California Code of Regulations › Title 17 - Public Health › Division 3 - Air Resources › Chapter 1 - Air Resources Board › Subchapter 10 - Climate Change › Article 2 - Mandatory Greenhouse Gas Emissions Reporting › Subarticle 5 - Reporting Requirements and Calculation Methods for Petroleum and Natural Gas Systems › Section 95153 - Calculating GHG Emissions

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The operator of a facility must calculate and report
						  annual GHG emissions as prescribed in this section. The facility operator who
						  is a local distribution company reporting under section
						  95122 of this article must comply
						  with section
						  95153 for reporting emissions from
						  the applicable source types in section
						  95152(i) of this
						  article.
(a)
Metered Natural
						Gas Pneumatic Device and Pneumatic Pump Venting
. The operator of a
						facility who is subject to the requirements of sections
						95153(a) and (b)
						must calculate emissions from a natural gas powered continuous high bleed
						control device and pneumatic pump venting using the method specified in
						paragraph (a)(1) below when the natural gas flow to the device is metered. By
						January 1, 2015, natural gas consumption must be metered for all of the
						operator's pneumatic continuous high bleed devices and pneumatic pumps. The
						operator may choose to also meter flow to any or all low bleed and intermittent
						bleed natural gas powered devices. By January 1, 2019, all continuous bleed
						pneumatic devices must meet the accuracy requirements of section
						95103(k) by
						installation of metering or by measuring, at least annually, the volume of
						natural gas emitted in cubic feet per hour using a temporary meter, or
						calibrated bag, or high volume sampler according to the methods set forth in
						sections 95154(b), (c), and
						(d) respectively. The operator must calculate
						the annual natural gas volumetric emissions at standard conditions using
						calculations in paragraph (r) of this section and calculate both
						CH4 and CO2 volumetric and mass
						emissions from volumetric natural gas emissions using the calculations in
						paragraphs (s) and (t) of this section. For unmetered devices the operator must
						use the method specified in section
						95153(b). Vented
						emissions from natural gas driven pneumatic pumps covered in paragraph (d) of
						this section do not have to be reported under paragraph (a) of this section.
(1) The operator must calculate vented
						emissions for all metered natural gas powered pneumatic devices and pumps using
						the following equation:
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Eq.1)
Where:
Em = Annual natural gas
						  emissions at standard conditions, in cubic feet, for all metered natural gas
						  powered pneumatic devices.
n = Total number of meters.
Bn = Natural gas consumption for
						  meter n.
(2) For both
						metered and unmetered natural gas powered devices, CH4
						and CO2 volumetric and mass emissions must be calculated
						from volumetric natural gas emissions using methods in paragraphs (s) and (t)
						of this section.