40 C.F.R. § Table W-3A to Subpart W of Part 98
Current through November 30, 2024
| Onshore natural gas transmission compression | Emission factor (scf/hour/component) | |
| If you survey using any of the methods in § 98.234(a)(1) through (6) | If you survey using Method 21 as specified in § 98.234(a)(7) | |
| Leaker Emission Factors-Compressor Components, Gas Service | ||
| Valve1 | 14.84 | 9.51 |
| Connector | 5.59 | 3.58 |
| Open-Ended Line | 17.27 | 11.07 |
| Pressure Relief Valve | 39.66 | 25.42 |
| Meter or Instrument | 19.33 | 12.39 |
| Other2 | 4.1 | 2.63 |
| Leaker Emission Factors-Non-Compressor Components, Gas Service | ||
| Valve1 | 6.42 | 4.12 |
| Connector | 5.71 | 3.66 |
| Open-Ended Line | 11.27 | 7.22 |
| Pressure Relief Valve | 2.01 | 1.29 |
| Meter or Instrument | 2.93 | 1.88 |
| Other2 | 4.1 | 2.63 |
1 Valves include control valves, block valves and regulator valves.
2 Other includes any potential equipment leak emission point in gas service that is not specifically listed in this table, as specified in § 98.232(e)(8) .
40 C.F.R. §Table W-3A to Subpart W of Part 98