Gas Engines and Turbines Count of individual units Yes Annual CH4 Emissions Number of combustion units included Yes Annual CH4 Emissions in aggregated group Number of combustion units sharing a Yes Annual CH4 Emissions common stack or duct Number of combustion units shared Yes Annual CH4 Emissions by a common fuel supply line Flares Count of flare stacks Yes Annual CH4 Emissions Table B.4: Transmission and Storage Facility Level Data Requirements Annual Emissions, Data Emission Source Activity Data tonnes CH4 Quantity of gas transported (as Facility Throughput No reported to EIA Form 176) Vented Sources Pneumatic Devices Count of high bleed pneumatic Yes Annual CH4 Emissions (Transmission) controllers Count of intermittent bleed pneumatic Annual CH4 Emissions Yes controllers Count of low bleed pneumatic Annual CH4 Emissions Yes controllers Pneumatic Devices of high bleed pneumatic Annual CH4 Emissions Yes (Storage) controllers Count of intermittent bleed pneumatic Annual CH4 Emissions Yes controllers Count of low bleed pneumatic Annual CH4 Emissions Yes controllers Annual CH4 Emissions Dehydrator Vents Count of dehydrators No (Applies GHGI emission (Transmission) factor) Annual CH4 Emissions Dehydrator Vents Count of dehydrators No (Applies GHGI emission (Storage) factor) Storage Tanks Count of storage tank vent stacks Yes (Transmission) with flares attached Count of storage tank vent stacks Yes without flares attached Annual CH4 emissions from Count of storage tank vent stacks storage tank vent stacks with Yes with dump valve leakage direct to dump leakage venting gas directly to the atmosphere atmosphere Annual CH4 emissions from Count of storage tank vent stacks Yes storage tank vent stacks with with flared dump valve leakage flared dump valve leakage Count of storage tanks using the No Annual CH4 Emissions alternate calculation method Fugitive Sources
Gas Engines and Turbines Count of individual units Yes Annual CH4 Emissions Number of combustion units included in aggregated group Yes Annual CH4 Emissions Number of combustion units sharing a common stack or duct Yes Annual CH4 Emissions Number of combustion units shared by a common fuel supply line Yes Annual CH4 Emissions Flares Count of flare stacks Yes Annual CH4 Emissions Table B.4: Transmission and Storage Facility Level Data Requirements Emission Source Activity Data Data Annual Emissions, tonnes CH4 Facility Throughput Quantity of gas transported (as reported to EIA Form 176) No Vented Sources Pneumatic Devices (Transmission) Count of high bleed pneumatic controllers Yes Annual CH4 Emissions Count of intermittent bleed pneumatic controllers Yes Annual CH4 Emissions Count of low bleed pneumatic controllers Yes Annual CH4 Emissions Pneumatic Devices (Storage) of high bleed pneumatic controllers Yes Annual CH4 Emissions Count of intermittent bleed pneumatic controllers Yes Annual CH4 Emissions Count of low bleed pneumatic controllers Yes Annual CH4 Emissions Dehydrator Vents (Transmission) Count of dehydrators No Annual CH4 Emissions (Applies GHGI emission factor) Dehydrator Vents (Storage) Count of dehydrators No Annual CH4 Emissions (Applies GHGI emission factor) Storage Tanks (Transmission) Count of storage tank vent stacks with flares attached Yes Count of storage tank vent stacks without flares attached Yes Count of storage tank vent stacks with dump valve leakage direct to atmosphere Yes Annual CH4 emissions from storage tank vent stacks with dump leakage venting gas directly to the atmosphere Count of storage tank vent stacks with flared dump valve leakage Yes Annual CH4 emissions from storage tank vent stacks with flared dump valve leakage Count of storage tanks using the alternate calculation method No Annual CH4 Emissions Fugitive Sources
ONE-Future-Methane-Intensity-Protocol_V2.3_27Aug18.docx