...

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 (insert graphic of icon) in the publication tool., 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)., and Lime Manufacturing (Subpart S)
Process emissions reported under the lime manufacturing subpart may include CO₂ that is later consumed on-site, along with manufactured lime, to produce other materials/products or for other industrial processes (e.g. sugar refining, etc.). This CO₂ is not released to the ambient air from the lime manufacturing process unit(s). Facilities that reported consuming some CO₂ in this manner are marked with this icon (insert graphic of icon) in the publication tool Some facilities reporting under ammonia manufacturing, hydrogen production, and lime manufacturing capture and transfer CO₂ to other users, such as beverage or chemical production. While not emitted on site by these source categories, the captured CO₂ is included in the annual emissions for those subparts. These facilities report the CO₂ that is captured and transferred is also required to be reported under Suppliers of Carbon Dioxide (Subpart PP).

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

...

• Equation HH-6 estimates emissions from a modeled methane generation rate and other factors. This "modeled methane generation rate" is predicted based on the quantity and types of waste historically disposed in the landfill using the first order decay model (see 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 5). Methane generation is then corrected for the measured amount of methane recovered and destroyed. Methane generated in excess of the measured methane recovery is corrected for methane oxidation near the soil surface. If the measured quantity of methane recovered is greater than the modeled methane generation rate, then the quantity of methane recovered is used as the modeled methane generation rate to avoid "negative emissions" as a result of this equation.
• Equation HH-8 estimates emissions based on the measured quantity of methane that was recovered for destruction and an estimated landfill gas collection efficiency. This "back-calculated" quantity of the uncollected gas is then corrected for methane oxidation near the soil surface. Emissions from the quantity of methane recovered for destruction are estimated based on the destruction efficiency.

...

• .

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.

...