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Onshore petroleum and natural gas production and Onshore petroleum and natural gas gathering and boosting | Emission factor (scf/hour/component) |
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1For multi-phase flow that includes gas, use the gas service emissions factors. 2Emission Factor is in units of “scf/hour/device.” 3Emission Factor is in units of “scf/hour/pump.” 4Hydrocarbon liquids greater than or equal to 20°API are considered “light crude.” 5“Others” category includes instruments, loading arms, pressure relief valves, stuffing boxes, compressor seals, dump lever arms, and vents. 6Hydrocarbon liquids less than 20°API are considered “heavy crude.” 7Emission factors are in units of “scf/hour/mile of pipeline.” | |
Eastern U.S. | |
Population Emission Factors—All Components, Gas Service1 | |
Valve | 0.027 |
Connector | 0.003 |
Open-ended Line | 0.061 |
Pressure Relief Valve | 0.040 |
Low Continuous Bleed Pneumatic Device Vents2 | 1.39 |
High Continuous Bleed Pneumatic Device Vents2 | 37.3 |
Intermittent Bleed Pneumatic Device Vents2 | 13.5 |
Pneumatic Pumps3 | 13.3 |
Population Emission Factors—All Components, Light Crude Service4 | |
Valve | 0.05 |
Flange | 0.003 |
Connector | 0.007 |
Open-ended Line | 0.05 |
Pump | 0.01 |
Other5 | 0.30 |
Population Emission Factors—All Components, Heavy Crude Service6 | |
Valve | 0.0005 |
Flange | 0.0009 |
Connector (other) | 0.0003 |
Open-ended Line | 0.006 |
Other5 | 0.003 |
Population Emission Factors—Gathering Pipelines, by Material Type7 | |
Protected Steel | 0.47 |
Unprotected Steel | 16.59 |
Plastic/Composite | 2.50 |
Cast Iron | 27.60 |
Western U.S. | |
Population Emission Factors—All Components, Gas Service1 | |
Valve | 0.121 |
Connector | 0.017 |
Open-ended Line | 0.031 |
Pressure Relief Valve | 0.193 |
Low Continuous Bleed Pneumatic Device Vents2 | 1.39 |
High Continuous Bleed Pneumatic Device Vents2 | 37.3 |
Intermittent Bleed Pneumatic Device Vents2 | 13.5 |
Pneumatic Pumps3 | 13.3 |
Population Emission Factors—All Components, Light Crude Service4 | |
Valve | 0.05 |
Flange | 0.003 |
Connector (other) | 0.007 |
Open-ended Line | 0.05 |
Pump | 0.01 |
Other5 | 0.30 |
Population Emission Factors—All Components, Heavy Crude Service6 | |
Valve | 0.0005 |
Flange | 0.0009 |
Connector (other) | 0.0003 |
Open-ended Line | 0.006 |
Other5 | 0.003 |
Population Emission Factors—Gathering Pipelines by Material Type7 | |
Protected Steel | 0.47 |
Unprotected Steel | 16.59 |
Plastic/Composite | 2.50 |
Cast Iron | 27.60 |
[75 FR 74512, Nov. 30, 2010; 76 FR 80591, Dec. 23, 2011; 77 FR 51495, Aug. 24, 2012; 80 FR 64297, Oct. 22, 2015]