categories
located at the facility for which emission calculation methods are defined in the rule. Owners or
operators would 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?

Under the proposal, the glass production source category consists of facilities that manufacture glass
(including flat, container, pressed, or blown glass) or wool fiberglass using one or more continuous glass
melting furnaces. Experimental  furnaces and research and development process units would be excluded.

What GHGs Would Be  Reported?

The proposal calls for glass production facilities to report the following:
       Carbon dioxide (CO2) process emissions from each continuous glass melting furnace.
       CO2, methane (CFL^, and nitrous oxide (N2O) emissions from each fuel combustion unit at each
       continuous glass melting furnace and each onsite stationary fuel combustion unit by following the
       requirement of 40 CFRpart 98, subpart C (General Stationary Combustion Sources). The
       information sheet on general stationary fuel combustion sources summarizes the proposal for
       calculating and reporting emissions from these units.

In addition, each facility would  report GHG emissions for any other source categories for which
calculation methods are provided in other subparts of the rule.

How Would GHG Emissions Be Calculated?

For CO2 process emissions from glass melting furnaces, the proposal calls for facilities to use one of two
methods, as appropriate:

       For glass melting furnaces with certain types of continuous emission monitoring systems (CEMS)
       in place, facilities would report using the CEMS and following the methodology of 40 CFR part
       98, subpart C. For other glass furnaces, the use of CEMS would be optional.
       Facilities without CEMS would calculate CO2 emissions for each furnace using a default
       emission factor appropriate for the carbonate raw material that is multiplied by:
          o  The annual mass of carbonate-based raw material charged to the furnace (required to be
              measured); and
          o  The mass-fraction of carbonate in the raw material (based on data supplied by the raw
              material supplier and verified by an annual measurement).
March 2009                                    1                              EPA-430-F-09-024

This  document was developed  for the Proposed Mandatory GHG  Reporting Rule.
For  the  final document,  please visit the  final  Mandatory Reporting of
Greenhouse  Gases  Rule.
For CFLt and N2O emissions from glass melting furnaces, owners or operators would follow the
requirements of 40 CFRpart 98, subpart C.

What Information Would Be  Reported?

In addition to the information required by the General Provisions at 40 CFR 98.3(c), the proposal calls for
each glass manufacturing facility to report the following information for each continuous glass melting

       Annual process emissions of CO2.
       Annual quantity of each carbonate-based raw material charged.
       Annual glass production.
       Mass fraction for each carbonate-based raw material charged to a continuous glass melting
       furnace, in percent.

Facilities that use CEMS would also report the data specified in 40 CFR 98.34(d) of subpart C (General
Stationary Fuel Combustion Sources).

For More Information

This series of information sheets is intended to assist reporting facilities/owners in understanding key
provisions of the proposed rule. However, these information sheets are not intended to be a substitution
for the rule. Visit EPA's Web site ( for more
information, including the proposed preamble and rule and additional information sheets on specific
industries, or go to  to access the rulemaking docket (EPA-HQ OAR-2008-0508).
For questions that cannot be answered through the Web site or docket, call 1-877-GHG-l 188.
March 2009                                    2                              EPA-430-F-09-024