Petrochemical Production
Monitoring Checklist
&EPA
United States
Environmental Protection
Agency
Final Rule: Mandatory Reporting of Greenhouse Gases
What Must Be Monitored for Each Petrochemical Production Process Unit?
If using a CEMS...
In addition to the monitoring requirements under 40 CFR subpart C for the
Tier 3 (for CH4 and N2O emissions) and Tier 4 Calculation Methodologies (for
CO2) and under 40 CFR subpart Y for flares, measure these parameters...
~ Annual quantity of each type of
petrochemical produced from each
process unit (metric tons)
If NOT using a CEMS...
Measure these parameters monthly
(unless otherwise noted)...
~ Volume of each gaseous feedstock
(standard cubic feet [scf])
~ Volume of each liquid product
(gallons or kg)
~ Carbon content of each gaseous
feedstock (kilograms [kg] carbon [C]
per kg of feedstock)
~ Carbon content of each liquid product,
including organic liquid wastes
(kg C per gallon or kg of product)
~ Molecular weight of each gaseous
feedstock (kg/kg-mole)
~ Mass of each solid feedstock (kg)
~ Volume of each gaseous product (scf)
~ Carbon content of each solid feedstock
(kg C per kg of feedstock)
~ Carbon content of each gaseous
product, including streams containing
C02 recovered for sale or use in another
process (kg C per kg of product)
~ Mass of each solid product (kg)
~ Volume of each liquid feedstock
(gallons or kg)
~ Carbon content of each solid product
(kg C per kg of product)
~ Carbon content of each liquid feedstock
(kg C per gallon or kg of feedstock)
~ Annual quantity of each type of
petrochemical produced from each
process unit (metric tons)
Petrochemical Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
40 CFR 98, subpart X
September 2009
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If you comply with the alternative to sampling and carbon content analysis for
feedstocks and products that are greater than 99.5 percent by volume or mass
of a single compound, measure these parameters monthly
(unless otherwise noted)...
~ Calculated carbon content of the off-
specification product
If using the optional combustion methodology for ethylene production
processes:
In addition to the monitoring requirements under 40 CFR subpart C for the
Tier 3 and 4 Calculation Methodologies and under 40 CFR subpart Y for
flares, measure these parameters...
~ Annual quantity of each type of	~ Annual quantity of each feedstock used
petrochemical produced from each	(metric tons)
ethylene process unit (metric tons)
See also the information sheet for Petrochemical Production (EPA-430-F-09-023R) at:
www.epa.gov/climatechange/emissions/downloads/infosheets/petrochemproduction.pdf.
Petrochemical Production Monitoring Checklist	40 CFR 98, subpart X
Mandatory Reporting of Greenhouse Gases	September 2009
~ The amount of time, and start and end
times, that off-specification product was
produced
~ If applicable, the date of any process
change that reduced the composition to
less than 99.5 percent
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