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Ammonia Manufacturing (Subpart G)
Process emissions reported under the ammonia manufacturing subpart may include CO₂ that is later consumed on-site for urea production. This CO₂ is not released to the ambient air from the ammonia manufacturing process unit(s). Facilities that reported consuming some CO₂ in this manner are marked with this icon in the publication tool.

Electronics Manufacturing (Subpart I)
Several facilities reported emissions of gases for which there are no listed global warming potentials (GWPs) under the Greenhouse Gas Reporting Program. The emissions of these gases are not included in the total emissions, expressed in metric tons of carbon dioxide equivalents (MTCO2e), for these facilities. The emissions of these gases are listed separately by gas in metric tons.

Fluorinated Gas Production (Subpart L)
Facilities reported the aggregate emissions from this process in metric tons of carbon dioxide equivalents (MTCO2e). They did not report emissions of individual greenhouse gases.

Hydrogen Production (Subpart P)
Process emissions reported under the hydrogen production subpart may include CO₂ that is not released to the ambient air from the hydrogen manufacturing process unit(s). EPA cannot identify these facilities with an icon because it may disclose that the facility transferred non-CO₂ carbon offsite, which was determined to be confidential business information (CBI).

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Petrochemical Production (Subpart X)
The petrochemical production reporting requirements specify that emissions calculated and reported due to the combustion of ethylene process off-gas calculated using the alternative combustion methodology for ethylene production processes, as specified in §98.243(d), must be reported as process emissions under petrochemical production. In the reporting tool, however, these combustion emissions are instead included in the combustion emissions (Subpart C) emissions for the facility.

Petroleum Refineries (Subpart Y)
Emissions from non-merchant hydrogen plants at refineries (i.e., hydrogen plants that are owned or under the direct control of the refinery owner and operator) are reported under hydrogen production (Subpart P) and displayed as "hydrogen" for reporting year 2010.

A number of refinery GHG emission sources may elect to use the process vent methodology. The emissions from these sources that elect to use the process vent calculation method will be displayed for the specific process unit with the exception of asphalt blowing units, for which the emissions will be displayed as process vents

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Municipal Solid Waste Landfills (Subpart HH)
Municipal Solid Waste Landfills with active landfill gas collection systems must calculate and report GHG emissions in two ways: using Equation HH-6 and Equation HH-8. The tool displays emissions from both equations. These two results should not be added together to arrive at an emissions total. Only one of these numbers (in most cases the larger value) was used as the emissions from the landfill. This value was added to any other emissions sources at the facility, such as stationary combustion, to arrive at the emissions total for the facility. The two emission estimation methods are explained below.

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Facilities that Report under Subpart PP (Suppliers of Carbon Dioxide) and under Subpart AA (Pulp and Paper), Subpart G (Ammonia Production) or Subpart P (Hydrogen Production)
Some facilities reporting under the pulp and paper, ammonia and hydrogen subparts also report under Subpart PP (Suppliers of CO₂). Subpart PP includes facilities that have production process units that collect a CO₂ stream for purposes of transferring CO₂ offsite to supply commercial applications or collect and maintain custody of a CO₂ stream in order to sequester or otherwise inject it underground. In certain cases, CO₂ reported under Subpart PP may be included in the annual emissions total reported under Subpart AA, G or P for those facilities. Facilities are marked with this icon in the publication tool if they reported under (1) Subpart PP and (2) Subpart AA, G or P.

Electrical Equipment Manufacture or Refurbishment (Subpart SS)
Only facilities that with total annual sulfur hexafluoride (SF6) and perfluorocarbon (PFC) purchases greater than 23,000 pounds report under the Greenhouse Gas Reporting Program. Emissions include those at the manufacturing facility as well as any emissions from the equipment installation process at an off-site electric power transmission or distribution location that occur before title to the equipment is transferred to the transmission or distribution entity. Emissions from equipment after title is transferred are reported under Electrical Transmission and Distribution Equipment Use (Subpart DD).

Suppliers

Suppliers are those entities that supply products into the economy which if combusted, released or oxidized emit greenhouse gases into the atmosphere. These fuels and industrial gases are not emitted from the supplier facility but instead distributed throughout the country and used. An example of this is gasoline, which is sold in the U.S. and primarily burned in cars throughout the country. The majority of GHG emissions associated with the transportation, residential and commercial sectors are accounted for by these suppliers.

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