Suppliers of Natural Gas and
Natural Gas Liquids Monitoring Checklist
Final Rule: Mandatory Reporting of Greenhouse Gases
What Must Be Monitored for Each Supplier of Natural Gas and Natural Gas Liquids (NGLs) ?
United States
Environmental Protection
Agency
For local distribution companies (LDCs), measure these parameters...
Annual volume of natural gas received at the
city gate stations for redelivery on its
distribution system
(million standard cubic feet, or Mscf)
Annual volume of natural gas delivered
directly to its systems from producers or
natural gas processing plants from local
production (Mscf)
Annual volume of vaporized liquefied
natural gas produced at on-system
vaporization facilities for delivery on its
distribution system (not included above in
the annual volume of natural gas received at
its city gate for redelivery) (Mscf)
Annual volume of natural gas delivered to
each of the following types of customers:
residential, commercial, industrial, and
electricity generating facilities (Mscf)
Annual volume of natural gas delivered to
downstream gas transmission pipelines and
other LDCs (Mscf)
Daily meter readings of all volumes
monitored (Mscf)
Carbon content or British thermal units (Btu)
content of natural gas supplied (if developing
site-specific higher heating values and
emission factors)
Annual volume of natural gas withdrawn
from on-system storage for delivery on its
distribution system (Mscf)
Annual volume of natural gas delivered to
each meter registering greater than 460,000
Mscf/yr (Mscf)
Annual volume of natural gas received at its
city gate and stored on-system or liquefied
and stored (Mscf)
Suppliers of Natural Gas and Natural Gas Liquids Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
Page Iof2
40 CFR 98, subpart NN
September 2009
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For NGL fractionaters, measure these parameters...
Annual volume of each NGL product
(ethane, propane, normal butane, isobutene,
and pentanes plus) received from other NGL
fractionators (bbl)
Carbon content or Btu content of each NGL
product supplied (ethane, propane, normal
butane, isobutene, and pentanes plus) (if
developing site-specific higher heating
values and emission factors.)
Annual volume of each NGL product
(ethane, propane, normal butane, isobutene,
and pentanes plus) supplied (bbl)
Annual quantity of y-grade, bulk NGLs
received from others for fractionation (bbl)
Annual volume of natural gas received for
processing (Mscf)
Daily meter readings of all volumes
monitored (Mscf)
Annual quantity of propane odorized at the
facility and delivered to others (bbl)
See also the information sheet for Suppliers of Natural Gas and Natural Gas Liquids
(EPA-430-F-09-004R) at:
www.epa.gov/climatechange/emissions/downloads/infosheets/suppliersnaturalgas.pdf.
Suppliers of Natural Gas and Natural Gas Liquids Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
Page 2 of 2
40 CFR 98, subpart NN
September 2009
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