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74 FR 56374, Oct. 30, 2009, unless otherwise noted.
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At 90 FR 21227, May 19, 2025, as required by the Congressional Review Act and Public Law 119-2, the Environmental Protection Agency removed the amendments to §§ 98.3 and 98.4 made effective on Jan. 17, 2025, at 89 FR 91163, Nov. 18, 2024. As of May 19, 2025, §§ 98.3 and 98.4 reverted to the Jan. 16, 2025 version.
| Alloy product produced in EAF | CH4 emission factor (kg CH4 per metric ton product) |
||
|---|---|---|---|
| EAF Operation | |||
| Batch-charging | Sprinkle-charging a | Sprinkle-charging and >750 °C b |
|
| Silicon metal | 1.5 | 1.2 | 0.7 |
| Ferrosilicon 90% | 1.4 | 1.1 | 0.6 |
| Ferrosilicon 75% | 1.3 | 1.0 | 0.5 |
| Ferrosilicon 65% | 1.3 | 1.0 | 0.5 |
| a Sprinkle-charging is charging intermittently every minute. | |||
| b Temperature measured in off-gas channel downstream of the furnace hood. | |||