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# NMHC = flare non-methane hydrocarbon emissions (kg/day) CH4 = flare methane emissions (kg/day) FE = flare destruction efficiency (%)

• 3.664

= conversion factor – carbon to carbon dioxide

• 2.743

= conversion factor – methane to carbon dioxide

• 0.001

= conversion factor – kg to metric tonnes

# When sampling to determine the actual value of CFNMHC

is mandated

by the AQMD/APCD, the operator shall use the measured value in lieu of 0.6.

The operator shall use flare destruction efficiencies (FE) specified by the local APCD/AQMD.

The operator shall also report the sum of all flare CH4 emissions reported to the local AQMD/APCD for the report year (metric tonnes/yr).

(B) The operator who is subject to Rule 1118, Control of Emissions from Refinery Flares (South Coast Air Quality Management District), shall calculate ROG as specified in Attachment B of Rule 1118 and report flare CO2 emissions as follows:

365 CO2 = (CFROG

• *

[ROG * FE/(100-FE)] * 3.664) * 0.001

1 Where:

C O 2 = e m i s s i o n s o f C O 2 ( m e t r i c t o n n e s / y r ) ROG = carbon fraction in ROG (CFROG CF = 0.6)

ROG = reactive organic gas flare emissions (kg/day) FE = flare destruction efficiency (%)

• 3.664

= conversion factor – carbon to carbon dioxide

• 0.001

= conversion factor – kg to metric tonnes

The operator shall use flare destruction efficiencies (FE) specified by the local AQMD/APCD.

(C) The operator who is not required to report flare emissions to a local AQMD/APCD shall calculate CO2 emissions as shown below:

## CO2 = RFT * EFNMHC * CFNMHC * 3.664 * 0.001

Where: CO2 = CO2 emissions (metric tonnes/year) RFT = refinery feed through-put (m3/yr) EFNMHC = non-methane hydrocarbon emission factor (EFNMHC 0.002 kg/m3 through-put)

=

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