40 CFR Appendix Table W-3A to Subpart W of Part 98 - Table W-3A to Subpart W of Part 98—Default Total Hydrocarbon Leaker Emission Factors for Onshore Natural Gas Transmission Compression
Table W-3A to Subpart W of Part 98—Default Total Hydrocarbon Leaker Emission Factors for Onshore Natural Gas Transmission Compression
Link to an amendment published at 89 FR 42325, May 14, 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) |
|
|
|
||
| Valve 1 | 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 |
| Other 2 | 4.1 | 2.63 |
|
|
||
| Valve 1 | 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 |
| Other 2 | 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).
[81 FR 86516, Nov. 30, 2016]