&EPA
United Slates
Environmental Protection
Agwrevr
Fluorinated Gas Production
Final Rule: Subpart L, Mandatory Reporting of Greenhouse Gases
What Must Be Monitored by Each Producer of Fluorinated Gases?
Conduct the Following Monitoring Activities...
All Fluorinated Gas Production Facilities:
D For processes that have at least one
process vent with annual uncontrolled
fluorinated GHG emissions of one ton or
more, conduct an initial scoping
speciation to identify all fluorinated
GHGs that may be generated
D Measure GHG emissions that occur as a
result of startups, shutdowns, and
malfunctions, either recording
fluorinated GHG emissions during these
events, or documenting that these events
do not result in significant fluorinated
GHG emissions
If using the Mass Balance Approach
D Describe the analytical methods used in the
site GHG Monitoring Plan, including the
description of the method, a description of
the analytical measurement equipment and
procedures, quantitative estimates of the
method's accuracy and precision for the
analytes of interest at the concentrations of
interest, as well as a description of how
these accuracies and precisions were
estimated, including the validation protocol
used
Measure the following masses on a monthly or more frequent basis using flowmeters, weigh scales, or a
combination of volumetric and density measurements with accuracies and precisions that allow the
facility to meet the error criteria:
D Total mass of each fluorine-containing
product produced
D Total mass of each fluorine-containing
reactant fed into the process
D The mass removed from the process in each
stream fed into the destruction device
D The mass removed from the process in each
recaptured stream
Measure the following concentrations at least once each calendar month during which the process is
operating to be representative of the full range of process conditions using equipment and methods with
an accuracy and precision that allow the facility to meet the error criteria:
D The concentration (mass fraction) of
each fluorine-containing reactant,
product, and by-product in each stream
that is fed into the destruction device,
OR the concentration of total fluorine in
each stream that is fed into the
destruction device
D The concentration (mass fraction) of each
fluorine-containing by-product in each
stream that is recaptured OR the
concentration of total fluorine in each
stream that is recaptured
D Characterize emissions from process vents
at frequency specified in rule
Fluorinated Greenhouse Gas Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
November 2010
Page 1 of 4
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If using the Process-Vent-Specific Emission Factor Approach
Conduct an emissions test to develop the process-vent-specific emission factor every 10 years, when a
change to the operating scenario is calculated to result in a 15 percent or greater change in the emission
factor, or when a continuous process vent with less than 10,000 mtCO2e is later found to have emissions
of 10,000 mtCO2e or greater. Measure process activity during the year.
D Conduct the emissions test during
representative performance of the
process or operating scenario(s) of the
process, as applicable. For continuous
processes, sample the process vent for a
minimum of 3 runs of 1 hour each. If
the relative standard deviation among
the emission factors based on each run is
greater than 15%, sample for an
additional 3 runs.
D Both during the test and throughout each
year, measure the process activity (e.g.,
process feed or process production)
using flow meters, weigh scales, or other
measurement devices or instruments
with an accuracy and precision of ±1
percent of full scale or better.
D If process vents from separate processes are
manifolded together, sample emissions
from each process in the ducts before the
emissions are combined or sample in the
common duct when only one process is
operating. Alternatively, sample the
combined emissions and use engineering
calculations or engineering assessments to
allocate the emissions to each process vent,
provided the sum of calculated emissions
across the process vents is within 20% of
the total measured emissions.
D Produce an emissions test report that
contains all information and data used to
derive the process-vent-specific emission
factor, as well as key process conditions
during the test.
If using the Process-Vent-Specific Emission Calculation Factor Approach
Conduct an emissions calculation for each operating scenario for each batch and continuous process vent
every 10 years, or when a change to the operating scenario is expected to change the process-vent-specific
emissions calculation factor. Measure process activity during the year.
D For continuous process vents, determine
the emissions based on the process
activity for representative performance
of the operating scenario; for batch
process vents, determine emissions
based on the process activity for each
typical batch operating scenario.
D Throughout each year, measure the
process activity (e.g., process feed or
process production) using flow meters,
weigh scales, or other measurement
devices or instruments with an accuracy
and precision of ±1 percent of full scale
or better.
D The emission calculation must be
documented by identifying the process, the
operating scenario, and the process vents.
The documentation must contain the
information and data used to calculate the
process-vent-specific emission calculation
factor.
Fluorinated Greenhouse Gas Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
November 20 fO
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If the Facility conducts a site-specific leak detection method or monitoring approach for pieces of
equipment:
D If you determine that EPA Method 21 is
appropriate for monitoring leaks from
your process, conduct screening value
concentration measurements using
Method 21.
D Conduct monitoring on at least 1/3 of
equipment annually, ensuring this 1/3 is
representative of equipment in the
process.
If the Facility Destroys Fluorinated GHGs:
OR
D Develop a site-specific leak monitoring
approach.
D Validate the leak monitoring method and
describe the method and the validation in
the GHG Monitoring Plan.
D Conduct monitoring on at least 1/3 of
equipment annually if emissions are
estimated based on monitoring of
individual pieces of equipment. Ensure this
1/3 is representative of equipment in the
process.
Conduct an emissions test to determine the destruction efficiency. If CF4, SF6, or a saturated PFC other
than CF4 is vented to the destruction device in more than trace concentrations, develop a destruction
efficiency specifically for that compound or for a more difficult-to-destroy surrogate that is specified in the
rule to take credit for the emissions reduction.
D Sample the inlet and outlet of the
destruction device for a minimum of
three runs of 1 hour each to determine
the destruction efficiency.
D Conduct the test when operating at high loads
reasonably expected to occur and when
destroying the most-difficult-to-destroy
fluorinated GHG (or a more difficult to
destroy surrogate) that is fed into the device
or that belongs to the group of fluorinated
GHGs for which you wish to establish a DE.
Track emissions from destruction device malfunctions and measure previously produced fluorinated
GHGs fed into destruction device:
D Account for any temporary reductions
in the destruction efficiency that result
from any malfunctions of the
destruction device.
D Measure the mass of each fluorinated
GHG that is fed into the destruction
device and that was previously
produced using flow meters, weigh
scales, or a combination of volumetric
and density measurements with an
accuracy and precision of ±1 percent
of full scale or better.
D Measure the concentration of the fluorinated
GHG being destroyed (if the measured mass
includes more than trace concentrations of
materials other than the fluorinated GHG
being destroyed).
Fluorinated Greenhouse Gas Production Monitoring Checklist
Mandatory Reporting of Greenhouse Gases
November 2010
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If the Facility vents residual fluorinated GHGs from containers:
D Measure residual fluorinated GHGs in D Develop a heel factor (based on
containers received by the facility using OR representative samples) for each
either scales or pressure and temperature combination of fluorinated GHG, container
measurements with an accuracy and size, and container type, and apply this
precision of ± 1 percent factor to the number of containers vented.
See also the information sheet for Fluorinated Greenhouse Gas Production available at:
htto://epa.gov/climatechange/emissions/ghg infosheets.html.
Fluorinated Greenhouse Gas Production Monitoring Checklist November 2010
Mandatory Reporting of Greenhouse Gases
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